./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_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_61-invariant_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 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 --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 14:17:12,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:17:13,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:17:13,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:17:13,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:17:13,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:17:13,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:17:13,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:17:13,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:17:13,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:17:13,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:17:13,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:17:13,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:17:13,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:17:13,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:17:13,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:17:13,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:17:13,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:17:13,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:17:13,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:17:13,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:17:13,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:17:13,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:17:13,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:17:13,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:17:13,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:17:13,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:17:13,088 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:17:13,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:17:13,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:17:13,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:17:13,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:17:13,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:17:13,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:17:13,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:17:13,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:17:13,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:17:13,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:17:13,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:17:13,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:17:13,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:17:13,098 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:17:13,138 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:17:13,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:17:13,139 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:17:13,139 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:17:13,139 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:17:13,140 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:17:13,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:17:13,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:17:13,140 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:17:13,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:17:13,140 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:17:13,141 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:17:13,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:17:13,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:17:13,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:17:13,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:17:13,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:17:13,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:17:13,142 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:17:13,142 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:17:13,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:17:13,142 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:17:13,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:17:13,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:17:13,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:17:13,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:17:13,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:17:13,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:17:13,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:17:13,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:17:13,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:17:13,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:17:13,145 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:17:13,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:17:13,145 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:17:13,145 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:17:13,145 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:17:13,146 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:17:13,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:17:13,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:17:13,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:17:13,466 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:17:13,467 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:17:13,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i [2023-08-30 14:17:14,688 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:17:14,905 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:17:14,908 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i [2023-08-30 14:17:14,932 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/829e98aeb/f0ae9e9feb054eb3ad1daae99cab172d/FLAG0dbc1dfba [2023-08-30 14:17:14,947 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/829e98aeb/f0ae9e9feb054eb3ad1daae99cab172d [2023-08-30 14:17:14,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:17:14,951 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:17:14,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:17:14,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:17:14,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:17:14,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:17:14" (1/1) ... [2023-08-30 14:17:14,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48158d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:14, skipping insertion in model container [2023-08-30 14:17:14,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:17:14" (1/1) ... [2023-08-30 14:17:14,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:17:15,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:17:15,273 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_61-invariant_racing.i[30176,30189] [2023-08-30 14:17:15,296 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:17:15,312 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:17:15,348 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_61-invariant_racing.i[30176,30189] [2023-08-30 14:17:15,370 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:17:15,406 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:17:15,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:15 WrapperNode [2023-08-30 14:17:15,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:17:15,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:17:15,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:17:15,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:17:15,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:15" (1/1) ... [2023-08-30 14:17:15,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:15" (1/1) ... [2023-08-30 14:17:15,472 INFO L138 Inliner]: procedures = 170, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 104 [2023-08-30 14:17:15,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:17:15,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:17:15,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:17:15,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:17:15,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:15" (1/1) ... [2023-08-30 14:17:15,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:15" (1/1) ... [2023-08-30 14:17:15,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:15" (1/1) ... [2023-08-30 14:17:15,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:15" (1/1) ... [2023-08-30 14:17:15,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:15" (1/1) ... [2023-08-30 