./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.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 dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 10:37:29,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:37:29,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:37:29,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:37:29,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:37:29,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:37:29,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:37:29,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:37:29,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:37:29,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:37:29,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:37:29,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:37:29,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:37:29,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:37:29,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:37:29,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:37:29,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:37:29,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:37:29,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:37:29,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:37:29,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:37:29,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:37:29,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:37:29,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:37:29,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:37:29,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:37:29,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:37:29,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:37:29,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:37:29,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:37:29,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:37:29,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:37:29,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:37:29,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:37:29,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:37:29,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:37:29,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:37:29,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:37:29,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:37:29,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:37:29,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:37:29,397 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:37:29,430 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:37:29,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:37:29,431 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:37:29,432 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:37:29,432 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:37:29,433 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:37:29,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:37:29,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:37:29,434 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:37:29,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:37:29,435 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:37:29,435 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:37:29,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:37:29,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:37:29,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:37:29,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:37:29,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:37:29,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:37:29,436 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:37:29,436 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:37:29,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:37:29,437 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:37:29,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:37:29,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:37:29,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:37:29,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:37:29,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:37:29,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:37:29,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:37:29,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:37:29,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:37:29,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:37:29,439 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:37:29,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:37:29,439 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:37:29,439 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:37:29,440 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:37:29,440 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:37:29,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:37:29,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:37:29,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:37:29,779 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:37:29,780 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:37:29,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2023-08-30 10:37:31,004 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:37:31,287 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:37:31,288 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2023-08-30 10:37:31,306 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/103dcb066/eb987bdbe73944c582288ce45263a422/FLAG9e6014137 [2023-08-30 10:37:31,318 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/103dcb066/eb987bdbe73944c582288ce45263a422 [2023-08-30 10:37:31,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:37:31,321 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:37:31,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:37:31,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:37:31,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:37:31,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:37:31" (1/1) ... [2023-08-30 10:37:31,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2acee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:37:31, skipping insertion in model container [2023-08-30 10:37:31,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:37:31" (1/1) ... [2023-08-30 10:37:31,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:37:31,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:37:31,795 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2023-08-30 10:37:31,811 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 10:37:31,811 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 10:37:31,812 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 10:37:31,812 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 10:37:31,851 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:37:31,921 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:37:31,959 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2023-08-30 10:37:31,965 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 10:37:31,967 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 10:37:31,967 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 10:37:31,968 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 10:37:31,982 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:37:32,042 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:37:32,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:37:32 WrapperNode [2023-08-30 10:37:32,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:37:32,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:37:32,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:37:32,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:37:32,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:37:32" (1/1) ... [2023-08-30 10:37:32,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:37:32" (1/1) ... [2023-08-30 10:37:32,126 INFO L138 Inliner]: procedures = 279, calls = 51, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 244 [2023-08-30 10:37:32,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:37:32,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:37:32,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:37:32,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:37:32,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:37:32" (1/1) ... [2023-08-30 10:37:32,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:37:32" (1/1) ... [2023-08-30 10:37:32,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:37:32" (1/1) ... [2023-08-30 10:37:32,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:37:32" (1/1) ... [2023-08-30 10:37:32,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:37:32" (1/1) ... [2023-08-30 10:37:32,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:37:32" (1/1) ... [2023-08-30 10:37:32,180 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:37:32" (1/1) ... [2023-08-30 10:37:32,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:37:32" (1/1) ... [2023-08-30 10:37:32,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:37:32,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:37:32,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:37:32,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:37:32,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:37:32" (1/1) ... [2023-08-30 10:37:32,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:37:32,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:37:32,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 10:37:32,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 10:37:32,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:37:32,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 10:37:32,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:37:32,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:37:32,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:37:32,267 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 10:37:32,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 10:37:32,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:37:32,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 10:37:32,267 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 10:37:32,267 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 10:37:32,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:37:32,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:37:32,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:37:32,269 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 10:37:32,399 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:37:32,401 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:37:32,879 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:37:32,888 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:37:32,896 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-30 10:37:32,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:37:32 BoogieIcfgContainer [2023-08-30 10:37:32,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:37:32,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:37:32,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:37:32,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:37:32,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:37:31" (1/3) ... [2023-08-30 10:37:32,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6028dc6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:37:32, skipping insertion in model container [2023-08-30 10:37:32,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:37:32" (2/3) ... [2023-08-30 10:37:32,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6028dc6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:37:32, skipping insertion in model container [2023-08-30 10:37:32,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:37:32" (3/3) ... [2023-08-30 10:37:32,909 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_93-evilcollapse_racefree.i [2023-08-30 10:37:32,917 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:37:32,926 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:37:32,926 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-30 10:37:32,926 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:37:33,032 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 10:37:33,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 268 transitions, 544 flow [2023-08-30 10:37:33,157 INFO L130 PetriNetUnfolder]: 29/284 cut-off events. [2023-08-30 10:37:33,157 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-30 10:37:33,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 284 events. 29/284 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 684 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 150. Up to 4 conditions per place. [2023-08-30 10:37:33,163 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 268 transitions, 544 flow [2023-08-30 10:37:33,169 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 242 places, 265 transitions, 538 flow [2023-08-30 10:37:33,173 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:37:33,181 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 265 transitions, 538 flow [2023-08-30 10:37:33,184 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 265 transitions, 538 flow [2023-08-30 10:37:33,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 265 transitions, 538 flow [2023-08-30 10:37:33,233 INFO L130 PetriNetUnfolder]: 28/281 cut-off events. [2023-08-30 10:37:33,233 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-30 10:37:33,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 281 events. 