./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 10:50:17,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:50:17,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:50:18,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:50:18,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:50:18,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:50:18,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:50:18,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:50:18,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:50:18,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:50:18,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:50:18,059 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:50:18,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:50:18,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:50:18,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:50:18,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:50:18,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:50:18,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:50:18,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:50:18,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:50:18,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:50:18,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:50:18,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:50:18,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:50:18,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:50:18,091 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:50:18,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:50:18,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:50:18,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:50:18,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:50:18,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:50:18,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:50:18,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:50:18,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:50:18,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:50:18,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:50:18,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:50:18,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:50:18,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:50:18,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:50:18,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:50:18,105 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:50:18,141 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:50:18,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:50:18,142 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:50:18,143 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:50:18,144 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:50:18,144 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:50:18,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:50:18,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:50:18,145 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:50:18,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:50:18,146 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:50:18,146 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:50:18,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:50:18,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:50:18,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:50:18,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:50:18,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:50:18,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:50:18,147 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:50:18,147 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:50:18,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:50:18,148 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:50:18,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:50:18,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:50:18,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:50:18,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:50:18,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:50:18,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:50:18,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:50:18,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:50:18,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:50:18,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:50:18,150 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:50:18,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:50:18,150 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:50:18,150 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:50:18,151 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:50:18,151 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:50:18,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:50:18,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:50:18,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:50:18,542 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:50:18,543 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:50:18,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c [2023-08-30 10:50:19,871 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:50:20,129 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:50:20,129 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c [2023-08-30 10:50:20,137 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34f334522/33b2481f61e14e85ab56c476efa55bc6/FLAGe1588ef52 [2023-08-30 10:50:20,151 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34f334522/33b2481f61e14e85ab56c476efa55bc6 [2023-08-30 10:50:20,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:50:20,154 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:50:20,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:50:20,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:50:20,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:50:20,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:50:20" (1/1) ... [2023-08-30 10:50:20,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ab886d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:20, skipping insertion in model container [2023-08-30 10:50:20,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:50:20" (1/1) ... [2023-08-30 10:50:20,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:50:20,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:50:20,357 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c[2728,2741] [2023-08-30 10:50:20,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:50:20,386 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:50:20,423 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c[2728,2741] [2023-08-30 10:50:20,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:50:20,455 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:50:20,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:20 WrapperNode [2023-08-30 10:50:20,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:50:20,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:50:20,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:50:20,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:50:20,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:20" (1/1) ... [2023-08-30 10:50:20,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:20" (1/1) ... [2023-08-30 10:50:20,530 INFO L138 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 13, calls inlined = 21, statements flattened = 343 [2023-08-30 10:50:20,532 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:50:20,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:50:20,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:50:20,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:50:20,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:20" (1/1) ... [2023-08-30 