./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 14:30:01,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:30:01,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:30:01,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:30:01,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:30:01,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:30:01,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:30:01,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:30:01,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:30:01,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:30:01,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:30:01,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:30:01,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:30:01,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:30:01,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:30:01,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:30:01,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:30:01,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:30:01,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:30:01,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:30:01,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:30:01,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:30:01,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:30:01,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:30:01,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:30:01,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:30:01,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:30:01,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:30:01,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:30:01,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:30:01,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:30:01,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:30:01,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:30:01,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:30:01,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:30:01,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:30:01,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:30:01,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:30:01,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:30:01,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:30:01,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:30:01,692 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:30:01,724 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:30:01,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:30:01,726 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:30:01,726 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:30:01,727 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:30:01,727 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:30:01,727 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:30:01,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:30:01,728 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:30:01,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:30:01,729 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:30:01,729 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:30:01,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:30:01,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:30:01,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:30:01,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:30:01,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:30:01,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:30:01,730 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:30:01,730 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:30:01,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:30:01,731 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:30:01,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:30:01,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:30:01,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:30:01,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:30:01,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:30:01,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:30:01,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:30:01,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:30:01,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:30:01,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:30:01,733 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:30:01,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:30:01,733 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:30:01,734 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:30:01,734 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:30:01,734 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:30:02,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:30:02,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:30:02,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:30:02,074 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:30:02,075 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:30:02,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2023-08-30 14:30:03,215 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:30:03,480 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:30:03,480 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2023-08-30 14:30:03,492 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d961443e/018543d957b0488b97ee1fb0b0c1ca38/FLAG4bcd99457 [2023-08-30 14:30:03,503 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d961443e/018543d957b0488b97ee1fb0b0c1ca38 [2023-08-30 14:30:03,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:30:03,505 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:30:03,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:30:03,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:30:03,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:30:03,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:30:03" (1/1) ... [2023-08-30 14:30:03,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10fba31c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:30:03, skipping insertion in model container [2023-08-30 14:30:03,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:30:03" (1/1) ... [2023-08-30 14:30:03,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:30:03,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:30:03,927 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2023-08-30 14:30:03,940 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 14:30:03,940 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 14:30:03,940 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 14:30:03,941 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 14:30:03,985 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:30:04,012 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:30:04,045 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2023-08-30 14:30:04,054 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 14:30:04,055 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 14:30:04,056 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 14:30:04,056 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 14:30:04,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:30:04,136 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:30:04,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:30:04 WrapperNode [2023-08-30 14:30:04,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:30:04,139 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:30:04,139 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:30:04,139 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:30:04,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:30:04" (1/1) ... [2023-08-30 14:30:04,176 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:30:04" (1/1) ... [2023-08-30 14:30:04,217 INFO L138 Inliner]: procedures = 279, calls = 51, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 244 [2023-08-30 14:30:04,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:30:04,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:30:04,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:30:04,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:30:04,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:30:04" (1/1) ... [2023-08-30 14:30:04,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:30:04" (1/1) ... [2023-08-30 14:30:04,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:30:04" (1/1) ... [2023-08-30 14:30:04,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:30:04" (1/1) ... [2023-08-30 14:30:04,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:30:04" (1/1) ... [2023-08-30 14:30:04,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:30:04" (1/1) ... [2023-08-30 14:30:04,268 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:30:04" (1/1) ... [2023-08-30 14:30:04,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:30:04" (1/1) ... [2023-08-30 14:30:04,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:30:04,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:30:04,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:30:04,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:30:04,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:30:04" (1/1) ... [2023-08-30 14:30:04,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:30:04,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:30:04,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 14:30:04,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 14:30:04,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:30:04,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 14:30:04,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:30:04,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:30:04,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:30:04,356 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:30:04,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 14:30:04,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:30:04,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 14:30:04,357 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:30:04,357 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:30:04,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:30:04,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:30:04,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:30:04,359 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 14:30:04,546 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:30:04,547 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:30:04,876 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:30:04,884 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:30:04,884 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-30 14:30:04,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:30:04 BoogieIcfgContainer [2023-08-30 14:30:04,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:30:04,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:30:04,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:30:04,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:30:04,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:30:03" (1/3) ... [2023-08-30 14:30:04,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12583f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:30:04, skipping insertion in model container [2023-08-30 14:30:04,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:30:04" (2/3) ... [2023-08-30 14:30:04,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12583f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:30:04, skipping insertion in model container [2023-08-30 14:30:04,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:30:04" (3/3) ... [2023-08-30 14:30:04,895 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_93-evilcollapse_racefree.i [2023-08-30 14:30:04,902 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:30:04,910 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:30:04,910 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-30 14:30:04,911 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:30:05,029 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:30:05,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 268 transitions, 544 flow [2023-08-30 14:30:05,164 INFO L130 PetriNetUnfolder]: 29/284 cut-off events. [2023-08-30 14:30:05,164 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-30 14:30:05,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 284 events. 