28/281 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 671 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 150. Up to 4 conditions per place. [2023-08-30 10:37:33,240 INFO L119 LiptonReduction]: Number of co-enabled transitions 5096 [2023-08-30 10:37:55,744 WARN L222 SmtUtils]: Spent 12.40s on a formula simplification. DAG size of input: 187 DAG size of output: 185 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 10:38:01,937 WARN L222 SmtUtils]: Spent 6.19s 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 10:38:11,783 WARN L222 SmtUtils]: Spent 9.84s on a formula simplification. DAG size of input: 187 DAG size of output: 185 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 10:38:18,514 WARN L222 SmtUtils]: Spent 6.73s 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 10:38:32,709 WARN L222 SmtUtils]: Spent 14.19s on a formula simplification. DAG size of input: 192 DAG size of output: 190 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 10:38:39,097 WARN L222 SmtUtils]: Spent 6.38s on a formula simplification that was a NOOP. DAG size: 182 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 10:38:55,640 WARN L222 SmtUtils]: Spent 16.54s on a formula simplification. DAG size of input: 192 DAG size of output: 190 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 10:39:04,526 WARN L222 SmtUtils]: Spent 8.88s on a formula simplification that was a NOOP. DAG size: 182 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 10:39:11,662 WARN L222 SmtUtils]: Spent 7.08s on a formula simplification that was a NOOP. DAG size: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 10:39:19,556 WARN L222 SmtUtils]: Spent 7.89s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 10:39:28,679 INFO L134 LiptonReduction]: Checked pairs total: 5321 [2023-08-30 10:39:28,679 INFO L136 LiptonReduction]: Total number of compositions: 279 [2023-08-30 10:39:28,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:39:28,717 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;@3d6793fe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:39:28,717 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-30 10:39:28,725 INFO L130 PetriNetUnfolder]: 2/5 cut-off events. [2023-08-30 10:39:28,726 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:39:28,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:39:28,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 10:39:28,727 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:39:28,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:39:28,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1046495, now seen corresponding path program 1 times [2023-08-30 10:39:28,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:39:28,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983366812] [2023-08-30 10:39:28,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:39:28,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:39:28,880 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:39:28,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [698532739] [2023-08-30 10:39:28,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:39:28,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:39:28,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:39:28,889 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:39:28,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 10:39:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:39:29,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:39:29,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:39:29,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:39:29,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:39:29,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:39:29,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983366812] [2023-08-30 10:39:29,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:39:29,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698532739] [2023-08-30 10:39:29,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698532739] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:39:29,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:39:29,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:39:29,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603223810] [2023-08-30 10:39:29,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:39:29,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:39:29,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:39:29,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:39:29,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:39:29,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 547 [2023-08-30 10:39:29,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 52 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:29,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:39:29,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 547 [2023-08-30 10:39:29,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:39:29,412 INFO L130 PetriNetUnfolder]: 102/233 cut-off events. [2023-08-30 10:39:29,412 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:39:29,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 233 events. 102/233 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 871 event pairs, 80 based on Foata normal form. 12/135 useless extension candidates. Maximal degree in co-relation 404. Up to 209 conditions per place. [2023-08-30 10:39:29,415 INFO L137 encePairwiseOnDemand]: 528/547 looper letters, 38 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-08-30 10:39:29,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 45 transitions, 180 flow [2023-08-30 10:39:29,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:39:29,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:39:29,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 775 transitions. [2023-08-30 10:39:29,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47227300426569163 [2023-08-30 10:39:29,432 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 775 transitions. [2023-08-30 10:39:29,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 775 transitions. [2023-08-30 10:39:29,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:39:29,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 775 transitions. [2023-08-30 10:39:29,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:29,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:29,449 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:29,451 INFO L175 Difference]: Start difference. First operand has 41 places, 52 transitions, 112 flow. Second operand 3 states and 775 transitions. [2023-08-30 10:39:29,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 45 transitions, 180 flow [2023-08-30 10:39:29,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:39:29,456 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 120 flow [2023-08-30 10:39:29,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2023-08-30 10:39:29,460 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2023-08-30 10:39:29,461 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 120 flow [2023-08-30 10:39:29,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:29,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:39:29,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 10:39:29,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 10:39:29,667 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 10:39:29,667 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:39:29,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:39:29,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1046659, now seen corresponding path program 1 times [2023-08-30 10:39:29,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:39:29,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58529352] [2023-08-30 10:39:29,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:39:29,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:39:29,711 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:39:29,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1104554042] [2023-08-30 10:39:29,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:39:29,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:39:29,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:39:29,714 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:39:29,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 10:39:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:39:29,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:39:29,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:39:29,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:39:29,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:39:29,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:39:29,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58529352] [2023-08-30 10:39:29,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:39:29,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104554042] [2023-08-30 10:39:29,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104554042] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:39:29,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:39:29,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:39:29,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792332580] [2023-08-30 10:39:29,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:39:29,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:39:29,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:39:29,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:39:29,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:39:29,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 547 [2023-08-30 10:39:29,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:29,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:39:29,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 547 [2023-08-30 10:39:29,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:39:30,143 INFO L130 PetriNetUnfolder]: 101/231 cut-off events. [2023-08-30 10:39:30,144 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 10:39:30,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 231 events. 101/231 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 867 event pairs, 80 based on Foata normal form. 2/128 useless extension candidates. Maximal degree in co-relation 445. Up to 210 conditions per place. [2023-08-30 10:39:30,145 INFO L137 encePairwiseOnDemand]: 545/547 looper letters, 37 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-30 10:39:30,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 188 flow [2023-08-30 10:39:30,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:39:30,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:39:30,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 761 transitions. [2023-08-30 10:39:30,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46374162096282756 [2023-08-30 10:39:30,149 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 761 transitions. [2023-08-30 10:39:30,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 761 transitions. [2023-08-30 10:39:30,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:39:30,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 761 transitions. [2023-08-30 10:39:30,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:30,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:30,156 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:30,156 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 120 flow. Second operand 3 states and 761 transitions. [2023-08-30 10:39:30,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 188 flow [2023-08-30 10:39:30,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:39:30,158 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 113 flow [2023-08-30 10:39:30,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2023-08-30 10:39:30,159 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2023-08-30 10:39:30,159 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 113 flow [2023-08-30 10:39:30,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:30,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:39:30,160 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-08-30 10:39:30,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 10:39:30,366 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 10:39:30,366 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:39:30,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:39:30,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1005850871, now seen corresponding path program 1 times [2023-08-30 10:39:30,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:39:30,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869889461] [2023-08-30 10:39:30,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:39:30,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:39:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:39:30,555 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 10:39:30,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:39:30,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869889461] [2023-08-30 10:39:30,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869889461] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:39:30,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:39:30,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:39:30,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615705781] [2023-08-30 10:39:30,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:39:30,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:39:30,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:39:30,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:39:30,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:39:30,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 547 [2023-08-30 10:39:30,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:30,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:39:30,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 547 [2023-08-30 10:39:30,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:39:30,744 INFO L130 PetriNetUnfolder]: 101/233 cut-off events. [2023-08-30 10:39:30,744 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:39:30,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 233 events. 101/233 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 868 event pairs, 80 based on Foata normal form. 2/130 useless extension candidates. Maximal degree in co-relation 455. Up to 212 conditions per place. [2023-08-30 10:39:30,752 INFO L137 encePairwiseOnDemand]: 540/547 looper letters, 36 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2023-08-30 10:39:30,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 193 flow [2023-08-30 10:39:30,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:39:30,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:39:30,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 759 transitions. [2023-08-30 10:39:30,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625228519195612 [2023-08-30 10:39:30,756 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 759 transitions. [2023-08-30 10:39:30,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 759 transitions. [2023-08-30 10:39:30,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:39:30,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 759 transitions. [2023-08-30 10:39:30,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:30,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:30,762 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:30,762 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 113 flow. Second operand 3 states and 759 transitions. [2023-08-30 10:39:30,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 193 flow [2023-08-30 10:39:30,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 193 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:39:30,764 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 138 flow [2023-08-30 10:39:30,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-08-30 10:39:30,765 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2023-08-30 10:39:30,765 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 138 flow [2023-08-30 10:39:30,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:30,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:39:30,766 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-08-30 10:39:30,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 10:39:30,766 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:39:30,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:39:30,767 INFO L85 PathProgramCache]: Analyzing trace with hash 278636347, now seen corresponding path program 1 times [2023-08-30 10:39:30,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:39:30,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329843953] [2023-08-30 10:39:30,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:39:30,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:39:30,801 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:39:30,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897438135] [2023-08-30 10:39:30,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:39:30,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:39:30,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:39:30,803 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:39:30,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 10:39:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:39:31,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:39:31,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:39:31,079 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:39:31,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:39:31,094 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:39:31,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:39:31,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329843953] [2023-08-30 10:39:31,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:39:31,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897438135] [2023-08-30 10:39:31,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897438135] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:39:31,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 10:39:31,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-30 10:39:31,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605045045] [2023-08-30 10:39:31,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 10:39:31,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:39:31,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:39:31,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:39:31,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:39:31,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 547 [2023-08-30 10:39:31,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 241.66666666666666) internal successors, (1450), 6 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:31,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:39:31,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 547 [2023-08-30 10:39:31,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:39:31,465 INFO L130 PetriNetUnfolder]: 103/245 cut-off events. [2023-08-30 10:39:31,465 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 10:39:31,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 245 events. 103/245 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 927 event pairs, 80 based on Foata normal form. 3/140 useless extension candidates. Maximal degree in co-relation 510. Up to 210 conditions per place. [2023-08-30 10:39:31,467 INFO L137 encePairwiseOnDemand]: 540/547 looper letters, 40 selfloop transitions, 8 changer transitions 0/52 dead transitions. [2023-08-30 10:39:31,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 52 transitions, 282 flow [2023-08-30 10:39:31,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:39:31,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:39:31,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1495 transitions. [2023-08-30 10:39:31,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45551492992078 [2023-08-30 10:39:31,472 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1495 transitions. [2023-08-30 10:39:31,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1495 transitions. [2023-08-30 10:39:31,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:39:31,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1495 transitions. [2023-08-30 10:39:31,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 249.16666666666666) internal successors, (1495), 6 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:31,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 547.0) internal successors, (3829), 7 states have internal predecessors, (3829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:31,482 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 547.0) internal successors, (3829), 7 states have internal predecessors, (3829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:31,483 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 138 flow. Second operand 6 states and 1495 transitions. [2023-08-30 10:39:31,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 52 transitions, 282 flow [2023-08-30 10:39:31,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 277 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 10:39:31,485 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 216 flow [2023-08-30 10:39:31,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-08-30 10:39:31,486 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2023-08-30 10:39:31,486 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 216 flow [2023-08-30 10:39:31,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 241.66666666666666) internal successors, (1450), 6 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:31,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:39:31,488 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-08-30 10:39:31,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 10:39:31,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:39:31,693 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:39:31,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:39:31,694 INFO L85 PathProgramCache]: Analyzing trace with hash 515966444, now seen corresponding path program 1 times [2023-08-30 10:39:31,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:39:31,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045893808] [2023-08-30 10:39:31,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:39:31,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:39:31,778 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:39:31,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [217009168] [2023-08-30 10:39:31,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:39:31,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:39:31,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:39:31,787 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:39:31,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 10:39:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:39:32,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:39:32,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:39:32,205 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 10:39:32,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:39:32,259 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 10:39:32,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:39:32,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045893808] [2023-08-30 10:39:32,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:39:32,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217009168] [2023-08-30 10:39:32,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217009168] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:39:32,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 10:39:32,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-30 10:39:32,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275158549] [2023-08-30 10:39:32,261 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 10:39:32,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 10:39:32,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:39:32,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 10:39:32,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 10:39:32,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 547 [2023-08-30 10:39:32,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 216 flow. Second operand has 12 states, 12 states have (on average 241.33333333333334) internal successors, (2896), 12 states have internal predecessors, (2896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:32,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:39:32,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 547 [2023-08-30 10:39:32,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:39:33,457 INFO L130 PetriNetUnfolder]: 103/269 cut-off events. [2023-08-30 10:39:33,457 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 10:39:33,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 686 conditions, 269 events. 103/269 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1103 event pairs, 80 based on Foata normal form. 12/168 useless extension candidates. Maximal degree in co-relation 666. Up to 210 conditions per place. [2023-08-30 10:39:33,459 INFO L137 encePairwiseOnDemand]: 540/547 looper letters, 52 selfloop transitions, 14 changer transitions 0/70 dead transitions. [2023-08-30 10:39:33,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 70 transitions, 536 flow [2023-08-30 10:39:33,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:39:33,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:39:33,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2962 transitions. [2023-08-30 10:39:33,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.451249238269348 [2023-08-30 10:39:33,468 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2962 transitions. [2023-08-30 10:39:33,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2962 transitions. [2023-08-30 10:39:33,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:39:33,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2962 transitions. [2023-08-30 10:39:33,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 246.83333333333334) internal successors, (2962), 12 states have internal predecessors, (2962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:33,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 547.0) internal successors, (7111), 13 states have internal predecessors, (7111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:33,487 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 547.0) internal successors, (7111), 13 states have internal predecessors, (7111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:33,488 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 216 flow. Second operand 12 states and 2962 transitions. [2023-08-30 10:39:33,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 70 transitions, 536 flow [2023-08-30 10:39:33,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 70 transitions, 533 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:39:33,492 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 370 flow [2023-08-30 10:39:33,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=370, PETRI_PLACES=71, PETRI_TRANSITIONS=56} [2023-08-30 10:39:33,493 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 30 predicate places. [2023-08-30 10:39:33,493 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 370 flow [2023-08-30 10:39:33,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 241.33333333333334) internal successors, (2896), 12 states have internal predecessors, (2896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:33,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:39:33,495 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 2, 1, 1, 1] [2023-08-30 10:39:33,507 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 10:39:33,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:39:33,706 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:39:33,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:39:33,707 INFO L85 PathProgramCache]: Analyzing trace with hash -745801780, now seen corresponding path program 2 times [2023-08-30 10:39:33,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:39:33,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601125548] [2023-08-30 10:39:33,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:39:33,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:39:33,821 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:39:33,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [236876866] [2023-08-30 10:39:33,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:39:33,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:39:33,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:39:33,823 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:39:33,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 10:39:34,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:39:34,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:39:34,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 2708 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 10:39:34,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:39:34,646 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 10:39:34,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:39:34,833 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 10:39:34,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:39:34,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601125548] [2023-08-30 10:39:34,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:39:34,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236876866] [2023-08-30 10:39:34,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236876866] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:39:34,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 10:39:34,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-30 10:39:34,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429472151] [2023-08-30 10:39:34,834 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 10:39:34,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 10:39:34,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:39:34,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 10:39:34,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-30 10:39:35,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 547 [2023-08-30 10:39:35,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 56 transitions, 370 flow. Second operand has 24 states, 24 states have (on average 241.16666666666666) internal successors, (5788), 24 states have internal predecessors, (5788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:35,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:39:35,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 547 [2023-08-30 10:39:35,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:39:37,082 INFO L130 PetriNetUnfolder]: 103/317 cut-off events. [2023-08-30 10:39:37,082 INFO L131 PetriNetUnfolder]: For 1224/1224 co-relation queries the response was YES. [2023-08-30 10:39:37,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1081 conditions, 317 events. 103/317 cut-off events. For 1224/1224 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1250 event pairs, 80 based on Foata normal form. 24/216 useless extension candidates. Maximal degree in co-relation 1053. Up to 210 conditions per place. [2023-08-30 10:39:37,084 INFO L137 encePairwiseOnDemand]: 540/547 looper letters, 76 selfloop transitions, 26 changer transitions 0/106 dead transitions. [2023-08-30 10:39:37,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 106 transitions, 1158 flow [2023-08-30 10:39:37,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 10:39:37,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 10:39:37,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5896 transitions. [2023-08-30 10:39:37,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44911639244363194 [2023-08-30 10:39:37,100 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5896 transitions. [2023-08-30 10:39:37,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5896 transitions. [2023-08-30 10:39:37,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:39:37,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5896 transitions. [2023-08-30 10:39:37,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 245.66666666666666) internal successors, (5896), 24 states have internal predecessors, (5896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:37,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 547.0) internal successors, (13675), 25 states have internal predecessors, (13675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:37,140 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 547.0) internal successors, (13675), 25 states have internal predecessors, (13675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:37,141 INFO L175 Difference]: Start difference. First operand has 71 places, 56 transitions, 370 flow. Second operand 24 states and 5896 transitions. [2023-08-30 10:39:37,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 106 transitions, 1158 flow [2023-08-30 10:39:37,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 106 transitions, 1085 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-08-30 10:39:37,148 INFO L231 Difference]: Finished difference. Result has 103 places, 70 transitions, 638 flow [2023-08-30 10:39:37,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=638, PETRI_PLACES=103, PETRI_TRANSITIONS=70} [2023-08-30 10:39:37,149 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 62 predicate places. [2023-08-30 10:39:37,150 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 70 transitions, 638 flow [2023-08-30 10:39:37,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 241.16666666666666) internal successors, (5788), 24 states have internal predecessors, (5788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:37,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:39:37,152 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 2, 1, 1, 1] [2023-08-30 10:39:37,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 10:39:37,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:39:37,363 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:39:37,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:39:37,363 INFO L85 PathProgramCache]: Analyzing trace with hash 832643980, now seen corresponding path program 3 times [2023-08-30 10:39:37,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:39:37,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097074330] [2023-08-30 10:39:37,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:39:37,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:39:37,730 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:39:37,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [636144374] [2023-08-30 10:39:37,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 10:39:37,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:39:37,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:39:37,737 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:39:37,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 10:39:38,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 10:39:38,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:39:38,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:39:38,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:39:38,739 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-08-30 10:39:38,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:39:38,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:39:38,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097074330] [2023-08-30 10:39:38,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:39:38,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636144374] [2023-08-30 10:39:38,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636144374] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:39:38,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:39:38,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:39:38,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925858589] [2023-08-30 10:39:38,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:39:38,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:39:38,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:39:38,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:39:38,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:39:38,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 547 [2023-08-30 10:39:38,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 70 transitions, 638 flow. Second operand has 6 states, 6 states have (on average 237.16666666666666) internal successors, (1423), 6 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:38,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:39:38,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 547 [2023-08-30 10:39:38,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:39:39,364 INFO L130 PetriNetUnfolder]: 102/294 cut-off events. [2023-08-30 10:39:39,364 INFO L131 PetriNetUnfolder]: For 583/583 co-relation queries the response was YES. [2023-08-30 10:39:39,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 991 conditions, 294 events. 102/294 cut-off events. For 583/583 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1051 event pairs, 80 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 949. Up to 248 conditions per place. [2023-08-30 10:39:39,367 INFO L137 encePairwiseOnDemand]: 541/547 looper letters, 80 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2023-08-30 10:39:39,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 88 transitions, 946 flow [2023-08-30 10:39:39,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:39:39,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:39:39,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1220 transitions. [2023-08-30 10:39:39,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460694698354662 [2023-08-30 10:39:39,378 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1220 transitions. [2023-08-30 10:39:39,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1220 transitions. [2023-08-30 10:39:39,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:39:39,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1220 transitions. [2023-08-30 10:39:39,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:39,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 547.0) internal successors, (3282), 6 states have internal predecessors, (3282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:39,386 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 547.0) internal successors, (3282), 6 states have internal predecessors, (3282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:39,386 INFO L175 Difference]: Start difference. First operand has 103 places, 70 transitions, 638 flow. Second operand 5 states and 1220 transitions. [2023-08-30 10:39:39,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 88 transitions, 946 flow [2023-08-30 10:39:39,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 88 transitions, 900 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-08-30 10:39:39,397 INFO L231 Difference]: Finished difference. Result has 96 places, 66 transitions, 530 flow [2023-08-30 10:39:39,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=530, PETRI_PLACES=96, PETRI_TRANSITIONS=66} [2023-08-30 10:39:39,399 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 55 predicate places. [2023-08-30 10:39:39,399 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 66 transitions, 530 flow [2023-08-30 10:39:39,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 237.16666666666666) internal successors, (1423), 6 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:39,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:39:39,400 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 2, 1, 1, 1] [2023-08-30 10:39:39,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 10:39:39,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:39:39,609 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:39:39,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:39:39,609 INFO L85 PathProgramCache]: Analyzing trace with hash 832644021, now seen corresponding path program 1 times [2023-08-30 10:39:39,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:39:39,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142643165] [2023-08-30 10:39:39,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:39:39,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:39:39,854 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:39:39,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [261797832] [2023-08-30 10:39:39,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:39:39,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:39:39,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:39:39,856 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 10:39:39,859 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 10:39:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:39:41,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 5516 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 10:39:41,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:39:41,753 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:39:41,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:39:42,121 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:39:42,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:39:42,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142643165] [2023-08-30 10:39:42,122 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:39:42,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261797832] [2023-08-30 10:39:42,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261797832] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:39:42,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 10:39:42,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2023-08-30 10:39:42,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86854402] [2023-08-30 10:39:42,123 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 10:39:42,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 10:39:42,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:39:42,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 10:39:42,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-08-30 10:39:42,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 547 [2023-08-30 10:39:42,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 66 transitions, 530 flow. Second operand has 32 states, 32 states have (on average 241.15625) internal successors, (7717), 32 states have internal predecessors, (7717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:42,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:39:42,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 547 [2023-08-30 10:39:42,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:39:44,402 INFO L130 PetriNetUnfolder]: 102/318 cut-off events. [2023-08-30 10:39:44,402 INFO L131 PetriNetUnfolder]: For 4601/4601 co-relation queries the response was YES. [2023-08-30 10:39:44,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1092 conditions, 318 events. 102/318 cut-off events. For 4601/4601 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1104 event pairs, 80 based on Foata normal form. 16/232 useless extension candidates. Maximal degree in co-relation 1048. Up to 209 conditions per place. [2023-08-30 10:39:44,404 INFO L137 encePairwiseOnDemand]: 542/547 looper letters, 62 selfloop transitions, 34 changer transitions 0/100 dead transitions. [2023-08-30 10:39:44,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 100 transitions, 1123 flow [2023-08-30 10:39:44,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 10:39:44,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 10:39:44,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 7789 transitions. [2023-08-30 10:39:44,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44498400365630714 [2023-08-30 10:39:44,422 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 7789 transitions. [2023-08-30 10:39:44,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 7789 transitions. [2023-08-30 10:39:44,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:39:44,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 7789 transitions. [2023-08-30 10:39:44,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 243.40625) internal successors, (7789), 32 states have internal predecessors, (7789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:44,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 547.0) internal successors, (18051), 33 states have internal predecessors, (18051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:44,468 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 547.0) internal successors, (18051), 33 states have internal predecessors, (18051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:44,468 INFO L175 Difference]: Start difference. First operand has 96 places, 66 transitions, 530 flow. Second operand 32 states and 7789 transitions. [2023-08-30 10:39:44,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 100 transitions, 1123 flow [2023-08-30 10:39:44,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 100 transitions, 1117 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 10:39:44,479 INFO L231 Difference]: Finished difference. Result has 133 places, 75 transitions, 729 flow [2023-08-30 10:39:44,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=729, PETRI_PLACES=133, PETRI_TRANSITIONS=75} [2023-08-30 10:39:44,480 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 92 predicate places. [2023-08-30 10:39:44,480 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 75 transitions, 729 flow [2023-08-30 10:39:44,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 241.15625) internal successors, (7717), 32 states have internal predecessors, (7717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:44,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:39:44,483 INFO L208 CegarLoopForPetriNet]: trace histogram [31, 2, 1, 1, 1] [2023-08-30 10:39:44,503 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 10:39:44,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:39:44,697 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:39:44,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:39:44,698 INFO L85 PathProgramCache]: Analyzing trace with hash -345278923, now seen corresponding path program 2 times [2023-08-30 10:39:44,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:39:44,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033116167] [2023-08-30 10:39:44,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:39:44,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:39:44,991 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:39:44,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [630339990] [2023-08-30 10:39:44,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:39:44,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:39:44,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:39:44,993 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 10:39:45,018 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 10:39:56,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:39:56,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:39:56,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 7388 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 10:39:56,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:39:56,876 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-08-30 10:39:56,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:39:57,045 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-08-30 10:39:57,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:39:57,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033116167] [2023-08-30 10:39:57,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:39:57,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630339990] [2023-08-30 10:39:57,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630339990] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:39:57,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 10:39:57,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-08-30 10:39:57,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520947519] [2023-08-30 10:39:57,046 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 10:39:57,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 10:39:57,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:39:57,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 10:39:57,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-08-30 10:39:57,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 547 [2023-08-30 10:39:57,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 75 transitions, 729 flow. Second operand has 10 states, 10 states have (on average 234.4) internal successors, (2344), 10 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:57,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:39:57,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 547 [2023-08-30 10:39:57,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:39:59,698 INFO L130 PetriNetUnfolder]: 201/570 cut-off events. [2023-08-30 10:39:59,698 INFO L131 PetriNetUnfolder]: For 1900/1900 co-relation queries the response was YES. [2023-08-30 10:39:59,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1857 conditions, 570 events. 201/570 cut-off events. For 1900/1900 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1932 event pairs, 160 based on Foata normal form. 32/400 useless extension candidates. Maximal degree in co-relation 1805. Up to 260 conditions per place. [2023-08-30 10:39:59,702 INFO L137 encePairwiseOnDemand]: 540/547 looper letters, 151 selfloop transitions, 11 changer transitions 0/166 dead transitions. [2023-08-30 10:39:59,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 166 transitions, 1836 flow [2023-08-30 10:39:59,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 10:39:59,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 10:39:59,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2641 transitions. [2023-08-30 10:39:59,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4389230513544956 [2023-08-30 10:39:59,709 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2641 transitions. [2023-08-30 10:39:59,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2641 transitions. [2023-08-30 10:39:59,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:39:59,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2641 transitions. [2023-08-30 10:39:59,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 240.0909090909091) internal successors, (2641), 11 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:59,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 547.0) internal successors, (6564), 12 states have internal predecessors, (6564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:59,722 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 547.0) internal successors, (6564), 12 states have internal predecessors, (6564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:59,723 INFO L175 Difference]: Start difference. First operand has 133 places, 75 transitions, 729 flow. Second operand 11 states and 2641 transitions. [2023-08-30 10:39:59,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 166 transitions, 1836 flow [2023-08-30 10:39:59,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 166 transitions, 1683 flow, removed 9 selfloop flow, removed 22 redundant places. [2023-08-30 10:39:59,741 INFO L231 Difference]: Finished difference. Result has 124 places, 80 transitions, 767 flow [2023-08-30 10:39:59,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=767, PETRI_PLACES=124, PETRI_TRANSITIONS=80} [2023-08-30 10:39:59,742 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 83 predicate places. [2023-08-30 10:39:59,742 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 80 transitions, 767 flow [2023-08-30 10:39:59,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 234.4) internal successors, (2344), 10 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:59,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:39:59,743 INFO L208 CegarLoopForPetriNet]: trace histogram [62, 3, 2, 1, 1] [2023-08-30 10:39:59,803 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 10:39:59,943 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,SelfDestructingSolverStorable8 [2023-08-30 10:39:59,944 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:39:59,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:39:59,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1999051588, now seen corresponding path program 3 times [2023-08-30 10:39:59,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:39:59,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616395807] [2023-08-30 10:39:59,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:39:59,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:40:00,552 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:40:00,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1648512821] [2023-08-30 10:40:00,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 10:40:00,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:40:00,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:40:00,554 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 10:40:00,576 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 10:40:02,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 10:40:02,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:40:02,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:40:02,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:40:02,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2083 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 1894 trivial. 0 not checked. [2023-08-30 10:40:02,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:40:02,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:40:02,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616395807] [2023-08-30 10:40:02,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:40:02,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648512821] [2023-08-30 10:40:02,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648512821] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:40:02,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:40:02,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:40:02,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663390298] [2023-08-30 10:40:02,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:40:02,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:40:02,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:40:02,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:40:02,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:40:02,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 547 [2023-08-30 10:40:02,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 80 transitions, 767 flow. Second operand has 5 states, 5 states have (on average 238.6) internal successors, (1193), 5 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:02,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:40:02,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 547 [2023-08-30 10:40:02,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:40:03,231 INFO L130 PetriNetUnfolder]: 200/541 cut-off events. [2023-08-30 10:40:03,232 INFO L131 PetriNetUnfolder]: For 1876/1876 co-relation queries the response was YES. [2023-08-30 10:40:03,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1592 conditions, 541 events. 200/541 cut-off events. For 1876/1876 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1796 event pairs, 160 based on Foata normal form. 29/368 useless extension candidates. Maximal degree in co-relation 1535. Up to 405 conditions per place. [2023-08-30 10:40:03,235 INFO L137 encePairwiseOnDemand]: 543/547 looper letters, 58 selfloop transitions, 13 changer transitions 0/75 dead transitions. [2023-08-30 10:40:03,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 75 transitions, 826 flow [2023-08-30 10:40:03,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:40:03,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:40:03,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1220 transitions. [2023-08-30 10:40:03,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460694698354662 [2023-08-30 10:40:03,239 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1220 transitions. [2023-08-30 10:40:03,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1220 transitions. [2023-08-30 10:40:03,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:40:03,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1220 transitions. [2023-08-30 10:40:03,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:03,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 547.0) internal successors, (3282), 6 states have internal predecessors, (3282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:03,245 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 547.0) internal successors, (3282), 6 states have internal predecessors, (3282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:03,245 INFO L175 Difference]: Start difference. First operand has 124 places, 80 transitions, 767 flow. Second operand 5 states and 1220 transitions. [2023-08-30 10:40:03,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 75 transitions, 826 flow [2023-08-30 10:40:03,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 75 transitions, 601 flow, removed 85 selfloop flow, removed 14 redundant places. [2023-08-30 10:40:03,259 INFO L231 Difference]: Finished difference. Result has 113 places, 75 transitions, 485 flow [2023-08-30 10:40:03,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=485, PETRI_PLACES=113, PETRI_TRANSITIONS=75} [2023-08-30 10:40:03,259 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 72 predicate places. [2023-08-30 10:40:03,260 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 75 transitions, 485 flow [2023-08-30 10:40:03,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 238.6) internal successors, (1193), 5 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:03,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:40:03,260 INFO L208 CegarLoopForPetriNet]: trace histogram [60, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:40:03,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-30 10:40:03,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 10:40:03,478 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:40:03,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:40:03,479 INFO L85 PathProgramCache]: Analyzing trace with hash 2000132792, now seen corresponding path program 1 times [2023-08-30 10:40:03,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:40:03,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831269801] [2023-08-30 10:40:03,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:03,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:40:04,036 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:40:04,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281634848] [2023-08-30 10:40:04,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:04,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:40:04,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:40:04,041 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 10:40:04,055 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 10:40:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:40:08,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 14208 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:40:08,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:40:08,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2023-08-30 10:40:08,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:40:08,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2023-08-30 10:40:08,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:40:08,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831269801] [2023-08-30 10:40:08,708 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:40:08,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281634848] [2023-08-30 10:40:08,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281634848] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:40:08,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 10:40:08,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-08-30 10:40:08,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106455744] [2023-08-30 10:40:08,709 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 10:40:08,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:40:08,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:40:08,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:40:08,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:40:08,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 547 [2023-08-30 10:40:08,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 75 transitions, 485 flow. Second operand has 8 states, 8 states have (on average 242.375) internal successors, (1939), 8 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:08,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:40:08,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 547 [2023-08-30 10:40:08,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:40:09,516 INFO L130 PetriNetUnfolder]: 105/420 cut-off events. [2023-08-30 10:40:09,516 INFO L131 PetriNetUnfolder]: For 2999/2999 co-relation queries the response was YES. [2023-08-30 10:40:09,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 420 events. 105/420 cut-off events. For 2999/2999 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 853 event pairs, 80 based on Foata normal form. 4/323 useless extension candidates. Maximal degree in co-relation 1255. Up to 202 conditions per place. [2023-08-30 10:40:09,519 INFO L137 encePairwiseOnDemand]: 543/547 looper letters, 220 selfloop transitions, 8 changer transitions 0/232 dead transitions. [2023-08-30 10:40:09,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 232 transitions, 1805 flow [2023-08-30 10:40:09,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 10:40:09,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 10:40:09,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1972 transitions. [2023-08-30 10:40:09,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506398537477148 [2023-08-30 10:40:09,521 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1972 transitions. [2023-08-30 10:40:09,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1972 transitions. [2023-08-30 10:40:09,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:40:09,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1972 transitions. [2023-08-30 10:40:09,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 246.5) internal successors, (1972), 8 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:09,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 547.0) internal successors, (4923), 9 states have internal predecessors, (4923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:09,527 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 547.0) internal successors, (4923), 9 states have internal predecessors, (4923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:09,527 INFO L175 Difference]: Start difference. First operand has 113 places, 75 transitions, 485 flow. Second operand 8 states and 1972 transitions. [2023-08-30 10:40:09,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 232 transitions, 1805 flow [2023-08-30 10:40:09,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 232 transitions, 1745 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-30 10:40:09,538 INFO L231 Difference]: Finished difference. Result has 121 places, 79 transitions, 690 flow [2023-08-30 10:40:09,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=690, PETRI_PLACES=121, PETRI_TRANSITIONS=79} [2023-08-30 10:40:09,539 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 80 predicate places. [2023-08-30 10:40:09,539 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 79 transitions, 690 flow [2023-08-30 10:40:09,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.375) internal successors, (1939), 8 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:09,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:40:09,540 INFO L208 CegarLoopForPetriNet]: trace histogram [180, 6, 6, 1, 1, 1, 1, 1] [2023-08-30 10:40:09,592 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 10:40:09,753 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,SelfDestructingSolverStorable10 [2023-08-30 10:40:09,753 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:40:09,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:40:09,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1008093809, now seen corresponding path program 1 times [2023-08-30 10:40:09,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:40:09,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804410310] [2023-08-30 10:40:09,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:09,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:40:11,411 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:40:11,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [708363149] [2023-08-30 10:40:11,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:11,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:40:11,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:40:11,421 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 10:40:11,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 10:40:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:40:22,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 42448 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 10:40:22,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:40:22,976 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 14436 refuted. 0 times theorem prover too weak. 2790 trivial. 0 not checked. [2023-08-30 10:40:22,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:40:23,330 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 14436 refuted. 0 times theorem prover too weak. 2790 trivial. 0 not checked. [2023-08-30 10:40:23,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:40:23,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804410310] [2023-08-30 10:40:23,331 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:40:23,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708363149] [2023-08-30 10:40:23,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708363149] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:40:23,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 10:40:23,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-08-30 10:40:23,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452489864] [2023-08-30 10:40:23,332 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 10:40:23,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 10:40:23,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:40:23,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 10:40:23,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 10:40:23,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 547 [2023-08-30 10:40:23,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 79 transitions, 690 flow. Second operand has 12 states, 12 states have (on average 242.83333333333334) internal successors, (2914), 12 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:23,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:40:23,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 547 [2023-08-30 10:40:23,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:40:24,431 INFO L130 PetriNetUnfolder]: 109/552 cut-off events. [2023-08-30 10:40:24,432 INFO L131 PetriNetUnfolder]: For 5361/5361 co-relation queries the response was YES. [2023-08-30 10:40:24,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1844 conditions, 552 events. 109/552 cut-off events. For 5361/5361 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 857 event pairs, 80 based on Foata normal form. 4/455 useless extension candidates. Maximal degree in co-relation 1793. Up to 202 conditions per place. [2023-08-30 10:40:24,435 INFO L137 encePairwiseOnDemand]: 543/547 looper letters, 348 selfloop transitions, 12 changer transitions 0/364 dead transitions. [2023-08-30 10:40:24,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 364 transitions, 2883 flow [2023-08-30 10:40:24,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:40:24,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:40:24,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2944 transitions. [2023-08-30 10:40:24,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44850700792199877 [2023-08-30 10:40:24,439 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2944 transitions. [2023-08-30 10:40:24,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2944 transitions. [2023-08-30 10:40:24,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:40:24,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2944 transitions. [2023-08-30 10:40:24,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 245.33333333333334) internal successors, (2944), 12 states have internal predecessors, (2944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:24,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 547.0) internal successors, (7111), 13 states have internal predecessors, (7111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:24,448 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 547.0) internal successors, (7111), 13 states have internal predecessors, (7111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:24,448 INFO L175 Difference]: Start difference. First operand has 121 places, 79 transitions, 690 flow. Second operand 12 states and 2944 transitions. [2023-08-30 10:40:24,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 364 transitions, 2883 flow [2023-08-30 10:40:24,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 364 transitions, 2879 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:40:24,463 INFO L231 Difference]: Finished difference. Result has 135 places, 84 transitions, 1012 flow [2023-08-30 10:40:24,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1012, PETRI_PLACES=135, PETRI_TRANSITIONS=84} [2023-08-30 10:40:24,465 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 94 predicate places. [2023-08-30 10:40:24,465 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 84 transitions, 1012 flow [2023-08-30 10:40:24,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 242.83333333333334) internal successors, (2914), 12 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:24,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:40:24,466 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1] [2023-08-30 10:40:24,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 10:40:24,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-30 10:40:24,680 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:40:24,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:40:24,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1480686121, now seen corresponding path program 2 times [2023-08-30 10:40:24,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:40:24,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921550090] [2023-08-30 10:40:24,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:24,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:40:27,327 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:40:27,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [365824493] [2023-08-30 10:40:27,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:40:27,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:40:27,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:40:27,329 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:40:27,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 10:40:37,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:40:37,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:40:37,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:40:37,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:40:37,284 INFO L134 CoverageAnalysis]: Checked inductivity of 47950 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47950 trivial. 0 not checked. [2023-08-30 10:40:37,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:40:37,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:40:37,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921550090] [2023-08-30 10:40:37,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:40:37,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365824493] [2023-08-30 10:40:37,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365824493] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:40:37,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:40:37,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:40:37,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420632016] [2023-08-30 10:40:37,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:40:37,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:40:37,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:40:37,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:40:37,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:40:37,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 547 [2023-08-30 10:40:37,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 84 transitions, 1012 flow. Second operand has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:37,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:40:37,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 547 [2023-08-30 10:40:37,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:40:37,896 INFO L130 PetriNetUnfolder]: 88/507 cut-off events. [2023-08-30 10:40:37,896 INFO L131 PetriNetUnfolder]: For 5781/5781 co-relation queries the response was YES. [2023-08-30 10:40:37,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1792 conditions, 507 events. 88/507 cut-off events. For 5781/5781 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 707 event pairs, 32 based on Foata normal form. 0/432 useless extension candidates. Maximal degree in co-relation 1735. Up to 406 conditions per place. [2023-08-30 10:40:37,899 INFO L137 encePairwiseOnDemand]: 542/547 looper letters, 95 selfloop transitions, 3 changer transitions 0/102 dead transitions. [2023-08-30 10:40:37,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 102 transitions, 1244 flow [2023-08-30 10:40:37,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:40:37,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:40:37,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 772 transitions. [2023-08-30 10:40:37,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4704448507007922 [2023-08-30 10:40:37,900 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 772 transitions. [2023-08-30 10:40:37,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 772 transitions. [2023-08-30 10:40:37,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:40:37,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 772 transitions. [2023-08-30 10:40:37,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:37,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:37,902 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:37,902 INFO L175 Difference]: Start difference. First operand has 135 places, 84 transitions, 1012 flow. Second operand 3 states and 772 transitions. [2023-08-30 10:40:37,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 102 transitions, 1244 flow [2023-08-30 10:40:37,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 102 transitions, 1234 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 10:40:37,918 INFO L231 Difference]: Finished difference. Result has 133 places, 84 transitions, 1018 flow [2023-08-30 10:40:37,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1018, PETRI_PLACES=133, PETRI_TRANSITIONS=84} [2023-08-30 10:40:37,919 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 92 predicate places. [2023-08-30 10:40:37,919 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 84 transitions, 1018 flow [2023-08-30 10:40:37,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:37,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:40:37,920 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1] [2023-08-30 10:40:37,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 10:40:38,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-30 10:40:38,145 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:40:38,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:40:38,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1480686120, now seen corresponding path program 2 times [2023-08-30 10:40:38,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:40:38,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028069469] [2023-08-30 10:40:38,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:38,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:40:40,885 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:40:40,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1139297815] [2023-08-30 10:40:40,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:40:40,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:40:40,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:40:40,887 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:40:40,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 10:40:53,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:40:53,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:40:53,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:40:53,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:40:53,643 INFO L134 CoverageAnalysis]: Checked inductivity of 47950 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47950 trivial. 0 not checked. [2023-08-30 10:40:53,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:40:53,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:40:53,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028069469] [2023-08-30 10:40:53,644 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:40:53,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139297815] [2023-08-30 10:40:53,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139297815] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:40:53,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:40:53,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:40:53,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198757591] [2023-08-30 10:40:53,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:40:53,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:40:53,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:40:53,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:40:53,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:40:53,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 547 [2023-08-30 10:40:53,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 84 transitions, 1018 flow. Second operand has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:53,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:40:53,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 547 [2023-08-30 10:40:53,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:40:54,203 INFO L130 PetriNetUnfolder]: 68/481 cut-off events. [2023-08-30 10:40:54,204 INFO L131 PetriNetUnfolder]: For 5684/5684 co-relation queries the response was YES. [2023-08-30 10:40:54,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1831 conditions, 481 events. 68/481 cut-off events. For 5684/5684 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 681 event pairs, 0 based on Foata normal form. 17/465 useless extension candidates. Maximal degree in co-relation 1773. Up to 441 conditions per place. [2023-08-30 10:40:54,207 INFO L137 encePairwiseOnDemand]: 544/547 looper letters, 95 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2023-08-30 10:40:54,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 101 transitions, 1246 flow [2023-08-30 10:40:54,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:40:54,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:40:54,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 773 transitions. [2023-08-30 10:40:54,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47105423522242534 [2023-08-30 10:40:54,209 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 773 transitions. [2023-08-30 10:40:54,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 773 transitions. [2023-08-30 10:40:54,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:40:54,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 773 transitions. [2023-08-30 10:40:54,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:54,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:54,212 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:54,212 INFO L175 Difference]: Start difference. First operand has 133 places, 84 transitions, 1018 flow. Second operand 3 states and 773 transitions. [2023-08-30 10:40:54,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 101 transitions, 1246 flow [2023-08-30 10:40:54,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 101 transitions, 1240 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:40:54,227 INFO L231 Difference]: Finished difference. Result has 132 places, 83 transitions, 1014 flow [2023-08-30 10:40:54,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1014, PETRI_PLACES=132, PETRI_TRANSITIONS=83} [2023-08-30 10:40:54,227 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 91 predicate places. [2023-08-30 10:40:54,228 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 83 transitions, 1014 flow [2023-08-30 10:40:54,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:54,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:40:54,228 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:40:54,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-30 10:40:54,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 10:40:54,429 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:40:54,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:40:54,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1305254831, now seen corresponding path program 1 times [2023-08-30 10:40:54,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:40:54,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486055834] [2023-08-30 10:40:54,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:54,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:40:57,136 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:40:57,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [224624745] [2023-08-30 10:40:57,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:57,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:40:57,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:40:57,147 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:40:57,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 10:41:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:41:22,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 70721 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:41:22,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:41:22,080 INFO L134 CoverageAnalysis]: Checked inductivity of 47950 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47950 trivial. 0 not checked. [2023-08-30 10:41:22,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:41:22,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:41:22,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486055834] [2023-08-30 10:41:22,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:41:22,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224624745] [2023-08-30 10:41:22,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224624745] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:41:22,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:41:22,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:41:22,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761811501] [2023-08-30 10:41:22,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:41:22,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:41:22,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:41:22,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:41:22,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:41:22,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 547 [2023-08-30 10:41:22,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 83 transitions, 1014 flow. Second operand has 3 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:22,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:41:22,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 547 [2023-08-30 10:41:22,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:41:22,726 INFO L130 PetriNetUnfolder]: 68/469 cut-off events. [2023-08-30 10:41:22,726 INFO L131 PetriNetUnfolder]: For 5695/5695 co-relation queries the response was YES. [2023-08-30 10:41:22,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1777 conditions, 469 events. 68/469 cut-off events. For 5695/5695 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 468 event pairs, 6 based on Foata normal form. 0/424 useless extension candidates. Maximal degree in co-relation 1719. Up to 360 conditions per place. [2023-08-30 10:41:22,728 INFO L137 encePairwiseOnDemand]: 544/547 looper letters, 79 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2023-08-30 10:41:22,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 85 transitions, 1188 flow [2023-08-30 10:41:22,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:41:22,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:41:22,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 756 transitions. [2023-08-30 10:41:22,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4606946983546618 [2023-08-30 10:41:22,730 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 756 transitions. [2023-08-30 10:41:22,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 756 transitions. [2023-08-30 10:41:22,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:41:22,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 756 transitions. [2023-08-30 10:41:22,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:22,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:22,732 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:22,732 INFO L175 Difference]: Start difference. First operand has 132 places, 83 transitions, 1014 flow. Second operand 3 states and 756 transitions. [2023-08-30 10:41:22,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 85 transitions, 1188 flow [2023-08-30 10:41:22,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 85 transitions, 1182 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:41:22,742 INFO L231 Difference]: Finished difference. Result has 131 places, 82 transitions, 1012 flow [2023-08-30 10:41:22,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=1008, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1012, PETRI_PLACES=131, PETRI_TRANSITIONS=82} [2023-08-30 10:41:22,743 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 90 predicate places. [2023-08-30 10:41:22,743 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 82 transitions, 1012 flow [2023-08-30 10:41:22,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:22,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:41:22,743 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:41:22,944 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forcibly destroying the process [2023-08-30 10:41:22,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 137 [2023-08-30 10:41:22,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:41:22,980 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:41:22,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:41:22,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1305254803, now seen corresponding path program 1 times [2023-08-30 10:41:22,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:41:22,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563039438] [2023-08-30 10:41:22,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:41:22,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:41:25,820 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:41:25,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1611974654] [2023-08-30 10:41:25,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:41:25,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:41:25,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:41:25,822 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:41:25,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 10:41:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:41:53,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 70721 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 10:41:53,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:41:53,614 INFO L134 CoverageAnalysis]: Checked inductivity of 47950 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47950 trivial. 0 not checked. [2023-08-30 10:41:53,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:41:53,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:41:53,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563039438] [2023-08-30 10:41:53,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:41:53,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611974654] [2023-08-30 10:41:53,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611974654] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:41:53,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:41:53,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:41:53,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466566107] [2023-08-30 10:41:53,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:41:53,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:41:53,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:41:53,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:41:53,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:41:53,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 547 [2023-08-30 10:41:53,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 82 transitions, 1012 flow. Second operand has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:53,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:41:53,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 547 [2023-08-30 10:41:53,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:41:54,170 INFO L130 PetriNetUnfolder]: 65/460 cut-off events. [2023-08-30 10:41:54,170 INFO L131 PetriNetUnfolder]: For 5654/5654 co-relation queries the response was YES. [2023-08-30 10:41:54,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1747 conditions, 460 events. 65/460 cut-off events. For 5654/5654 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 420 event pairs, 0 based on Foata normal form. 4/428 useless extension candidates. Maximal degree in co-relation 1689. Up to 339 conditions per place. [2023-08-30 10:41:54,172 INFO L137 encePairwiseOnDemand]: 545/547 looper letters, 79 selfloop transitions, 1 changer transitions 0/84 dead transitions. [2023-08-30 10:41:54,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 84 transitions, 1182 flow [2023-08-30 10:41:54,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:41:54,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:41:54,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 758 transitions. [2023-08-30 10:41:54,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619134673979281 [2023-08-30 10:41:54,174 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 758 transitions. [2023-08-30 10:41:54,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 758 transitions. [2023-08-30 10:41:54,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:41:54,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 758 transitions. [2023-08-30 10:41:54,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:54,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:54,177 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:54,177 INFO L175 Difference]: Start difference. First operand has 131 places, 82 transitions, 1012 flow. Second operand 3 states and 758 transitions. [2023-08-30 10:41:54,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 84 transitions, 1182 flow [2023-08-30 10:41:54,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 84 transitions, 1178 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:41:54,188 INFO L231 Difference]: Finished difference. Result has 130 places, 81 transitions, 1008 flow [2023-08-30 10:41:54,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1008, PETRI_PLACES=130, PETRI_TRANSITIONS=81} [2023-08-30 10:41:54,189 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 89 predicate places. [2023-08-30 10:41:54,189 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 81 transitions, 1008 flow [2023-08-30 10:41:54,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:54,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:41:54,189 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:41:54,400 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forcibly destroying the process [2023-08-30 10:41:54,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 137 [2023-08-30 10:41:54,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 10:41:54,441 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:41:54,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:41:54,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1341096532, now seen corresponding path program 1 times [2023-08-30 10:41:54,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:41:54,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280828600] [2023-08-30 10:41:54,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:41:54,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:41:57,867 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:41:57,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848580848] [2023-08-30 10:41:57,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:41:57,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:41:57,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:41:57,869 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:41:57,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 10:42:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:42:28,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 70714 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:42:28,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:42:28,321 INFO L134 CoverageAnalysis]: Checked inductivity of 47951 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47951 trivial. 0 not checked. [2023-08-30 10:42:28,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:42:28,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:42:28,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280828600] [2023-08-30 10:42:28,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:42:28,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848580848] [2023-08-30 10:42:28,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848580848] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:42:28,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:42:28,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:42:28,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493938976] [2023-08-30 10:42:28,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:42:28,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:42:28,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:42:28,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:42:28,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:42:28,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 547 [2023-08-30 10:42:28,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 81 transitions, 1008 flow. Second operand has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:28,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:42:28,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 547 [2023-08-30 10:42:28,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:42:28,878 INFO L130 PetriNetUnfolder]: 64/462 cut-off events. [2023-08-30 10:42:28,878 INFO L131 PetriNetUnfolder]: For 5656/5656 co-relation queries the response was YES. [2023-08-30 10:42:28,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1752 conditions, 462 events. 64/462 cut-off events. For 5656/5656 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 478 event pairs, 28 based on Foata normal form. 0/421 useless extension candidates. Maximal degree in co-relation 1694. Up to 414 conditions per place. [2023-08-30 10:42:28,881 INFO L137 encePairwiseOnDemand]: 545/547 looper letters, 91 selfloop transitions, 1 changer transitions 0/96 dead transitions. [2023-08-30 10:42:28,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 96 transitions, 1224 flow [2023-08-30 10:42:28,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:42:28,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:42:28,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 767 transitions. [2023-08-30 10:42:28,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673979280926264 [2023-08-30 10:42:28,884 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 767 transitions. [2023-08-30 10:42:28,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 767 transitions. [2023-08-30 10:42:28,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:42:28,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 767 transitions. [2023-08-30 10:42:28,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:28,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:28,887 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:28,887 INFO L175 Difference]: Start difference. First operand has 130 places, 81 transitions, 1008 flow. Second operand 3 states and 767 transitions. [2023-08-30 10:42:28,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 96 transitions, 1224 flow [2023-08-30 10:42:28,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 96 transitions, 1222 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:42:28,900 INFO L231 Difference]: Finished difference. Result has 130 places, 80 transitions, 1007 flow [2023-08-30 10:42:28,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1007, PETRI_PLACES=130, PETRI_TRANSITIONS=80} [2023-08-30 10:42:28,900 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 89 predicate places. [2023-08-30 10:42:28,900 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 80 transitions, 1007 flow [2023-08-30 10:42:28,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:28,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:42:28,901 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:42:29,109 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forcibly destroying the process [2023-08-30 10:42:29,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 137 [2023-08-30 10:42:29,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 10:42:29,149 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:42:29,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:42:29,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1801996990, now seen corresponding path program 1 times [2023-08-30 10:42:29,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:42:29,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953355315] [2023-08-30 10:42:29,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:42:29,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:42:32,229 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:42:32,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989044364] [2023-08-30 10:42:32,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:42:32,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:42:32,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:42:32,231 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:42:32,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 10:43:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:43:05,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 70714 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:43:05,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:43:05,608 INFO L134 CoverageAnalysis]: Checked inductivity of 47951 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47951 trivial. 0 not checked. [2023-08-30 10:43:05,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:43:05,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:43:05,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953355315] [2023-08-30 10:43:05,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:43:05,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989044364] [2023-08-30 10:43:05,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989044364] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:43:05,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:43:05,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:43:05,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394673624] [2023-08-30 10:43:05,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:43:05,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:43:05,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:43:05,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:43:05,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:43:05,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 547 [2023-08-30 10:43:05,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 80 transitions, 1007 flow. Second operand has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:05,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:43:05,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 547 [2023-08-30 10:43:05,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:43:06,399 INFO L130 PetriNetUnfolder]: 64/461 cut-off events. [2023-08-30 10:43:06,399 INFO L131 PetriNetUnfolder]: For 5692/5692 co-relation queries the response was YES. [2023-08-30 10:43:06,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1765 conditions, 461 events. 64/461 cut-off events. For 5692/5692 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 470 event pairs, 28 based on Foata normal form. 1/436 useless extension candidates. Maximal degree in co-relation 1707. Up to 414 conditions per place. [2023-08-30 10:43:06,402 INFO L137 encePairwiseOnDemand]: 545/547 looper letters, 87 selfloop transitions, 1 changer transitions 3/95 dead transitions. [2023-08-30 10:43:06,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 95 transitions, 1220 flow [2023-08-30 10:43:06,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:43:06,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:43:06,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 766 transitions. [2023-08-30 10:43:06,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4667885435709933 [2023-08-30 10:43:06,404 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 766 transitions. [2023-08-30 10:43:06,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 766 transitions. [2023-08-30 10:43:06,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:43:06,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 766 transitions. [2023-08-30 10:43:06,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:06,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:06,406 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:06,406 INFO L175 Difference]: Start difference. First operand has 130 places, 80 transitions, 1007 flow. Second operand 3 states and 766 transitions. [2023-08-30 10:43:06,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 95 transitions, 1220 flow [2023-08-30 10:43:06,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 95 transitions, 1219 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:43:06,418 INFO L231 Difference]: Finished difference. Result has 130 places, 77 transitions, 999 flow [2023-08-30 10:43:06,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=999, PETRI_PLACES=130, PETRI_TRANSITIONS=77} [2023-08-30 10:43:06,418 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 89 predicate places. [2023-08-30 10:43:06,418 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 77 transitions, 999 flow [2023-08-30 10:43:06,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:06,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:43:06,419 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:43:06,621 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forcibly destroying the process [2023-08-30 10:43:06,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 137 [2023-08-30 10:43:06,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 10:43:06,661 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:43:06,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:43:06,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1794925643, now seen corresponding path program 1 times [2023-08-30 10:43:06,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:43:06,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91644959] [2023-08-30 10:43:06,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:43:06,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:43:09,858 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:43:09,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [705948684] [2023-08-30 10:43:09,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:43:09,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:43:09,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:43:09,861 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:43:09,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process Killed by 15