14:17:15,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:15" (1/1) ... [2023-08-30 14:17:15,526 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:15" (1/1) ... [2023-08-30 14:17:15,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:15" (1/1) ... [2023-08-30 14:17:15,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:17:15,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:17:15,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:17:15,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:17:15,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:15" (1/1) ... [2023-08-30 14:17:15,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:17:15,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:17:15,570 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 14:17:15,601 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 14:17:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:17:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:17:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:17:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:17:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:17:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:17:15,620 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:17:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:17:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:17:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:17:15,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:17:15,621 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 14:17:15,775 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:17:15,776 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:17:16,004 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:17:16,011 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:17:16,011 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-30 14:17:16,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:17:16 BoogieIcfgContainer [2023-08-30 14:17:16,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:17:16,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:17:16,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:17:16,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:17:16,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:17:14" (1/3) ... [2023-08-30 14:17:16,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44fbab8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:17:16, skipping insertion in model container [2023-08-30 14:17:16,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:17:15" (2/3) ... [2023-08-30 14:17:16,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44fbab8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:17:16, skipping insertion in model container [2023-08-30 14:17:16,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:17:16" (3/3) ... [2023-08-30 14:17:16,022 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2023-08-30 14:17:16,029 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:17:16,038 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:17:16,038 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-30 14:17:16,038 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:17:16,130 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:17:16,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 147 transitions, 302 flow [2023-08-30 14:17:16,268 INFO L130 PetriNetUnfolder]: 30/209 cut-off events. [2023-08-30 14:17:16,270 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:17:16,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 209 events. 30/209 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 663 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 110. Up to 6 conditions per place. [2023-08-30 14:17:16,278 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 147 transitions, 302 flow [2023-08-30 14:17:16,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 144 transitions, 296 flow [2023-08-30 14:17:16,290 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:17:16,298 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 144 transitions, 296 flow [2023-08-30 14:17:16,301 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 144 transitions, 296 flow [2023-08-30 14:17:16,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 144 transitions, 296 flow [2023-08-30 14:17:16,330 INFO L130 PetriNetUnfolder]: 29/206 cut-off events. [2023-08-30 14:17:16,331 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:17:16,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 206 events. 29/206 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 660 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 110. Up to 6 conditions per place. [2023-08-30 14:17:16,335 INFO L119 LiptonReduction]: Number of co-enabled transitions 5616 [2023-08-30 14:17:18,870 INFO L134 LiptonReduction]: Checked pairs total: 16901 [2023-08-30 14:17:18,870 INFO L136 LiptonReduction]: Total number of compositions: 112 [2023-08-30 14:17:18,890 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:17:18,897 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;@364501d5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:17:18,897 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-30 14:17:18,906 INFO L130 PetriNetUnfolder]: 0/11 cut-off events. [2023-08-30 14:17:18,906 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:17:18,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:18,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:17:18,908 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:17:18,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:18,913 INFO L85 PathProgramCache]: Analyzing trace with hash 16975788, now seen corresponding path program 1 times [2023-08-30 14:17:18,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:18,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828758160] [2023-08-30 14:17:18,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:18,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:19,212 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 14:17:19,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:19,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828758160] [2023-08-30 14:17:19,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828758160] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:17:19,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:17:19,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:17:19,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272051970] [2023-08-30 14:17:19,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:17:19,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:17:19,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:19,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:17:19,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:17:19,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 259 [2023-08-30 14:17:19,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 66 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:19,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:19,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 259 [2023-08-30 14:17:19,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:19,421 INFO L130 PetriNetUnfolder]: 358/790 cut-off events. [2023-08-30 14:17:19,421 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:17:19,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1550 conditions, 790 events. 358/790 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3955 event pairs, 0 based on Foata normal form. 73/648 useless extension candidates. Maximal degree in co-relation 1498. Up to 718 conditions per place. [2023-08-30 14:17:19,428 INFO L137 encePairwiseOnDemand]: 238/259 looper letters, 59 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-08-30 14:17:19,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 66 transitions, 262 flow [2023-08-30 14:17:19,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:17:19,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:17:19,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 455 transitions. [2023-08-30 14:17:19,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5855855855855856 [2023-08-30 14:17:19,442 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 455 transitions. [2023-08-30 14:17:19,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 455 transitions. [2023-08-30 14:17:19,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:19,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 455 transitions. [2023-08-30 14:17:19,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:19,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:19,469 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:19,471 INFO L175 Difference]: Start difference. First operand has 53 places, 66 transitions, 140 flow. Second operand 3 states and 455 transitions. [2023-08-30 14:17:19,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 66 transitions, 262 flow [2023-08-30 14:17:19,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 66 transitions, 262 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:17:19,477 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 112 flow [2023-08-30 14:17:19,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2023-08-30 14:17:19,482 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2023-08-30 14:17:19,482 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 112 flow [2023-08-30 14:17:19,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:19,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:19,483 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 14:17:19,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:17:19,484 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:17:19,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:19,484 INFO L85 PathProgramCache]: Analyzing trace with hash -866102501, now seen corresponding path program 1 times [2023-08-30 14:17:19,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:19,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952608043] [2023-08-30 14:17:19,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:19,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:17:19,526 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:17:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:17:19,584 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:17:19,584 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:17:19,586 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-30 14:17:19,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-08-30 14:17:19,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-08-30 14:17:19,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-08-30 14:17:19,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-08-30 14:17:19,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-08-30 14:17:19,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-08-30 14:17:19,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-08-30 14:17:19,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-08-30 14:17:19,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-08-30 14:17:19,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-08-30 14:17:19,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-08-30 14:17:19,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-08-30 14:17:19,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-08-30 14:17:19,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-08-30 14:17:19,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-08-30 14:17:19,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-08-30 14:17:19,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:17:19,604 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-30 14:17:19,607 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:17:19,608 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:17:19,626 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:17:19,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 188 transitions, 394 flow [2023-08-30 14:17:19,663 INFO L130 PetriNetUnfolder]: 51/348 cut-off events. [2023-08-30 14:17:19,664 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:17:19,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 348 events. 51/348 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1277 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 211. Up to 9 conditions per place. [2023-08-30 14:17:19,668 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 188 transitions, 394 flow [2023-08-30 14:17:19,671 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 188 transitions, 394 flow [2023-08-30 14:17:19,671 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:17:19,671 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 188 transitions, 394 flow [2023-08-30 14:17:19,672 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 188 transitions, 394 flow [2023-08-30 14:17:19,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 188 transitions, 394 flow [2023-08-30 14:17:19,707 INFO L130 PetriNetUnfolder]: 51/348 cut-off events. [2023-08-30 14:17:19,708 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:17:19,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 348 events. 51/348 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1277 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 211. Up to 9 conditions per place. [2023-08-30 14:17:19,720 INFO L119 LiptonReduction]: Number of co-enabled transitions 15756 [2023-08-30 14:17:22,157 INFO L134 LiptonReduction]: Checked pairs total: 42035 [2023-08-30 14:17:22,157 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-08-30 14:17:22,159 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:17:22,160 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;@364501d5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:17:22,160 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-30 14:17:22,162 INFO L130 PetriNetUnfolder]: 2/17 cut-off events. [2023-08-30 14:17:22,163 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:17:22,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:22,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:17:22,163 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:17:22,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:22,164 INFO L85 PathProgramCache]: Analyzing trace with hash 872129761, now seen corresponding path program 1 times [2023-08-30 14:17:22,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:22,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144855728] [2023-08-30 14:17:22,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:22,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:22,205 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 14:17:22,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:22,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144855728] [2023-08-30 14:17:22,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144855728] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:17:22,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:17:22,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:17:22,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100925054] [2023-08-30 14:17:22,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:17:22,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:17:22,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:22,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:17:22,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:17:22,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 323 [2023-08-30 14:17:22,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 96 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:22,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:22,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 323 [2023-08-30 14:17:22,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:23,585 INFO L130 PetriNetUnfolder]: 11284/17607 cut-off events. [2023-08-30 14:17:23,585 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2023-08-30 14:17:23,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34967 conditions, 17607 events. 11284/17607 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 130348 event pairs, 5088 based on Foata normal form. 2384/14342 useless extension candidates. Maximal degree in co-relation 5126. Up to 17242 conditions per place. [2023-08-30 14:17:23,711 INFO L137 encePairwiseOnDemand]: 297/323 looper letters, 75 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-08-30 14:17:23,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 90 transitions, 352 flow [2023-08-30 14:17:23,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:17:23,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:17:23,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2023-08-30 14:17:23,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5933952528379773 [2023-08-30 14:17:23,715 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2023-08-30 14:17:23,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2023-08-30 14:17:23,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:23,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2023-08-30 14:17:23,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:23,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:23,721 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:23,721 INFO L175 Difference]: Start difference. First operand has 76 places, 96 transitions, 210 flow. Second operand 3 states and 575 transitions. [2023-08-30 14:17:23,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 90 transitions, 352 flow [2023-08-30 14:17:23,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 90 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:17:23,724 INFO L231 Difference]: Finished difference. Result has 79 places, 76 transitions, 184 flow [2023-08-30 14:17:23,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=79, PETRI_TRANSITIONS=76} [2023-08-30 14:17:23,726 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2023-08-30 14:17:23,726 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 76 transitions, 184 flow [2023-08-30 14:17:23,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:23,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:23,727 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:17:23,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:17:23,727 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:17:23,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:23,728 INFO L85 PathProgramCache]: Analyzing trace with hash 898583703, now seen corresponding path program 1 times [2023-08-30 14:17:23,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:23,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048025544] [2023-08-30 14:17:23,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:23,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:23,797 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 14:17:23,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:23,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048025544] [2023-08-30 14:17:23,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048025544] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:17:23,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:17:23,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:17:23,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552800539] [2023-08-30 14:17:23,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:17:23,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:17:23,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:23,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:17:23,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:17:23,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 323 [2023-08-30 14:17:23,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:23,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:23,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 323 [2023-08-30 14:17:23,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:25,101 INFO L130 PetriNetUnfolder]: 10842/17172 cut-off events. [2023-08-30 14:17:25,101 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-08-30 14:17:25,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34560 conditions, 17172 events. 10842/17172 cut-off events. For 309/309 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 131111 event pairs, 1040 based on Foata normal form. 0/12126 useless extension candidates. Maximal degree in co-relation 33402. Up to 14772 conditions per place. [2023-08-30 14:17:25,206 INFO L137 encePairwiseOnDemand]: 319/323 looper letters, 89 selfloop transitions, 4 changer transitions 0/106 dead transitions. [2023-08-30 14:17:25,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 106 transitions, 428 flow [2023-08-30 14:17:25,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:17:25,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:17:25,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 558 transitions. [2023-08-30 14:17:25,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5758513931888545 [2023-08-30 14:17:25,211 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 558 transitions. [2023-08-30 14:17:25,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 558 transitions. [2023-08-30 14:17:25,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:25,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 558 transitions. [2023-08-30 14:17:25,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:25,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:25,216 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:25,216 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 184 flow. Second operand 3 states and 558 transitions. [2023-08-30 14:17:25,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 106 transitions, 428 flow [2023-08-30 14:17:25,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 106 transitions, 426 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:17:25,224 INFO L231 Difference]: Finished difference. Result has 80 places, 76 transitions, 194 flow [2023-08-30 14:17:25,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=77, 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=194, PETRI_PLACES=80, PETRI_TRANSITIONS=76} [2023-08-30 14:17:25,226 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 4 predicate places. [2023-08-30 14:17:25,227 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 76 transitions, 194 flow [2023-08-30 14:17:25,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:25,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:25,228 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:17:25,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:17:25,228 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:17:25,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:25,229 INFO L85 PathProgramCache]: Analyzing trace with hash 898583702, now seen corresponding path program 1 times [2023-08-30 14:17:25,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:25,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421365911] [2023-08-30 14:17:25,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:25,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:25,306 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 14:17:25,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:25,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421365911] [2023-08-30 14:17:25,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421365911] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:17:25,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651914951] [2023-08-30 14:17:25,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:25,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:17:25,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:17:25,313 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 14:17:25,319 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 14:17:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:25,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:17:25,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:17:25,468 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 14:17:25,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:17:25,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651914951] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:17:25,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:17:25,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:17:25,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853937481] [2023-08-30 14:17:25,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:17:25,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:17:25,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:25,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:17:25,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:17:25,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 323 [2023-08-30 14:17:25,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 76 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:25,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:25,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 323 [2023-08-30 14:17:25,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:26,726 INFO L130 PetriNetUnfolder]: 10400/16158 cut-off events. [2023-08-30 14:17:26,726 INFO L131 PetriNetUnfolder]: For 2140/2140 co-relation queries the response was YES. [2023-08-30 14:17:26,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33354 conditions, 16158 events. 10400/16158 cut-off events. For 2140/2140 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 115799 event pairs, 8822 based on Foata normal form. 221/11670 useless extension candidates. Maximal degree in co-relation 19381. Up to 15915 conditions per place. [2023-08-30 14:17:26,796 INFO L137 encePairwiseOnDemand]: 320/323 looper letters, 73 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-08-30 14:17:26,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 88 transitions, 366 flow [2023-08-30 14:17:26,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:17:26,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:17:26,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 700 transitions. [2023-08-30 14:17:26,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541795665634675 [2023-08-30 14:17:26,800 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 700 transitions. [2023-08-30 14:17:26,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 700 transitions. [2023-08-30 14:17:26,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:26,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 700 transitions. [2023-08-30 14:17:26,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:26,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 323.0) internal successors, (1615), 5 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:26,806 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 323.0) internal successors, (1615), 5 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:26,806 INFO L175 Difference]: Start difference. First operand has 80 places, 76 transitions, 194 flow. Second operand 4 states and 700 transitions. [2023-08-30 14:17:26,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 88 transitions, 366 flow [2023-08-30 14:17:26,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 88 transitions, 362 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:17:26,811 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 190 flow [2023-08-30 14:17:26,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=78, 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=190, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2023-08-30 14:17:26,813 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 5 predicate places. [2023-08-30 14:17:26,813 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 190 flow [2023-08-30 14:17:26,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:26,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:26,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:17:26,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 14:17:27,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:17:27,023 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:17:27,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:27,023 INFO L85 PathProgramCache]: Analyzing trace with hash 897515976, now seen corresponding path program 1 times [2023-08-30 14:17:27,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:27,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934520884] [2023-08-30 14:17:27,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:27,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:27,104 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 14:17:27,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:27,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934520884] [2023-08-30 14:17:27,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934520884] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:17:27,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097587430] [2023-08-30 14:17:27,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:27,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:17:27,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:17:27,106 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 14:17:27,130 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 14:17:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:27,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:17:27,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:17:27,205 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 14:17:27,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:17:27,228 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 14:17:27,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097587430] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:17:27,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:17:27,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:17:27,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44097632] [2023-08-30 14:17:27,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:17:27,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:17:27,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:27,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:17:27,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:17:27,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 323 [2023-08-30 14:17:27,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 157.14285714285714) internal successors, (1100), 7 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:27,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:27,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 323 [2023-08-30 14:17:27,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:27,457 INFO L130 PetriNetUnfolder]: 1145/1973 cut-off events. [2023-08-30 14:17:27,457 INFO L131 PetriNetUnfolder]: For 1144/1144 co-relation queries the response was YES. [2023-08-30 14:17:27,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4745 conditions, 1973 events. 1145/1973 cut-off events. For 1144/1144 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 12227 event pairs, 156 based on Foata normal form. 234/1793 useless extension candidates. Maximal degree in co-relation 679. Up to 1326 conditions per place. [2023-08-30 14:17:27,467 INFO L137 encePairwiseOnDemand]: 320/323 looper letters, 78 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2023-08-30 14:17:27,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 91 transitions, 378 flow [2023-08-30 14:17:27,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:17:27,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:17:27,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 858 transitions. [2023-08-30 14:17:27,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5312693498452012 [2023-08-30 14:17:27,471 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 858 transitions. [2023-08-30 14:17:27,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 858 transitions. [2023-08-30 14:17:27,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:27,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 858 transitions. [2023-08-30 14:17:27,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 171.6) internal successors, (858), 5 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:27,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 323.0) internal successors, (1938), 6 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:27,477 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 323.0) internal successors, (1938), 6 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:27,477 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 190 flow. Second operand 5 states and 858 transitions. [2023-08-30 14:17:27,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 91 transitions, 378 flow [2023-08-30 14:17:27,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 91 transitions, 373 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 14:17:27,480 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 127 flow [2023-08-30 14:17:27,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2023-08-30 14:17:27,483 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -19 predicate places. [2023-08-30 14:17:27,483 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 127 flow [2023-08-30 14:17:27,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 157.14285714285714) internal successors, (1100), 7 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:27,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:27,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:17:27,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 14:17:27,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 14:17:27,690 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:17:27,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:27,691 INFO L85 PathProgramCache]: Analyzing trace with hash -299493948, now seen corresponding path program 1 times [2023-08-30 14:17:27,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:27,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686707114] [2023-08-30 14:17:27,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:27,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:27,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:27,719 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 14:17:27,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:27,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686707114] [2023-08-30 14:17:27,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686707114] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:17:27,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:17:27,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:17:27,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382919858] [2023-08-30 14:17:27,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:17:27,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:17:27,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:27,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:17:27,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:17:27,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 323 [2023-08-30 14:17:27,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:27,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:27,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 323 [2023-08-30 14:17:27,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:27,763 INFO L130 PetriNetUnfolder]: 66/137 cut-off events. [2023-08-30 14:17:27,763 INFO L131 PetriNetUnfolder]: For 141/141 co-relation queries the response was YES. [2023-08-30 14:17:27,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 137 events. 66/137 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 428 event pairs, 66 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 328. Up to 128 conditions per place. [2023-08-30 14:17:27,764 INFO L137 encePairwiseOnDemand]: 320/323 looper letters, 12 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2023-08-30 14:17:27,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 15 transitions, 89 flow [2023-08-30 14:17:27,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:17:27,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:17:27,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 460 transitions. [2023-08-30 14:17:27,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47471620227038186 [2023-08-30 14:17:27,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 460 transitions. [2023-08-30 14:17:27,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 460 transitions. [2023-08-30 14:17:27,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:27,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 460 transitions. [2023-08-30 14:17:27,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:27,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:27,771 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:27,771 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 127 flow. Second operand 3 states and 460 transitions. [2023-08-30 14:17:27,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 15 transitions, 89 flow [2023-08-30 14:17:27,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 15 transitions, 82 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 14:17:27,772 INFO L231 Difference]: Finished difference. Result has 26 places, 15 transitions, 58 flow [2023-08-30 14:17:27,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=26, PETRI_TRANSITIONS=15} [2023-08-30 14:17:27,774 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -50 predicate places. [2023-08-30 14:17:27,774 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 15 transitions, 58 flow [2023-08-30 14:17:27,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:27,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:27,775 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 14:17:27,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:17:27,775 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:17:27,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:27,776 INFO L85 PathProgramCache]: Analyzing trace with hash 250551956, now seen corresponding path program 1 times [2023-08-30 14:17:27,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:27,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623597206] [2023-08-30 14:17:27,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:27,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:27,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:17:27,798 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:17:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:17:27,816 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:17:27,816 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:17:27,816 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-08-30 14:17:27,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-30 14:17:27,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-30 14:17:27,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-30 14:17:27,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-30 14:17:27,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-30 14:17:27,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-30 14:17:27,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-30 14:17:27,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-30 14:17:27,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-30 14:17:27,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-30 14:17:27,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-30 14:17:27,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-08-30 14:17:27,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-30 14:17:27,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-30 14:17:27,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-30 14:17:27,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-30 14:17:27,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-30 14:17:27,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-30 14:17:27,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-30 14:17:27,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-30 14:17:27,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:17:27,820 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-30 14:17:27,821 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:17:27,821 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:17:27,852 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:17:27,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 229 transitions, 488 flow [2023-08-30 14:17:27,911 INFO L130 PetriNetUnfolder]: 77/526 cut-off events. [2023-08-30 14:17:27,912 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:17:27,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 526 events. 77/526 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2100 event pairs, 1 based on Foata normal form. 0/397 useless extension candidates. Maximal degree in co-relation 356. Up to 16 conditions per place. [2023-08-30 14:17:27,918 INFO L82 GeneralOperation]: Start removeDead. Operand has 201 places, 229 transitions, 488 flow [2023-08-30 14:17:27,922 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 229 transitions, 488 flow [2023-08-30 14:17:27,922 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:17:27,922 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 201 places, 229 transitions, 488 flow [2023-08-30 14:17:27,922 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 201 places, 229 transitions, 488 flow [2023-08-30 14:17:27,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 229 transitions, 488 flow [2023-08-30 14:17:28,007 INFO L130 PetriNetUnfolder]: 77/526 cut-off events. [2023-08-30 14:17:28,008 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:17:28,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 526 events. 