29/284 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 684 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 150. Up to 4 conditions per place. [2023-08-30 14:30:05,171 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 268 transitions, 544 flow [2023-08-30 14:30:05,177 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 242 places, 265 transitions, 538 flow [2023-08-30 14:30:05,180 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:30:05,191 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 265 transitions, 538 flow [2023-08-30 14:30:05,193 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 265 transitions, 538 flow [2023-08-30 14:30:05,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 265 transitions, 538 flow [2023-08-30 14:30:05,251 INFO L130 PetriNetUnfolder]: 28/281 cut-off events. [2023-08-30 14:30:05,253 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-30 14:30:05,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 281 events. 28/281 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 671 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 150. Up to 4 conditions per place. [2023-08-30 14:30:05,259 INFO L119 LiptonReduction]: Number of co-enabled transitions 5096 [2023-08-30 14:30:26,439 WARN L222 SmtUtils]: Spent 11.27s on a formula simplification. DAG size of input: 187 DAG size of output: 185 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 14:30:32,069 WARN L222 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 177 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 14:30:41,201 WARN L222 SmtUtils]: Spent 9.13s on a formula simplification. DAG size of input: 187 DAG size of output: 185 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 14:30:47,492 WARN L222 SmtUtils]: Spent 6.29s on a formula simplification that was a NOOP. DAG size: 177 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 14:31:01,057 WARN L222 SmtUtils]: Spent 13.56s on a formula simplification. DAG size of input: 192 DAG size of output: 190 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 14:31:07,140 WARN L222 SmtUtils]: Spent 6.08s on a formula simplification that was a NOOP. DAG size: 182 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 14:31:23,278 WARN L222 SmtUtils]: Spent 16.13s on a formula simplification. DAG size of input: 192 DAG size of output: 190 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 14:31:31,947 WARN L222 SmtUtils]: Spent 8.67s on a formula simplification that was a NOOP. DAG size: 182 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 14:31:38,836 WARN L222 SmtUtils]: Spent 6.84s on a formula simplification that was a NOOP. DAG size: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 14:31:46,511 WARN L222 SmtUtils]: Spent 7.67s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 14:31:55,556 WARN L222 SmtUtils]: Spent 5.03s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 14:31:55,561 INFO L134 LiptonReduction]: Checked pairs total: 5321 [2023-08-30 14:31:55,562 INFO L136 LiptonReduction]: Total number of compositions: 279 [2023-08-30 14:31:55,574 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:31:55,578 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;@4806778f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:31:55,578 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-30 14:31:55,583 INFO L130 PetriNetUnfolder]: 2/5 cut-off events. [2023-08-30 14:31:55,584 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:31:55,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:31:55,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:31:55,585 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:31:55,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:31:55,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1046495, now seen corresponding path program 1 times [2023-08-30 14:31:55,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:31:55,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428736890] [2023-08-30 14:31:55,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:55,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:31:55,769 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:31:55,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [795033851] [2023-08-30 14:31:55,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:55,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:55,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:31:55,774 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:31:55,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 14:31:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:31:55,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:31:55,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:31:55,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:31:55,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:31:55,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:31:55,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428736890] [2023-08-30 14:31:55,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:31:55,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795033851] [2023-08-30 14:31:55,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795033851] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:31:55,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:31:55,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:31:55,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196509064] [2023-08-30 14:31:55,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:31:55,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:31:55,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:31:55,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:31:55,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:31:56,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 547 [2023-08-30 14:31:56,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 52 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:31:56,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:31:56,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 547 [2023-08-30 14:31:56,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:31:56,322 INFO L130 PetriNetUnfolder]: 102/233 cut-off events. [2023-08-30 14:31:56,323 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:31:56,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 233 events. 102/233 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 871 event pairs, 80 based on Foata normal form. 12/135 useless extension candidates. Maximal degree in co-relation 404. Up to 209 conditions per place. [2023-08-30 14:31:56,329 INFO L137 encePairwiseOnDemand]: 528/547 looper letters, 38 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-08-30 14:31:56,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 45 transitions, 180 flow [2023-08-30 14:31:56,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:31:56,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:31:56,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 775 transitions. [2023-08-30 14:31:56,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47227300426569163 [2023-08-30 14:31:56,360 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 775 transitions. [2023-08-30 14:31:56,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 775 transitions. [2023-08-30 14:31:56,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:31:56,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 775 transitions. [2023-08-30 14:31:56,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:31:56,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:31:56,380 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:31:56,381 INFO L175 Difference]: Start difference. First operand has 41 places, 52 transitions, 112 flow. Second operand 3 states and 775 transitions. [2023-08-30 14:31:56,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 45 transitions, 180 flow [2023-08-30 14:31:56,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:31:56,388 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 120 flow [2023-08-30 14:31:56,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2023-08-30 14:31:56,393 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2023-08-30 14:31:56,394 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 120 flow [2023-08-30 14:31:56,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:31:56,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:31:56,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:31:56,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 14:31:56,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-08-30 14:31:56,600 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:31:56,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:31:56,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1046659, now seen corresponding path program 1 times [2023-08-30 14:31:56,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:31:56,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999450010] [2023-08-30 14:31:56,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:56,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:31:56,652 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:31:56,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [226708670] [2023-08-30 14:31:56,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:56,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:56,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:31:56,657 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:31:56,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 14:31:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:31:56,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:31:56,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:31:56,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:31:56,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:31:56,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:31:56,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999450010] [2023-08-30 14:31:56,836 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:31:56,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226708670] [2023-08-30 14:31:56,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226708670] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:31:56,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:31:56,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:31:56,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944062441] [2023-08-30 14:31:56,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:31:56,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:31:56,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:31:56,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:31:56,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:31:56,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 547 [2023-08-30 14:31:56,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:31:56,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:31:56,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 547 [2023-08-30 14:31:56,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:31:57,104 INFO L130 PetriNetUnfolder]: 101/231 cut-off events. [2023-08-30 14:31:57,104 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 14:31:57,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 231 events. 101/231 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 867 event pairs, 80 based on Foata normal form. 2/128 useless extension candidates. Maximal degree in co-relation 445. Up to 210 conditions per place. [2023-08-30 14:31:57,106 INFO L137 encePairwiseOnDemand]: 545/547 looper letters, 37 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-30 14:31:57,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 188 flow [2023-08-30 14:31:57,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:31:57,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:31:57,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 761 transitions. [2023-08-30 14:31:57,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46374162096282756 [2023-08-30 14:31:57,109 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 761 transitions. [2023-08-30 14:31:57,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 761 transitions. [2023-08-30 14:31:57,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:31:57,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 761 transitions. [2023-08-30 14:31:57,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:31:57,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:31:57,116 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:31:57,116 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 120 flow. Second operand 3 states and 761 transitions. [2023-08-30 14:31:57,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 188 flow [2023-08-30 14:31:57,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:31:57,118 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 113 flow [2023-08-30 14:31:57,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2023-08-30 14:31:57,119 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2023-08-30 14:31:57,119 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 113 flow [2023-08-30 14:31:57,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:31:57,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:31:57,120 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-08-30 14:31:57,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 14:31:57,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-08-30 14:31:57,326 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:31:57,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:31:57,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1005850871, now seen corresponding path program 1 times [2023-08-30 14:31:57,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:31:57,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122442848] [2023-08-30 14:31:57,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:57,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:31:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:31:57,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:31:57,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:31:57,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122442848] [2023-08-30 14:31:57,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122442848] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:31:57,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:31:57,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:31:57,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367710857] [2023-08-30 14:31:57,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:31:57,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:31:57,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:31:57,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:31:57,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:31:57,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 547 [2023-08-30 14:31:57,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:31:57,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:31:57,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 547 [2023-08-30 14:31:57,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:31:57,727 INFO L130 PetriNetUnfolder]: 101/233 cut-off events. [2023-08-30 14:31:57,727 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:31:57,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 233 events. 101/233 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 868 event pairs, 80 based on Foata normal form. 2/130 useless extension candidates. Maximal degree in co-relation 455. Up to 212 conditions per place. [2023-08-30 14:31:57,729 INFO L137 encePairwiseOnDemand]: 540/547 looper letters, 36 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2023-08-30 14:31:57,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 193 flow [2023-08-30 14:31:57,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:31:57,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:31:57,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 759 transitions. [2023-08-30 14:31:57,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625228519195612 [2023-08-30 14:31:57,735 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 759 transitions. [2023-08-30 14:31:57,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 759 transitions. [2023-08-30 14:31:57,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:31:57,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 759 transitions. [2023-08-30 14:31:57,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:31:57,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:31:57,742 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:31:57,743 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 113 flow. Second operand 3 states and 759 transitions. [2023-08-30 14:31:57,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 193 flow [2023-08-30 14:31:57,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 193 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:31:57,745 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 138 flow [2023-08-30 14:31:57,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-08-30 14:31:57,746 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2023-08-30 14:31:57,746 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 138 flow [2023-08-30 14:31:57,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:31:57,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:31:57,747 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-08-30 14:31:57,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:31:57,747 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:31:57,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:31:57,748 INFO L85 PathProgramCache]: Analyzing trace with hash 278636347, now seen corresponding path program 1 times [2023-08-30 14:31:57,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:31:57,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998369365] [2023-08-30 14:31:57,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:57,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:31:57,807 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:31:57,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1678985045] [2023-08-30 14:31:57,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:57,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:57,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:31:57,812 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:31:57,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 14:31:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:31:58,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:31:58,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:31:58,051 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:31:58,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:31:58,068 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:31:58,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:31:58,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998369365] [2023-08-30 14:31:58,069 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:31:58,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678985045] [2023-08-30 14:31:58,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678985045] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:31:58,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 14:31:58,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-30 14:31:58,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201990144] [2023-08-30 14:31:58,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 14:31:58,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:31:58,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:31:58,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:31:58,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:31:58,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 547 [2023-08-30 14:31:58,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 241.66666666666666) internal successors, (1450), 6 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:31:58,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:31:58,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 547 [2023-08-30 14:31:58,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:31:58,456 INFO L130 PetriNetUnfolder]: 103/245 cut-off events. [2023-08-30 14:31:58,456 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 14:31:58,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 245 events. 103/245 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 927 event pairs, 80 based on Foata normal form. 3/140 useless extension candidates. Maximal degree in co-relation 510. Up to 210 conditions per place. [2023-08-30 14:31:58,458 INFO L137 encePairwiseOnDemand]: 540/547 looper letters, 40 selfloop transitions, 8 changer transitions 0/52 dead transitions. [2023-08-30 14:31:58,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 52 transitions, 282 flow [2023-08-30 14:31:58,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:31:58,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:31:58,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1495 transitions. [2023-08-30 14:31:58,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45551492992078 [2023-08-30 14:31:58,463 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1495 transitions. [2023-08-30 14:31:58,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1495 transitions. [2023-08-30 14:31:58,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:31:58,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1495 transitions. [2023-08-30 14:31:58,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 249.16666666666666) internal successors, (1495), 6 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:31:58,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 547.0) internal successors, (3829), 7 states have internal predecessors, (3829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:31:58,474 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 547.0) internal successors, (3829), 7 states have internal predecessors, (3829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:31:58,474 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 138 flow. Second operand 6 states and 1495 transitions. [2023-08-30 14:31:58,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 52 transitions, 282 flow [2023-08-30 14:31:58,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 277 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:31:58,477 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 216 flow [2023-08-30 14:31:58,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-08-30 14:31:58,478 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2023-08-30 14:31:58,478 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 216 flow [2023-08-30 14:31:58,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 241.66666666666666) internal successors, (1450), 6 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:31:58,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:31:58,479 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-08-30 14:31:58,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 14:31:58,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:58,689 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:31:58,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:31:58,690 INFO L85 PathProgramCache]: Analyzing trace with hash 515966444, now seen corresponding path program 1 times [2023-08-30 14:31:58,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:31:58,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581616702] [2023-08-30 14:31:58,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:58,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:31:58,774 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:31:58,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1983460020] [2023-08-30 14:31:58,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:58,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:58,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:31:58,783 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:31:58,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 14:31:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:31:59,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:31:59,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:31:59,200 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:31:59,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:31:59,257 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:31:59,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:31:59,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581616702] [2023-08-30 14:31:59,276 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:31:59,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983460020] [2023-08-30 14:31:59,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983460020] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:31:59,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 14:31:59,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-30 14:31:59,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573389553] [2023-08-30 14:31:59,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 14:31:59,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 14:31:59,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:31:59,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 14:31:59,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 14:31:59,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 547 [2023-08-30 14:31:59,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 216 flow. Second operand has 12 states, 12 states have (on average 241.33333333333334) internal successors, (2896), 12 states have internal predecessors, (2896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:31:59,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:31:59,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 547 [2023-08-30 14:31:59,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:32:00,618 INFO L130 PetriNetUnfolder]: 103/269 cut-off events. [2023-08-30 14:32:00,619 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 14:32:00,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 686 conditions, 269 events. 103/269 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1103 event pairs, 80 based on Foata normal form. 12/168 useless extension candidates. Maximal degree in co-relation 666. Up to 210 conditions per place. [2023-08-30 14:32:00,623 INFO L137 encePairwiseOnDemand]: 540/547 looper letters, 52 selfloop transitions, 14 changer transitions 0/70 dead transitions. [2023-08-30 14:32:00,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 70 transitions, 536 flow [2023-08-30 14:32:00,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:32:00,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:32:00,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2962 transitions. [2023-08-30 14:32:00,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.451249238269348 [2023-08-30 14:32:00,631 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2962 transitions. [2023-08-30 14:32:00,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2962 transitions. [2023-08-30 14:32:00,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:32:00,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2962 transitions. [2023-08-30 14:32:00,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 246.83333333333334) internal successors, (2962), 12 states have internal predecessors, (2962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:00,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 547.0) internal successors, (7111), 13 states have internal predecessors, (7111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:00,651 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 547.0) internal successors, (7111), 13 states have internal predecessors, (7111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:00,651 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 216 flow. Second operand 12 states and 2962 transitions. [2023-08-30 14:32:00,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 70 transitions, 536 flow [2023-08-30 14:32:00,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 70 transitions, 533 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:32:00,658 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 370 flow [2023-08-30 14:32:00,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=370, PETRI_PLACES=71, PETRI_TRANSITIONS=56} [2023-08-30 14:32:00,660 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 30 predicate places. [2023-08-30 14:32:00,660 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 370 flow [2023-08-30 14:32:00,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 241.33333333333334) internal successors, (2896), 12 states have internal predecessors, (2896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:00,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:32:00,662 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 2, 1, 1, 1] [2023-08-30 14:32:00,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 14:32:00,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:32:00,869 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:32:00,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:32:00,870 INFO L85 PathProgramCache]: Analyzing trace with hash -745801780, now seen corresponding path program 2 times [2023-08-30 14:32:00,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:32:00,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048354435] [2023-08-30 14:32:00,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:32:00,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:32:00,989 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:32:00,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644392209] [2023-08-30 14:32:00,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:32:00,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:32:00,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:32:00,991 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:32:01,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 14:32:01,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 14:32:01,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:32:01,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 2708 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 14:32:01,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:32:01,888 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:32:01,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:32:02,086 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:32:02,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:32:02,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048354435] [2023-08-30 14:32:02,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:32:02,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644392209] [2023-08-30 14:32:02,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644392209] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:32:02,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 14:32:02,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-30 14:32:02,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317215588] [2023-08-30 14:32:02,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 14:32:02,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 14:32:02,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:32:02,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 14:32:02,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-30 14:32:02,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 547 [2023-08-30 14:32:02,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 56 transitions, 370 flow. Second operand has 24 states, 24 states have (on average 241.16666666666666) internal successors, (5788), 24 states have internal predecessors, (5788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:02,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:32:02,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 547 [2023-08-30 14:32:02,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:32:04,405 INFO L130 PetriNetUnfolder]: 103/317 cut-off events. [2023-08-30 14:32:04,405 INFO L131 PetriNetUnfolder]: For 1224/1224 co-relation queries the response was YES. [2023-08-30 14:32:04,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1081 conditions, 317 events. 103/317 cut-off events. For 1224/1224 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1250 event pairs, 80 based on Foata normal form. 24/216 useless extension candidates. Maximal degree in co-relation 1053. Up to 210 conditions per place. [2023-08-30 14:32:04,410 INFO L137 encePairwiseOnDemand]: 540/547 looper letters, 76 selfloop transitions, 26 changer transitions 0/106 dead transitions. [2023-08-30 14:32:04,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 106 transitions, 1158 flow [2023-08-30 14:32:04,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 14:32:04,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 14:32:04,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5896 transitions. [2023-08-30 14:32:04,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44911639244363194 [2023-08-30 14:32:04,425 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5896 transitions. [2023-08-30 14:32:04,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5896 transitions. [2023-08-30 14:32:04,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:32:04,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5896 transitions. [2023-08-30 14:32:04,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 245.66666666666666) internal successors, (5896), 24 states have internal predecessors, (5896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:04,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 547.0) internal successors, (13675), 25 states have internal predecessors, (13675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:04,460 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 547.0) internal successors, (13675), 25 states have internal predecessors, (13675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:04,461 INFO L175 Difference]: Start difference. First operand has 71 places, 56 transitions, 370 flow. Second operand 24 states and 5896 transitions. [2023-08-30 14:32:04,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 106 transitions, 1158 flow [2023-08-30 14:32:04,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 106 transitions, 1085 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-08-30 14:32:04,466 INFO L231 Difference]: Finished difference. Result has 103 places, 70 transitions, 638 flow [2023-08-30 14:32:04,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=638, PETRI_PLACES=103, PETRI_TRANSITIONS=70} [2023-08-30 14:32:04,467 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 62 predicate places. [2023-08-30 14:32:04,467 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 70 transitions, 638 flow [2023-08-30 14:32:04,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 241.16666666666666) internal successors, (5788), 24 states have internal predecessors, (5788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:04,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:32:04,470 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 2, 1, 1, 1] [2023-08-30 14:32:04,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 14:32:04,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:32:04,680 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:32:04,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:32:04,681 INFO L85 PathProgramCache]: Analyzing trace with hash 832643980, now seen corresponding path program 3 times [2023-08-30 14:32:04,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:32:04,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980769580] [2023-08-30 14:32:04,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:32:04,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:32:04,929 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:32:04,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1743954575] [2023-08-30 14:32:04,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 14:32:04,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:32:04,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:32:04,931 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:32:04,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 14:32:05,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 14:32:05,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:32:05,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:32:05,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:32:05,923 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-08-30 14:32:05,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:32:05,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:32:05,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980769580] [2023-08-30 14:32:05,924 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:32:05,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743954575] [2023-08-30 14:32:05,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743954575] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:32:05,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:32:05,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:32:05,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668855109] [2023-08-30 14:32:05,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:32:05,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:32:05,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:32:05,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:32:05,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:32:05,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 547 [2023-08-30 14:32:05,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 70 transitions, 638 flow. Second operand has 6 states, 6 states have (on average 237.16666666666666) internal successors, (1423), 6 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:05,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:32:05,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 547 [2023-08-30 14:32:05,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:32:06,559 INFO L130 PetriNetUnfolder]: 102/294 cut-off events. [2023-08-30 14:32:06,559 INFO L131 PetriNetUnfolder]: For 583/583 co-relation queries the response was YES. [2023-08-30 14:32:06,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 991 conditions, 294 events. 102/294 cut-off events. For 583/583 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1051 event pairs, 80 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 949. Up to 248 conditions per place. [2023-08-30 14:32:06,561 INFO L137 encePairwiseOnDemand]: 541/547 looper letters, 80 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2023-08-30 14:32:06,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 88 transitions, 946 flow [2023-08-30 14:32:06,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:32:06,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:32:06,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1220 transitions. [2023-08-30 14:32:06,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460694698354662 [2023-08-30 14:32:06,565 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1220 transitions. [2023-08-30 14:32:06,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1220 transitions. [2023-08-30 14:32:06,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:32:06,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1220 transitions. [2023-08-30 14:32:06,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:06,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 547.0) internal successors, (3282), 6 states have internal predecessors, (3282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:06,573 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 547.0) internal successors, (3282), 6 states have internal predecessors, (3282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:06,573 INFO L175 Difference]: Start difference. First operand has 103 places, 70 transitions, 638 flow. Second operand 5 states and 1220 transitions. [2023-08-30 14:32:06,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 88 transitions, 946 flow [2023-08-30 14:32:06,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 88 transitions, 900 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-08-30 14:32:06,596 INFO L231 Difference]: Finished difference. Result has 96 places, 66 transitions, 530 flow [2023-08-30 14:32:06,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=530, PETRI_PLACES=96, PETRI_TRANSITIONS=66} [2023-08-30 14:32:06,597 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 55 predicate places. [2023-08-30 14:32:06,597 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 66 transitions, 530 flow [2023-08-30 14:32:06,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 237.16666666666666) internal successors, (1423), 6 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:06,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:32:06,598 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 2, 1, 1, 1] [2023-08-30 14:32:06,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 14:32:06,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:32:06,806 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:32:06,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:32:06,809 INFO L85 PathProgramCache]: Analyzing trace with hash 832644021, now seen corresponding path program 1 times [2023-08-30 14:32:06,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:32:06,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399215177] [2023-08-30 14:32:06,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:32:06,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:32:07,089 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:32:07,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1413959061] [2023-08-30 14:32:07,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:32:07,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:32:07,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:32:07,091 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:32:07,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 14:32:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:32:08,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 5516 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 14:32:08,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:32:09,055 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:32:09,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:32:09,425 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:32:09,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:32:09,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399215177] [2023-08-30 14:32:09,425 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:32:09,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413959061] [2023-08-30 14:32:09,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413959061] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:32:09,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 14:32:09,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2023-08-30 14:32:09,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144308637] [2023-08-30 14:32:09,426 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 14:32:09,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 14:32:09,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:32:09,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 14:32:09,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-08-30 14:32:09,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 547 [2023-08-30 14:32:09,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 66 transitions, 530 flow. Second operand has 32 states, 32 states have (on average 241.15625) internal successors, (7717), 32 states have internal predecessors, (7717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:09,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:32:09,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 547 [2023-08-30 14:32:09,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:32:11,797 INFO L130 PetriNetUnfolder]: 102/318 cut-off events. [2023-08-30 14:32:11,797 INFO L131 PetriNetUnfolder]: For 4601/4601 co-relation queries the response was YES. [2023-08-30 14:32:11,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1092 conditions, 318 events. 102/318 cut-off events. For 4601/4601 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1104 event pairs, 80 based on Foata normal form. 16/232 useless extension candidates. Maximal degree in co-relation 1048. Up to 209 conditions per place. [2023-08-30 14:32:11,799 INFO L137 encePairwiseOnDemand]: 542/547 looper letters, 62 selfloop transitions, 34 changer transitions 0/100 dead transitions. [2023-08-30 14:32:11,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 100 transitions, 1123 flow [2023-08-30 14:32:11,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 14:32:11,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 14:32:11,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 7789 transitions. [2023-08-30 14:32:11,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44498400365630714 [2023-08-30 14:32:11,815 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 7789 transitions. [2023-08-30 14:32:11,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 7789 transitions. [2023-08-30 14:32:11,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:32:11,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 7789 transitions. [2023-08-30 14:32:11,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 243.40625) internal successors, (7789), 32 states have internal predecessors, (7789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:11,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 547.0) internal successors, (18051), 33 states have internal predecessors, (18051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:11,855 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 547.0) internal successors, (18051), 33 states have internal predecessors, (18051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:11,856 INFO L175 Difference]: Start difference. First operand has 96 places, 66 transitions, 530 flow. Second operand 32 states and 7789 transitions. [2023-08-30 14:32:11,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 100 transitions, 1123 flow [2023-08-30 14:32:11,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 100 transitions, 1117 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 14:32:11,866 INFO L231 Difference]: Finished difference. Result has 133 places, 75 transitions, 729 flow [2023-08-30 14:32:11,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=729, PETRI_PLACES=133, PETRI_TRANSITIONS=75} [2023-08-30 14:32:11,866 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 92 predicate places. [2023-08-30 14:32:11,867 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 75 transitions, 729 flow [2023-08-30 14:32:11,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 241.15625) internal successors, (7717), 32 states have internal predecessors, (7717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:11,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:32:11,869 INFO L208 CegarLoopForPetriNet]: trace histogram [31, 2, 1, 1, 1] [2023-08-30 14:32:11,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 14:32:12,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:32:12,087 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:32:12,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:32:12,088 INFO L85 PathProgramCache]: Analyzing trace with hash -345278923, now seen corresponding path program 2 times [2023-08-30 14:32:12,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:32:12,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297699518] [2023-08-30 14:32:12,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:32:12,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:32:12,408 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:32:12,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [181225432] [2023-08-30 14:32:12,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:32:12,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:32:12,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:32:12,413 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:32:12,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 14:32:24,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 14:32:24,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:32:24,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 7388 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 14:32:24,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:32:24,522 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-08-30 14:32:24,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:32:24,713 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-08-30 14:32:24,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:32:24,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297699518] [2023-08-30 14:32:24,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:32:24,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181225432] [2023-08-30 14:32:24,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181225432] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:32:24,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 14:32:24,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-08-30 14:32:24,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542239559] [2023-08-30 14:32:24,714 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 14:32:24,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 14:32:24,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:32:24,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 14:32:24,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-08-30 14:32:24,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 547 [2023-08-30 14:32:24,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 75 transitions, 729 flow. Second operand has 10 states, 10 states have (on average 234.4) internal successors, (2344), 10 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:24,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:32:24,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 547 [2023-08-30 14:32:24,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:32:27,554 INFO L130 PetriNetUnfolder]: 201/570 cut-off events. [2023-08-30 14:32:27,554 INFO L131 PetriNetUnfolder]: For 1900/1900 co-relation queries the response was YES. [2023-08-30 14:32:27,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1857 conditions, 570 events. 201/570 cut-off events. For 1900/1900 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1932 event pairs, 160 based on Foata normal form. 32/400 useless extension candidates. Maximal degree in co-relation 1805. Up to 260 conditions per place. [2023-08-30 14:32:27,558 INFO L137 encePairwiseOnDemand]: 540/547 looper letters, 151 selfloop transitions, 11 changer transitions 0/166 dead transitions. [2023-08-30 14:32:27,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 166 transitions, 1836 flow [2023-08-30 14:32:27,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 14:32:27,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 14:32:27,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2641 transitions. [2023-08-30 14:32:27,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4389230513544956 [2023-08-30 14:32:27,564 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2641 transitions. [2023-08-30 14:32:27,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2641 transitions. [2023-08-30 14:32:27,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:32:27,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2641 transitions. [2023-08-30 14:32:27,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 240.0909090909091) internal successors, (2641), 11 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:27,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 547.0) internal successors, (6564), 12 states have internal predecessors, (6564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:27,578 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 547.0) internal successors, (6564), 12 states have internal predecessors, (6564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:27,578 INFO L175 Difference]: Start difference. First operand has 133 places, 75 transitions, 729 flow. Second operand 11 states and 2641 transitions. [2023-08-30 14:32:27,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 166 transitions, 1836 flow [2023-08-30 14:32:27,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 166 transitions, 1683 flow, removed 9 selfloop flow, removed 22 redundant places. [2023-08-30 14:32:27,607 INFO L231 Difference]: Finished difference. Result has 124 places, 80 transitions, 767 flow [2023-08-30 14:32:27,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=767, PETRI_PLACES=124, PETRI_TRANSITIONS=80} [2023-08-30 14:32:27,609 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 83 predicate places. [2023-08-30 14:32:27,609 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 80 transitions, 767 flow [2023-08-30 14:32:27,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 234.4) internal successors, (2344), 10 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:27,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:32:27,610 INFO L208 CegarLoopForPetriNet]: trace histogram [62, 3, 2, 1, 1] [2023-08-30 14:32:27,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 14:32:27,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-08-30 14:32:27,825 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:32:27,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:32:27,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1999051588, now seen corresponding path program 3 times [2023-08-30 14:32:27,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:32:27,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800206221] [2023-08-30 14:32:27,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:32:27,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:32:28,371 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:32:28,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1329549491] [2023-08-30 14:32:28,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 14:32:28,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:32:28,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:32:28,376 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:32:28,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 14:32:30,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 14:32:30,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:32:30,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:32:30,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:32:30,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2083 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 1894 trivial. 0 not checked. [2023-08-30 14:32:30,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:32:30,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:32:30,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800206221] [2023-08-30 14:32:30,750 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:32:30,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329549491] [2023-08-30 14:32:30,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329549491] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:32:30,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:32:30,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:32:30,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797528822] [2023-08-30 14:32:30,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:32:30,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:32:30,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:32:30,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:32:30,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:32:30,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 547 [2023-08-30 14:32:30,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 80 transitions, 767 flow. Second operand has 5 states, 5 states have (on average 238.6) internal successors, (1193), 5 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:30,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:32:30,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 547 [2023-08-30 14:32:30,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:32:31,238 INFO L130 PetriNetUnfolder]: 200/541 cut-off events. [2023-08-30 14:32:31,239 INFO L131 PetriNetUnfolder]: For 1876/1876 co-relation queries the response was YES. [2023-08-30 14:32:31,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1592 conditions, 541 events. 200/541 cut-off events. For 1876/1876 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1796 event pairs, 160 based on Foata normal form. 29/368 useless extension candidates. Maximal degree in co-relation 1535. Up to 405 conditions per place. [2023-08-30 14:32:31,243 INFO L137 encePairwiseOnDemand]: 543/547 looper letters, 58 selfloop transitions, 13 changer transitions 0/75 dead transitions. [2023-08-30 14:32:31,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 75 transitions, 826 flow [2023-08-30 14:32:31,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:32:31,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:32:31,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1220 transitions. [2023-08-30 14:32:31,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460694698354662 [2023-08-30 14:32:31,249 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1220 transitions. [2023-08-30 14:32:31,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1220 transitions. [2023-08-30 14:32:31,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:32:31,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1220 transitions. [2023-08-30 14:32:31,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:31,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 547.0) internal successors, (3282), 6 states have internal predecessors, (3282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:31,257 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 547.0) internal successors, (3282), 6 states have internal predecessors, (3282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:31,257 INFO L175 Difference]: Start difference. First operand has 124 places, 80 transitions, 767 flow. Second operand 5 states and 1220 transitions. [2023-08-30 14:32:31,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 75 transitions, 826 flow [2023-08-30 14:32:31,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 75 transitions, 601 flow, removed 85 selfloop flow, removed 14 redundant places. [2023-08-30 14:32:31,273 INFO L231 Difference]: Finished difference. Result has 113 places, 75 transitions, 485 flow [2023-08-30 14:32:31,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=485, PETRI_PLACES=113, PETRI_TRANSITIONS=75} [2023-08-30 14:32:31,275 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 72 predicate places. [2023-08-30 14:32:31,275 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 75 transitions, 485 flow [2023-08-30 14:32:31,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 238.6) internal successors, (1193), 5 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:31,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:32:31,276 INFO L208 CegarLoopForPetriNet]: trace histogram [60, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:32:31,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 14:32:31,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 14:32:31,497 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:32:31,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:32:31,498 INFO L85 PathProgramCache]: Analyzing trace with hash 2000132792, now seen corresponding path program 1 times [2023-08-30 14:32:31,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:32:31,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825865802] [2023-08-30 14:32:31,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:32:31,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:32:32,072 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:32:32,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [106742695] [2023-08-30 14:32:32,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:32:32,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:32:32,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:32:32,081 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:32:32,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 14:32:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:32:36,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 14208 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:32:36,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:32:36,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2023-08-30 14:32:36,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:32:36,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2023-08-30 14:32:36,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:32:36,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825865802] [2023-08-30 14:32:36,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:32:36,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106742695] [2023-08-30 14:32:36,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106742695] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:32:36,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 14:32:36,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-08-30 14:32:36,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504015040] [2023-08-30 14:32:36,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 14:32:36,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 14:32:36,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:32:36,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 14:32:36,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-08-30 14:32:36,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 547 [2023-08-30 14:32:36,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 75 transitions, 485 flow. Second operand has 8 states, 8 states have (on average 242.375) internal successors, (1939), 8 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:36,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:32:36,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 547 [2023-08-30 14:32:36,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:32:37,762 INFO L130 PetriNetUnfolder]: 105/420 cut-off events. [2023-08-30 14:32:37,763 INFO L131 PetriNetUnfolder]: For 2999/2999 co-relation queries the response was YES. [2023-08-30 14:32:37,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 420 events. 105/420 cut-off events. For 2999/2999 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 853 event pairs, 80 based on Foata normal form. 4/323 useless extension candidates. Maximal degree in co-relation 1255. Up to 202 conditions per place. [2023-08-30 14:32:37,766 INFO L137 encePairwiseOnDemand]: 543/547 looper letters, 220 selfloop transitions, 8 changer transitions 0/232 dead transitions. [2023-08-30 14:32:37,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 232 transitions, 1805 flow [2023-08-30 14:32:37,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 14:32:37,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 14:32:37,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1972 transitions. [2023-08-30 14:32:37,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506398537477148 [2023-08-30 14:32:37,769 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1972 transitions. [2023-08-30 14:32:37,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1972 transitions. [2023-08-30 14:32:37,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:32:37,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1972 transitions. [2023-08-30 14:32:37,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 246.5) internal successors, (1972), 8 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:37,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 547.0) internal successors, (4923), 9 states have internal predecessors, (4923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:37,776 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 547.0) internal successors, (4923), 9 states have internal predecessors, (4923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:37,776 INFO L175 Difference]: Start difference. First operand has 113 places, 75 transitions, 485 flow. Second operand 8 states and 1972 transitions. [2023-08-30 14:32:37,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 232 transitions, 1805 flow [2023-08-30 14:32:37,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 232 transitions, 1745 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-30 14:32:37,788 INFO L231 Difference]: Finished difference. Result has 121 places, 79 transitions, 690 flow [2023-08-30 14:32:37,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=690, PETRI_PLACES=121, PETRI_TRANSITIONS=79} [2023-08-30 14:32:37,789 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 80 predicate places. [2023-08-30 14:32:37,789 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 79 transitions, 690 flow [2023-08-30 14:32:37,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.375) internal successors, (1939), 8 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:37,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:32:37,790 INFO L208 CegarLoopForPetriNet]: trace histogram [180, 6, 6, 1, 1, 1, 1, 1] [2023-08-30 14:32:37,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 14:32:38,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-30 14:32:38,005 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:32:38,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:32:38,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1008093809, now seen corresponding path program 1 times [2023-08-30 14:32:38,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:32:38,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688241255] [2023-08-30 14:32:38,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:32:38,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:32:39,714 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:32:39,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1871010503] [2023-08-30 14:32:39,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:32:39,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:32:39,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:32:39,721 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:32:39,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 14:32:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:32:51,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 42448 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 14:32:51,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:32:51,358 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 14436 refuted. 0 times theorem prover too weak. 2790 trivial. 0 not checked. [2023-08-30 14:32:51,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:32:51,710 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 14436 refuted. 0 times theorem prover too weak. 2790 trivial. 0 not checked. [2023-08-30 14:32:51,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:32:51,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688241255] [2023-08-30 14:32:51,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:32:51,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871010503] [2023-08-30 14:32:51,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871010503] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:32:51,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 14:32:51,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-08-30 14:32:51,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484554057] [2023-08-30 14:32:51,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 14:32:51,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 14:32:51,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:32:51,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 14:32:51,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 14:32:51,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 547 [2023-08-30 14:32:51,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 79 transitions, 690 flow. Second operand has 12 states, 12 states have (on average 242.83333333333334) internal successors, (2914), 12 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:51,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:32:51,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 547 [2023-08-30 14:32:51,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:32:52,987 INFO L130 PetriNetUnfolder]: 109/552 cut-off events. [2023-08-30 14:32:52,987 INFO L131 PetriNetUnfolder]: For 5361/5361 co-relation queries the response was YES. [2023-08-30 14:32:52,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1844 conditions, 552 events. 109/552 cut-off events. For 5361/5361 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 857 event pairs, 80 based on Foata normal form. 4/455 useless extension candidates. Maximal degree in co-relation 1793. Up to 202 conditions per place. [2023-08-30 14:32:52,991 INFO L137 encePairwiseOnDemand]: 543/547 looper letters, 348 selfloop transitions, 12 changer transitions 0/364 dead transitions. [2023-08-30 14:32:52,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 364 transitions, 2883 flow [2023-08-30 14:32:52,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:32:52,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:32:52,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2944 transitions. [2023-08-30 14:32:52,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44850700792199877 [2023-08-30 14:32:52,994 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2944 transitions. [2023-08-30 14:32:52,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2944 transitions. [2023-08-30 14:32:52,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:32:52,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2944 transitions. [2023-08-30 14:32:52,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 245.33333333333334) internal successors, (2944), 12 states have internal predecessors, (2944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:53,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 547.0) internal successors, (7111), 13 states have internal predecessors, (7111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:53,005 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 547.0) internal successors, (7111), 13 states have internal predecessors, (7111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:53,005 INFO L175 Difference]: Start difference. First operand has 121 places, 79 transitions, 690 flow. Second operand 12 states and 2944 transitions. [2023-08-30 14:32:53,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 364 transitions, 2883 flow [2023-08-30 14:32:53,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 364 transitions, 2879 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:32:53,022 INFO L231 Difference]: Finished difference. Result has 135 places, 84 transitions, 1012 flow [2023-08-30 14:32:53,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1012, PETRI_PLACES=135, PETRI_TRANSITIONS=84} [2023-08-30 14:32:53,023 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 94 predicate places. [2023-08-30 14:32:53,023 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 84 transitions, 1012 flow [2023-08-30 14:32:53,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 242.83333333333334) internal successors, (2914), 12 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:53,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:32:53,024 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1] [2023-08-30 14:32:53,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 14:32:53,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-30 14:32:53,249 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:32:53,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:32:53,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1480686121, now seen corresponding path program 2 times [2023-08-30 14:32:53,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:32:53,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975265694] [2023-08-30 14:32:53,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:32:53,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:32:55,848 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:32:55,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1671371508] [2023-08-30 14:32:55,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:32:55,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:32:55,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:32:55,850 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:32:55,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 14:33:05,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:33:05,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:33:05,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:33:05,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:33:05,840 INFO L134 CoverageAnalysis]: Checked inductivity of 47950 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47950 trivial. 0 not checked. [2023-08-30 14:33:05,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:33:05,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:33:05,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975265694] [2023-08-30 14:33:05,841 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:33:05,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671371508] [2023-08-30 14:33:05,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671371508] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:33:05,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:33:05,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:33:05,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320598822] [2023-08-30 14:33:05,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:33:05,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:33:05,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:33:05,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:33:05,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:33:05,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 547 [2023-08-30 14:33:05,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 84 transitions, 1012 flow. Second operand has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:33:05,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:33:05,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 547 [2023-08-30 14:33:05,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:33:06,428 INFO L130 PetriNetUnfolder]: 88/507 cut-off events. [2023-08-30 14:33:06,428 INFO L131 PetriNetUnfolder]: For 5781/5781 co-relation queries the response was YES. [2023-08-30 14:33:06,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1792 conditions, 507 events. 88/507 cut-off events. For 5781/5781 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 707 event pairs, 32 based on Foata normal form. 0/432 useless extension candidates. Maximal degree in co-relation 1735. Up to 406 conditions per place. [2023-08-30 14:33:06,432 INFO L137 encePairwiseOnDemand]: 542/547 looper letters, 95 selfloop transitions, 3 changer transitions 0/102 dead transitions. [2023-08-30 14:33:06,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 102 transitions, 1244 flow [2023-08-30 14:33:06,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:33:06,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:33:06,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 772 transitions. [2023-08-30 14:33:06,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4704448507007922 [2023-08-30 14:33:06,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 772 transitions. [2023-08-30 14:33:06,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 772 transitions. [2023-08-30 14:33:06,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:33:06,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 772 transitions. [2023-08-30 14:33:06,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:33:06,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:33:06,437 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:33:06,437 INFO L175 Difference]: Start difference. First operand has 135 places, 84 transitions, 1012 flow. Second operand 3 states and 772 transitions. [2023-08-30 14:33:06,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 102 transitions, 1244 flow [2023-08-30 14:33:06,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 102 transitions, 1234 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 14:33:06,454 INFO L231 Difference]: Finished difference. Result has 133 places, 84 transitions, 1018 flow [2023-08-30 14:33:06,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1018, PETRI_PLACES=133, PETRI_TRANSITIONS=84} [2023-08-30 14:33:06,454 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 92 predicate places. [2023-08-30 14:33:06,455 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 84 transitions, 1018 flow [2023-08-30 14:33:06,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:33:06,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:33:06,455 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1] [2023-08-30 14:33:06,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 14:33:06,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-30 14:33:06,669 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:33:06,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:33:06,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1480686120, now seen corresponding path program 2 times [2023-08-30 14:33:06,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:33:06,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707889830] [2023-08-30 14:33:06,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:33:06,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:33:09,274 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:33:09,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2110820732] [2023-08-30 14:33:09,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:33:09,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:33:09,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:33:09,277 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:33:09,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 14:33:21,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:33:21,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:33:21,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:33:21,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:33:21,649 INFO L134 CoverageAnalysis]: Checked inductivity of 47950 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47950 trivial. 0 not checked. [2023-08-30 14:33:21,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:33:21,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:33:21,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707889830] [2023-08-30 14:33:21,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:33:21,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110820732] [2023-08-30 14:33:21,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110820732] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:33:21,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:33:21,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:33:21,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460047134] [2023-08-30 14:33:21,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:33:21,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:33:21,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:33:21,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:33:21,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:33:21,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 547 [2023-08-30 14:33:21,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 84 transitions, 1018 flow. Second operand has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:33:21,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:33:21,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 547 [2023-08-30 14:33:21,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:33:22,178 INFO L130 PetriNetUnfolder]: 68/481 cut-off events. [2023-08-30 14:33:22,179 INFO L131 PetriNetUnfolder]: For 5684/5684 co-relation queries the response was YES. [2023-08-30 14:33:22,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1831 conditions, 481 events. 68/481 cut-off events. For 5684/5684 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 681 event pairs, 0 based on Foata normal form. 17/465 useless extension candidates. Maximal degree in co-relation 1773. Up to 441 conditions per place. [2023-08-30 14:33:22,182 INFO L137 encePairwiseOnDemand]: 544/547 looper letters, 95 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2023-08-30 14:33:22,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 101 transitions, 1246 flow [2023-08-30 14:33:22,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:33:22,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:33:22,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 773 transitions. [2023-08-30 14:33:22,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47105423522242534 [2023-08-30 14:33:22,184 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 773 transitions. [2023-08-30 14:33:22,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 773 transitions. [2023-08-30 14:33:22,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:33:22,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 773 transitions. [2023-08-30 14:33:22,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:33:22,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:33:22,187 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:33:22,187 INFO L175 Difference]: Start difference. First operand has 133 places, 84 transitions, 1018 flow. Second operand 3 states and 773 transitions. [2023-08-30 14:33:22,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 101 transitions, 1246 flow [2023-08-30 14:33:22,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 101 transitions, 1240 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:33:22,203 INFO L231 Difference]: Finished difference. Result has 132 places, 83 transitions, 1014 flow [2023-08-30 14:33:22,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1014, PETRI_PLACES=132, PETRI_TRANSITIONS=83} [2023-08-30 14:33:22,204 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 91 predicate places. [2023-08-30 14:33:22,204 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 83 transitions, 1014 flow [2023-08-30 14:33:22,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:33:22,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:33:22,205 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 2, 1, 1, 1, 1, 1] [2023-08-30 14:33:22,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 14:33:22,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 14:33:22,421 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:33:22,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:33:22,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1305214873, now seen corresponding path program 1 times [2023-08-30 14:33:22,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:33:22,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716958852] [2023-08-30 14:33:22,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:33:22,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:33:25,097 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:33:25,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1545789278] [2023-08-30 14:33:25,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:33:25,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:33:25,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:33:25,105 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:33:25,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process Killed by 15