10:50:20,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:20" (1/1) ... [2023-08-30 10:50:20,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:20" (1/1) ... [2023-08-30 10:50:20,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:20" (1/1) ... [2023-08-30 10:50:20,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:20" (1/1) ... [2023-08-30 10:50:20,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:20" (1/1) ... [2023-08-30 10:50:20,594 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:20" (1/1) ... [2023-08-30 10:50:20,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:20" (1/1) ... [2023-08-30 10:50:20,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:50:20,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:50:20,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:50:20,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:50:20,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:20" (1/1) ... [2023-08-30 10:50:20,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:50:20,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:50:20,643 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 10:50:20,667 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 10:50:20,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:50:20,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:50:20,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:50:20,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:50:20,684 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 10:50:20,684 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 10:50:20,684 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 10:50:20,684 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 10:50:20,684 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 10:50:20,684 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 10:50:20,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:50:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 10:50:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:50:20,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:50:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:50:20,686 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 10:50:20,790 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:50:20,792 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:50:21,388 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:50:21,401 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:50:21,402 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 10:50:21,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:50:21 BoogieIcfgContainer [2023-08-30 10:50:21,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:50:21,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:50:21,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:50:21,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:50:21,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:50:20" (1/3) ... [2023-08-30 10:50:21,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65756f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:50:21, skipping insertion in model container [2023-08-30 10:50:21,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:20" (2/3) ... [2023-08-30 10:50:21,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65756f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:50:21, skipping insertion in model container [2023-08-30 10:50:21,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:50:21" (3/3) ... [2023-08-30 10:50:21,412 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2023-08-30 10:50:21,420 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:50:21,437 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:50:21,438 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-08-30 10:50:21,438 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:50:21,602 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 10:50:21,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 394 places, 418 transitions, 860 flow [2023-08-30 10:50:21,790 INFO L130 PetriNetUnfolder]: 34/415 cut-off events. [2023-08-30 10:50:21,790 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 10:50:21,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 415 events. 34/415 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1009 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 317. Up to 3 conditions per place. [2023-08-30 10:50:21,805 INFO L82 GeneralOperation]: Start removeDead. Operand has 394 places, 418 transitions, 860 flow [2023-08-30 10:50:21,815 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 397 transitions, 809 flow [2023-08-30 10:50:21,818 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:50:21,831 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 374 places, 397 transitions, 809 flow [2023-08-30 10:50:21,834 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 374 places, 397 transitions, 809 flow [2023-08-30 10:50:21,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 397 transitions, 809 flow [2023-08-30 10:50:21,918 INFO L130 PetriNetUnfolder]: 33/397 cut-off events. [2023-08-30 10:50:21,919 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 10:50:21,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 397 events. 33/397 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 955 event pairs, 0 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 317. Up to 3 conditions per place. [2023-08-30 10:50:21,939 INFO L119 LiptonReduction]: Number of co-enabled transitions 38184 [2023-08-30 10:50:38,164 INFO L134 LiptonReduction]: Checked pairs total: 51437 [2023-08-30 10:50:38,165 INFO L136 LiptonReduction]: Total number of compositions: 504 [2023-08-30 10:50:38,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:50:38,182 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;@56a29328, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:50:38,183 INFO L358 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2023-08-30 10:50:38,185 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 10:50:38,185 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:50:38,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:50:38,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 10:50:38,187 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 10:50:38,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:50:38,191 INFO L85 PathProgramCache]: Analyzing trace with hash 55444, now seen corresponding path program 1 times [2023-08-30 10:50:38,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:50:38,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193509783] [2023-08-30 10:50:38,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:50:38,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:50:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:50:38,446 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 10:50:38,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:50:38,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193509783] [2023-08-30 10:50:38,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193509783] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:50:38,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:50:38,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:50:38,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725960469] [2023-08-30 10:50:38,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:50:38,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:50:38,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:50:38,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:50:38,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:50:38,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 922 [2023-08-30 10:50:38,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 383.6666666666667) internal successors, (1151), 3 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:38,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:50:38,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 922 [2023-08-30 10:50:38,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:50:42,262 INFO L130 PetriNetUnfolder]: 25859/35997 cut-off events. [2023-08-30 10:50:42,262 INFO L131 PetriNetUnfolder]: For 1328/1328 co-relation queries the response was YES. [2023-08-30 10:50:42,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73173 conditions, 35997 events. 25859/35997 cut-off events. For 1328/1328 co-relation queries the response was YES. Maximal size of possible extension queue 1572. Compared 214824 event pairs, 22226 based on Foata normal form. 0/14469 useless extension candidates. Maximal degree in co-relation 34416. Up to 18003 conditions per place. [2023-08-30 10:50:42,498 INFO L137 encePairwiseOnDemand]: 904/922 looper letters, 115 selfloop transitions, 6 changer transitions 0/121 dead transitions. [2023-08-30 10:50:42,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 121 transitions, 514 flow [2023-08-30 10:50:42,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:50:42,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:50:42,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1288 transitions. [2023-08-30 10:50:42,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656543745480839 [2023-08-30 10:50:42,522 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1288 transitions. [2023-08-30 10:50:42,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1288 transitions. [2023-08-30 10:50:42,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:50:42,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1288 transitions. [2023-08-30 10:50:42,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 429.3333333333333) internal successors, (1288), 3 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:42,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 922.0) internal successors, (3688), 4 states have internal predecessors, (3688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:42,546 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 922.0) internal successors, (3688), 4 states have internal predecessors, (3688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:42,548 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 155 flow. Second operand 3 states and 1288 transitions. [2023-08-30 10:50:42,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 121 transitions, 514 flow [2023-08-30 10:50:42,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 121 transitions, 496 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 10:50:42,562 INFO L231 Difference]: Finished difference. Result has 65 places, 69 transitions, 190 flow [2023-08-30 10:50:42,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=922, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=65, PETRI_TRANSITIONS=69} [2023-08-30 10:50:42,568 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -7 predicate places. [2023-08-30 10:50:42,568 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 69 transitions, 190 flow [2023-08-30 10:50:42,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 383.6666666666667) internal successors, (1151), 3 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:42,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:50:42,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 10:50:42,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:50:42,570 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 10:50:42,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:50:42,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1721417, now seen corresponding path program 1 times [2023-08-30 10:50:42,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:50:42,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320673637] [2023-08-30 10:50:42,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:50:42,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:50:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:50:42,674 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 10:50:42,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:50:42,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320673637] [2023-08-30 10:50:42,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320673637] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:50:42,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037229142] [2023-08-30 10:50:42,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:50:42,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:50:42,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:50:42,685 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 10:50:42,696 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 10:50:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:50:42,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:50:42,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:50:42,826 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 10:50:42,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:50:42,841 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 10:50:42,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037229142] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:50:42,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:50:42,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 10:50:42,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254607291] [2023-08-30 10:50:42,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:50:42,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:50:42,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:50:42,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:50:42,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:50:42,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 922 [2023-08-30 10:50:42,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 69 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 384.14285714285717) internal successors, (2689), 7 states have internal predecessors, (2689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:42,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:50:42,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 922 [2023-08-30 10:50:42,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:50:49,533 INFO L130 PetriNetUnfolder]: 64655/89991 cut-off events. [2023-08-30 10:50:49,533 INFO L131 PetriNetUnfolder]: For 740/740 co-relation queries the response was YES. [2023-08-30 10:50:49,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182074 conditions, 89991 events. 64655/89991 cut-off events. For 740/740 co-relation queries the response was YES. Maximal size of possible extension queue 3343. Compared 595520 event pairs, 55565 based on Foata normal form. 0/36186 useless extension candidates. Maximal degree in co-relation 145575. Up to 18001 conditions per place. [2023-08-30 10:50:49,953 INFO L137 encePairwiseOnDemand]: 910/922 looper letters, 268 selfloop transitions, 33 changer transitions 0/301 dead transitions. [2023-08-30 10:50:49,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 301 transitions, 1340 flow [2023-08-30 10:50:49,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:50:49,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:50:49,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2991 transitions. [2023-08-30 10:50:49,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634335295940502 [2023-08-30 10:50:49,967 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2991 transitions. [2023-08-30 10:50:49,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2991 transitions. [2023-08-30 10:50:49,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:50:49,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2991 transitions. [2023-08-30 10:50:49,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 427.2857142857143) internal successors, (2991), 7 states have internal predecessors, (2991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:49,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 922.0) internal successors, (7376), 8 states have internal predecessors, (7376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:49,999 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 922.0) internal successors, (7376), 8 states have internal predecessors, (7376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:49,999 INFO L175 Difference]: Start difference. First operand has 65 places, 69 transitions, 190 flow. Second operand 7 states and 2991 transitions. [2023-08-30 10:50:49,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 301 transitions, 1340 flow [2023-08-30 10:50:50,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 301 transitions, 1316 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:50:50,009 INFO L231 Difference]: Finished difference. Result has 72 places, 93 transitions, 397 flow [2023-08-30 10:50:50,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=922, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=397, PETRI_PLACES=72, PETRI_TRANSITIONS=93} [2023-08-30 10:50:50,010 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2023-08-30 10:50:50,010 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 93 transitions, 397 flow [2023-08-30 10:50:50,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 384.14285714285717) internal successors, (2689), 7 states have internal predecessors, (2689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:50,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:50:50,012 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 10:50:50,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 10:50:50,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:50:50,224 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 10:50:50,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:50:50,224 INFO L85 PathProgramCache]: Analyzing trace with hash 53365524, now seen corresponding path program 1 times [2023-08-30 10:50:50,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:50:50,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818289647] [2023-08-30 10:50:50,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:50:50,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:50:50,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:50:50,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:50:50,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:50:50,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818289647] [2023-08-30 10:50:50,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818289647] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:50:50,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934544795] [2023-08-30 10:50:50,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:50:50,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:50:50,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:50:50,384 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 10:50:50,387 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 10:50:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:50:50,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 10:50:50,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:50:50,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:50:50,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:50:50,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934544795] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:50:50,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:50:50,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 10:50:50,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065573155] [2023-08-30 10:50:50,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:50:50,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:50:50,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:50:50,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:50:50,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:50:50,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 922 [2023-08-30 10:50:50,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 93 transitions, 397 flow. Second operand has 5 states, 5 states have (on average 383.8) internal successors, (1919), 5 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:50,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:50:50,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 922 [2023-08-30 10:50:50,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:50:56,980 INFO L130 PetriNetUnfolder]: 64646/89979 cut-off events. [2023-08-30 10:50:56,980 INFO L131 PetriNetUnfolder]: For 745/745 co-relation queries the response was YES. [2023-08-30 10:50:57,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182077 conditions, 89979 events. 64646/89979 cut-off events. For 745/745 co-relation queries the response was YES. Maximal size of possible extension queue 3225. Compared 593292 event pairs, 55565 based on Foata normal form. 2/36187 useless extension candidates. Maximal degree in co-relation 109218. Up to 53985 conditions per place. [2023-08-30 10:50:57,374 INFO L137 encePairwiseOnDemand]: 913/922 looper letters, 170 selfloop transitions, 15 changer transitions 0/185 dead transitions. [2023-08-30 10:50:57,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 185 transitions, 906 flow [2023-08-30 10:50:57,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:50:57,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:50:57,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2096 transitions. [2023-08-30 10:50:57,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4546637744034707 [2023-08-30 10:50:57,380 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2096 transitions. [2023-08-30 10:50:57,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2096 transitions. [2023-08-30 10:50:57,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:50:57,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2096 transitions. [2023-08-30 10:50:57,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 419.2) internal successors, (2096), 5 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:57,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 922.0) internal successors, (5532), 6 states have internal predecessors, (5532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:57,397 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 922.0) internal successors, (5532), 6 states have internal predecessors, (5532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:57,398 INFO L175 Difference]: Start difference. First operand has 72 places, 93 transitions, 397 flow. Second operand 5 states and 2096 transitions. [2023-08-30 10:50:57,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 185 transitions, 906 flow [2023-08-30 10:50:57,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 185 transitions, 876 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 10:50:57,403 INFO L231 Difference]: Finished difference. Result has 71 places, 81 transitions, 316 flow [2023-08-30 10:50:57,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=922, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=316, PETRI_PLACES=71, PETRI_TRANSITIONS=81} [2023-08-30 10:50:57,404 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -1 predicate places. [2023-08-30 10:50:57,404 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 81 transitions, 316 flow [2023-08-30 10:50:57,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 383.8) internal successors, (1919), 5 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:57,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:50:57,406 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 10:50:57,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 10:50:57,611 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,SelfDestructingSolverStorable2 [2023-08-30 10:50:57,612 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 10:50:57,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:50:57,612 INFO L85 PathProgramCache]: Analyzing trace with hash -255255115, now seen corresponding path program 2 times [2023-08-30 10:50:57,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:50:57,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201155523] [2023-08-30 10:50:57,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:50:57,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:50:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:50:57,749 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:50:57,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:50:57,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201155523] [2023-08-30 10:50:57,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201155523] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:50:57,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385716495] [2023-08-30 10:50:57,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:50:57,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:50:57,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:50:57,753 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 10:50:57,756 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 10:50:57,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:50:57,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:50:57,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:50:57,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:50:57,855 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 10:50:57,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:50:57,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385716495] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:50:57,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:50:57,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 10:50:57,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721527489] [2023-08-30 10:50:57,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:50:57,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:50:57,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:50:57,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:50:57,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:50:57,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 386 out of 922 [2023-08-30 10:50:57,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 81 transitions, 316 flow. Second operand has 3 states, 3 states have (on average 387.0) internal successors, (1161), 3 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:57,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:50:57,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 386 of 922 [2023-08-30 10:50:57,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:51:04,150 INFO L130 PetriNetUnfolder]: 64646/89978 cut-off events. [2023-08-30 10:51:04,150 INFO L131 PetriNetUnfolder]: For 755/755 co-relation queries the response was YES. [2023-08-30 10:51:04,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182069 conditions, 89978 events. 64646/89978 cut-off events. For 755/755 co-relation queries the response was YES. Maximal size of possible extension queue 3484. Compared 597623 event pairs, 55565 based on Foata normal form. 1/36189 useless extension candidates. Maximal degree in co-relation 145561. Up to 89973 conditions per place. [2023-08-30 10:51:04,548 INFO L137 encePairwiseOnDemand]: 919/922 looper letters, 74 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2023-08-30 10:51:04,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 80 transitions, 466 flow [2023-08-30 10:51:04,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:51:04,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:51:04,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1219 transitions. [2023-08-30 10:51:04,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44070860448300797 [2023-08-30 10:51:04,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1219 transitions. [2023-08-30 10:51:04,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1219 transitions. [2023-08-30 10:51:04,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:51:04,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1219 transitions. [2023-08-30 10:51:04,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:04,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 922.0) internal successors, (3688), 4 states have internal predecessors, (3688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:04,565 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 922.0) internal successors, (3688), 4 states have internal predecessors, (3688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:04,565 INFO L175 Difference]: Start difference. First operand has 71 places, 81 transitions, 316 flow. Second operand 3 states and 1219 transitions. [2023-08-30 10:51:04,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 80 transitions, 466 flow [2023-08-30 10:51:04,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 80 transitions, 445 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 10:51:04,573 INFO L231 Difference]: Finished difference. Result has 69 places, 80 transitions, 297 flow [2023-08-30 10:51:04,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=922, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=297, PETRI_PLACES=69, PETRI_TRANSITIONS=80} [2023-08-30 10:51:04,574 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-08-30 10:51:04,574 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 80 transitions, 297 flow [2023-08-30 10:51:04,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 387.0) internal successors, (1161), 3 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:04,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:51:04,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 10:51:04,584 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 10:51:04,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:51:04,781 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 10:51:04,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:51:04,781 INFO L85 PathProgramCache]: Analyzing trace with hash -173559524, now seen corresponding path program 1 times [2023-08-30 10:51:04,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:51:04,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535606393] [2023-08-30 10:51:04,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:04,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:51:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:04,907 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 10:51:04,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:51:04,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535606393] [2023-08-30 10:51:04,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535606393] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:51:04,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:51:04,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:51:04,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074640269] [2023-08-30 10:51:04,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:51:04,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:51:04,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:51:04,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:51:04,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:51:05,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 377 out of 922 [2023-08-30 10:51:05,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 80 transitions, 297 flow. Second operand has 4 states, 4 states have (on average 378.5) internal successors, (1514), 4 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:05,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:51:05,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 377 of 922 [2023-08-30 10:51:05,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:51:17,928 INFO L130 PetriNetUnfolder]: 134531/186536 cut-off events. [2023-08-30 10:51:17,928 INFO L131 PetriNetUnfolder]: For 1651/1651 co-relation queries the response was YES. [2023-08-30 10:51:18,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377342 conditions, 186536 events. 134531/186536 cut-off events. For 1651/1651 co-relation queries the response was YES. Maximal size of possible extension queue 6908. Compared 1332699 event pairs, 112931 based on Foata normal form. 0/75638 useless extension candidates. Maximal degree in co-relation 239963. Up to 85707 conditions per place. [2023-08-30 10:51:18,904 INFO L137 encePairwiseOnDemand]: 915/922 looper letters, 194 selfloop transitions, 6 changer transitions 0/200 dead transitions. [2023-08-30 10:51:18,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 200 transitions, 1029 flow [2023-08-30 10:51:18,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:51:18,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:51:18,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2059 transitions. [2023-08-30 10:51:18,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4466377440347072 [2023-08-30 10:51:18,909 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2059 transitions. [2023-08-30 10:51:18,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2059 transitions. [2023-08-30 10:51:18,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:51:18,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2059 transitions. [2023-08-30 10:51:18,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 411.8) internal successors, (2059), 5 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:18,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 922.0) internal successors, (5532), 6 states have internal predecessors, (5532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:18,922 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 922.0) internal successors, (5532), 6 states have internal predecessors, (5532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:18,922 INFO L175 Difference]: Start difference. First operand has 69 places, 80 transitions, 297 flow. Second operand 5 states and 2059 transitions. [2023-08-30 10:51:18,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 200 transitions, 1029 flow [2023-08-30 10:51:18,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 200 transitions, 1017 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:51:18,926 INFO L231 Difference]: Finished difference. Result has 74 places, 83 transitions, 330 flow [2023-08-30 10:51:18,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=922, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=330, PETRI_PLACES=74, PETRI_TRANSITIONS=83} [2023-08-30 10:51:18,927 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 2 predicate places. [2023-08-30 10:51:18,927 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 83 transitions, 330 flow [2023-08-30 10:51:18,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 378.5) internal successors, (1514), 4 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:18,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:51:18,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:51:18,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 10:51:18,928 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 10:51:18,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:51:18,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1108307414, now seen corresponding path program 1 times [2023-08-30 10:51:18,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:51:18,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096109291] [2023-08-30 10:51:18,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:18,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:51:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:19,053 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 10:51:19,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:51:19,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096109291] [2023-08-30 10:51:19,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096109291] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:51:19,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993487982] [2023-08-30 10:51:19,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:19,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:51:19,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:51:19,056 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:51:19,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 10:51:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:19,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 10:51:19,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:51:19,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:51:19,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:51:19,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993487982] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:51:19,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:51:19,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-30 10:51:19,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69361125] [2023-08-30 10:51:19,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:51:19,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:51:19,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:51:19,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:51:19,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:51:19,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 922 [2023-08-30 10:51:19,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 83 transitions, 330 flow. Second operand has 3 states, 3 states have (on average 391.3333333333333) internal successors, (1174), 3 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:19,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:51:19,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 922 [2023-08-30 10:51:19,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:51:31,348 INFO L130 PetriNetUnfolder]: 127729/177706 cut-off events. [2023-08-30 10:51:31,348 INFO L131 PetriNetUnfolder]: For 13793/13793 co-relation queries the response was YES. [2023-08-30 10:51:31,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362895 conditions, 177706 events. 127729/177706 cut-off events. For 13793/13793 co-relation queries the response was YES. Maximal size of possible extension queue 6725. Compared 1275561 event pairs, 109051 based on Foata normal form. 3718/78886 useless extension candidates. Maximal degree in co-relation 230334. Up to 177706 conditions per place. [2023-08-30 10:51:32,204 INFO L137 encePairwiseOnDemand]: 920/922 looper letters, 80 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2023-08-30 10:51:32,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 81 transitions, 482 flow [2023-08-30 10:51:32,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:51:32,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:51:32,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1227 transitions. [2023-08-30 10:51:32,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4436008676789588 [2023-08-30 10:51:32,207 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1227 transitions. [2023-08-30 10:51:32,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1227 transitions. [2023-08-30 10:51:32,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:51:32,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1227 transitions. [2023-08-30 10:51:32,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 409.0) internal successors, (1227), 3 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:32,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 922.0) internal successors, (3688), 4 states have internal predecessors, (3688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:32,215 