77/526 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2100 event pairs, 1 based on Foata normal form. 0/397 useless extension candidates. Maximal degree in co-relation 356. Up to 16 conditions per place. [2023-08-30 14:17:28,029 INFO L119 LiptonReduction]: Number of co-enabled transitions 28548 [2023-08-30 14:17:30,793 INFO L134 LiptonReduction]: Checked pairs total: 95238 [2023-08-30 14:17:30,793 INFO L136 LiptonReduction]: Total number of compositions: 166 [2023-08-30 14:17:30,795 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:17:30,795 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;@364501d5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:17:30,795 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-30 14:17:30,798 INFO L130 PetriNetUnfolder]: 2/17 cut-off events. [2023-08-30 14:17:30,798 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:17:30,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:30,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:17:30,799 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:17:30,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:30,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1287867197, now seen corresponding path program 1 times [2023-08-30 14:17:30,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:30,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448714536] [2023-08-30 14:17:30,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:30,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:30,820 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 14:17:30,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:30,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448714536] [2023-08-30 14:17:30,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448714536] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:17:30,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:17:30,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:17:30,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236462239] [2023-08-30 14:17:30,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:17:30,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:17:30,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:30,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:17:30,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:17:30,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 395 [2023-08-30 14:17:30,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 123 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:30,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:30,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 395 [2023-08-30 14:17:30,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:50,526 INFO L130 PetriNetUnfolder]: 269556/371677 cut-off events. [2023-08-30 14:17:50,526 INFO L131 PetriNetUnfolder]: For 2450/2450 co-relation queries the response was YES. [2023-08-30 14:17:51,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737435 conditions, 371677 events. 269556/371677 cut-off events. For 2450/2450 co-relation queries the response was YES. Maximal size of possible extension queue 11182. Compared 3021073 event pairs, 165963 based on Foata normal form. 52268/303359 useless extension candidates. Maximal degree in co-relation 64865. Up to 363783 conditions per place. [2023-08-30 14:17:52,536 INFO L137 encePairwiseOnDemand]: 363/395 looper letters, 92 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2023-08-30 14:17:52,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 111 transitions, 440 flow [2023-08-30 14:17:52,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:17:52,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:17:52,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 697 transitions. [2023-08-30 14:17:52,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5881856540084388 [2023-08-30 14:17:52,539 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 697 transitions. [2023-08-30 14:17:52,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 697 transitions. [2023-08-30 14:17:52,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:52,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 697 transitions. [2023-08-30 14:17:52,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:52,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:52,544 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:52,544 INFO L175 Difference]: Start difference. First operand has 97 places, 123 transitions, 276 flow. Second operand 3 states and 697 transitions. [2023-08-30 14:17:52,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 111 transitions, 440 flow [2023-08-30 14:17:52,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 111 transitions, 440 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:17:52,550 INFO L231 Difference]: Finished difference. Result has 100 places, 97 transitions, 238 flow [2023-08-30 14:17:52,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=100, PETRI_TRANSITIONS=97} [2023-08-30 14:17:52,551 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 3 predicate places. [2023-08-30 14:17:52,551 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 97 transitions, 238 flow [2023-08-30 14:17:52,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:52,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:52,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:17:52,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 14:17:52,552 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:17:52,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:52,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1029107409, now seen corresponding path program 1 times [2023-08-30 14:17:52,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:52,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749982656] [2023-08-30 14:17:52,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:52,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:52,573 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 14:17:52,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:52,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749982656] [2023-08-30 14:17:52,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749982656] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:17:52,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:17:52,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:17:52,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104153207] [2023-08-30 14:17:52,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:17:52,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:17:52,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:52,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:17:52,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:17:52,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 395 [2023-08-30 14:17:52,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 97 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:52,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:52,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 395 [2023-08-30 14:17:52,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:18:10,084 INFO L130 PetriNetUnfolder]: 236881/340987 cut-off events. [2023-08-30 14:18:10,085 INFO L131 PetriNetUnfolder]: For 3277/3277 co-relation queries the response was YES. [2023-08-30 14:18:10,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 675874 conditions, 340987 events. 236881/340987 cut-off events. For 3277/3277 co-relation queries the response was YES. Maximal size of possible extension queue 9853. Compared 2901176 event pairs, 152866 based on Foata normal form. 0/252864 useless extension candidates. Maximal degree in co-relation 675835. Up to 260384 conditions per place. [2023-08-30 14:18:11,850 INFO L137 encePairwiseOnDemand]: 363/395 looper letters, 118 selfloop transitions, 12 changer transitions 0/145 dead transitions. [2023-08-30 14:18:11,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 145 transitions, 603 flow [2023-08-30 14:18:11,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:18:11,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:18:11,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2023-08-30 14:18:11,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5763713080168776 [2023-08-30 14:18:11,852 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2023-08-30 14:18:11,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2023-08-30 14:18:11,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:18:11,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2023-08-30 14:18:11,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:11,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:11,856 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:11,856 INFO L175 Difference]: Start difference. First operand has 100 places, 97 transitions, 238 flow. Second operand 3 states and 683 transitions. [2023-08-30 14:18:11,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 145 transitions, 603 flow [2023-08-30 14:18:11,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 145 transitions, 601 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:18:11,867 INFO L231 Difference]: Finished difference. Result has 101 places, 105 transitions, 356 flow [2023-08-30 14:18:11,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=356, PETRI_PLACES=101, PETRI_TRANSITIONS=105} [2023-08-30 14:18:11,868 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 4 predicate places. [2023-08-30 14:18:11,868 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 105 transitions, 356 flow [2023-08-30 14:18:11,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:11,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:18:11,868 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:18:11,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:18:11,869 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:18:11,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:18:11,869 INFO L85 PathProgramCache]: Analyzing trace with hash 422674502, now seen corresponding path program 1 times [2023-08-30 14:18:11,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:18:11,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511823417] [2023-08-30 14:18:11,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:18:11,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:18:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:18:11,912 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 14:18:11,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:18:11,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511823417] [2023-08-30 14:18:11,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511823417] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:18:11,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222260094] [2023-08-30 14:18:11,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:18:11,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:18:11,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:18:11,914 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 14:18:11,918 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 14:18:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:18:11,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:18:11,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:18:12,001 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 14:18:12,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:18:12,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222260094] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:18:12,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:18:12,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:18:12,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887908989] [2023-08-30 14:18:12,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:18:12,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:18:12,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:18:12,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:18:12,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:18:12,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 395 [2023-08-30 14:18:12,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 105 transitions, 356 flow. Second operand has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:12,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:18:12,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 395 [2023-08-30 14:18:12,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:18:30,825 INFO L130 PetriNetUnfolder]: 228782/332248 cut-off events. [2023-08-30 14:18:30,825 INFO L131 PetriNetUnfolder]: For 73406/74445 co-relation queries the response was YES. [2023-08-30 14:18:31,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 796337 conditions, 332248 events. 228782/332248 cut-off events. For 73406/74445 co-relation queries the response was YES. Maximal size of possible extension queue 9750. Compared 2860057 event pairs, 188996 based on Foata normal form. 0/287715 useless extension candidates. Maximal degree in co-relation 561081. Up to 317811 conditions per place. [2023-08-30 14:18:32,640 INFO L137 encePairwiseOnDemand]: 392/395 looper letters, 87 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2023-08-30 14:18:32,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 107 transitions, 536 flow [2023-08-30 14:18:32,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:18:32,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:18:32,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 837 transitions. [2023-08-30 14:18:32,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529746835443038 [2023-08-30 14:18:32,643 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 837 transitions. [2023-08-30 14:18:32,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 837 transitions. [2023-08-30 14:18:32,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:18:32,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 837 transitions. [2023-08-30 14:18:32,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 209.25) internal successors, (837), 4 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:32,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:32,648 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:32,648 INFO L175 Difference]: Start difference. First operand has 101 places, 105 transitions, 356 flow. Second operand 4 states and 837 transitions. [2023-08-30 14:18:32,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 107 transitions, 536 flow [2023-08-30 14:18:55,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 107 transitions, 512 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:18:55,139 INFO L231 Difference]: Finished difference. Result has 101 places, 104 transitions, 332 flow [2023-08-30 14:18:55,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=332, PETRI_PLACES=101, PETRI_TRANSITIONS=104} [2023-08-30 14:18:55,139 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 4 predicate places. [2023-08-30 14:18:55,140 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 104 transitions, 332 flow [2023-08-30 14:18:55,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:55,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:18:55,140 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:18:55,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 14:18:55,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:18:55,341 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:18:55,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:18:55,342 INFO L85 PathProgramCache]: Analyzing trace with hash 422674503, now seen corresponding path program 1 times [2023-08-30 14:18:55,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:18:55,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17859031] [2023-08-30 14:18:55,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:18:55,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:18:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:18:55,380 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 14:18:55,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:18:55,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17859031] [2023-08-30 14:18:55,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17859031] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:18:55,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:18:55,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:18:55,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883095276] [2023-08-30 14:18:55,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:18:55,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:18:55,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:18:55,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:18:55,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:18:55,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 395 [2023-08-30 14:18:55,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 104 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:55,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:18:55,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 395 [2023-08-30 14:18:55,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand