./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/09-regions_21-arrayloop2_nr.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/09-regions_21-arrayloop2_nr.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 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 06:13:58,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:13:58,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:13:58,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:13:58,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:13:58,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:13:58,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:13:58,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:13:58,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:13:58,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:13:58,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:13:58,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:13:58,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:13:58,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:13:58,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:13:58,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:13:58,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:13:58,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:13:58,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:13:58,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:13:58,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:13:58,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:13:58,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:13:58,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:13:58,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:13:58,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:13:58,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:13:58,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:13:58,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:13:58,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:13:58,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:13:58,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:13:58,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:13:58,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:13:58,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:13:58,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:13:58,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:13:58,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:13:58,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:13:58,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:13:58,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:13:58,237 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:13:58,270 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:13:58,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:13:58,271 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:13:58,271 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:13:58,272 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:13:58,272 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:13:58,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:13:58,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:13:58,273 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:13:58,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:13:58,274 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:13:58,275 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:13:58,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:13:58,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:13:58,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:13:58,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:13:58,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:13:58,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:13:58,276 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:13:58,276 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:13:58,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:13:58,277 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:13:58,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:13:58,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:13:58,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:13:58,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:13:58,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:13:58,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:13:58,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:13:58,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:13:58,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:13:58,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:13:58,279 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:13:58,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:13:58,279 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:13:58,280 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:13:58,280 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:13:58,280 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:13:58,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:13:58,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:13:58,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:13:58,589 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:13:58,589 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:13:58,591 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_21-arrayloop2_nr.i [2023-09-01 06:13:59,892 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:14:00,154 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:14:00,157 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_21-arrayloop2_nr.i [2023-09-01 06:14:00,170 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33418ada0/b60ef9450b85471a8c667ee0419193a2/FLAG461bbf3be [2023-09-01 06:14:00,182 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33418ada0/b60ef9450b85471a8c667ee0419193a2 [2023-09-01 06:14:00,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:14:00,191 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:14:00,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:14:00,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:14:00,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:14:00,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:14:00" (1/1) ... [2023-09-01 06:14:00,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31b03eaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:14:00, skipping insertion in model container [2023-09-01 06:14:00,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:14:00" (1/1) ... [2023-09-01 06:14:00,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:14:00,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:14:00,593 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 06:14:00,593 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 06:14:00,595 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 06:14:00,596 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 06:14:00,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:14:00,647 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:14:00,683 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 06:14:00,684 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 06:14:00,684 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 06:14:00,684 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 06:14:00,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:14:00,761 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:14:00,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:14:00 WrapperNode [2023-09-01 06:14:00,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:14:00,763 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:14:00,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:14:00,764 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:14:00,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:14:00" (1/1) ... [2023-09-01 06:14:00,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:14:00" (1/1) ... [2023-09-01 06:14:00,817 INFO L138 Inliner]: procedures = 271, calls = 32, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 128 [2023-09-01 06:14:00,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:14:00,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:14:00,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:14:00,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:14:00,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:14:00" (1/1) ... [2023-09-01 06:14:00,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:14:00" (1/1) ... [2023-09-01 06:14:00,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:14:00" (1/1) ... [2023-09-01 06:14:00,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:14:00" (1/1) ... [2023-09-01 06:14:00,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:14:00" (1/1) ... [2023-09-01 06:14:00,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:14:00" (1/1) ... [2023-09-01 06:14:00,840 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:14:00" (1/1) ... [2023-09-01 06:14:00,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:14:00" (1/1) ... [2023-09-01 06:14:00,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:14:00,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:14:00,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:14:00,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:14:00,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:14:00" (1/1) ... [2023-09-01 06:14:00,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:14:00,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:14:00,889 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) [2023-09-01 06:14:00,909 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 [2023-09-01 06:14:00,942 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-09-01 06:14:00,942 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-09-01 06:14:00,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:14:00,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-09-01 06:14:00,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:14:00,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:14:00,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:14:00,943 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:14:00,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 06:14:00,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:14:00,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 06:14:00,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:14:00,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:14:00,945 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 06:14:01,144 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:14:01,146 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:14:01,451 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:14:01,459 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:14:01,459 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 06:14:01,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:14:01 BoogieIcfgContainer [2023-09-01 06:14:01,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:14:01,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:14:01,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:14:01,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:14:01,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:14:00" (1/3) ... [2023-09-01 06:14:01,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bcac2e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:14:01, skipping insertion in model container [2023-09-01 06:14:01,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:14:00" (2/3) ... [2023-09-01 06:14:01,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bcac2e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:14:01, skipping insertion in model container [2023-09-01 06:14:01,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:14:01" (3/3) ... [2023-09-01 06:14:01,475 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_21-arrayloop2_nr.i [2023-09-01 06:14:01,482 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:14:01,490 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:14:01,491 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-09-01 06:14:01,491 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:14:01,591 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:14:01,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 189 transitions, 388 flow [2023-09-01 06:14:01,728 INFO L130 PetriNetUnfolder]: 14/187 cut-off events. [2023-09-01 06:14:01,728 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:14:01,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 187 events. 14/187 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 501 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 130. Up to 2 conditions per place. [2023-09-01 06:14:01,734 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 189 transitions, 388 flow [2023-09-01 06:14:01,742 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 187 transitions, 380 flow [2023-09-01 06:14:01,745 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:14:01,757 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 187 transitions, 380 flow [2023-09-01 06:14:01,761 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 187 transitions, 380 flow [2023-09-01 06:14:01,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 187 transitions, 380 flow [2023-09-01 06:14:01,797 INFO L130 PetriNetUnfolder]: 14/187 cut-off events. [2023-09-01 06:14:01,798 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:14:01,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 187 events. 14/187 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 501 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 130. Up to 2 conditions per place. [2023-09-01 06:14:01,804 INFO L119 LiptonReduction]: Number of co-enabled transitions 7154 [2023-09-01 06:14:32,305 WARN L222 SmtUtils]: Spent 12.73s 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) [2023-09-01 06:14:39,009 WARN L222 SmtUtils]: Spent 6.70s 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) [2023-09-01 06:14:56,567 WARN L222 SmtUtils]: Spent 17.55s 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) [2023-09-01 06:15:04,082 WARN L222 SmtUtils]: Spent 7.51s 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) [2023-09-01 06:15:15,152 WARN L222 SmtUtils]: Spent 11.07s on a formula simplification. DAG size of input: 190 DAG size of output: 188 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 06:15:20,367 WARN L222 SmtUtils]: Spent 5.21s 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) [2023-09-01 06:15:35,168 WARN L222 SmtUtils]: Spent 14.80s on a formula simplification. DAG size of input: 190 DAG size of output: 188 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 06:15:41,798 WARN L222 SmtUtils]: Spent 6.63s 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) [2023-09-01 06:15:41,802 INFO L134 LiptonReduction]: Checked pairs total: 7450 [2023-09-01 06:15:41,802 INFO L136 LiptonReduction]: Total number of compositions: 191 [2023-09-01 06:15:41,814 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 06:15:41,818 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;@24b64cd5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:15:41,819 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-09-01 06:15:41,823 INFO L130 PetriNetUnfolder]: 2/6 cut-off events. [2023-09-01 06:15:41,824 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:15:41,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:15:41,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 06:15:41,825 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 06:15:41,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:15:41,829 INFO L85 PathProgramCache]: Analyzing trace with hash 624569, now seen corresponding path program 1 times [2023-09-01 06:15:41,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:15:41,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513539855] [2023-09-01 06:15:41,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:15:41,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:15:42,021 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 06:15:42,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1177452715] [2023-09-01 06:15:42,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:15:42,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:15:42,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:15:42,025 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) [2023-09-01 06:15:42,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 06:15:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:15:42,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 06:15:42,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:15:42,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:15:42,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 06:15:42,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:15:42,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513539855] [2023-09-01 06:15:42,143 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 06:15:42,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177452715] [2023-09-01 06:15:42,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177452715] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:15:42,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:15:42,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 06:15:42,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688089303] [2023-09-01 06:15:42,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:15:42,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:15:42,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:15:42,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:15:42,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:15:42,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 380 [2023-09-01 06:15:42,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:42,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:15:42,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 380 [2023-09-01 06:15:42,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:15:42,763 INFO L130 PetriNetUnfolder]: 436/710 cut-off events. [2023-09-01 06:15:42,764 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 06:15:42,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 710 events. 436/710 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2779 event pairs, 340 based on Foata normal form. 0/425 useless extension candidates. Maximal degree in co-relation 1412. Up to 706 conditions per place. [2023-09-01 06:15:42,774 INFO L137 encePairwiseOnDemand]: 371/380 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-09-01 06:15:42,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 174 flow [2023-09-01 06:15:42,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:15:42,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:15:42,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 568 transitions. [2023-09-01 06:15:42,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4982456140350877 [2023-09-01 06:15:42,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 568 transitions. [2023-09-01 06:15:42,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 568 transitions. [2023-09-01 06:15:42,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:15:42,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 568 transitions. [2023-09-01 06:15:42,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:42,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:42,818 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:42,820 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 84 flow. Second operand 3 states and 568 transitions. [2023-09-01 06:15:42,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 174 flow [2023-09-01 06:15:42,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 06:15:42,827 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 110 flow [2023-09-01 06:15:42,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=41, PETRI_TRANSITIONS=40} [2023-09-01 06:15:42,833 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-09-01 06:15:42,833 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 110 flow [2023-09-01 06:15:42,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:42,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:15:42,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 06:15:42,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 06:15:43,041 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 [2023-09-01 06:15:43,042 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 06:15:43,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:15:43,042 INFO L85 PathProgramCache]: Analyzing trace with hash 624704, now seen corresponding path program 1 times [2023-09-01 06:15:43,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:15:43,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3544089] [2023-09-01 06:15:43,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:15:43,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:15:43,089 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 06:15:43,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2010808201] [2023-09-01 06:15:43,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:15:43,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:15:43,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:15:43,091 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) [2023-09-01 06:15:43,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 06:15:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:15:43,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 06:15:43,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:15:43,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:15:43,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 06:15:43,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:15:43,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3544089] [2023-09-01 06:15:43,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 06:15:43,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010808201] [2023-09-01 06:15:43,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010808201] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:15:43,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:15:43,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:15:43,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007760841] [2023-09-01 06:15:43,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:15:43,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:15:43,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:15:43,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:15:43,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:15:43,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 380 [2023-09-01 06:15:43,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:43,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:15:43,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 380 [2023-09-01 06:15:43,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:15:43,534 INFO L130 PetriNetUnfolder]: 435/708 cut-off events. [2023-09-01 06:15:43,534 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 06:15:43,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1454 conditions, 708 events. 435/708 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2773 event pairs, 340 based on Foata normal form. 2/430 useless extension candidates. Maximal degree in co-relation 1438. Up to 707 conditions per place. [2023-09-01 06:15:43,538 INFO L137 encePairwiseOnDemand]: 378/380 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-09-01 06:15:43,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 39 transitions, 180 flow [2023-09-01 06:15:43,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:15:43,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:15:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 564 transitions. [2023-09-01 06:15:43,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49473684210526314 [2023-09-01 06:15:43,542 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 564 transitions. [2023-09-01 06:15:43,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 564 transitions. [2023-09-01 06:15:43,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:15:43,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 564 transitions. [2023-09-01 06:15:43,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:43,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:43,548 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:43,548 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 110 flow. Second operand 3 states and 564 transitions. [2023-09-01 06:15:43,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 39 transitions, 180 flow [2023-09-01 06:15:43,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 06:15:43,551 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 103 flow [2023-09-01 06:15:43,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-09-01 06:15:43,552 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-09-01 06:15:43,553 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 103 flow [2023-09-01 06:15:43,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:43,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:15:43,554 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-09-01 06:15:43,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 06:15:43,760 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 [2023-09-01 06:15:43,760 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 06:15:43,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:15:43,760 INFO L85 PathProgramCache]: Analyzing trace with hash 600332775, now seen corresponding path program 1 times [2023-09-01 06:15:43,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:15:43,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360426710] [2023-09-01 06:15:43,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:15:43,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:15:43,803 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 06:15:43,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1359168856] [2023-09-01 06:15:43,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:15:43,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:15:43,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:15:43,829 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) [2023-09-01 06:15:43,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 06:15:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:15:43,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2023-09-01 06:15:43,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:15:43,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:15:43,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 06:15:43,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:15:43,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360426710] [2023-09-01 06:15:43,932 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 06:15:43,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359168856] [2023-09-01 06:15:43,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359168856] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:15:43,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:15:43,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 06:15:43,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698296842] [2023-09-01 06:15:43,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:15:43,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:15:43,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:15:43,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:15:43,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:15:43,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 380 [2023-09-01 06:15:43,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:43,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:15:43,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 380 [2023-09-01 06:15:43,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:15:44,190 INFO L130 PetriNetUnfolder]: 435/712 cut-off events. [2023-09-01 06:15:44,190 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:15:44,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1465 conditions, 712 events. 435/712 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2753 event pairs, 340 based on Foata normal form. 1/432 useless extension candidates. Maximal degree in co-relation 1454. Up to 709 conditions per place. [2023-09-01 06:15:44,194 INFO L137 encePairwiseOnDemand]: 375/380 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-09-01 06:15:44,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 197 flow [2023-09-01 06:15:44,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:15:44,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:15:44,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 568 transitions. [2023-09-01 06:15:44,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4982456140350877 [2023-09-01 06:15:44,197 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 568 transitions. [2023-09-01 06:15:44,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 568 transitions. [2023-09-01 06:15:44,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:15:44,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 568 transitions. [2023-09-01 06:15:44,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:44,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:44,202 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:44,202 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 103 flow. Second operand 3 states and 568 transitions. [2023-09-01 06:15:44,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 197 flow [2023-09-01 06:15:44,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 197 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 06:15:44,204 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 124 flow [2023-09-01 06:15:44,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-09-01 06:15:44,206 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2023-09-01 06:15:44,206 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 124 flow [2023-09-01 06:15:44,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:44,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:15:44,207 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 06:15:44,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 06:15:44,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:15:44,415 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 06:15:44,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:15:44,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1431297834, now seen corresponding path program 1 times [2023-09-01 06:15:44,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:15:44,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587036238] [2023-09-01 06:15:44,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:15:44,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:15:44,480 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 06:15:44,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1286017498] [2023-09-01 06:15:44,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:15:44,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:15:44,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:15:44,487 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) [2023-09-01 06:15:44,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 06:15:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:15:44,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 06:15:44,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:15:44,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:15:44,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:15:44,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:15:44,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:15:44,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587036238] [2023-09-01 06:15:44,672 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 06:15:44,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286017498] [2023-09-01 06:15:44,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286017498] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:15:44,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 06:15:44,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-09-01 06:15:44,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000998374] [2023-09-01 06:15:44,673 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 06:15:44,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 06:15:44,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:15:44,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 06:15:44,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-09-01 06:15:44,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 380 [2023-09-01 06:15:44,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 124 flow. Second operand has 6 states, 6 states have (on average 175.5) internal successors, (1053), 6 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:44,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:15:44,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 380 [2023-09-01 06:15:44,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:15:45,067 INFO L130 PetriNetUnfolder]: 437/724 cut-off events. [2023-09-01 06:15:45,068 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 06:15:45,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 724 events. 437/724 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2821 event pairs, 340 based on Foata normal form. 6/447 useless extension candidates. Maximal degree in co-relation 1501. Up to 707 conditions per place. [2023-09-01 06:15:45,072 INFO L137 encePairwiseOnDemand]: 373/380 looper letters, 43 selfloop transitions, 8 changer transitions 0/51 dead transitions. [2023-09-01 06:15:45,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 51 transitions, 270 flow [2023-09-01 06:15:45,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 06:15:45,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 06:15:45,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1102 transitions. [2023-09-01 06:15:45,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2023-09-01 06:15:45,075 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1102 transitions. [2023-09-01 06:15:45,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1102 transitions. [2023-09-01 06:15:45,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:15:45,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1102 transitions. [2023-09-01 06:15:45,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 183.66666666666666) internal successors, (1102), 6 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:45,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 380.0) internal successors, (2660), 7 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:45,083 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 380.0) internal successors, (2660), 7 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:45,083 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 124 flow. Second operand 6 states and 1102 transitions. [2023-09-01 06:15:45,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 51 transitions, 270 flow [2023-09-01 06:15:45,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 267 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:15:45,085 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 200 flow [2023-09-01 06:15:45,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2023-09-01 06:15:45,086 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 12 predicate places. [2023-09-01 06:15:45,087 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 200 flow [2023-09-01 06:15:45,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 175.5) internal successors, (1053), 6 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:45,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:15:45,088 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-09-01 06:15:45,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 06:15:45,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:15:45,294 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 06:15:45,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:15:45,295 INFO L85 PathProgramCache]: Analyzing trace with hash 203494055, now seen corresponding path program 2 times [2023-09-01 06:15:45,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:15:45,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663282969] [2023-09-01 06:15:45,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:15:45,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:15:45,357 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 06:15:45,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259177329] [2023-09-01 06:15:45,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 06:15:45,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:15:45,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:15:45,359 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) [2023-09-01 06:15:45,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 06:15:45,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 06:15:45,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:15:45,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 06:15:45,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:15:45,570 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-09-01 06:15:45,570 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 06:15:45,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:15:45,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663282969] [2023-09-01 06:15:45,571 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 06:15:45,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259177329] [2023-09-01 06:15:45,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259177329] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:15:45,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:15:45,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:15:45,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022175650] [2023-09-01 06:15:45,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:15:45,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:15:45,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:15:45,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:15:45,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:15:45,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 380 [2023-09-01 06:15:45,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:45,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:15:45,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 380 [2023-09-01 06:15:45,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:15:45,845 INFO L130 PetriNetUnfolder]: 437/722 cut-off events. [2023-09-01 06:15:45,846 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-09-01 06:15:45,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1552 conditions, 722 events. 437/722 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2799 event pairs, 340 based on Foata normal form. 1/441 useless extension candidates. Maximal degree in co-relation 1533. Up to 721 conditions per place. [2023-09-01 06:15:45,849 INFO L137 encePairwiseOnDemand]: 376/380 looper letters, 42 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-09-01 06:15:45,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 290 flow [2023-09-01 06:15:45,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:15:45,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:15:45,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 559 transitions. [2023-09-01 06:15:45,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4903508771929825 [2023-09-01 06:15:45,852 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 559 transitions. [2023-09-01 06:15:45,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 559 transitions. [2023-09-01 06:15:45,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:15:45,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 559 transitions. [2023-09-01 06:15:45,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:45,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:45,857 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:45,857 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 200 flow. Second operand 3 states and 559 transitions. [2023-09-01 06:15:45,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 290 flow [2023-09-01 06:15:45,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 45 transitions, 279 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-09-01 06:15:45,860 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 202 flow [2023-09-01 06:15:45,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2023-09-01 06:15:45,861 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2023-09-01 06:15:45,861 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 202 flow [2023-09-01 06:15:45,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:45,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:15:45,862 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-09-01 06:15:45,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 06:15:46,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:15:46,068 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 06:15:46,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:15:46,069 INFO L85 PathProgramCache]: Analyzing trace with hash 2013353102, now seen corresponding path program 3 times [2023-09-01 06:15:46,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:15:46,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154292503] [2023-09-01 06:15:46,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:15:46,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:15:46,171 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 06:15:46,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793571966] [2023-09-01 06:15:46,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 06:15:46,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:15:46,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:15:46,182 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) [2023-09-01 06:15:46,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 06:15:46,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 06:15:46,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:15:46,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 06:15:46,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:15:46,546 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 06:15:46,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 06:15:46,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:15:46,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154292503] [2023-09-01 06:15:46,547 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 06:15:46,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793571966] [2023-09-01 06:15:46,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793571966] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:15:46,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:15:46,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 06:15:46,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899858635] [2023-09-01 06:15:46,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:15:46,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 06:15:46,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:15:46,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 06:15:46,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-09-01 06:15:46,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 380 [2023-09-01 06:15:46,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 171.16666666666666) internal successors, (1027), 6 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:46,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:15:46,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 380 [2023-09-01 06:15:46,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:15:46,952 INFO L130 PetriNetUnfolder]: 436/717 cut-off events. [2023-09-01 06:15:46,952 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2023-09-01 06:15:46,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 717 events. 436/717 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2781 event pairs, 340 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 1508. Up to 709 conditions per place. [2023-09-01 06:15:46,956 INFO L137 encePairwiseOnDemand]: 374/380 looper letters, 43 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2023-09-01 06:15:46,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 299 flow [2023-09-01 06:15:46,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 06:15:46,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 06:15:46,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 891 transitions. [2023-09-01 06:15:46,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4689473684210526 [2023-09-01 06:15:46,959 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 891 transitions. [2023-09-01 06:15:46,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 891 transitions. [2023-09-01 06:15:46,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:15:46,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 891 transitions. [2023-09-01 06:15:46,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 178.2) internal successors, (891), 5 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:46,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 380.0) internal successors, (2280), 6 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:46,965 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 380.0) internal successors, (2280), 6 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:46,965 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 202 flow. Second operand 5 states and 891 transitions. [2023-09-01 06:15:46,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 299 flow [2023-09-01 06:15:46,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 47 transitions, 291 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 06:15:46,970 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 185 flow [2023-09-01 06:15:46,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=185, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2023-09-01 06:15:46,971 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 15 predicate places. [2023-09-01 06:15:46,971 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 185 flow [2023-09-01 06:15:46,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 171.16666666666666) internal successors, (1027), 6 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:46,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:15:46,972 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-09-01 06:15:46,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 06:15:47,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:15:47,179 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 06:15:47,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:15:47,179 INFO L85 PathProgramCache]: Analyzing trace with hash 2013353170, now seen corresponding path program 1 times [2023-09-01 06:15:47,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:15:47,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732548992] [2023-09-01 06:15:47,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:15:47,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:15:47,244 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 06:15:47,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1869178265] [2023-09-01 06:15:47,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:15:47,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:15:47,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:15:47,246 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) [2023-09-01 06:15:47,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 06:15:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:15:47,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 06:15:47,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:15:47,733 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 06:15:47,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:15:47,803 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 06:15:47,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:15:47,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732548992] [2023-09-01 06:15:47,804 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 06:15:47,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869178265] [2023-09-01 06:15:47,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869178265] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:15:47,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 06:15:47,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-09-01 06:15:47,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839584398] [2023-09-01 06:15:47,805 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 06:15:47,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 06:15:47,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:15:47,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 06:15:47,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-09-01 06:15:47,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 380 [2023-09-01 06:15:47,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 185 flow. Second operand has 12 states, 12 states have (on average 175.33333333333334) internal successors, (2104), 12 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:47,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:15:47,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 380 [2023-09-01 06:15:47,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:15:48,716 INFO L130 PetriNetUnfolder]: 436/735 cut-off events. [2023-09-01 06:15:48,716 INFO L131 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2023-09-01 06:15:48,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1610 conditions, 735 events. 436/735 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2915 event pairs, 340 based on Foata normal form. 12/470 useless extension candidates. Maximal degree in co-relation 1588. Up to 706 conditions per place. [2023-09-01 06:15:48,722 INFO L137 encePairwiseOnDemand]: 375/380 looper letters, 43 selfloop transitions, 14 changer transitions 0/57 dead transitions. [2023-09-01 06:15:48,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 57 transitions, 399 flow [2023-09-01 06:15:48,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 06:15:48,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 06:15:48,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2154 transitions. [2023-09-01 06:15:48,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4723684210526316 [2023-09-01 06:15:48,734 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2154 transitions. [2023-09-01 06:15:48,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2154 transitions. [2023-09-01 06:15:48,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:15:48,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2154 transitions. [2023-09-01 06:15:48,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 179.5) internal successors, (2154), 12 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:48,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 380.0) internal successors, (4940), 13 states have internal predecessors, (4940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:48,751 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 380.0) internal successors, (4940), 13 states have internal predecessors, (4940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:48,751 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 185 flow. Second operand 12 states and 2154 transitions. [2023-09-01 06:15:48,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 57 transitions, 399 flow [2023-09-01 06:15:48,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 57 transitions, 393 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-09-01 06:15:48,756 INFO L231 Difference]: Finished difference. Result has 70 places, 50 transitions, 308 flow [2023-09-01 06:15:48,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=308, PETRI_PLACES=70, PETRI_TRANSITIONS=50} [2023-09-01 06:15:48,757 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 30 predicate places. [2023-09-01 06:15:48,757 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 50 transitions, 308 flow [2023-09-01 06:15:48,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 175.33333333333334) internal successors, (2104), 12 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:48,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:15:48,758 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 2, 1, 1, 1] [2023-09-01 06:15:48,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 06:15:48,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:15:48,970 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 06:15:48,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:15:48,970 INFO L85 PathProgramCache]: Analyzing trace with hash -187377742, now seen corresponding path program 2 times [2023-09-01 06:15:48,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:15:48,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109347230] [2023-09-01 06:15:48,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:15:48,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:15:49,095 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 06:15:49,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082451375] [2023-09-01 06:15:49,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 06:15:49,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:15:49,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:15:49,096 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) [2023-09-01 06:15:49,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 06:15:49,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 06:15:49,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:15:49,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 2698 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 06:15:49,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:15:50,059 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 06:15:50,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:15:50,255 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 06:15:50,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:15:50,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109347230] [2023-09-01 06:15:50,255 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 06:15:50,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082451375] [2023-09-01 06:15:50,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082451375] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:15:50,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 06:15:50,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-09-01 06:15:50,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170764499] [2023-09-01 06:15:50,256 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 06:15:50,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 06:15:50,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:15:50,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 06:15:50,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-09-01 06:15:50,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 380 [2023-09-01 06:15:50,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 50 transitions, 308 flow. Second operand has 24 states, 24 states have (on average 175.16666666666666) internal successors, (4204), 24 states have internal predecessors, (4204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:50,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:15:50,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 380 [2023-09-01 06:15:50,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:15:52,631 INFO L130 PetriNetUnfolder]: 436/771 cut-off events. [2023-09-01 06:15:52,631 INFO L131 PetriNetUnfolder]: For 1237/1237 co-relation queries the response was YES. [2023-09-01 06:15:52,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1881 conditions, 771 events. 436/771 cut-off events. For 1237/1237 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3020 event pairs, 340 based on Foata normal form. 24/518 useless extension candidates. Maximal degree in co-relation 1853. Up to 706 conditions per place. [2023-09-01 06:15:52,636 INFO L137 encePairwiseOnDemand]: 375/380 looper letters, 55 selfloop transitions, 26 changer transitions 0/81 dead transitions. [2023-09-01 06:15:52,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 81 transitions, 776 flow [2023-09-01 06:15:52,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-09-01 06:15:52,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-09-01 06:15:52,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4278 transitions. [2023-09-01 06:15:52,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46907894736842104 [2023-09-01 06:15:52,648 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4278 transitions. [2023-09-01 06:15:52,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4278 transitions. [2023-09-01 06:15:52,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:15:52,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4278 transitions. [2023-09-01 06:15:52,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 178.25) internal successors, (4278), 24 states have internal predecessors, (4278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:52,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 380.0) internal successors, (9500), 25 states have internal predecessors, (9500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:52,676 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 380.0) internal successors, (9500), 25 states have internal predecessors, (9500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:52,676 INFO L175 Difference]: Start difference. First operand has 70 places, 50 transitions, 308 flow. Second operand 24 states and 4278 transitions. [2023-09-01 06:15:52,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 81 transitions, 776 flow [2023-09-01 06:15:52,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 81 transitions, 708 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-09-01 06:15:52,681 INFO L231 Difference]: Finished difference. Result has 102 places, 63 transitions, 521 flow [2023-09-01 06:15:52,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=521, PETRI_PLACES=102, PETRI_TRANSITIONS=63} [2023-09-01 06:15:52,682 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 62 predicate places. [2023-09-01 06:15:52,682 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 63 transitions, 521 flow [2023-09-01 06:15:52,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 175.16666666666666) internal successors, (4204), 24 states have internal predecessors, (4204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:52,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:15:52,684 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 2, 1, 1, 1] [2023-09-01 06:15:52,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 06:15:52,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-09-01 06:15:52,897 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 06:15:52,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:15:52,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1892096654, now seen corresponding path program 3 times [2023-09-01 06:15:52,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:15:52,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848250737] [2023-09-01 06:15:52,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:15:52,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:15:53,143 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 06:15:53,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761415282] [2023-09-01 06:15:53,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 06:15:53,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:15:53,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:15:53,145 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) [2023-09-01 06:15:53,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 06:15:54,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 06:15:54,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:15:54,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 06:15:54,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:15:54,160 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-09-01 06:15:54,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:15:54,688 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-09-01 06:15:54,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:15:54,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848250737] [2023-09-01 06:15:54,689 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 06:15:54,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761415282] [2023-09-01 06:15:54,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761415282] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 06:15:54,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 06:15:54,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2023-09-01 06:15:54,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378373032] [2023-09-01 06:15:54,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:15:54,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 06:15:54,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:15:54,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 06:15:54,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-09-01 06:15:56,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-09-01 06:15:59,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-09-01 06:15:59,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 380 [2023-09-01 06:15:59,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 63 transitions, 521 flow. Second operand has 5 states, 5 states have (on average 173.4) internal successors, (867), 5 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:15:59,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:15:59,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 380 [2023-09-01 06:15:59,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:16:01,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-09-01 06:16:01,450 INFO L130 PetriNetUnfolder]: 435/748 cut-off events. [2023-09-01 06:16:01,450 INFO L131 PetriNetUnfolder]: For 598/598 co-relation queries the response was YES. [2023-09-01 06:16:01,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1791 conditions, 748 events. 435/748 cut-off events. For 598/598 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2853 event pairs, 340 based on Foata normal form. 22/494 useless extension candidates. Maximal degree in co-relation 1749. Up to 699 conditions per place. [2023-09-01 06:16:01,457 INFO L137 encePairwiseOnDemand]: 375/380 looper letters, 54 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2023-09-01 06:16:01,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 58 transitions, 544 flow [2023-09-01 06:16:01,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 06:16:01,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 06:16:01,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 724 transitions. [2023-09-01 06:16:01,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763157894736842 [2023-09-01 06:16:01,460 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 724 transitions. [2023-09-01 06:16:01,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 724 transitions. [2023-09-01 06:16:01,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:16:01,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 724 transitions. [2023-09-01 06:16:01,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:01,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 380.0) internal successors, (1900), 5 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:01,471 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 380.0) internal successors, (1900), 5 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:01,471 INFO L175 Difference]: Start difference. First operand has 102 places, 63 transitions, 521 flow. Second operand 4 states and 724 transitions. [2023-09-01 06:16:01,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 58 transitions, 544 flow [2023-09-01 06:16:01,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 58 transitions, 398 flow, removed 52 selfloop flow, removed 16 redundant places. [2023-09-01 06:16:01,477 INFO L231 Difference]: Finished difference. Result has 87 places, 58 transitions, 290 flow [2023-09-01 06:16:01,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=87, PETRI_TRANSITIONS=58} [2023-09-01 06:16:01,478 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 47 predicate places. [2023-09-01 06:16:01,479 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 58 transitions, 290 flow [2023-09-01 06:16:01,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 173.4) internal successors, (867), 5 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:01,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:16:01,480 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:16:01,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 06:16:01,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:16:01,688 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 06:16:01,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:16:01,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1593064758, now seen corresponding path program 1 times [2023-09-01 06:16:01,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:16:01,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047059505] [2023-09-01 06:16:01,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:16:01,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:16:01,945 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 06:16:01,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634590750] [2023-09-01 06:16:01,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:16:01,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:16:01,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:16:01,949 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) [2023-09-01 06:16:01,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 06:16:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:16:03,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 5293 conjuncts, 24 conjunts are in the unsatisfiable core [2023-09-01 06:16:03,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:16:03,841 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:16:03,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:16:04,218 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:16:04,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:16:04,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047059505] [2023-09-01 06:16:04,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 06:16:04,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634590750] [2023-09-01 06:16:04,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634590750] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:16:04,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 06:16:04,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2023-09-01 06:16:04,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156917082] [2023-09-01 06:16:04,220 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 06:16:04,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-09-01 06:16:04,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:16:04,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-09-01 06:16:04,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-09-01 06:16:04,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 380 [2023-09-01 06:16:04,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 58 transitions, 290 flow. Second operand has 32 states, 32 states have (on average 175.25) internal successors, (5608), 32 states have internal predecessors, (5608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:04,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:16:04,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 380 [2023-09-01 06:16:04,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:16:06,243 INFO L130 PetriNetUnfolder]: 435/764 cut-off events. [2023-09-01 06:16:06,243 INFO L131 PetriNetUnfolder]: For 4607/4607 co-relation queries the response was YES. [2023-09-01 06:16:06,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 764 events. 435/764 cut-off events. For 4607/4607 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2853 event pairs, 340 based on Foata normal form. 16/504 useless extension candidates. Maximal degree in co-relation 1684. Up to 705 conditions per place. [2023-09-01 06:16:06,248 INFO L137 encePairwiseOnDemand]: 377/380 looper letters, 33 selfloop transitions, 33 changer transitions 0/66 dead transitions. [2023-09-01 06:16:06,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 66 transitions, 470 flow [2023-09-01 06:16:06,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-09-01 06:16:06,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-09-01 06:16:06,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 5639 transitions. [2023-09-01 06:16:06,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46373355263157895 [2023-09-01 06:16:06,262 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 5639 transitions. [2023-09-01 06:16:06,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 5639 transitions. [2023-09-01 06:16:06,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:16:06,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 5639 transitions. [2023-09-01 06:16:06,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 176.21875) internal successors, (5639), 32 states have internal predecessors, (5639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:06,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 380.0) internal successors, (12540), 33 states have internal predecessors, (12540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:06,293 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 380.0) internal successors, (12540), 33 states have internal predecessors, (12540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:06,293 INFO L175 Difference]: Start difference. First operand has 87 places, 58 transitions, 290 flow. Second operand 32 states and 5639 transitions. [2023-09-01 06:16:06,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 66 transitions, 470 flow [2023-09-01 06:16:06,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 66 transitions, 462 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 06:16:06,300 INFO L231 Difference]: Finished difference. Result has 123 places, 66 transitions, 446 flow [2023-09-01 06:16:06,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=446, PETRI_PLACES=123, PETRI_TRANSITIONS=66} [2023-09-01 06:16:06,302 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 83 predicate places. [2023-09-01 06:16:06,303 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 66 transitions, 446 flow [2023-09-01 06:16:06,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 175.25) internal successors, (5608), 32 states have internal predecessors, (5608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:06,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:16:06,304 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:16:06,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 06:16:06,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-09-01 06:16:06,521 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 06:16:06,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:16:06,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1226306634, now seen corresponding path program 2 times [2023-09-01 06:16:06,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:16:06,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139608618] [2023-09-01 06:16:06,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:16:06,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:16:06,799 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 06:16:06,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [910266228] [2023-09-01 06:16:06,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 06:16:06,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:16:06,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:16:06,801 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) [2023-09-01 06:16:06,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 06:16:08,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 06:16:08,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:16:08,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 7165 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 06:16:08,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:16:09,010 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-09-01 06:16:09,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:16:09,057 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-09-01 06:16:09,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:16:09,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139608618] [2023-09-01 06:16:09,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 06:16:09,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910266228] [2023-09-01 06:16:09,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910266228] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:16:09,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 06:16:09,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-09-01 06:16:09,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248956373] [2023-09-01 06:16:09,058 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 06:16:09,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 06:16:09,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:16:09,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 06:16:09,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-09-01 06:16:09,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 380 [2023-09-01 06:16:09,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 66 transitions, 446 flow. Second operand has 6 states, 6 states have (on average 176.5) internal successors, (1059), 6 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:09,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:16:09,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 380 [2023-09-01 06:16:09,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:16:09,887 INFO L130 PetriNetUnfolder]: 437/831 cut-off events. [2023-09-01 06:16:09,887 INFO L131 PetriNetUnfolder]: For 1655/1655 co-relation queries the response was YES. [2023-09-01 06:16:09,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2188 conditions, 831 events. 437/831 cut-off events. For 1655/1655 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2736 event pairs, 340 based on Foata normal form. 3/558 useless extension candidates. Maximal degree in co-relation 2143. Up to 699 conditions per place. [2023-09-01 06:16:09,893 INFO L137 encePairwiseOnDemand]: 376/380 looper letters, 157 selfloop transitions, 6 changer transitions 0/163 dead transitions. [2023-09-01 06:16:09,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 163 transitions, 1587 flow [2023-09-01 06:16:09,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 06:16:09,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 06:16:09,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1090 transitions. [2023-09-01 06:16:09,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780701754385965 [2023-09-01 06:16:09,897 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1090 transitions. [2023-09-01 06:16:09,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1090 transitions. [2023-09-01 06:16:09,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:16:09,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1090 transitions. [2023-09-01 06:16:09,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 181.66666666666666) internal successors, (1090), 6 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:09,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 380.0) internal successors, (2660), 7 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:09,903 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 380.0) internal successors, (2660), 7 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:09,903 INFO L175 Difference]: Start difference. First operand has 123 places, 66 transitions, 446 flow. Second operand 6 states and 1090 transitions. [2023-09-01 06:16:09,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 163 transitions, 1587 flow [2023-09-01 06:16:09,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 163 transitions, 1201 flow, removed 100 selfloop flow, removed 23 redundant places. [2023-09-01 06:16:09,913 INFO L231 Difference]: Finished difference. Result has 109 places, 69 transitions, 514 flow [2023-09-01 06:16:09,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=514, PETRI_PLACES=109, PETRI_TRANSITIONS=69} [2023-09-01 06:16:09,914 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 69 predicate places. [2023-09-01 06:16:09,914 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 69 transitions, 514 flow [2023-09-01 06:16:09,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.5) internal successors, (1059), 6 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:09,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:16:09,914 INFO L208 CegarLoopForPetriNet]: trace histogram [120, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:16:09,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-09-01 06:16:10,141 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,SelfDestructingSolverStorable10 [2023-09-01 06:16:10,141 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 06:16:10,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:16:10,141 INFO L85 PathProgramCache]: Analyzing trace with hash 752805556, now seen corresponding path program 3 times [2023-09-01 06:16:10,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:16:10,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832969043] [2023-09-01 06:16:10,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:16:10,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:16:11,203 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 06:16:11,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [421283046] [2023-09-01 06:16:11,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 06:16:11,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:16:11,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:16:11,207 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) [2023-09-01 06:16:11,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process Killed by 15