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 922.0) internal successors, (3688), 4 states have internal predecessors, (3688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:32,215 INFO L175 Difference]: Start difference. First operand has 74 places, 83 transitions, 330 flow. Second operand 3 states and 1227 transitions. [2023-08-30 10:51:32,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 81 transitions, 482 flow [2023-08-30 10:51:32,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 81 transitions, 474 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 10:51:32,221 INFO L231 Difference]: Finished difference. Result has 73 places, 81 transitions, 314 flow [2023-08-30 10:51:32,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=922, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=73, PETRI_TRANSITIONS=81} [2023-08-30 10:51:32,222 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 1 predicate places. [2023-08-30 10:51:32,222 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 81 transitions, 314 flow [2023-08-30 10:51:32,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 391.3333333333333) internal successors, (1174), 3 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:32,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:51:32,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:51:32,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 10:51:32,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:51:32,428 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 10:51:32,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:51:32,428 INFO L85 PathProgramCache]: Analyzing trace with hash 758723248, now seen corresponding path program 1 times [2023-08-30 10:51:32,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:51:32,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662060708] [2023-08-30 10:51:32,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:32,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:51:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:32,528 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 10:51:32,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:51:32,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662060708] [2023-08-30 10:51:32,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662060708] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:51:32,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939149685] [2023-08-30 10:51:32,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:32,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:51:32,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:51:32,531 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:51:32,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 10:51:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:32,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 10:51:32,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:51:32,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:51:32,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:51:32,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939149685] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:51:32,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:51:32,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 10:51:32,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88669861] [2023-08-30 10:51:32,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:51:32,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:51:32,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:51:32,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:51:32,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:51:32,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 922 [2023-08-30 10:51:32,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 81 transitions, 314 flow. Second operand has 4 states, 4 states have (on average 388.75) internal successors, (1555), 4 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:32,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:51:32,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 922 [2023-08-30 10:51:32,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:51:43,431 INFO L130 PetriNetUnfolder]: 112997/157258 cut-off events. [2023-08-30 10:51:43,431 INFO L131 PetriNetUnfolder]: For 6140/6140 co-relation queries the response was YES. [2023-08-30 10:51:43,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318471 conditions, 157258 events. 112997/157258 cut-off events. For 6140/6140 co-relation queries the response was YES. Maximal size of possible extension queue 5942. Compared 1113517 event pairs, 95887 based on Foata normal form. 1550/68080 useless extension candidates. Maximal degree in co-relation 318456. Up to 157252 conditions per place. [2023-08-30 10:51:44,028 INFO L137 encePairwiseOnDemand]: 918/922 looper letters, 73 selfloop transitions, 6 changer transitions 0/79 dead transitions. [2023-08-30 10:51:44,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 79 transitions, 464 flow [2023-08-30 10:51:44,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:51:44,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:51:44,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1607 transitions. [2023-08-30 10:51:44,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43573752711496744 [2023-08-30 10:51:44,032 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1607 transitions. [2023-08-30 10:51:44,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1607 transitions. [2023-08-30 10:51:44,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:51:44,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1607 transitions. [2023-08-30 10:51:44,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 401.75) internal successors, (1607), 4 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:44,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 922.0) internal successors, (4610), 5 states have internal predecessors, (4610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:44,041 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 922.0) internal successors, (4610), 5 states have internal predecessors, (4610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:44,041 INFO L175 Difference]: Start difference. First operand has 73 places, 81 transitions, 314 flow. Second operand 4 states and 1607 transitions. [2023-08-30 10:51:44,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 79 transitions, 464 flow [2023-08-30 10:51:44,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 79 transitions, 461 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:51:44,043 INFO L231 Difference]: Finished difference. Result has 72 places, 79 transitions, 315 flow [2023-08-30 10:51:44,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=922, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=315, PETRI_PLACES=72, PETRI_TRANSITIONS=79} [2023-08-30 10:51:44,044 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2023-08-30 10:51:44,044 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 79 transitions, 315 flow [2023-08-30 10:51:44,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 388.75) internal successors, (1555), 4 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:44,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:51:44,045 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 10:51:44,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 10:51:44,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:51:44,251 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 10:51:44,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:51:44,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1109071732, now seen corresponding path program 1 times [2023-08-30 10:51:44,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:51:44,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585975346] [2023-08-30 10:51:44,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:44,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:51:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:44,347 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:51:44,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:51:44,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585975346] [2023-08-30 10:51:44,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585975346] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:51:44,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258557425] [2023-08-30 10:51:44,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:44,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:51:44,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:51:44,353 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:51:44,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 10:51:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:44,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 10:51:44,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:51:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:51:44,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:51:44,519 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:51:44,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258557425] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:51:44,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:51:44,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 10:51:44,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827118774] [2023-08-30 10:51:44,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:51:44,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:51:44,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:51:44,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:51:44,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:51:44,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 922 [2023-08-30 10:51:44,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 79 transitions, 315 flow. Second operand has 13 states, 13 states have (on average 384.15384615384613) internal successors, (4994), 13 states have internal predecessors, (4994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:44,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:51:44,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 922 [2023-08-30 10:51:44,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:52:08,421 INFO L130 PetriNetUnfolder]: 236267/328810 cut-off events. [2023-08-30 10:52:08,421 INFO L131 PetriNetUnfolder]: For 3188/3188 co-relation queries the response was YES. [2023-08-30 10:52:08,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 665852 conditions, 328810 events. 236267/328810 cut-off events. For 3188/3188 co-relation queries the response was YES. Maximal size of possible extension queue 8292. Compared 2434858 event pairs, 200491 based on Foata normal form. 24/139130 useless extension candidates. Maximal degree in co-relation 665837. Up to 42910 conditions per place. [2023-08-30 10:52:09,794 INFO L137 encePairwiseOnDemand]: 914/922 looper letters, 546 selfloop transitions, 53 changer transitions 0/599 dead transitions. [2023-08-30 10:52:09,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 599 transitions, 2745 flow [2023-08-30 10:52:09,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:52:09,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:52:09,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 5205 transitions. [2023-08-30 10:52:09,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47044468546637747 [2023-08-30 10:52:09,802 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 5205 transitions. [2023-08-30 10:52:09,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 5205 transitions. [2023-08-30 10:52:09,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:52:09,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 5205 transitions. [2023-08-30 10:52:09,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 433.75) internal successors, (5205), 12 states have internal predecessors, (5205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:52:09,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 922.0) internal successors, (11986), 13 states have internal predecessors, (11986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:52:09,826 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 922.0) internal successors, (11986), 13 states have internal predecessors, (11986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:52:09,826 INFO L175 Difference]: Start difference. First operand has 72 places, 79 transitions, 315 flow. Second operand 12 states and 5205 transitions. [2023-08-30 10:52:09,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 599 transitions, 2745 flow [2023-08-30 10:52:09,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 599 transitions, 2732 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:52:09,834 INFO L231 Difference]: Finished difference. Result has 87 places, 109 transitions, 678 flow [2023-08-30 10:52:09,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=922, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=678, PETRI_PLACES=87, PETRI_TRANSITIONS=109} [2023-08-30 10:52:09,835 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 15 predicate places. [2023-08-30 10:52:09,836 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 109 transitions, 678 flow [2023-08-30 10:52:09,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 384.15384615384613) internal successors, (4994), 13 states have internal predecessors, (4994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:52:09,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:52:09,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:52:09,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 10:52:10,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:52:10,043 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 10:52:10,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:52:10,044 INFO L85 PathProgramCache]: Analyzing trace with hash 713143274, now seen corresponding path program 1 times [2023-08-30 10:52:10,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:52:10,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829958939] [2023-08-30 10:52:10,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:52:10,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:52:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:52:10,131 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 10:52:10,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:52:10,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829958939] [2023-08-30 10:52:10,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829958939] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:52:10,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:52:10,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:52:10,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5357001] [2023-08-30 10:52:10,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:52:10,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:52:10,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:52:10,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:52:10,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:52:10,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 374 out of 922 [2023-08-30 10:52:10,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 109 transitions, 678 flow. Second operand has 5 states, 5 states have (on average 375.6) internal successors, (1878), 5 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:52:10,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:52:10,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 374 of 922 [2023-08-30 10:52:10,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand