./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/09-regions_22-nocollapse.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/09-regions_22-nocollapse.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 13:50:44,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 13:50:44,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 13:50:44,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 13:50:44,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 13:50:44,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 13:50:44,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 13:50:44,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 13:50:44,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 13:50:44,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 13:50:44,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 13:50:44,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 13:50:44,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 13:50:44,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 13:50:44,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 13:50:44,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 13:50:44,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 13:50:44,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 13:50:44,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 13:50:44,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 13:50:44,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 13:50:44,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 13:50:44,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 13:50:44,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 13:50:44,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 13:50:44,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 13:50:44,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 13:50:44,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 13:50:44,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 13:50:44,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 13:50:44,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 13:50:44,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 13:50:44,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 13:50:44,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 13:50:44,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 13:50:44,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 13:50:44,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 13:50:44,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 13:50:44,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 13:50:44,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 13:50:44,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 13:50:44,362 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 13:50:44,392 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 13:50:44,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 13:50:44,394 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 13:50:44,394 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 13:50:44,395 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 13:50:44,395 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 13:50:44,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 13:50:44,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 13:50:44,396 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 13:50:44,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 13:50:44,397 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 13:50:44,397 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 13:50:44,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 13:50:44,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 13:50:44,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 13:50:44,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 13:50:44,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 13:50:44,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 13:50:44,399 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 13:50:44,399 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 13:50:44,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 13:50:44,399 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 13:50:44,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 13:50:44,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 13:50:44,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 13:50:44,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 13:50:44,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 13:50:44,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 13:50:44,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 13:50:44,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 13:50:44,401 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 13:50:44,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 13:50:44,402 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 13:50:44,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 13:50:44,402 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 13:50:44,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 13:50:44,402 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 13:50:44,403 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 13:50:44,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 13:50:44,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 13:50:44,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 13:50:44,740 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 13:50:44,741 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 13:50:44,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_22-nocollapse.i [2023-08-30 13:50:45,871 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 13:50:46,150 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 13:50:46,151 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_22-nocollapse.i [2023-08-30 13:50:46,173 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7281a7849/badc505931bd41a98244d4d6be6e3f7a/FLAG0f1bd0f95 [2023-08-30 13:50:46,188 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7281a7849/badc505931bd41a98244d4d6be6e3f7a [2023-08-30 13:50:46,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 13:50:46,191 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 13:50:46,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 13:50:46,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 13:50:46,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 13:50:46,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:50:46" (1/1) ... [2023-08-30 13:50:46,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ab7d0a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:50:46, skipping insertion in model container [2023-08-30 13:50:46,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:50:46" (1/1) ... [2023-08-30 13:50:46,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 13:50:46,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 13:50:46,680 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 13:50:46,681 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 13:50:46,682 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 13:50:46,683 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 13:50:46,716 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 13:50:46,732 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 13:50:46,774 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 13:50:46,777 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 13:50:46,777 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 13:50:46,778 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 13:50:46,788 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 13:50:46,851 INFO L208 MainTranslator]: Completed translation [2023-08-30 13:50:46,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:50:46 WrapperNode [2023-08-30 13:50:46,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 13:50:46,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 13:50:46,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 13:50:46,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 13:50:46,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:50:46" (1/1) ... [2023-08-30 13:50:46,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:50:46" (1/1) ... [2023-08-30 13:50:46,931 INFO L138 Inliner]: procedures = 272, calls = 35, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 139 [2023-08-30 13:50:46,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 13:50:46,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 13:50:46,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 13:50:46,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 13:50:46,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:50:46" (1/1) ... [2023-08-30 13:50:46,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:50:46" (1/1) ... [2023-08-30 13:50:46,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:50:46" (1/1) ... [2023-08-30 13:50:46,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:50:46" (1/1) ... [2023-08-30 13:50:46,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:50:46" (1/1) ... [2023-08-30 13:50:46,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:50:46" (1/1) ... [2023-08-30 13:50:46,957 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:50:46" (1/1) ... [2023-08-30 13:50:46,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:50:46" (1/1) ... [2023-08-30 13:50:46,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 13:50:46,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 13:50:46,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 13:50:46,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 13:50:46,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:50:46" (1/1) ... [2023-08-30 13:50:46,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 13:50:46,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:50:46,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 13:50:47,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 13:50:47,037 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-08-30 13:50:47,037 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-08-30 13:50:47,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 13:50:47,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 13:50:47,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 13:50:47,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 13:50:47,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 13:50:47,038 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 13:50:47,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 13:50:47,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 13:50:47,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 13:50:47,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 13:50:47,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 13:50:47,040 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 13:50:47,207 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 13:50:47,209 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 13:50:47,506 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 13:50:47,513 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 13:50:47,513 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 13:50:47,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:50:47 BoogieIcfgContainer [2023-08-30 13:50:47,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 13:50:47,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 13:50:47,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 13:50:47,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 13:50:47,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 01:50:46" (1/3) ... [2023-08-30 13:50:47,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dafa4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:50:47, skipping insertion in model container [2023-08-30 13:50:47,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:50:46" (2/3) ... [2023-08-30 13:50:47,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dafa4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:50:47, skipping insertion in model container [2023-08-30 13:50:47,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:50:47" (3/3) ... [2023-08-30 13:50:47,525 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_22-nocollapse.i [2023-08-30 13:50:47,531 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 13:50:47,539 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 13:50:47,540 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 13:50:47,540 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 13:50:47,643 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 13:50:47,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 203 transitions, 416 flow [2023-08-30 13:50:47,759 INFO L130 PetriNetUnfolder]: 15/201 cut-off events. [2023-08-30 13:50:47,759 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:50:47,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 201 events. 15/201 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 498 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 144. Up to 2 conditions per place. [2023-08-30 13:50:47,767 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 203 transitions, 416 flow [2023-08-30 13:50:47,776 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 201 transitions, 408 flow [2023-08-30 13:50:47,779 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 13:50:47,793 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 201 transitions, 408 flow [2023-08-30 13:50:47,795 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 201 transitions, 408 flow [2023-08-30 13:50:47,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 201 transitions, 408 flow [2023-08-30 13:50:47,825 INFO L130 PetriNetUnfolder]: 15/201 cut-off events. [2023-08-30 13:50:47,826 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:50:47,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 201 events. 15/201 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 498 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 144. Up to 2 conditions per place. [2023-08-30 13:50:47,831 INFO L119 LiptonReduction]: Number of co-enabled transitions 7154 [2023-08-30 13:51:21,641 WARN L222 SmtUtils]: Spent 13.23s on a formula simplification. DAG size of input: 181 DAG size of output: 179 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 13:51:27,202 WARN L222 SmtUtils]: Spent 5.56s on a formula simplification that was a NOOP. DAG size: 177 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 13:51:38,131 WARN L222 SmtUtils]: Spent 10.93s on a formula simplification. DAG size of input: 181 DAG size of output: 179 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 13:51:44,071 WARN L222 SmtUtils]: Spent 5.94s on a formula simplification that was a NOOP. DAG size: 177 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 13:51:57,364 WARN L222 SmtUtils]: Spent 13.21s on a formula simplification. DAG size of input: 182 DAG size of output: 181 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 13:52:02,537 WARN L222 SmtUtils]: Spent 5.17s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 13:52:08,856 WARN L222 SmtUtils]: Spent 6.32s on a formula simplification. DAG size of input: 184 DAG size of output: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 13:52:13,002 INFO L134 LiptonReduction]: Checked pairs total: 6912 [2023-08-30 13:52:13,002 INFO L136 LiptonReduction]: Total number of compositions: 210 [2023-08-30 13:52:13,014 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 13:52:13,018 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;@1c522c90, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 13:52:13,018 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 13:52:13,023 INFO L130 PetriNetUnfolder]: 2/6 cut-off events. [2023-08-30 13:52:13,023 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:52:13,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:52:13,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 13:52:13,024 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 13:52:13,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:52:13,028 INFO L85 PathProgramCache]: Analyzing trace with hash 688055, now seen corresponding path program 1 times [2023-08-30 13:52:13,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:52:13,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978963204] [2023-08-30 13:52:13,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:13,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:52:13,129 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 13:52:13,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158861324] [2023-08-30 13:52:13,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:13,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:52:13,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:52:13,133 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:52:13,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 13:52:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:52:13,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 13:52:13,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:52:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:52:13,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:52:13,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:52:13,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978963204] [2023-08-30 13:52:13,292 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 13:52:13,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158861324] [2023-08-30 13:52:13,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158861324] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:52:13,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:52:13,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 13:52:13,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110385541] [2023-08-30 13:52:13,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:52:13,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:52:13,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:52:13,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:52:13,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:52:13,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 413 [2023-08-30 13:52:13,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:13,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:52:13,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 413 [2023-08-30 13:52:13,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:52:13,745 INFO L130 PetriNetUnfolder]: 436/710 cut-off events. [2023-08-30 13:52:13,746 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 13:52:13,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 710 events. 436/710 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2745 event pairs, 340 based on Foata normal form. 0/425 useless extension candidates. Maximal degree in co-relation 1412. Up to 706 conditions per place. [2023-08-30 13:52:13,756 INFO L137 encePairwiseOnDemand]: 404/413 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-08-30 13:52:13,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 174 flow [2023-08-30 13:52:13,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:52:13,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:52:13,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 607 transitions. [2023-08-30 13:52:13,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48991121872477805 [2023-08-30 13:52:13,777 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 607 transitions. [2023-08-30 13:52:13,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 607 transitions. [2023-08-30 13:52:13,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:52:13,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 607 transitions. [2023-08-30 13:52:13,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:13,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:13,800 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:13,802 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 84 flow. Second operand 3 states and 607 transitions. [2023-08-30 13:52:13,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 174 flow [2023-08-30 13:52:13,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 13:52:13,806 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 110 flow [2023-08-30 13:52:13,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=41, PETRI_TRANSITIONS=40} [2023-08-30 13:52:13,813 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-30 13:52:13,813 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 110 flow [2023-08-30 13:52:13,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:13,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:52:13,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 13:52:13,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 13:52:14,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-08-30 13:52:14,023 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 13:52:14,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:52:14,023 INFO L85 PathProgramCache]: Analyzing trace with hash 688179, now seen corresponding path program 1 times [2023-08-30 13:52:14,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:52:14,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113617404] [2023-08-30 13:52:14,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:14,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:52:14,059 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 13:52:14,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [539309880] [2023-08-30 13:52:14,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:14,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:52:14,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:52:14,071 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:52:14,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 13:52:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:52:14,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 13:52:14,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:52:14,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:52:14,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:52:14,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:52:14,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113617404] [2023-08-30 13:52:14,214 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 13:52:14,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539309880] [2023-08-30 13:52:14,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539309880] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:52:14,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:52:14,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:52:14,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254067241] [2023-08-30 13:52:14,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:52:14,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:52:14,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:52:14,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:52:14,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:52:14,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 413 [2023-08-30 13:52:14,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:14,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:52:14,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 413 [2023-08-30 13:52:14,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:52:14,414 INFO L130 PetriNetUnfolder]: 435/708 cut-off events. [2023-08-30 13:52:14,414 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 13:52:14,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1454 conditions, 708 events. 435/708 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2738 event pairs, 340 based on Foata normal form. 2/430 useless extension candidates. Maximal degree in co-relation 1438. Up to 707 conditions per place. [2023-08-30 13:52:14,418 INFO L137 encePairwiseOnDemand]: 411/413 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-08-30 13:52:14,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 39 transitions, 180 flow [2023-08-30 13:52:14,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:52:14,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:52:14,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 603 transitions. [2023-08-30 13:52:14,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48668280871670705 [2023-08-30 13:52:14,422 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 603 transitions. [2023-08-30 13:52:14,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 603 transitions. [2023-08-30 13:52:14,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:52:14,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 603 transitions. [2023-08-30 13:52:14,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:14,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:14,428 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:14,428 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 110 flow. Second operand 3 states and 603 transitions. [2023-08-30 13:52:14,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 39 transitions, 180 flow [2023-08-30 13:52:14,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 13:52:14,431 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 103 flow [2023-08-30 13:52:14,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-08-30 13:52:14,432 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-30 13:52:14,432 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 103 flow [2023-08-30 13:52:14,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:14,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:52:14,433 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-08-30 13:52:14,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 13:52:14,638 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,SelfDestructingSolverStorable1 [2023-08-30 13:52:14,639 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 13:52:14,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:52:14,639 INFO L85 PathProgramCache]: Analyzing trace with hash 661349608, now seen corresponding path program 1 times [2023-08-30 13:52:14,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:52:14,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066629772] [2023-08-30 13:52:14,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:14,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:52:14,690 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 13:52:14,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1988728895] [2023-08-30 13:52:14,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:14,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:52:14,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:52:14,692 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:52:14,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 13:52:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:52:14,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-30 13:52:14,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:52:14,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:52:14,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:52:14,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:52:14,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066629772] [2023-08-30 13:52:14,801 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 13:52:14,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988728895] [2023-08-30 13:52:14,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988728895] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:52:14,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:52:14,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 13:52:14,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304865062] [2023-08-30 13:52:14,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:52:14,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:52:14,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:52:14,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:52:14,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:52:14,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 413 [2023-08-30 13:52:14,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:14,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:52:14,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 413 [2023-08-30 13:52:14,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:52:15,068 INFO L130 PetriNetUnfolder]: 435/712 cut-off events. [2023-08-30 13:52:15,069 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:52:15,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1465 conditions, 712 events. 435/712 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2784 event pairs, 340 based on Foata normal form. 1/432 useless extension candidates. Maximal degree in co-relation 1454. Up to 709 conditions per place. [2023-08-30 13:52:15,073 INFO L137 encePairwiseOnDemand]: 408/413 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-08-30 13:52:15,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 197 flow [2023-08-30 13:52:15,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:52:15,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:52:15,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 607 transitions. [2023-08-30 13:52:15,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48991121872477805 [2023-08-30 13:52:15,075 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 607 transitions. [2023-08-30 13:52:15,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 607 transitions. [2023-08-30 13:52:15,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:52:15,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 607 transitions. [2023-08-30 13:52:15,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:15,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:15,081 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:15,081 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 103 flow. Second operand 3 states and 607 transitions. [2023-08-30 13:52:15,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 197 flow [2023-08-30 13:52:15,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 197 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 13:52:15,082 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 124 flow [2023-08-30 13:52:15,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-08-30 13:52:15,083 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2023-08-30 13:52:15,083 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 124 flow [2023-08-30 13:52:15,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:15,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:52:15,084 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 13:52:15,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 13:52:15,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:52:15,292 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 13:52:15,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:52:15,293 INFO L85 PathProgramCache]: Analyzing trace with hash -972591499, now seen corresponding path program 1 times [2023-08-30 13:52:15,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:52:15,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561452607] [2023-08-30 13:52:15,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:15,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:52:15,332 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 13:52:15,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [789070195] [2023-08-30 13:52:15,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:15,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:52:15,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:52:15,340 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:52:15,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 13:52:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:52:15,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 13:52:15,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:52:15,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:52:15,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:52:15,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:52:15,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:52:15,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561452607] [2023-08-30 13:52:15,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 13:52:15,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789070195] [2023-08-30 13:52:15,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789070195] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:52:15,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 13:52:15,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-30 13:52:15,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961480729] [2023-08-30 13:52:15,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 13:52:15,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 13:52:15,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:52:15,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 13:52:15,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 13:52:15,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 413 [2023-08-30 13:52:15,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 124 flow. Second operand has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:15,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:52:15,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 413 [2023-08-30 13:52:15,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:52:16,084 INFO L130 PetriNetUnfolder]: 437/724 cut-off events. [2023-08-30 13:52:16,084 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 13:52:16,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 724 events. 437/724 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2836 event pairs, 340 based on Foata normal form. 6/447 useless extension candidates. Maximal degree in co-relation 1501. Up to 707 conditions per place. [2023-08-30 13:52:16,088 INFO L137 encePairwiseOnDemand]: 406/413 looper letters, 43 selfloop transitions, 8 changer transitions 0/51 dead transitions. [2023-08-30 13:52:16,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 51 transitions, 270 flow [2023-08-30 13:52:16,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 13:52:16,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 13:52:16,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1180 transitions. [2023-08-30 13:52:16,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2023-08-30 13:52:16,093 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1180 transitions. [2023-08-30 13:52:16,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1180 transitions. [2023-08-30 13:52:16,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:52:16,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1180 transitions. [2023-08-30 13:52:16,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 196.66666666666666) internal successors, (1180), 6 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:16,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 413.0) internal successors, (2891), 7 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:16,101 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 413.0) internal successors, (2891), 7 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:16,102 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 124 flow. Second operand 6 states and 1180 transitions. [2023-08-30 13:52:16,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 51 transitions, 270 flow [2023-08-30 13:52:16,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 267 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:52:16,105 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 200 flow [2023-08-30 13:52:16,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2023-08-30 13:52:16,106 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 12 predicate places. [2023-08-30 13:52:16,106 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 200 flow [2023-08-30 13:52:16,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:16,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:52:16,107 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-30 13:52:16,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 13:52:16,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:52:16,314 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 13:52:16,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:52:16,314 INFO L85 PathProgramCache]: Analyzing trace with hash -219684824, now seen corresponding path program 2 times [2023-08-30 13:52:16,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:52:16,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585030898] [2023-08-30 13:52:16,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:16,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:52:16,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 13:52:16,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1308104409] [2023-08-30 13:52:16,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 13:52:16,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:52:16,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:52:16,371 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:52:16,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 13:52:16,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 13:52:16,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:52:16,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 13:52:16,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:52:16,585 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-30 13:52:16,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:52:16,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:52:16,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585030898] [2023-08-30 13:52:16,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 13:52:16,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308104409] [2023-08-30 13:52:16,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308104409] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:52:16,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:52:16,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:52:16,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838830584] [2023-08-30 13:52:16,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:52:16,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:52:16,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:52:16,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:52:16,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:52:16,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 413 [2023-08-30 13:52:16,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:16,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:52:16,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 413 [2023-08-30 13:52:16,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:52:16,852 INFO L130 PetriNetUnfolder]: 437/722 cut-off events. [2023-08-30 13:52:16,852 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-30 13:52:16,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1552 conditions, 722 events. 437/722 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2828 event pairs, 340 based on Foata normal form. 1/441 useless extension candidates. Maximal degree in co-relation 1533. Up to 721 conditions per place. [2023-08-30 13:52:16,856 INFO L137 encePairwiseOnDemand]: 409/413 looper letters, 42 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-08-30 13:52:16,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 290 flow [2023-08-30 13:52:16,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:52:16,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:52:16,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2023-08-30 13:52:16,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826472962066182 [2023-08-30 13:52:16,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2023-08-30 13:52:16,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2023-08-30 13:52:16,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:52:16,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2023-08-30 13:52:16,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:16,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:16,862 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:16,863 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 200 flow. Second operand 3 states and 598 transitions. [2023-08-30 13:52:16,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 290 flow [2023-08-30 13:52:16,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 45 transitions, 279 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 13:52:16,865 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 202 flow [2023-08-30 13:52:16,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2023-08-30 13:52:16,866 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2023-08-30 13:52:16,866 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 202 flow [2023-08-30 13:52:16,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:16,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:52:16,867 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-08-30 13:52:16,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 13:52:17,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:52:17,073 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 13:52:17,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:52:17,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1779709491, now seen corresponding path program 3 times [2023-08-30 13:52:17,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:52:17,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865394737] [2023-08-30 13:52:17,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:17,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:52:17,156 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 13:52:17,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [335461980] [2023-08-30 13:52:17,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 13:52:17,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:52:17,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:52:17,170 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:52:17,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 13:52:17,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 13:52:17,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:52:17,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 13:52:17,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:52:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 13:52:17,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:52:17,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:52:17,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865394737] [2023-08-30 13:52:17,530 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 13:52:17,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335461980] [2023-08-30 13:52:17,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335461980] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:52:17,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:52:17,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 13:52:17,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478152615] [2023-08-30 13:52:17,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:52:17,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 13:52:17,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:52:17,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 13:52:17,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 13:52:17,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 413 [2023-08-30 13:52:17,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 184.16666666666666) internal successors, (1105), 6 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:17,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:52:17,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 413 [2023-08-30 13:52:17,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:52:18,003 INFO L130 PetriNetUnfolder]: 436/717 cut-off events. [2023-08-30 13:52:18,003 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2023-08-30 13:52:18,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 717 events. 436/717 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2814 event pairs, 340 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 1508. Up to 709 conditions per place. [2023-08-30 13:52:18,007 INFO L137 encePairwiseOnDemand]: 407/413 looper letters, 43 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2023-08-30 13:52:18,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 299 flow [2023-08-30 13:52:18,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 13:52:18,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 13:52:18,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 956 transitions. [2023-08-30 13:52:18,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.462953995157385 [2023-08-30 13:52:18,010 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 956 transitions. [2023-08-30 13:52:18,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 956 transitions. [2023-08-30 13:52:18,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:52:18,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 956 transitions. [2023-08-30 13:52:18,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 191.2) internal successors, (956), 5 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:18,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 413.0) internal successors, (2478), 6 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:18,016 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 413.0) internal successors, (2478), 6 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:18,016 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 202 flow. Second operand 5 states and 956 transitions. [2023-08-30 13:52:18,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 299 flow [2023-08-30 13:52:18,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 47 transitions, 291 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 13:52:18,018 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 185 flow [2023-08-30 13:52:18,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=185, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2023-08-30 13:52:18,019 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 15 predicate places. [2023-08-30 13:52:18,019 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 185 flow [2023-08-30 13:52:18,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 184.16666666666666) internal successors, (1105), 6 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:18,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:52:18,020 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-08-30 13:52:18,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 13:52:18,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:52:18,227 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 13:52:18,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:52:18,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1779709523, now seen corresponding path program 1 times [2023-08-30 13:52:18,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:52:18,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322009009] [2023-08-30 13:52:18,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:18,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:52:18,300 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 13:52:18,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1087225784] [2023-08-30 13:52:18,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:18,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:52:18,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:52:18,302 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:52:18,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 13:52:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:52:18,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 1299 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 13:52:18,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:52:18,789 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 13:52:18,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:52:18,842 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 13:52:18,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:52:18,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322009009] [2023-08-30 13:52:18,843 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 13:52:18,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087225784] [2023-08-30 13:52:18,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087225784] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:52:18,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 13:52:18,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-30 13:52:18,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681906265] [2023-08-30 13:52:18,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 13:52:18,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 13:52:18,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:52:18,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 13:52:18,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 13:52:18,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 413 [2023-08-30 13:52:18,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 185 flow. Second operand has 12 states, 12 states have (on average 188.33333333333334) internal successors, (2260), 12 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:18,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:52:18,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 413 [2023-08-30 13:52:18,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:52:19,929 INFO L130 PetriNetUnfolder]: 436/735 cut-off events. [2023-08-30 13:52:19,929 INFO L131 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2023-08-30 13:52:19,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1610 conditions, 735 events. 436/735 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2943 event pairs, 340 based on Foata normal form. 12/470 useless extension candidates. Maximal degree in co-relation 1588. Up to 706 conditions per place. [2023-08-30 13:52:19,933 INFO L137 encePairwiseOnDemand]: 408/413 looper letters, 43 selfloop transitions, 14 changer transitions 0/57 dead transitions. [2023-08-30 13:52:19,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 57 transitions, 399 flow [2023-08-30 13:52:19,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 13:52:19,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 13:52:19,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2310 transitions. [2023-08-30 13:52:19,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4661016949152542 [2023-08-30 13:52:19,950 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2310 transitions. [2023-08-30 13:52:19,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2310 transitions. [2023-08-30 13:52:19,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:52:19,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2310 transitions. [2023-08-30 13:52:19,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 192.5) internal successors, (2310), 12 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:19,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 413.0) internal successors, (5369), 13 states have internal predecessors, (5369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:19,963 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 413.0) internal successors, (5369), 13 states have internal predecessors, (5369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:19,963 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 185 flow. Second operand 12 states and 2310 transitions. [2023-08-30 13:52:19,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 57 transitions, 399 flow [2023-08-30 13:52:19,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 57 transitions, 393 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 13:52:19,966 INFO L231 Difference]: Finished difference. Result has 70 places, 50 transitions, 308 flow [2023-08-30 13:52:19,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=308, PETRI_PLACES=70, PETRI_TRANSITIONS=50} [2023-08-30 13:52:19,966 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 30 predicate places. [2023-08-30 13:52:19,967 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 50 transitions, 308 flow [2023-08-30 13:52:19,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 188.33333333333334) internal successors, (2260), 12 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:19,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:52:19,968 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 2, 1, 1, 1] [2023-08-30 13:52:19,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 13:52:20,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:52:20,176 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 13:52:20,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:52:20,177 INFO L85 PathProgramCache]: Analyzing trace with hash 126838131, now seen corresponding path program 2 times [2023-08-30 13:52:20,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:52:20,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854886836] [2023-08-30 13:52:20,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:20,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:52:20,289 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 13:52:20,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1661440361] [2023-08-30 13:52:20,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 13:52:20,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:52:20,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:52:20,293 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:52:20,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 13:52:21,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 13:52:21,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:52:21,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 13:52:21,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:52:21,191 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 13:52:21,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:52:21,380 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 13:52:21,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:52:21,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854886836] [2023-08-30 13:52:21,380 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 13:52:21,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661440361] [2023-08-30 13:52:21,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661440361] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:52:21,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 13:52:21,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-30 13:52:21,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845042532] [2023-08-30 13:52:21,381 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 13:52:21,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 13:52:21,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:52:21,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 13:52:21,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-30 13:52:21,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 413 [2023-08-30 13:52:21,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 50 transitions, 308 flow. Second operand has 24 states, 24 states have (on average 188.16666666666666) internal successors, (4516), 24 states have internal predecessors, (4516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:21,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:52:21,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 413 [2023-08-30 13:52:21,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:52:23,502 INFO L130 PetriNetUnfolder]: 436/771 cut-off events. [2023-08-30 13:52:23,502 INFO L131 PetriNetUnfolder]: For 1237/1237 co-relation queries the response was YES. [2023-08-30 13:52:23,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1881 conditions, 771 events. 436/771 cut-off events. For 1237/1237 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3029 event pairs, 340 based on Foata normal form. 24/518 useless extension candidates. Maximal degree in co-relation 1853. Up to 706 conditions per place. [2023-08-30 13:52:23,509 INFO L137 encePairwiseOnDemand]: 408/413 looper letters, 55 selfloop transitions, 26 changer transitions 0/81 dead transitions. [2023-08-30 13:52:23,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 81 transitions, 776 flow [2023-08-30 13:52:23,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 13:52:23,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 13:52:23,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4590 transitions. [2023-08-30 13:52:23,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46307506053268765 [2023-08-30 13:52:23,521 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4590 transitions. [2023-08-30 13:52:23,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4590 transitions. [2023-08-30 13:52:23,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:52:23,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4590 transitions. [2023-08-30 13:52:23,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 191.25) internal successors, (4590), 24 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:23,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 413.0) internal successors, (10325), 25 states have internal predecessors, (10325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:23,567 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 413.0) internal successors, (10325), 25 states have internal predecessors, (10325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:23,567 INFO L175 Difference]: Start difference. First operand has 70 places, 50 transitions, 308 flow. Second operand 24 states and 4590 transitions. [2023-08-30 13:52:23,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 81 transitions, 776 flow [2023-08-30 13:52:23,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 81 transitions, 708 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-08-30 13:52:23,572 INFO L231 Difference]: Finished difference. Result has 102 places, 63 transitions, 521 flow [2023-08-30 13:52:23,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=521, PETRI_PLACES=102, PETRI_TRANSITIONS=63} [2023-08-30 13:52:23,575 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 62 predicate places. [2023-08-30 13:52:23,575 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 63 transitions, 521 flow [2023-08-30 13:52:23,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 188.16666666666666) internal successors, (4516), 24 states have internal predecessors, (4516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:23,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:52:23,588 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 2, 1, 1, 1] [2023-08-30 13:52:23,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 13:52:23,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-08-30 13:52:23,800 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 13:52:23,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:52:23,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1509964723, now seen corresponding path program 3 times [2023-08-30 13:52:23,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:52:23,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365429340] [2023-08-30 13:52:23,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:23,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:52:24,022 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 13:52:24,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [957156346] [2023-08-30 13:52:24,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 13:52:24,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:52:24,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:52:24,024 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:52:24,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 13:52:24,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 13:52:24,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:52:24,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 13:52:24,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:52:24,919 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-08-30 13:52:24,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:52:25,077 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-08-30 13:52:25,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:52:25,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365429340] [2023-08-30 13:52:25,077 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 13:52:25,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957156346] [2023-08-30 13:52:25,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957156346] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:52:25,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 13:52:25,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-08-30 13:52:25,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870995532] [2023-08-30 13:52:25,078 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 13:52:25,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 13:52:25,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:52:25,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 13:52:25,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-08-30 13:52:25,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 413 [2023-08-30 13:52:25,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 63 transitions, 521 flow. Second operand has 10 states, 10 states have (on average 181.4) internal successors, (1814), 10 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:25,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:52:25,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 413 [2023-08-30 13:52:25,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:52:28,588 INFO L130 PetriNetUnfolder]: 869/1492 cut-off events. [2023-08-30 13:52:28,589 INFO L131 PetriNetUnfolder]: For 986/986 co-relation queries the response was YES. [2023-08-30 13:52:28,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3519 conditions, 1492 events. 869/1492 cut-off events. For 986/986 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5739 event pairs, 680 based on Foata normal form. 24/964 useless extension candidates. Maximal degree in co-relation 3477. Up to 741 conditions per place. [2023-08-30 13:52:28,599 INFO L137 encePairwiseOnDemand]: 406/413 looper letters, 128 selfloop transitions, 11 changer transitions 0/139 dead transitions. [2023-08-30 13:52:28,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 139 transitions, 1333 flow [2023-08-30 13:52:28,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 13:52:28,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 13:52:28,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2060 transitions. [2023-08-30 13:52:28,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45344486022452124 [2023-08-30 13:52:28,604 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2060 transitions. [2023-08-30 13:52:28,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2060 transitions. [2023-08-30 13:52:28,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:52:28,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2060 transitions. [2023-08-30 13:52:28,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 187.27272727272728) internal successors, (2060), 11 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:28,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 413.0) internal successors, (4956), 12 states have internal predecessors, (4956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:28,615 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 413.0) internal successors, (4956), 12 states have internal predecessors, (4956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:28,615 INFO L175 Difference]: Start difference. First operand has 102 places, 63 transitions, 521 flow. Second operand 11 states and 2060 transitions. [2023-08-30 13:52:28,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 139 transitions, 1333 flow [2023-08-30 13:52:28,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 139 transitions, 1186 flow, removed 42 selfloop flow, removed 10 redundant places. [2023-08-30 13:52:28,626 INFO L231 Difference]: Finished difference. Result has 105 places, 68 transitions, 558 flow [2023-08-30 13:52:28,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=558, PETRI_PLACES=105, PETRI_TRANSITIONS=68} [2023-08-30 13:52:28,627 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 65 predicate places. [2023-08-30 13:52:28,627 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 68 transitions, 558 flow [2023-08-30 13:52:28,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.4) internal successors, (1814), 10 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:28,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:52:28,628 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 3, 2, 1, 1] [2023-08-30 13:52:28,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 13:52:28,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:52:28,837 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 13:52:28,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:52:28,837 INFO L85 PathProgramCache]: Analyzing trace with hash 57136153, now seen corresponding path program 4 times [2023-08-30 13:52:28,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:52:28,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641546467] [2023-08-30 13:52:28,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:28,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:52:29,452 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 13:52:29,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [329689471] [2023-08-30 13:52:29,452 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 13:52:29,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:52:29,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:52:29,454 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:52:29,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 13:52:31,943 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 13:52:31,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:52:31,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 10933 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 13:52:32,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:52:32,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 600 proven. 253 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2023-08-30 13:52:32,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:52:32,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 600 proven. 253 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2023-08-30 13:52:32,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:52:32,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641546467] [2023-08-30 13:52:32,602 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 13:52:32,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329689471] [2023-08-30 13:52:32,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329689471] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:52:32,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 13:52:32,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2023-08-30 13:52:32,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871250493] [2023-08-30 13:52:32,603 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 13:52:32,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 13:52:32,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:52:32,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 13:52:32,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-08-30 13:52:32,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 413 [2023-08-30 13:52:32,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 68 transitions, 558 flow. Second operand has 32 states, 32 states have (on average 188.1875) internal successors, (6022), 32 states have internal predecessors, (6022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:32,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:52:32,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 413 [2023-08-30 13:52:32,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:52:35,522 INFO L130 PetriNetUnfolder]: 869/1524 cut-off events. [2023-08-30 13:52:35,522 INFO L131 PetriNetUnfolder]: For 7519/7519 co-relation queries the response was YES. [2023-08-30 13:52:35,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3641 conditions, 1524 events. 869/1524 cut-off events. For 7519/7519 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5789 event pairs, 680 based on Foata normal form. 24/996 useless extension candidates. Maximal degree in co-relation 3594. Up to 1405 conditions per place. [2023-08-30 13:52:35,534 INFO L137 encePairwiseOnDemand]: 409/413 looper letters, 62 selfloop transitions, 39 changer transitions 0/101 dead transitions. [2023-08-30 13:52:35,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 101 transitions, 1159 flow [2023-08-30 13:52:35,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 13:52:35,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 13:52:35,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6084 transitions. [2023-08-30 13:52:35,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603510895883777 [2023-08-30 13:52:35,547 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 6084 transitions. [2023-08-30 13:52:35,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 6084 transitions. [2023-08-30 13:52:35,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:52:35,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 6084 transitions. [2023-08-30 13:52:35,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 190.125) internal successors, (6084), 32 states have internal predecessors, (6084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:35,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 413.0) internal successors, (13629), 33 states have internal predecessors, (13629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:35,618 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 413.0) internal successors, (13629), 33 states have internal predecessors, (13629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:35,618 INFO L175 Difference]: Start difference. First operand has 105 places, 68 transitions, 558 flow. Second operand 32 states and 6084 transitions. [2023-08-30 13:52:35,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 101 transitions, 1159 flow [2023-08-30 13:52:35,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 101 transitions, 1139 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-30 13:52:35,632 INFO L231 Difference]: Finished difference. Result has 141 places, 77 transitions, 755 flow [2023-08-30 13:52:35,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=755, PETRI_PLACES=141, PETRI_TRANSITIONS=77} [2023-08-30 13:52:35,634 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 101 predicate places. [2023-08-30 13:52:35,634 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 77 transitions, 755 flow [2023-08-30 13:52:35,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 188.1875) internal successors, (6022), 32 states have internal predecessors, (6022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:52:35,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:52:35,636 INFO L208 CegarLoopForPetriNet]: trace histogram [62, 3, 2, 1, 1] [2023-08-30 13:52:35,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 13:52:35,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 13:52:35,861 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 13:52:35,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:52:35,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1205002215, now seen corresponding path program 5 times [2023-08-30 13:52:35,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:52:35,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255381485] [2023-08-30 13:52:35,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:52:35,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:52:36,413 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 13:52:36,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904079139] [2023-08-30 13:52:36,414 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 13:52:36,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:52:36,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:52:36,417 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:52:36,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process Killed by 15