./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_08-cond_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_08-cond_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 b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --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 14:07:21,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:07:21,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:07:21,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:07:21,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:07:21,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:07:21,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:07:21,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:07:21,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:07:21,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:07:21,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:07:21,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:07:21,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:07:21,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:07:21,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:07:21,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:07:21,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:07:21,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:07:21,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:07:21,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:07:21,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:07:21,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:07:21,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:07:21,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:07:21,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:07:21,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:07:21,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:07:21,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:07:21,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:07:21,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:07:21,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:07:21,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:07:21,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:07:21,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:07:21,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:07:21,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:07:21,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:07:21,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:07:21,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:07:21,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:07:21,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:07:21,729 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:07:21,756 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:07:21,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:07:21,757 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:07:21,757 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:07:21,757 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:07:21,758 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:07:21,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:07:21,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:07:21,758 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:07:21,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:07:21,759 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:07:21,759 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:07:21,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:07:21,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:07:21,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:07:21,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:07:21,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:07:21,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:07:21,760 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:07:21,760 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:07:21,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:07:21,760 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:07:21,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:07:21,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:07:21,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:07:21,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:07:21,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:07:21,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:07:21,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:07:21,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:07:21,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:07:21,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:07:21,762 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:07:21,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:07:21,762 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:07:21,762 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:07:21,762 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:07:21,763 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:07:21,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:07:21,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:07:21,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:07:21,999 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:07:21,999 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:07:22,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_08-cond_racefree.i [2023-08-30 14:07:22,913 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:07:23,184 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:07:23,190 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_08-cond_racefree.i [2023-08-30 14:07:23,214 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8cc1920a/065cfc79bc904a5596a62b1d576b37d0/FLAGd45db7f03 [2023-08-30 14:07:23,226 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8cc1920a/065cfc79bc904a5596a62b1d576b37d0 [2023-08-30 14:07:23,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:07:23,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:07:23,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:07:23,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:07:23,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:07:23,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:07:23" (1/1) ... [2023-08-30 14:07:23,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d1a275b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:07:23, skipping insertion in model container [2023-08-30 14:07:23,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:07:23" (1/1) ... [2023-08-30 14:07:23,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:07:23,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:07:23,586 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_08-cond_racefree.i[41322,41335] [2023-08-30 14:07:23,603 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:07:23,619 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:07:23,653 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_08-cond_racefree.i[41322,41335] [2023-08-30 14:07:23,668 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:07:23,725 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:07:23,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:07:23 WrapperNode [2023-08-30 14:07:23,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:07:23,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:07:23,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:07:23,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:07:23,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:07:23" (1/1) ... [2023-08-30 14:07:23,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:07:23" (1/1) ... [2023-08-30 14:07:23,783 INFO L138 Inliner]: procedures = 270, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 94 [2023-08-30 14:07:23,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:07:23,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:07:23,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:07:23,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:07:23,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:07:23" (1/1) ... [2023-08-30 14:07:23,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:07:23" (1/1) ... [2023-08-30 14:07:23,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:07:23" (1/1) ... [2023-08-30 14:07:23,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:07:23" (1/1) ... [2023-08-30 14:07:23,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:07:23" (1/1) ... [2023-08-30 14:07:23,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:07:23" (1/1) ... [2023-08-30 14:07:23,813 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:07:23" (1/1) ... [2023-08-30 14:07:23,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:07:23" (1/1) ... [2023-08-30 14:07:23,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:07:23,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:07:23,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:07:23,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:07:23,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:07:23" (1/1) ... [2023-08-30 14:07:23,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:07:23,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:07:23,878 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 14:07:23,918 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 14:07:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:07:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:07:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:07:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:07:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:07:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:07:23,938 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:07:23,938 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:07:23,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:07:23,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:07:23,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:07:23,939 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 14:07:24,063 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:07:24,077 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:07:24,242 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:07:24,247 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:07:24,247 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-30 14:07:24,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:07:24 BoogieIcfgContainer [2023-08-30 14:07:24,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:07:24,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:07:24,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:07:24,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:07:24,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:07:23" (1/3) ... [2023-08-30 14:07:24,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f7849be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:07:24, skipping insertion in model container [2023-08-30 14:07:24,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:07:23" (2/3) ... [2023-08-30 14:07:24,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f7849be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:07:24, skipping insertion in model container [2023-08-30 14:07:24,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:07:24" (3/3) ... [2023-08-30 14:07:24,254 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2023-08-30 14:07:24,258 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:07:24,266 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:07:24,266 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 14:07:24,266 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:07:24,335 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:07:24,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 136 transitions, 280 flow [2023-08-30 14:07:24,436 INFO L130 PetriNetUnfolder]: 23/177 cut-off events. [2023-08-30 14:07:24,438 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:07:24,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 177 events. 23/177 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 402 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2023-08-30 14:07:24,448 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 136 transitions, 280 flow [2023-08-30 14:07:24,452 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 133 transitions, 274 flow [2023-08-30 14:07:24,454 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:07:24,461 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 133 transitions, 274 flow [2023-08-30 14:07:24,470 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 133 transitions, 274 flow [2023-08-30 14:07:24,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 133 transitions, 274 flow [2023-08-30 14:07:24,512 INFO L130 PetriNetUnfolder]: 22/174 cut-off events. [2023-08-30 14:07:24,518 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:07:24,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 174 events. 22/174 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 404 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2023-08-30 14:07:24,522 INFO L119 LiptonReduction]: Number of co-enabled transitions 3672 [2023-08-30 14:07:27,157 INFO L134 LiptonReduction]: Checked pairs total: 6410 [2023-08-30 14:07:27,157 INFO L136 LiptonReduction]: Total number of compositions: 124 [2023-08-30 14:07:27,167 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:07:27,171 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;@78e744f4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:07:27,171 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-30 14:07:27,173 INFO L130 PetriNetUnfolder]: 1/9 cut-off events. [2023-08-30 14:07:27,173 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:07:27,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:07:27,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:07:27,174 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 14:07:27,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:07:27,177 INFO L85 PathProgramCache]: Analyzing trace with hash 16205841, now seen corresponding path program 1 times [2023-08-30 14:07:27,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:07:27,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359568105] [2023-08-30 14:07:27,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:07:27,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:07:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:07:27,409 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 14:07:27,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:07:27,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359568105] [2023-08-30 14:07:27,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359568105] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:07:27,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:07:27,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:07:27,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318014585] [2023-08-30 14:07:27,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:07:27,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:07:27,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:07:27,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:07:27,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:07:27,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 260 [2023-08-30 14:07:27,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 42 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 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 14:07:27,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:07:27,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 260 [2023-08-30 14:07:27,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:07:27,504 INFO L130 PetriNetUnfolder]: 145/320 cut-off events. [2023-08-30 14:07:27,504 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:07:27,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 320 events. 145/320 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1682 event pairs, 0 based on Foata normal form. 25/244 useless extension candidates. Maximal degree in co-relation 601. Up to 292 conditions per place. [2023-08-30 14:07:27,507 INFO L137 encePairwiseOnDemand]: 245/260 looper letters, 40 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-08-30 14:07:27,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 180 flow [2023-08-30 14:07:27,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:07:27,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:07:27,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 415 transitions. [2023-08-30 14:07:27,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532051282051282 [2023-08-30 14:07:27,517 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 415 transitions. [2023-08-30 14:07:27,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 415 transitions. [2023-08-30 14:07:27,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:07:27,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 415 transitions. [2023-08-30 14:07:27,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 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 14:07:27,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 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 14:07:27,530 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 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 14:07:27,532 INFO L175 Difference]: Start difference. First operand has 35 places, 42 transitions, 92 flow. Second operand 3 states and 415 transitions. [2023-08-30 14:07:27,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 180 flow [2023-08-30 14:07:27,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:07:27,535 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 80 flow [2023-08-30 14:07:27,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-08-30 14:07:27,538 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-08-30 14:07:27,538 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 80 flow [2023-08-30 14:07:27,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 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 14:07:27,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:07:27,539 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 14:07:27,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:07:27,539 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 14:07:27,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:07:27,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1606021418, now seen corresponding path program 1 times [2023-08-30 14:07:27,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:07:27,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722212242] [2023-08-30 14:07:27,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:07:27,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:07:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:07:27,555 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:07:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:07:27,600 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:07:27,600 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:07:27,601 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-08-30 14:07:27,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-30 14:07:27,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-30 14:07:27,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-30 14:07:27,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-08-30 14:07:27,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-08-30 14:07:27,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-08-30 14:07:27,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-08-30 14:07:27,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-08-30 14:07:27,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-08-30 14:07:27,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-30 14:07:27,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-30 14:07:27,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-30 14:07:27,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:07:27,605 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-30 14:07:27,606 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:07:27,607 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:07:27,620 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:07:27,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 174 transitions, 366 flow [2023-08-30 14:07:27,641 INFO L130 PetriNetUnfolder]: 40/292 cut-off events. [2023-08-30 14:07:27,641 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:07:27,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 292 events. 40/292 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 844 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 179. Up to 9 conditions per place. [2023-08-30 14:07:27,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 174 transitions, 366 flow [2023-08-30 14:07:27,644 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 174 transitions, 366 flow [2023-08-30 14:07:27,644 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:07:27,644 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 174 transitions, 366 flow [2023-08-30 14:07:27,645 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 174 transitions, 366 flow [2023-08-30 14:07:27,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 174 transitions, 366 flow [2023-08-30 14:07:27,661 INFO L130 PetriNetUnfolder]: 40/292 cut-off events. [2023-08-30 14:07:27,661 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:07:27,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 292 events. 40/292 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 844 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 179. Up to 9 conditions per place. [2023-08-30 14:07:27,667 INFO L119 LiptonReduction]: Number of co-enabled transitions 11304 [2023-08-30 14:07:30,315 INFO L134 LiptonReduction]: Checked pairs total: 30056 [2023-08-30 14:07:30,319 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-08-30 14:07:30,323 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:07:30,325 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;@78e744f4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:07:30,326 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-30 14:07:30,341 INFO L130 PetriNetUnfolder]: 2/15 cut-off events. [2023-08-30 14:07:30,341 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:07:30,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:07:30,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:07:30,342 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:07:30,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:07:30,343 INFO L85 PathProgramCache]: Analyzing trace with hash 839433586, now seen corresponding path program 1 times [2023-08-30 14:07:30,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:07:30,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629467878] [2023-08-30 14:07:30,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:07:30,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:07:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:07:30,395 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 14:07:30,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:07:30,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629467878] [2023-08-30 14:07:30,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629467878] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:07:30,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:07:30,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:07:30,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233641972] [2023-08-30 14:07:30,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:07:30,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:07:30,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:07:30,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:07:30,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:07:30,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 315 [2023-08-30 14:07:30,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 70 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 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 14:07:30,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:07:30,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 315 [2023-08-30 14:07:30,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:07:30,949 INFO L130 PetriNetUnfolder]: 6206/9877 cut-off events. [2023-08-30 14:07:30,949 INFO L131 PetriNetUnfolder]: For 86/86 co-relation queries the response was YES. [2023-08-30 14:07:30,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19669 conditions, 9877 events. 6206/9877 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 61971 event pairs, 2814 based on Foata normal form. 681/7245 useless extension candidates. Maximal degree in co-relation 2110. Up to 9663 conditions per place. [2023-08-30 14:07:30,983 INFO L137 encePairwiseOnDemand]: 294/315 looper letters, 64 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-08-30 14:07:30,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 71 transitions, 292 flow [2023-08-30 14:07:30,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:07:30,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:07:30,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 535 transitions. [2023-08-30 14:07:30,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5661375661375662 [2023-08-30 14:07:30,988 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 535 transitions. [2023-08-30 14:07:30,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 535 transitions. [2023-08-30 14:07:30,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:07:30,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 535 transitions. [2023-08-30 14:07:30,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 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 14:07:30,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 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 14:07:30,993 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 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 14:07:30,993 INFO L175 Difference]: Start difference. First operand has 57 places, 70 transitions, 158 flow. Second operand 3 states and 535 transitions. [2023-08-30 14:07:30,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 71 transitions, 292 flow [2023-08-30 14:07:30,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 71 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:07:30,996 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 146 flow [2023-08-30 14:07:30,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-08-30 14:07:30,997 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 3 predicate places. [2023-08-30 14:07:30,997 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 146 flow [2023-08-30 14:07:30,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 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 14:07:30,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:07:30,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:07:30,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:07:30,998 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:07:30,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:07:30,998 INFO L85 PathProgramCache]: Analyzing trace with hash -750768874, now seen corresponding path program 1 times [2023-08-30 14:07:30,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:07:30,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936489278] [2023-08-30 14:07:30,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:07:30,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:07:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:07:31,075 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 14:07:31,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:07:31,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936489278] [2023-08-30 14:07:31,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936489278] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:07:31,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:07:31,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:07:31,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696167304] [2023-08-30 14:07:31,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:07:31,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:07:31,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:07:31,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:07:31,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:07:31,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 315 [2023-08-30 14:07:31,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 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 14:07:31,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:07:31,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 315 [2023-08-30 14:07:31,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:07:31,618 INFO L130 PetriNetUnfolder]: 5596/8840 cut-off events. [2023-08-30 14:07:31,619 INFO L131 PetriNetUnfolder]: For 526/526 co-relation queries the response was YES. [2023-08-30 14:07:31,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18766 conditions, 8840 events. 5596/8840 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 53673 event pairs, 2077 based on Foata normal form. 0/6289 useless extension candidates. Maximal degree in co-relation 18673. Up to 8160 conditions per place. [2023-08-30 14:07:31,654 INFO L137 encePairwiseOnDemand]: 307/315 looper letters, 71 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2023-08-30 14:07:31,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 79 transitions, 358 flow [2023-08-30 14:07:31,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:07:31,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:07:31,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 518 transitions. [2023-08-30 14:07:31,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5481481481481482 [2023-08-30 14:07:31,656 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 518 transitions. [2023-08-30 14:07:31,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 518 transitions. [2023-08-30 14:07:31,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:07:31,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 518 transitions. [2023-08-30 14:07:31,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 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 14:07:31,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 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 14:07:31,660 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 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 14:07:31,660 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 146 flow. Second operand 3 states and 518 transitions. [2023-08-30 14:07:31,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 79 transitions, 358 flow [2023-08-30 14:07:31,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 79 transitions, 355 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:07:31,662 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 171 flow [2023-08-30 14:07:31,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2023-08-30 14:07:31,663 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 5 predicate places. [2023-08-30 14:07:31,663 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 171 flow [2023-08-30 14:07:31,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 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 14:07:31,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:07:31,664 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:07:31,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:07:31,664 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:07:31,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:07:31,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1596842236, now seen corresponding path program 1 times [2023-08-30 14:07:31,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:07:31,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827085995] [2023-08-30 14:07:31,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:07:31,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:07:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:07:31,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:07:31,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:07:31,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827085995] [2023-08-30 14:07:31,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827085995] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:07:31,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:07:31,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:07:31,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877733978] [2023-08-30 14:07:31,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:07:31,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:07:31,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:07:31,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:07:31,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:07:31,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 315 [2023-08-30 14:07:31,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 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 14:07:31,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:07:31,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 315 [2023-08-30 14:07:31,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:07:32,165 INFO L130 PetriNetUnfolder]: 5216/8235 cut-off events. [2023-08-30 14:07:32,166 INFO L131 PetriNetUnfolder]: For 813/813 co-relation queries the response was YES. [2023-08-30 14:07:32,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18512 conditions, 8235 events. 5216/8235 cut-off events. For 813/813 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 52273 event pairs, 933 based on Foata normal form. 0/6438 useless extension candidates. Maximal degree in co-relation 12597. Up to 6576 conditions per place. [2023-08-30 14:07:32,194 INFO L137 encePairwiseOnDemand]: 311/315 looper letters, 79 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2023-08-30 14:07:32,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 88 transitions, 413 flow [2023-08-30 14:07:32,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:07:32,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:07:32,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2023-08-30 14:07:32,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5502645502645502 [2023-08-30 14:07:32,196 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2023-08-30 14:07:32,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2023-08-30 14:07:32,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:07:32,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2023-08-30 14:07:32,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 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 14:07:32,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 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 14:07:32,200 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 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 14:07:32,200 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 171 flow. Second operand 3 states and 520 transitions. [2023-08-30 14:07:32,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 88 transitions, 413 flow [2023-08-30 14:07:32,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 88 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:07:32,204 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 180 flow [2023-08-30 14:07:32,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2023-08-30 14:07:32,205 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 6 predicate places. [2023-08-30 14:07:32,206 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 180 flow [2023-08-30 14:07:32,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 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 14:07:32,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:07:32,206 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:07:32,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:07:32,206 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:07:32,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:07:32,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1596842200, now seen corresponding path program 1 times [2023-08-30 14:07:32,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:07:32,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019614078] [2023-08-30 14:07:32,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:07:32,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:07:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:07:32,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:07:32,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:07:32,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019614078] [2023-08-30 14:07:32,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019614078] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:07:32,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:07:32,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:07:32,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789870769] [2023-08-30 14:07:32,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:07:32,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:07:32,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:07:32,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:07:32,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:07:32,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 315 [2023-08-30 14:07:32,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 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 14:07:32,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:07:32,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 315 [2023-08-30 14:07:32,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:07:32,685 INFO L130 PetriNetUnfolder]: 4836/7670 cut-off events. [2023-08-30 14:07:32,686 INFO L131 PetriNetUnfolder]: For 2578/2578 co-relation queries the response was YES. [2023-08-30 14:07:32,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17645 conditions, 7670 events. 4836/7670 cut-off events. For 2578/2578 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 44170 event pairs, 4494 based on Foata normal form. 205/6342 useless extension candidates. Maximal degree in co-relation 11962. Up to 7593 conditions per place. [2023-08-30 14:07:32,717 INFO L137 encePairwiseOnDemand]: 313/315 looper letters, 51 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2023-08-30 14:07:32,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 57 transitions, 280 flow [2023-08-30 14:07:32,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:07:32,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:07:32,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 493 transitions. [2023-08-30 14:07:32,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216931216931217 [2023-08-30 14:07:32,719 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 493 transitions. [2023-08-30 14:07:32,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 493 transitions. [2023-08-30 14:07:32,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:07:32,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 493 transitions. [2023-08-30 14:07:32,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 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 14:07:32,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 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 14:07:32,722 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 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 14:07:32,722 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 180 flow. Second operand 3 states and 493 transitions. [2023-08-30 14:07:32,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 57 transitions, 280 flow [2023-08-30 14:07:32,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 57 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:07:32,724 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 174 flow [2023-08-30 14:07:32,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-08-30 14:07:32,725 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 6 predicate places. [2023-08-30 14:07:32,725 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 174 flow [2023-08-30 14:07:32,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 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 14:07:32,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:07:32,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:07:32,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:07:32,726 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:07:32,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:07:32,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1343910743, now seen corresponding path program 1 times [2023-08-30 14:07:32,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:07:32,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266309420] [2023-08-30 14:07:32,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:07:32,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:07:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:07:32,762 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 14:07:32,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:07:32,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266309420] [2023-08-30 14:07:32,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266309420] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:07:32,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:07:32,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:07:32,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6744138] [2023-08-30 14:07:32,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:07:32,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:07:32,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:07:32,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:07:32,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:07:32,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 315 [2023-08-30 14:07:32,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 0 states have call successors, (0), 0 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 14:07:32,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:07:32,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 315 [2023-08-30 14:07:32,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:07:33,335 INFO L130 PetriNetUnfolder]: 6019/9614 cut-off events. [2023-08-30 14:07:33,336 INFO L131 PetriNetUnfolder]: For 2133/2133 co-relation queries the response was YES. [2023-08-30 14:07:33,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21709 conditions, 9614 events. 6019/9614 cut-off events. For 2133/2133 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 60097 event pairs, 929 based on Foata normal form. 0/7909 useless extension candidates. Maximal degree in co-relation 21695. Up to 5273 conditions per place. [2023-08-30 14:07:33,361 INFO L137 encePairwiseOnDemand]: 300/315 looper letters, 170 selfloop transitions, 19 changer transitions 0/194 dead transitions. [2023-08-30 14:07:33,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 194 transitions, 948 flow [2023-08-30 14:07:33,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:07:33,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:07:33,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1190 transitions. [2023-08-30 14:07:33,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2023-08-30 14:07:33,364 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1190 transitions. [2023-08-30 14:07:33,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1190 transitions. [2023-08-30 14:07:33,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:07:33,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1190 transitions. [2023-08-30 14:07:33,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 170.0) internal successors, (1190), 7 states have internal predecessors, (1190), 0 states have call successors, (0), 0 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 14:07:33,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 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 14:07:33,370 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 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 14:07:33,370 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 174 flow. Second operand 7 states and 1190 transitions. [2023-08-30 14:07:33,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 194 transitions, 948 flow [2023-08-30 14:07:33,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 194 transitions, 947 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:07:33,373 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 332 flow [2023-08-30 14:07:33,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=332, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2023-08-30 14:07:33,374 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2023-08-30 14:07:33,374 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 332 flow [2023-08-30 14:07:33,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 0 states have call successors, (0), 0 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 14:07:33,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:07:33,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:07:33,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:07:33,375 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:07:33,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:07:33,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1343910810, now seen corresponding path program 1 times [2023-08-30 14:07:33,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:07:33,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932907663] [2023-08-30 14:07:33,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:07:33,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:07:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:07:33,427 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 14:07:33,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:07:33,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932907663] [2023-08-30 14:07:33,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932907663] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:07:33,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:07:33,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:07:33,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557670795] [2023-08-30 14:07:33,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:07:33,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:07:33,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:07:33,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:07:33,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:07:33,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 315 [2023-08-30 14:07:33,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 332 flow. Second operand has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 0 states have call successors, (0), 0 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 14:07:33,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:07:33,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 315 [2023-08-30 14:07:33,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:07:34,166 INFO L130 PetriNetUnfolder]: 5690/9254 cut-off events. [2023-08-30 14:07:34,166 INFO L131 PetriNetUnfolder]: For 6454/6454 co-relation queries the response was YES. [2023-08-30 14:07:34,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25260 conditions, 9254 events. 5690/9254 cut-off events. For 6454/6454 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 58967 event pairs, 864 based on Foata normal form. 315/8888 useless extension candidates. Maximal degree in co-relation 25240. Up to 5381 conditions per place. [2023-08-30 14:07:34,206 INFO L137 encePairwiseOnDemand]: 300/315 looper letters, 173 selfloop transitions, 24 changer transitions 0/202 dead transitions. [2023-08-30 14:07:34,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 202 transitions, 1148 flow [2023-08-30 14:07:34,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:07:34,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:07:34,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1187 transitions. [2023-08-30 14:07:34,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5383219954648526 [2023-08-30 14:07:34,209 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1187 transitions. [2023-08-30 14:07:34,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1187 transitions. [2023-08-30 14:07:34,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:07:34,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1187 transitions. [2023-08-30 14:07:34,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 169.57142857142858) internal successors, (1187), 7 states have internal predecessors, (1187), 0 states have call successors, (0), 0 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 14:07:34,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 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 14:07:34,214 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 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 14:07:34,214 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 332 flow. Second operand 7 states and 1187 transitions. [2023-08-30 14:07:34,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 202 transitions, 1148 flow [2023-08-30 14:07:34,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 202 transitions, 1144 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:07:34,236 INFO L231 Difference]: Finished difference. Result has 82 places, 85 transitions, 522 flow [2023-08-30 14:07:34,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=522, PETRI_PLACES=82, PETRI_TRANSITIONS=85} [2023-08-30 14:07:34,237 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 25 predicate places. [2023-08-30 14:07:34,237 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 85 transitions, 522 flow [2023-08-30 14:07:34,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 0 states have call successors, (0), 0 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 14:07:34,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:07:34,238 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 14:07:34,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:07:34,238 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:07:34,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:07:34,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1262090963, now seen corresponding path program 1 times [2023-08-30 14:07:34,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:07:34,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416409245] [2023-08-30 14:07:34,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:07:34,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:07:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:07:34,250 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:07:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:07:34,259 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:07:34,259 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:07:34,259 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-30 14:07:34,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-08-30 14:07:34,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-08-30 14:07:34,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-08-30 14:07:34,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-08-30 14:07:34,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-08-30 14:07:34,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-08-30 14:07:34,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-08-30 14:07:34,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-08-30 14:07:34,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-08-30 14:07:34,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-08-30 14:07:34,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-08-30 14:07:34,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-08-30 14:07:34,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-08-30 14:07:34,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-08-30 14:07:34,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-08-30 14:07:34,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-08-30 14:07:34,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 14:07:34,262 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:07:34,263 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:07:34,263 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:07:34,278 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:07:34,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 212 transitions, 454 flow [2023-08-30 14:07:34,325 INFO L130 PetriNetUnfolder]: 62/446 cut-off events. [2023-08-30 14:07:34,325 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:07:34,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 446 events. 62/446 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1493 event pairs, 1 based on Foata normal form. 0/348 useless extension candidates. Maximal degree in co-relation 300. Up to 16 conditions per place. [2023-08-30 14:07:34,327 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 212 transitions, 454 flow [2023-08-30 14:07:34,328 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 190 places, 212 transitions, 454 flow [2023-08-30 14:07:34,328 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:07:34,328 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 190 places, 212 transitions, 454 flow [2023-08-30 14:07:34,329 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 190 places, 212 transitions, 454 flow [2023-08-30 14:07:34,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 212 transitions, 454 flow [2023-08-30 14:07:34,353 INFO L130 PetriNetUnfolder]: 62/446 cut-off events. [2023-08-30 14:07:34,353 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:07:34,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 446 events. 62/446 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1493 event pairs, 1 based on Foata normal form. 0/348 useless extension candidates. Maximal degree in co-relation 300. Up to 16 conditions per place. [2023-08-30 14:07:34,364 INFO L119 LiptonReduction]: Number of co-enabled transitions 21168 [2023-08-30 14:07:37,114 INFO L134 LiptonReduction]: Checked pairs total: 53126 [2023-08-30 14:07:37,114 INFO L136 LiptonReduction]: Total number of compositions: 165 [2023-08-30 14:07:37,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:07:37,115 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;@78e744f4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:07:37,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-30 14:07:37,117 INFO L130 PetriNetUnfolder]: 2/15 cut-off events. [2023-08-30 14:07:37,117 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:07:37,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:07:37,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:07:37,117 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:07:37,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:07:37,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1234936794, now seen corresponding path program 1 times [2023-08-30 14:07:37,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:07:37,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016828301] [2023-08-30 14:07:37,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:07:37,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:07:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:07:37,157 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 14:07:37,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:07:37,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016828301] [2023-08-30 14:07:37,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016828301] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:07:37,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:07:37,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:07:37,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135919992] [2023-08-30 14:07:37,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:07:37,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:07:37,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:07:37,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:07:37,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:07:37,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 377 [2023-08-30 14:07:37,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 93 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 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 14:07:37,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:07:37,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 377 [2023-08-30 14:07:37,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:07:45,287 INFO L130 PetriNetUnfolder]: 117789/166369 cut-off events. [2023-08-30 14:07:45,288 INFO L131 PetriNetUnfolder]: For 2603/2603 co-relation queries the response was YES. [2023-08-30 14:07:45,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330171 conditions, 166369 events. 117789/166369 cut-off events. For 2603/2603 co-relation queries the response was YES. Maximal size of possible extension queue 5247. Compared 1266983 event pairs, 74471 based on Foata normal form. 18552/131842 useless extension candidates. Maximal degree in co-relation 21768. Up to 162055 conditions per place. [2023-08-30 14:07:45,946 INFO L137 encePairwiseOnDemand]: 350/377 looper letters, 77 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-08-30 14:07:45,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 88 transitions, 364 flow [2023-08-30 14:07:45,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:07:45,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:07:45,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 644 transitions. [2023-08-30 14:07:45,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694076038903625 [2023-08-30 14:07:45,966 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 644 transitions. [2023-08-30 14:07:45,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 644 transitions. [2023-08-30 14:07:45,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:07:45,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 644 transitions. [2023-08-30 14:07:45,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 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 14:07:45,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 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 14:07:45,968 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 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 14:07:45,969 INFO L175 Difference]: Start difference. First operand has 75 places, 93 transitions, 216 flow. Second operand 3 states and 644 transitions. [2023-08-30 14:07:45,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 88 transitions, 364 flow [2023-08-30 14:07:45,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 88 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:07:45,973 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 192 flow [2023-08-30 14:07:45,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2023-08-30 14:07:45,975 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2023-08-30 14:07:45,975 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 192 flow [2023-08-30 14:07:45,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 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 14:07:45,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:07:45,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:07:45,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:07:45,978 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:07:45,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:07:45,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1372631753, now seen corresponding path program 1 times [2023-08-30 14:07:45,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:07:45,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472105686] [2023-08-30 14:07:45,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:07:45,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:07:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:07:46,002 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 14:07:46,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:07:46,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472105686] [2023-08-30 14:07:46,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472105686] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:07:46,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:07:46,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:07:46,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343612266] [2023-08-30 14:07:46,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:07:46,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:07:46,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:07:46,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:07:46,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:07:46,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 377 [2023-08-30 14:07:46,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 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 14:07:46,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:07:46,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 377 [2023-08-30 14:07:46,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:07:53,385 INFO L130 PetriNetUnfolder]: 112479/156676 cut-off events. [2023-08-30 14:07:53,386 INFO L131 PetriNetUnfolder]: For 8096/8096 co-relation queries the response was YES. [2023-08-30 14:07:53,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327105 conditions, 156676 events. 112479/156676 cut-off events. For 8096/8096 co-relation queries the response was YES. Maximal size of possible extension queue 5163. Compared 1150390 event pairs, 55091 based on Foata normal form. 156/109970 useless extension candidates. Maximal degree in co-relation 327011. Up to 153030 conditions per place. [2023-08-30 14:07:53,951 INFO L137 encePairwiseOnDemand]: 366/377 looper letters, 86 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2023-08-30 14:07:53,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 99 transitions, 449 flow [2023-08-30 14:07:53,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:07:53,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:07:53,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 620 transitions. [2023-08-30 14:07:53,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5481874447391689 [2023-08-30 14:07:53,953 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 620 transitions. [2023-08-30 14:07:53,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 620 transitions. [2023-08-30 14:07:53,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:07:53,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 620 transitions. [2023-08-30 14:07:53,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 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 14:07:53,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 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 14:07:53,957 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 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 14:07:53,958 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 192 flow. Second operand 3 states and 620 transitions. [2023-08-30 14:07:53,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 99 transitions, 449 flow [2023-08-30 14:07:53,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 99 transitions, 446 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:07:53,971 INFO L231 Difference]: Finished difference. Result has 80 places, 76 transitions, 228 flow [2023-08-30 14:07:53,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=80, PETRI_TRANSITIONS=76} [2023-08-30 14:07:53,971 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2023-08-30 14:07:53,971 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 76 transitions, 228 flow [2023-08-30 14:07:53,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 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 14:07:53,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:07:53,972 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:07:53,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 14:07:53,972 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:07:53,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:07:53,973 INFO L85 PathProgramCache]: Analyzing trace with hash 235491655, now seen corresponding path program 1 times [2023-08-30 14:07:53,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:07:53,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927869976] [2023-08-30 14:07:53,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:07:53,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:07:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:07:53,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:07:53,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:07:53,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927869976] [2023-08-30 14:07:53,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927869976] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:07:53,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:07:53,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:07:53,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698744766] [2023-08-30 14:07:53,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:07:53,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:07:53,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:07:53,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:07:53,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:07:53,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 377 [2023-08-30 14:07:53,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 76 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 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 14:07:53,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:07:53,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 377 [2023-08-30 14:07:53,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:08:00,995 INFO L130 PetriNetUnfolder]: 104892/145781 cut-off events. [2023-08-30 14:08:00,996 INFO L131 PetriNetUnfolder]: For 17950/17974 co-relation queries the response was YES. [2023-08-30 14:08:01,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328506 conditions, 145781 events. 104892/145781 cut-off events. For 17950/17974 co-relation queries the response was YES. Maximal size of possible extension queue 4788. Compared 1121715 event pairs, 19527 based on Foata normal form. 0/111495 useless extension candidates. Maximal degree in co-relation 193357. Up to 115989 conditions per place. [2023-08-30 14:08:01,543 INFO L137 encePairwiseOnDemand]: 373/377 looper letters, 105 selfloop transitions, 4 changer transitions 0/118 dead transitions. [2023-08-30 14:08:01,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 118 transitions, 555 flow [2023-08-30 14:08:01,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:08:01,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:08:01,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 634 transitions. [2023-08-30 14:08:01,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5605658709106985 [2023-08-30 14:08:01,546 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 634 transitions. [2023-08-30 14:08:01,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 634 transitions. [2023-08-30 14:08:01,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:08:01,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 634 transitions. [2023-08-30 14:08:01,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 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 14:08:01,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 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 14:08:01,549 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 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 14:08:01,549 INFO L175 Difference]: Start difference. First operand has 80 places, 76 transitions, 228 flow. Second operand 3 states and 634 transitions. [2023-08-30 14:08:01,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 118 transitions, 555 flow [2023-08-30 14:08:01,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 118 transitions, 548 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:08:01,574 INFO L231 Difference]: Finished difference. Result has 81 places, 76 transitions, 236 flow [2023-08-30 14:08:01,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=81, PETRI_TRANSITIONS=76} [2023-08-30 14:08:01,576 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 6 predicate places. [2023-08-30 14:08:01,576 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 76 transitions, 236 flow [2023-08-30 14:08:01,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 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 14:08:01,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:08:01,577 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:08:01,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:08:01,577 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:08:01,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:08:01,578 INFO L85 PathProgramCache]: Analyzing trace with hash 235491606, now seen corresponding path program 1 times [2023-08-30 14:08:01,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:08:01,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088628791] [2023-08-30 14:08:01,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:01,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:08:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:08:01,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:08:01,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:08:01,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088628791] [2023-08-30 14:08:01,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088628791] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:08:01,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:08:01,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:08:01,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615923970] [2023-08-30 14:08:01,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:08:01,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:08:01,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:08:01,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:08:01,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:08:01,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 377 [2023-08-30 14:08:01,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 76 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 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 14:08:01,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:08:01,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 377 [2023-08-30 14:08:01,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:08:08,314 INFO L130 PetriNetUnfolder]: 97305/136733 cut-off events. [2023-08-30 14:08:08,315 INFO L131 PetriNetUnfolder]: For 41104/41277 co-relation queries the response was YES. [2023-08-30 14:08:08,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312618 conditions, 136733 events. 97305/136733 cut-off events. For 41104/41277 co-relation queries the response was YES. Maximal size of possible extension queue 4366. Compared 1000043 event pairs, 91487 based on Foata normal form. 2793/109547 useless extension candidates. Maximal degree in co-relation 56012. Up to 134185 conditions per place. [2023-08-30 14:08:08,925 INFO L137 encePairwiseOnDemand]: 375/377 looper letters, 65 selfloop transitions, 1 changer transitions 0/75 dead transitions. [2023-08-30 14:08:08,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 75 transitions, 364 flow [2023-08-30 14:08:08,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:08:08,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:08:08,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 596 transitions. [2023-08-30 14:08:08,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5269672855879752 [2023-08-30 14:08:08,928 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 596 transitions. [2023-08-30 14:08:08,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 596 transitions. [2023-08-30 14:08:08,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:08:08,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 596 transitions. [2023-08-30 14:08:08,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 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 14:08:08,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 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 14:08:08,931 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 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 14:08:08,931 INFO L175 Difference]: Start difference. First operand has 81 places, 76 transitions, 236 flow. Second operand 3 states and 596 transitions. [2023-08-30 14:08:08,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 75 transitions, 364 flow [2023-08-30 14:08:08,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 75 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:08:08,958 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 230 flow [2023-08-30 14:08:08,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2023-08-30 14:08:08,959 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 6 predicate places. [2023-08-30 14:08:08,959 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 230 flow [2023-08-30 14:08:08,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 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 14:08:08,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:08:08,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:08:08,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:08:08,960 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:08:08,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:08:08,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1015988874, now seen corresponding path program 1 times [2023-08-30 14:08:08,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:08:08,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165733691] [2023-08-30 14:08:08,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:08,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:08:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:08:08,998 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 14:08:08,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:08:08,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165733691] [2023-08-30 14:08:08,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165733691] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:08:08,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:08:08,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:08:08,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586456256] [2023-08-30 14:08:08,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:08:09,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:08:09,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:08:09,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:08:09,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:08:09,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 377 [2023-08-30 14:08:09,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 230 flow. Second operand has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 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 14:08:09,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:08:09,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 377 [2023-08-30 14:08:09,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:08:19,045 INFO L130 PetriNetUnfolder]: 140460/199309 cut-off events. [2023-08-30 14:08:19,046 INFO L131 PetriNetUnfolder]: For 44042/44143 co-relation queries the response was YES. [2023-08-30 14:08:19,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450193 conditions, 199309 events. 140460/199309 cut-off events. For 44042/44143 co-relation queries the response was YES. Maximal size of possible extension queue 6744. Compared 1552443 event pairs, 31031 based on Foata normal form. 97/161536 useless extension candidates. Maximal degree in co-relation 450178. Up to 114086 conditions per place. [2023-08-30 14:08:19,975 INFO L137 encePairwiseOnDemand]: 356/377 looper letters, 219 selfloop transitions, 30 changer transitions 0/258 dead transitions. [2023-08-30 14:08:19,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 258 transitions, 1282 flow [2023-08-30 14:08:19,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:08:19,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:08:19,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1450 transitions. [2023-08-30 14:08:19,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5494505494505495 [2023-08-30 14:08:19,978 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1450 transitions. [2023-08-30 14:08:19,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1450 transitions. [2023-08-30 14:08:19,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:08:19,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1450 transitions. [2023-08-30 14:08:19,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 207.14285714285714) internal successors, (1450), 7 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 14:08:19,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 377.0) internal successors, (3016), 8 states have internal predecessors, (3016), 0 states have call successors, (0), 0 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 14:08:19,985 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 377.0) internal successors, (3016), 8 states have internal predecessors, (3016), 0 states have call successors, (0), 0 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 14:08:19,985 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 230 flow. Second operand 7 states and 1450 transitions. [2023-08-30 14:08:19,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 258 transitions, 1282 flow [2023-08-30 14:08:19,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 258 transitions, 1281 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:08:19,996 INFO L231 Difference]: Finished difference. Result has 91 places, 101 transitions, 491 flow [2023-08-30 14:08:19,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=491, PETRI_PLACES=91, PETRI_TRANSITIONS=101} [2023-08-30 14:08:19,997 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 16 predicate places. [2023-08-30 14:08:19,997 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 101 transitions, 491 flow [2023-08-30 14:08:19,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 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 14:08:19,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:08:19,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:08:19,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 14:08:19,998 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:08:19,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:08:19,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1015988805, now seen corresponding path program 1 times [2023-08-30 14:08:19,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:08:19,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382023978] [2023-08-30 14:08:19,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:19,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:08:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:08:20,032 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 14:08:20,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:08:20,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382023978] [2023-08-30 14:08:20,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382023978] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:08:20,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:08:20,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:08:20,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674988730] [2023-08-30 14:08:20,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:08:20,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:08:20,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:08:20,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:08:20,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:08:20,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 377 [2023-08-30 14:08:20,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 101 transitions, 491 flow. Second operand has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 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 14:08:20,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:08:20,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 377 [2023-08-30 14:08:20,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:08:32,545 INFO L130 PetriNetUnfolder]: 147683/214006 cut-off events. [2023-08-30 14:08:32,546 INFO L131 PetriNetUnfolder]: For 199608/199820 co-relation queries the response was YES. [2023-08-30 14:08:33,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605560 conditions, 214006 events. 147683/214006 cut-off events. For 199608/199820 co-relation queries the response was YES. Maximal size of possible extension queue 7452. Compared 1751186 event pairs, 29717 based on Foata normal form. 8172/209341 useless extension candidates. Maximal degree in co-relation 605539. Up to 132242 conditions per place. [2023-08-30 14:08:33,847 INFO L137 encePairwiseOnDemand]: 356/377 looper letters, 239 selfloop transitions, 42 changer transitions 0/290 dead transitions. [2023-08-30 14:08:33,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 290 transitions, 1803 flow [2023-08-30 14:08:33,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:08:33,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:08:33,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1450 transitions. [2023-08-30 14:08:33,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5494505494505495 [2023-08-30 14:08:33,877 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1450 transitions. [2023-08-30 14:08:33,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1450 transitions. [2023-08-30 14:08:33,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:08:33,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1450 transitions. [2023-08-30 14:08:33,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 207.14285714285714) internal successors, (1450), 7 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 14:08:33,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 377.0) internal successors, (3016), 8 states have internal predecessors, (3016), 0 states have call successors, (0), 0 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 14:08:33,883 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 377.0) internal successors, (3016), 8 states have internal predecessors, (3016), 0 states have call successors, (0), 0 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 14:08:33,883 INFO L175 Difference]: Start difference. First operand has 91 places, 101 transitions, 491 flow. Second operand 7 states and 1450 transitions. [2023-08-30 14:08:33,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 290 transitions, 1803 flow [2023-08-30 14:08:34,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 290 transitions, 1797 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:08:34,462 INFO L231 Difference]: Finished difference. Result has 100 places, 134 transitions, 967 flow [2023-08-30 14:08:34,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=967, PETRI_PLACES=100, PETRI_TRANSITIONS=134} [2023-08-30 14:08:34,464 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 25 predicate places. [2023-08-30 14:08:34,464 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 134 transitions, 967 flow [2023-08-30 14:08:34,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 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 14:08:34,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:08:34,464 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 14:08:34,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 14:08:34,465 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:08:34,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:08:34,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1414095406, now seen corresponding path program 1 times [2023-08-30 14:08:34,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:08:34,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856452648] [2023-08-30 14:08:34,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:34,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:08:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:08:34,501 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:08:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:08:34,527 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:08:34,529 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:08:34,529 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-08-30 14:08:34,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-30 14:08:34,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-30 14:08:34,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-30 14:08:34,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-30 14:08:34,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-30 14:08:34,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-30 14:08:34,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-30 14:08:34,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-30 14:08:34,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-30 14:08:34,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-30 14:08:34,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-30 14:08:34,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-08-30 14:08:34,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-30 14:08:34,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-30 14:08:34,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-30 14:08:34,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-30 14:08:34,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-30 14:08:34,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-30 14:08:34,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-30 14:08:34,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-30 14:08:34,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 14:08:34,543 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:08:34,544 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:08:34,544 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-30 14:08:34,569 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 14:08:34,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 250 transitions, 544 flow [2023-08-30 14:08:34,617 INFO L130 PetriNetUnfolder]: 96/680 cut-off events. [2023-08-30 14:08:34,617 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:08:34,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735 conditions, 680 events. 96/680 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2608 event pairs, 6 based on Foata normal form. 0/530 useless extension candidates. Maximal degree in co-relation 466. Up to 32 conditions per place. [2023-08-30 14:08:34,621 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 250 transitions, 544 flow [2023-08-30 14:08:34,625 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 250 transitions, 544 flow [2023-08-30 14:08:34,625 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:08:34,625 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 250 transitions, 544 flow [2023-08-30 14:08:34,626 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 250 transitions, 544 flow [2023-08-30 14:08:34,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 250 transitions, 544 flow [2023-08-30 14:08:34,670 INFO L130 PetriNetUnfolder]: 96/680 cut-off events. [2023-08-30 14:08:34,671 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:08:34,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735 conditions, 680 events. 96/680 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2608 event pairs, 6 based on Foata normal form. 0/530 useless extension candidates. Maximal degree in co-relation 466. Up to 32 conditions per place. [2023-08-30 14:08:34,688 INFO L119 LiptonReduction]: Number of co-enabled transitions 33840 [2023-08-30 14:08:37,563 INFO L134 LiptonReduction]: Checked pairs total: 90611 [2023-08-30 14:08:37,564 INFO L136 LiptonReduction]: Total number of compositions: 195 [2023-08-30 14:08:37,567 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:08:37,568 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;@78e744f4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:08:37,568 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-30 14:08:37,569 INFO L130 PetriNetUnfolder]: 4/18 cut-off events. [2023-08-30 14:08:37,569 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:08:37,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:08:37,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:08:37,570 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:08:37,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:08:37,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1696667381, now seen corresponding path program 1 times [2023-08-30 14:08:37,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:08:37,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178227544] [2023-08-30 14:08:37,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:08:37,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:08:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:08:37,620 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 14:08:37,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:08:37,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178227544] [2023-08-30 14:08:37,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178227544] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:08:37,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:08:37,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:08:37,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67334785] [2023-08-30 14:08:37,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:08:37,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:08:37,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:08:37,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:08:37,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:08:37,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 445 [2023-08-30 14:08:37,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 116 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 0 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 14:08:37,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:08:37,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 445 [2023-08-30 14:08:37,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand