./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_20-callback_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_20-callback_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 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f --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 14:10:06,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:10:06,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:10:06,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:10:06,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:10:06,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:10:06,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:10:06,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:10:06,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:10:06,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:10:06,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:10:06,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:10:06,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:10:06,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:10:06,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:10:06,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:10:06,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:10:06,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:10:06,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:10:06,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:10:06,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:10:06,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:10:06,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:10:06,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:10:06,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:10:06,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:10:06,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:10:06,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:10:06,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:10:06,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:10:06,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:10:06,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:10:06,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:10:06,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:10:06,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:10:06,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:10:06,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:10:06,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:10:06,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:10:06,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:10:06,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:10:06,147 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:10:06,181 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:10:06,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:10:06,182 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:10:06,183 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:10:06,183 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:10:06,184 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:10:06,184 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:10:06,184 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:10:06,185 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:10:06,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:10:06,186 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:10:06,186 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:10:06,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:10:06,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:10:06,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:10:06,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:10:06,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:10:06,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:10:06,187 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:10:06,187 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:10:06,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:10:06,188 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:10:06,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:10:06,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:10:06,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:10:06,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:10:06,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:10:06,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:10:06,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:10:06,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:10:06,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:10:06,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:10:06,190 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:10:06,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:10:06,190 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:10:06,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:10:06,191 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:10:06,191 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:10:06,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:10:06,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:10:06,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:10:06,531 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:10:06,531 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:10:06,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_20-callback_racefree.i [2023-08-30 14:10:07,693 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:10:07,999 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:10:08,000 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_20-callback_racefree.i [2023-08-30 14:10:08,015 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec6400aa6/47018ab7af2345e19b0e1dba9dbc42a6/FLAGf8108f0c8 [2023-08-30 14:10:08,036 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec6400aa6/47018ab7af2345e19b0e1dba9dbc42a6 [2023-08-30 14:10:08,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:10:08,039 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:10:08,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:10:08,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:10:08,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:10:08,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:10:08" (1/1) ... [2023-08-30 14:10:08,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3473a57e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:08, skipping insertion in model container [2023-08-30 14:10:08,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:10:08" (1/1) ... [2023-08-30 14:10:08,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:10:08,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:10:08,391 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_20-callback_racefree.i[30212,30225] [2023-08-30 14:10:08,421 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:10:08,443 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:10:08,490 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_20-callback_racefree.i[30212,30225] [2023-08-30 14:10:08,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:10:08,541 WARN L667 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 14:10:08,547 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:10:08,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:08 WrapperNode [2023-08-30 14:10:08,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:10:08,549 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:10:08,549 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:10:08,550 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:10:08,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:08" (1/1) ... [2023-08-30 14:10:08,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:08" (1/1) ... [2023-08-30 14:10:08,614 INFO L138 Inliner]: procedures = 173, calls = 33, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 145 [2023-08-30 14:10:08,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:10:08,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:10:08,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:10:08,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:10:08,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:08" (1/1) ... [2023-08-30 14:10:08,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:08" (1/1) ... [2023-08-30 14:10:08,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:08" (1/1) ... [2023-08-30 14:10:08,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:08" (1/1) ... [2023-08-30 14:10:08,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:08" (1/1) ... [2023-08-30 14:10:08,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:08" (1/1) ... [2023-08-30 14:10:08,670 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:08" (1/1) ... [2023-08-30 14:10:08,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:08" (1/1) ... [2023-08-30 14:10:08,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:10:08,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:10:08,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:10:08,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:10:08,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:08" (1/1) ... [2023-08-30 14:10:08,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:10:08,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:10:08,710 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 14:10:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:10:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:10:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:10:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:10:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:10:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:10:08,751 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:10:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:10:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:10:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:10:08,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:10:08,753 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 14:10:08,741 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 14:10:08,923 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:10:08,925 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:10:09,192 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:10:09,199 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:10:09,200 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-08-30 14:10:09,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:10:09 BoogieIcfgContainer [2023-08-30 14:10:09,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:10:09,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:10:09,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:10:09,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:10:09,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:10:08" (1/3) ... [2023-08-30 14:10:09,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b929a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:10:09, skipping insertion in model container [2023-08-30 14:10:09,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:08" (2/3) ... [2023-08-30 14:10:09,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b929a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:10:09, skipping insertion in model container [2023-08-30 14:10:09,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:10:09" (3/3) ... [2023-08-30 14:10:09,218 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_20-callback_racefree.i [2023-08-30 14:10:09,225 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:10:09,233 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:10:09,234 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 14:10:09,234 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:10:09,304 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:10:09,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 156 transitions, 320 flow [2023-08-30 14:10:09,434 INFO L130 PetriNetUnfolder]: 26/238 cut-off events. [2023-08-30 14:10:09,434 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:10:09,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 238 events. 26/238 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 690 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 117. Up to 6 conditions per place. [2023-08-30 14:10:09,440 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 156 transitions, 320 flow [2023-08-30 14:10:09,445 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 153 transitions, 314 flow [2023-08-30 14:10:09,447 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:10:09,455 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 153 transitions, 314 flow [2023-08-30 14:10:09,458 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 153 transitions, 314 flow [2023-08-30 14:10:09,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 153 transitions, 314 flow [2023-08-30 14:10:09,492 INFO L130 PetriNetUnfolder]: 25/235 cut-off events. [2023-08-30 14:10:09,492 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:10:09,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 235 events. 25/235 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 676 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 117. Up to 6 conditions per place. [2023-08-30 14:10:09,496 INFO L119 LiptonReduction]: Number of co-enabled transitions 3496 [2023-08-30 14:10:13,006 INFO L134 LiptonReduction]: Checked pairs total: 5220 [2023-08-30 14:10:13,006 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-08-30 14:10:13,019 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:10:13,031 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;@5377983e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:10:13,031 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-30 14:10:13,039 INFO L130 PetriNetUnfolder]: 2/10 cut-off events. [2023-08-30 14:10:13,040 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:10:13,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:13,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:10:13,042 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 14:10:13,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:13,048 INFO L85 PathProgramCache]: Analyzing trace with hash 17559726, now seen corresponding path program 1 times [2023-08-30 14:10:13,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:13,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424423583] [2023-08-30 14:10:13,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:13,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:13,327 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 14:10:13,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:10:13,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424423583] [2023-08-30 14:10:13,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424423583] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:10:13,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:10:13,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:10:13,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096152058] [2023-08-30 14:10:13,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:10:13,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:10:13,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:10:13,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:10:13,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:10:13,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 298 [2023-08-30 14:10:13,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 43 transitions, 94 flow. Second operand has 3 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 14:10:13,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:10:13,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 298 [2023-08-30 14:10:13,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:10:13,443 INFO L130 PetriNetUnfolder]: 78/180 cut-off events. [2023-08-30 14:10:13,443 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:10:13,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 180 events. 78/180 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 679 event pairs, 48 based on Foata normal form. 23/162 useless extension candidates. Maximal degree in co-relation 339. Up to 167 conditions per place. [2023-08-30 14:10:13,446 INFO L137 encePairwiseOnDemand]: 284/298 looper letters, 31 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-08-30 14:10:13,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 148 flow [2023-08-30 14:10:13,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:10:13,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:10:13,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2023-08-30 14:10:13,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5123042505592841 [2023-08-30 14:10:13,460 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 458 transitions. [2023-08-30 14:10:13,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 458 transitions. [2023-08-30 14:10:13,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:10:13,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 458 transitions. [2023-08-30 14:10:13,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:13,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:13,473 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:13,474 INFO L175 Difference]: Start difference. First operand has 36 places, 43 transitions, 94 flow. Second operand 3 states and 458 transitions. [2023-08-30 14:10:13,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 148 flow [2023-08-30 14:10:13,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 148 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:10:13,479 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 80 flow [2023-08-30 14:10:13,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2023-08-30 14:10:13,483 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-08-30 14:10:13,483 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 80 flow [2023-08-30 14:10:13,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 14:10:13,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:13,484 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 14:10:13,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:10:13,485 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 14:10:13,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:13,485 INFO L85 PathProgramCache]: Analyzing trace with hash -304909636, now seen corresponding path program 1 times [2023-08-30 14:10:13,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:13,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433681299] [2023-08-30 14:10:13,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:13,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:10:13,508 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:10:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:10:13,537 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:10:13,538 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:10:13,539 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-08-30 14:10:13,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2023-08-30 14:10:13,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2023-08-30 14:10:13,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2023-08-30 14:10:13,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2023-08-30 14:10:13,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2023-08-30 14:10:13,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2023-08-30 14:10:13,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2023-08-30 14:10:13,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2023-08-30 14:10:13,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2023-08-30 14:10:13,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2023-08-30 14:10:13,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:10:13,544 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-30 14:10:13,546 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:10:13,546 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:10:13,563 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:10:13,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 177 transitions, 372 flow [2023-08-30 14:10:13,616 INFO L130 PetriNetUnfolder]: 43/377 cut-off events. [2023-08-30 14:10:13,616 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:10:13,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 377 events. 43/377 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1411 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 240. Up to 9 conditions per place. [2023-08-30 14:10:13,621 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 177 transitions, 372 flow [2023-08-30 14:10:13,623 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 177 transitions, 372 flow [2023-08-30 14:10:13,624 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:10:13,624 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 177 transitions, 372 flow [2023-08-30 14:10:13,624 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 177 transitions, 372 flow [2023-08-30 14:10:13,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 177 transitions, 372 flow [2023-08-30 14:10:13,659 INFO L130 PetriNetUnfolder]: 43/377 cut-off events. [2023-08-30 14:10:13,660 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:10:13,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 377 events. 43/377 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1411 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 240. Up to 9 conditions per place. [2023-08-30 14:10:13,668 INFO L119 LiptonReduction]: Number of co-enabled transitions 8436 [2023-08-30 14:10:16,939 INFO L134 LiptonReduction]: Checked pairs total: 13154 [2023-08-30 14:10:16,940 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-08-30 14:10:16,942 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:10:16,943 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;@5377983e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:10:16,943 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-30 14:10:16,945 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2023-08-30 14:10:16,945 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:10:16,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:16,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:10:16,946 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 14:10:16,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:16,946 INFO L85 PathProgramCache]: Analyzing trace with hash 28362941, now seen corresponding path program 1 times [2023-08-30 14:10:16,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:16,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270599900] [2023-08-30 14:10:16,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:16,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:17,027 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 14:10:17,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:10:17,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270599900] [2023-08-30 14:10:17,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270599900] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:10:17,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:10:17,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:10:17,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827180867] [2023-08-30 14:10:17,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:10:17,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:10:17,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:10:17,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:10:17,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:10:17,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 330 [2023-08-30 14:10:17,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 58 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:17,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:10:17,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 330 [2023-08-30 14:10:17,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:10:17,342 INFO L130 PetriNetUnfolder]: 1795/2981 cut-off events. [2023-08-30 14:10:17,342 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2023-08-30 14:10:17,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5961 conditions, 2981 events. 1795/2981 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16123 event pairs, 765 based on Foata normal form. 204/2462 useless extension candidates. Maximal degree in co-relation 1049. Up to 2916 conditions per place. [2023-08-30 14:10:17,357 INFO L137 encePairwiseOnDemand]: 314/330 looper letters, 47 selfloop transitions, 2 changer transitions 1/55 dead transitions. [2023-08-30 14:10:17,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 55 transitions, 228 flow [2023-08-30 14:10:17,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:10:17,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:10:17,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 523 transitions. [2023-08-30 14:10:17,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5282828282828282 [2023-08-30 14:10:17,363 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 523 transitions. [2023-08-30 14:10:17,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 523 transitions. [2023-08-30 14:10:17,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:10:17,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 523 transitions. [2023-08-30 14:10:17,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:17,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:17,370 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:17,370 INFO L175 Difference]: Start difference. First operand has 48 places, 58 transitions, 134 flow. Second operand 3 states and 523 transitions. [2023-08-30 14:10:17,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 55 transitions, 228 flow [2023-08-30 14:10:17,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 55 transitions, 228 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:10:17,373 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 126 flow [2023-08-30 14:10:17,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-08-30 14:10:17,376 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2023-08-30 14:10:17,376 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 126 flow [2023-08-30 14:10:17,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:17,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:17,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:10:17,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:10:17,381 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 14:10:17,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:17,381 INFO L85 PathProgramCache]: Analyzing trace with hash -883320646, now seen corresponding path program 1 times [2023-08-30 14:10:17,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:17,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130107595] [2023-08-30 14:10:17,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:17,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:17,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:10:17,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:10:17,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130107595] [2023-08-30 14:10:17,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130107595] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:10:17,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470765008] [2023-08-30 14:10:17,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:17,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:10:17,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:10:17,475 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:10:17,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 14:10:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:17,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:10:17,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:10:17,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:10:17,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:10:17,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:10:17,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470765008] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:10:17,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:10:17,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:10:17,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285583957] [2023-08-30 14:10:17,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:10:17,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:10:17,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:10:17,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:10:17,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:10:17,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 330 [2023-08-30 14:10:17,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 126 flow. Second operand has 7 states, 7 states have (on average 153.14285714285714) internal successors, (1072), 7 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:17,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:10:17,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 330 [2023-08-30 14:10:17,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:10:17,778 INFO L130 PetriNetUnfolder]: 261/502 cut-off events. [2023-08-30 14:10:17,779 INFO L131 PetriNetUnfolder]: For 98/98 co-relation queries the response was YES. [2023-08-30 14:10:17,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1166 conditions, 502 events. 261/502 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2230 event pairs, 0 based on Foata normal form. 49/481 useless extension candidates. Maximal degree in co-relation 218. Up to 226 conditions per place. [2023-08-30 14:10:17,781 INFO L137 encePairwiseOnDemand]: 325/330 looper letters, 44 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2023-08-30 14:10:17,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 50 transitions, 218 flow [2023-08-30 14:10:17,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:10:17,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:10:17,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 957 transitions. [2023-08-30 14:10:17,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2023-08-30 14:10:17,785 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 957 transitions. [2023-08-30 14:10:17,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 957 transitions. [2023-08-30 14:10:17,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:10:17,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 957 transitions. [2023-08-30 14:10:17,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 159.5) internal successors, (957), 6 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:17,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 330.0) internal successors, (2310), 7 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:17,792 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 330.0) internal successors, (2310), 7 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:17,792 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 126 flow. Second operand 6 states and 957 transitions. [2023-08-30 14:10:17,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 50 transitions, 218 flow [2023-08-30 14:10:17,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 50 transitions, 214 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:10:17,795 INFO L231 Difference]: Finished difference. Result has 31 places, 20 transitions, 66 flow [2023-08-30 14:10:17,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=66, PETRI_PLACES=31, PETRI_TRANSITIONS=20} [2023-08-30 14:10:17,796 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -17 predicate places. [2023-08-30 14:10:17,796 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 20 transitions, 66 flow [2023-08-30 14:10:17,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 153.14285714285714) internal successors, (1072), 7 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:17,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:17,797 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:10:17,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 14:10:18,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:10:18,003 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 14:10:18,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:18,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1613123583, now seen corresponding path program 1 times [2023-08-30 14:10:18,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:18,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793656882] [2023-08-30 14:10:18,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:18,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:18,076 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 14:10:18,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:10:18,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793656882] [2023-08-30 14:10:18,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793656882] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:10:18,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:10:18,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:10:18,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306486096] [2023-08-30 14:10:18,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:10:18,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:10:18,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:10:18,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:10:18,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:10:18,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 330 [2023-08-30 14:10:18,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 20 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:18,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:10:18,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 330 [2023-08-30 14:10:18,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:10:18,135 INFO L130 PetriNetUnfolder]: 190/350 cut-off events. [2023-08-30 14:10:18,136 INFO L131 PetriNetUnfolder]: For 166/166 co-relation queries the response was YES. [2023-08-30 14:10:18,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 823 conditions, 350 events. 190/350 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1383 event pairs, 190 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 273. Up to 339 conditions per place. [2023-08-30 14:10:18,138 INFO L137 encePairwiseOnDemand]: 328/330 looper letters, 16 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2023-08-30 14:10:18,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 19 transitions, 94 flow [2023-08-30 14:10:18,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:10:18,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:10:18,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2023-08-30 14:10:18,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2023-08-30 14:10:18,140 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 473 transitions. [2023-08-30 14:10:18,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 473 transitions. [2023-08-30 14:10:18,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:10:18,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 473 transitions. [2023-08-30 14:10:18,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:18,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:18,146 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:18,146 INFO L175 Difference]: Start difference. First operand has 31 places, 20 transitions, 66 flow. Second operand 3 states and 473 transitions. [2023-08-30 14:10:18,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 19 transitions, 94 flow [2023-08-30 14:10:18,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 19 transitions, 87 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 14:10:18,148 INFO L231 Difference]: Finished difference. Result has 28 places, 19 transitions, 55 flow [2023-08-30 14:10:18,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=55, PETRI_PLACES=28, PETRI_TRANSITIONS=19} [2023-08-30 14:10:18,150 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -20 predicate places. [2023-08-30 14:10:18,150 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions, 55 flow [2023-08-30 14:10:18,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:18,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:18,152 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 14:10:18,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:10:18,152 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 14:10:18,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:18,153 INFO L85 PathProgramCache]: Analyzing trace with hash 271490228, now seen corresponding path program 1 times [2023-08-30 14:10:18,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:18,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178932520] [2023-08-30 14:10:18,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:18,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:10:18,179 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:10:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:10:18,207 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:10:18,207 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:10:18,211 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-08-30 14:10:18,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2023-08-30 14:10:18,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2023-08-30 14:10:18,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2023-08-30 14:10:18,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2023-08-30 14:10:18,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2023-08-30 14:10:18,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2023-08-30 14:10:18,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2023-08-30 14:10:18,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2023-08-30 14:10:18,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2023-08-30 14:10:18,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2023-08-30 14:10:18,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:10:18,214 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-30 14:10:18,215 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:10:18,215 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:10:18,233 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:10:18,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 198 transitions, 426 flow [2023-08-30 14:10:18,283 INFO L130 PetriNetUnfolder]: 65/555 cut-off events. [2023-08-30 14:10:18,284 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:10:18,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 555 events. 65/555 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2309 event pairs, 1 based on Foata normal form. 0/442 useless extension candidates. Maximal degree in co-relation 385. Up to 16 conditions per place. [2023-08-30 14:10:18,286 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 198 transitions, 426 flow [2023-08-30 14:10:18,290 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 198 transitions, 426 flow [2023-08-30 14:10:18,290 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:10:18,290 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 182 places, 198 transitions, 426 flow [2023-08-30 14:10:18,291 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 182 places, 198 transitions, 426 flow [2023-08-30 14:10:18,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 198 transitions, 426 flow [2023-08-30 14:10:18,349 INFO L130 PetriNetUnfolder]: 65/555 cut-off events. [2023-08-30 14:10:18,350 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:10:18,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 555 events. 65/555 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2309 event pairs, 1 based on Foata normal form. 0/442 useless extension candidates. Maximal degree in co-relation 385. Up to 16 conditions per place. [2023-08-30 14:10:18,363 INFO L119 LiptonReduction]: Number of co-enabled transitions 13908 [2023-08-30 14:10:21,728 INFO L134 LiptonReduction]: Checked pairs total: 22031 [2023-08-30 14:10:21,728 INFO L136 LiptonReduction]: Total number of compositions: 169 [2023-08-30 14:10:21,730 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:10:21,730 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;@5377983e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:10:21,730 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-30 14:10:21,732 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2023-08-30 14:10:21,732 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:10:21,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:21,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:10:21,732 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 14:10:21,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:21,733 INFO L85 PathProgramCache]: Analyzing trace with hash 40307065, now seen corresponding path program 1 times [2023-08-30 14:10:21,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:21,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244879817] [2023-08-30 14:10:21,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:21,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:21,752 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 14:10:21,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:10:21,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244879817] [2023-08-30 14:10:21,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244879817] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:10:21,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:10:21,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:10:21,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069116543] [2023-08-30 14:10:21,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:10:21,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:10:21,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:10:21,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:10:21,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:10:21,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 367 [2023-08-30 14:10:21,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 67 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:21,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:10:21,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 367 [2023-08-30 14:10:21,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:10:23,273 INFO L130 PetriNetUnfolder]: 13999/20241 cut-off events. [2023-08-30 14:10:23,273 INFO L131 PetriNetUnfolder]: For 518/518 co-relation queries the response was YES. [2023-08-30 14:10:23,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40621 conditions, 20241 events. 13999/20241 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 121975 event pairs, 8909 based on Foata normal form. 2116/18579 useless extension candidates. Maximal degree in co-relation 5942. Up to 20026 conditions per place. [2023-08-30 14:10:23,387 INFO L137 encePairwiseOnDemand]: 349/367 looper letters, 51 selfloop transitions, 2 changer transitions 1/60 dead transitions. [2023-08-30 14:10:23,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 258 flow [2023-08-30 14:10:23,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:10:23,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:10:23,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 573 transitions. [2023-08-30 14:10:23,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204359673024523 [2023-08-30 14:10:23,391 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 573 transitions. [2023-08-30 14:10:23,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 573 transitions. [2023-08-30 14:10:23,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:10:23,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 573 transitions. [2023-08-30 14:10:23,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:23,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:23,397 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:23,397 INFO L175 Difference]: Start difference. First operand has 56 places, 67 transitions, 164 flow. Second operand 3 states and 573 transitions. [2023-08-30 14:10:23,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 258 flow [2023-08-30 14:10:23,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 60 transitions, 258 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:10:23,403 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 152 flow [2023-08-30 14:10:23,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2023-08-30 14:10:23,405 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-08-30 14:10:23,405 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 152 flow [2023-08-30 14:10:23,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:23,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:23,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:10:23,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:10:23,407 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 14:10:23,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:23,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1072281085, now seen corresponding path program 1 times [2023-08-30 14:10:23,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:23,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482558329] [2023-08-30 14:10:23,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:23,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:23,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:10:23,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:10:23,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482558329] [2023-08-30 14:10:23,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482558329] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:10:23,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402933427] [2023-08-30 14:10:23,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:23,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:10:23,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:10:23,457 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:10:23,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 14:10:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:23,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:10:23,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:10:23,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:10:23,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:10:23,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:10:23,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402933427] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:10:23,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:10:23,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:10:23,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436765512] [2023-08-30 14:10:23,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:10:23,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:10:23,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:10:23,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:10:23,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:10:23,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 367 [2023-08-30 14:10:23,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 152 flow. Second operand has 7 states, 7 states have (on average 168.14285714285714) internal successors, (1177), 7 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:23,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:10:23,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 367 [2023-08-30 14:10:23,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:10:23,929 INFO L130 PetriNetUnfolder]: 2091/3315 cut-off events. [2023-08-30 14:10:23,929 INFO L131 PetriNetUnfolder]: For 970/970 co-relation queries the response was YES. [2023-08-30 14:10:23,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7648 conditions, 3315 events. 2091/3315 cut-off events. For 970/970 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 17920 event pairs, 0 based on Foata normal form. 245/3199 useless extension candidates. Maximal degree in co-relation 1599. Up to 1466 conditions per place. [2023-08-30 14:10:23,952 INFO L137 encePairwiseOnDemand]: 362/367 looper letters, 65 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2023-08-30 14:10:23,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 74 transitions, 325 flow [2023-08-30 14:10:23,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:10:23,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:10:23,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1238 transitions. [2023-08-30 14:10:23,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48189957181782794 [2023-08-30 14:10:23,956 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1238 transitions. [2023-08-30 14:10:23,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1238 transitions. [2023-08-30 14:10:23,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:10:23,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1238 transitions. [2023-08-30 14:10:23,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 176.85714285714286) internal successors, (1238), 7 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:23,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 367.0) internal successors, (2936), 8 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:23,965 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 367.0) internal successors, (2936), 8 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:23,965 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 152 flow. Second operand 7 states and 1238 transitions. [2023-08-30 14:10:23,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 74 transitions, 325 flow [2023-08-30 14:10:23,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 74 transitions, 317 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 14:10:23,968 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 95 flow [2023-08-30 14:10:23,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=95, PETRI_PLACES=40, PETRI_TRANSITIONS=28} [2023-08-30 14:10:23,971 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -16 predicate places. [2023-08-30 14:10:23,971 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 95 flow [2023-08-30 14:10:23,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 168.14285714285714) internal successors, (1177), 7 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:23,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:23,974 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:10:23,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 14:10:24,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-08-30 14:10:24,184 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 14:10:24,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:24,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1118991639, now seen corresponding path program 1 times [2023-08-30 14:10:24,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:24,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100439114] [2023-08-30 14:10:24,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:24,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:24,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:10:24,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:10:24,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100439114] [2023-08-30 14:10:24,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100439114] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:10:24,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023562] [2023-08-30 14:10:24,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:24,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:10:24,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:10:24,242 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:10:24,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 14:10:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:24,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:10:24,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:10:24,343 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 14:10:24,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:10:24,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023562] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:10:24,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:10:24,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:10:24,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104635625] [2023-08-30 14:10:24,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:10:24,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:10:24,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:10:24,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:10:24,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:10:24,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 367 [2023-08-30 14:10:24,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:24,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:10:24,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 367 [2023-08-30 14:10:24,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:10:24,550 INFO L130 PetriNetUnfolder]: 1519/2303 cut-off events. [2023-08-30 14:10:24,550 INFO L131 PetriNetUnfolder]: For 820/820 co-relation queries the response was YES. [2023-08-30 14:10:24,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5185 conditions, 2303 events. 1519/2303 cut-off events. For 820/820 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11069 event pairs, 935 based on Foata normal form. 0/2212 useless extension candidates. Maximal degree in co-relation 1076. Up to 2249 conditions per place. [2023-08-30 14:10:24,560 INFO L137 encePairwiseOnDemand]: 364/367 looper letters, 26 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-08-30 14:10:24,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 31 transitions, 149 flow [2023-08-30 14:10:24,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:10:24,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:10:24,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 696 transitions. [2023-08-30 14:10:24,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47411444141689374 [2023-08-30 14:10:24,563 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 696 transitions. [2023-08-30 14:10:24,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 696 transitions. [2023-08-30 14:10:24,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:10:24,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 696 transitions. [2023-08-30 14:10:24,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:24,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:24,568 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:24,568 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 95 flow. Second operand 4 states and 696 transitions. [2023-08-30 14:10:24,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 31 transitions, 149 flow [2023-08-30 14:10:24,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 31 transitions, 140 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 14:10:24,571 INFO L231 Difference]: Finished difference. Result has 38 places, 26 transitions, 78 flow [2023-08-30 14:10:24,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=38, PETRI_TRANSITIONS=26} [2023-08-30 14:10:24,572 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -18 predicate places. [2023-08-30 14:10:24,572 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 78 flow [2023-08-30 14:10:24,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:24,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:24,575 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 14:10:24,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 14:10:24,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:10:24,780 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 14:10:24,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:24,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1907857819, now seen corresponding path program 1 times [2023-08-30 14:10:24,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:24,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840732866] [2023-08-30 14:10:24,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:24,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:10:24,794 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:10:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:10:24,807 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:10:24,807 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:10:24,807 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-08-30 14:10:24,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2023-08-30 14:10:24,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2023-08-30 14:10:24,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2023-08-30 14:10:24,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2023-08-30 14:10:24,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2023-08-30 14:10:24,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2023-08-30 14:10:24,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2023-08-30 14:10:24,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2023-08-30 14:10:24,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2023-08-30 14:10:24,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2023-08-30 14:10:24,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:10:24,810 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-30 14:10:24,810 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:10:24,810 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-30 14:10:24,826 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 14:10:24,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 219 transitions, 482 flow [2023-08-30 14:10:24,909 INFO L130 PetriNetUnfolder]: 99/813 cut-off events. [2023-08-30 14:10:24,909 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:10:24,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 813 events. 99/813 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3723 event pairs, 6 based on Foata normal form. 0/646 useless extension candidates. Maximal degree in co-relation 575. Up to 32 conditions per place. [2023-08-30 14:10:24,915 INFO L82 GeneralOperation]: Start removeDead. Operand has 201 places, 219 transitions, 482 flow [2023-08-30 14:10:24,918 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 219 transitions, 482 flow [2023-08-30 14:10:24,919 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:10:24,919 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 201 places, 219 transitions, 482 flow [2023-08-30 14:10:24,919 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 201 places, 219 transitions, 482 flow [2023-08-30 14:10:24,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 219 transitions, 482 flow [2023-08-30 14:10:24,997 INFO L130 PetriNetUnfolder]: 99/813 cut-off events. [2023-08-30 14:10:24,997 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:10:25,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 813 events. 99/813 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3723 event pairs, 6 based on Foata normal form. 0/646 useless extension candidates. Maximal degree in co-relation 575. Up to 32 conditions per place. [2023-08-30 14:10:25,019 INFO L119 LiptonReduction]: Number of co-enabled transitions 20216 [2023-08-30 14:10:28,244 INFO L134 LiptonReduction]: Checked pairs total: 33209 [2023-08-30 14:10:28,245 INFO L136 LiptonReduction]: Total number of compositions: 185 [2023-08-30 14:10:28,246 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:10:28,246 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;@5377983e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:10:28,247 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-30 14:10:28,248 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2023-08-30 14:10:28,248 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:10:28,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:28,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:10:28,249 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 14:10:28,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:28,249 INFO L85 PathProgramCache]: Analyzing trace with hash 53390166, now seen corresponding path program 1 times [2023-08-30 14:10:28,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:28,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087436979] [2023-08-30 14:10:28,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:28,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:28,275 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 14:10:28,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:10:28,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087436979] [2023-08-30 14:10:28,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087436979] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:10:28,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:10:28,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:10:28,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539909751] [2023-08-30 14:10:28,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:10:28,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:10:28,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:10:28,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:10:28,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:10:28,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 404 [2023-08-30 14:10:28,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 82 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:28,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:10:28,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 404 [2023-08-30 14:10:28,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:10:37,838 INFO L130 PetriNetUnfolder]: 123105/170115 cut-off events. [2023-08-30 14:10:37,838 INFO L131 PetriNetUnfolder]: For 6096/6096 co-relation queries the response was YES. [2023-08-30 14:10:38,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336666 conditions, 170115 events. 123105/170115 cut-off events. For 6096/6096 co-relation queries the response was YES. Maximal size of possible extension queue 5378. Compared 1242315 event pairs, 87915 based on Foata normal form. 38382/169256 useless extension candidates. Maximal degree in co-relation 50085. Up to 163060 conditions per place. [2023-08-30 14:10:38,849 INFO L137 encePairwiseOnDemand]: 381/404 looper letters, 59 selfloop transitions, 2 changer transitions 1/70 dead transitions. [2023-08-30 14:10:38,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 70 transitions, 308 flow [2023-08-30 14:10:38,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:10:38,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:10:38,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 632 transitions. [2023-08-30 14:10:38,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214521452145214 [2023-08-30 14:10:38,853 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 632 transitions. [2023-08-30 14:10:38,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 632 transitions. [2023-08-30 14:10:38,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:10:38,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 632 transitions. [2023-08-30 14:10:38,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:38,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:38,861 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:38,861 INFO L175 Difference]: Start difference. First operand has 67 places, 82 transitions, 208 flow. Second operand 3 states and 632 transitions. [2023-08-30 14:10:38,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 70 transitions, 308 flow [2023-08-30 14:10:38,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 70 transitions, 308 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:10:38,867 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 184 flow [2023-08-30 14:10:38,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2023-08-30 14:10:38,868 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2023-08-30 14:10:38,869 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 184 flow [2023-08-30 14:10:38,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:38,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:38,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:10:38,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 14:10:38,870 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 14:10:38,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:38,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1778001970, now seen corresponding path program 1 times [2023-08-30 14:10:38,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:38,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187267304] [2023-08-30 14:10:38,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:38,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:38,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:10:38,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:10:38,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187267304] [2023-08-30 14:10:38,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187267304] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:10:38,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727226069] [2023-08-30 14:10:38,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:38,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:10:38,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:10:38,925 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:10:38,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 14:10:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:39,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:10:39,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:10:39,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:10:39,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:10:39,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:10:39,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727226069] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:10:39,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:10:39,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:10:39,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282076718] [2023-08-30 14:10:39,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:10:39,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:10:39,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:10:39,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:10:39,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:10:39,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 404 [2023-08-30 14:10:39,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 184 flow. Second operand has 7 states, 7 states have (on average 183.14285714285714) internal successors, (1282), 7 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:39,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:10:39,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 404 [2023-08-30 14:10:39,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:10:46,200 INFO L130 PetriNetUnfolder]: 100650/137218 cut-off events. [2023-08-30 14:10:46,201 INFO L131 PetriNetUnfolder]: For 6074/6074 co-relation queries the response was YES. [2023-08-30 14:10:46,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277927 conditions, 137218 events. 100650/137218 cut-off events. For 6074/6074 co-relation queries the response was YES. Maximal size of possible extension queue 4408. Compared 941121 event pairs, 1274 based on Foata normal form. 300/110594 useless extension candidates. Maximal degree in co-relation 56107. Up to 113383 conditions per place. [2023-08-30 14:10:46,780 INFO L137 encePairwiseOnDemand]: 398/404 looper letters, 125 selfloop transitions, 9 changer transitions 0/142 dead transitions. [2023-08-30 14:10:46,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 142 transitions, 616 flow [2023-08-30 14:10:46,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:10:46,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:10:46,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1407 transitions. [2023-08-30 14:10:46,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975247524752475 [2023-08-30 14:10:46,784 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1407 transitions. [2023-08-30 14:10:46,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1407 transitions. [2023-08-30 14:10:46,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:10:46,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1407 transitions. [2023-08-30 14:10:46,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 201.0) internal successors, (1407), 7 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:46,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 404.0) internal successors, (3232), 8 states have internal predecessors, (3232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:46,791 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 404.0) internal successors, (3232), 8 states have internal predecessors, (3232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:46,791 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 184 flow. Second operand 7 states and 1407 transitions. [2023-08-30 14:10:46,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 142 transitions, 616 flow [2023-08-30 14:10:46,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 142 transitions, 614 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:10:46,795 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 235 flow [2023-08-30 14:10:46,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=235, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2023-08-30 14:10:46,796 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 9 predicate places. [2023-08-30 14:10:46,796 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 235 flow [2023-08-30 14:10:46,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 183.14285714285714) internal successors, (1282), 7 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:46,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:46,797 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:10:46,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 14:10:47,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:10:47,002 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 14:10:47,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:47,002 INFO L85 PathProgramCache]: Analyzing trace with hash -716621425, now seen corresponding path program 1 times [2023-08-30 14:10:47,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:47,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728409914] [2023-08-30 14:10:47,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:47,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:47,038 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 14:10:47,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:10:47,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728409914] [2023-08-30 14:10:47,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728409914] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:10:47,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:10:47,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:10:47,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803432275] [2023-08-30 14:10:47,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:10:47,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:10:47,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:10:47,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:10:47,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:10:47,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 404 [2023-08-30 14:10:47,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:47,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:10:47,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 404 [2023-08-30 14:10:47,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:10:54,734 INFO L130 PetriNetUnfolder]: 95755/130151 cut-off events. [2023-08-30 14:10:54,734 INFO L131 PetriNetUnfolder]: For 37441/37441 co-relation queries the response was YES. [2023-08-30 14:10:54,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274587 conditions, 130151 events. 95755/130151 cut-off events. For 37441/37441 co-relation queries the response was YES. Maximal size of possible extension queue 4278. Compared 882829 event pairs, 93235 based on Foata normal form. 1554/106714 useless extension candidates. Maximal degree in co-relation 35873. Up to 126057 conditions per place. [2023-08-30 14:10:55,257 INFO L137 encePairwiseOnDemand]: 402/404 looper letters, 55 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-08-30 14:10:55,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 64 transitions, 326 flow [2023-08-30 14:10:55,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:10:55,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:10:55,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 599 transitions. [2023-08-30 14:10:55,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49422442244224424 [2023-08-30 14:10:55,259 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 599 transitions. [2023-08-30 14:10:55,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 599 transitions. [2023-08-30 14:10:55,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:10:55,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 599 transitions. [2023-08-30 14:10:55,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:55,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:55,262 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:55,262 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 235 flow. Second operand 3 states and 599 transitions. [2023-08-30 14:10:55,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 64 transitions, 326 flow [2023-08-30 14:10:55,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 64 transitions, 318 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 14:10:55,278 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 208 flow [2023-08-30 14:10:55,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2023-08-30 14:10:55,279 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 8 predicate places. [2023-08-30 14:10:55,279 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 208 flow [2023-08-30 14:10:55,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:55,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:55,280 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-30 14:10:55,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:10:55,280 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 14:10:55,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:55,280 INFO L85 PathProgramCache]: Analyzing trace with hash 708289679, now seen corresponding path program 1 times [2023-08-30 14:10:55,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:55,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429989677] [2023-08-30 14:10:55,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:55,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:10:55,295 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:10:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:10:55,308 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:10:55,308 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:10:55,309 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-08-30 14:10:55,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2023-08-30 14:10:55,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2023-08-30 14:10:55,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2023-08-30 14:10:55,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2023-08-30 14:10:55,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2023-08-30 14:10:55,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2023-08-30 14:10:55,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2023-08-30 14:10:55,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2023-08-30 14:10:55,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2023-08-30 14:10:55,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2023-08-30 14:10:55,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 14:10:55,311 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-30 14:10:55,311 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:10:55,311 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-30 14:10:55,329 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-30 14:10:55,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 240 transitions, 540 flow [2023-08-30 14:10:55,440 INFO L130 PetriNetUnfolder]: 161/1235 cut-off events. [2023-08-30 14:10:55,441 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-30 14:10:55,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1346 conditions, 1235 events. 161/1235 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6346 event pairs, 23 based on Foata normal form. 0/982 useless extension candidates. Maximal degree in co-relation 858. Up to 80 conditions per place. [2023-08-30 14:10:55,450 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 240 transitions, 540 flow [2023-08-30 14:10:55,455 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 240 transitions, 540 flow [2023-08-30 14:10:55,455 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:10:55,456 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 240 transitions, 540 flow [2023-08-30 14:10:55,456 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 240 transitions, 540 flow [2023-08-30 14:10:55,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 240 transitions, 540 flow [2023-08-30 14:10:55,722 INFO L130 PetriNetUnfolder]: 161/1235 cut-off events. [2023-08-30 14:10:55,722 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-30 14:10:55,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1346 conditions, 1235 events. 161/1235 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6346 event pairs, 23 based on Foata normal form. 0/982 useless extension candidates. Maximal degree in co-relation 858. Up to 80 conditions per place. [2023-08-30 14:10:55,744 INFO L119 LiptonReduction]: Number of co-enabled transitions 27360 [2023-08-30 14:10:58,808 INFO L134 LiptonReduction]: Checked pairs total: 45685 [2023-08-30 14:10:58,808 INFO L136 LiptonReduction]: Total number of compositions: 200 [2023-08-30 14:10:58,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:10:58,810 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;@5377983e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:10:58,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-30 14:10:58,811 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2023-08-30 14:10:58,811 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:10:58,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:58,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:10:58,812 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 14:10:58,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:58,812 INFO L85 PathProgramCache]: Analyzing trace with hash 67579694, now seen corresponding path program 1 times [2023-08-30 14:10:58,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:58,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034245119] [2023-08-30 14:10:58,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:58,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:58,844 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 14:10:58,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:10:58,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034245119] [2023-08-30 14:10:58,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034245119] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:10:58,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:10:58,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:10:58,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961195138] [2023-08-30 14:10:58,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:10:58,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:10:58,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:10:58,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:10:58,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:10:58,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 440 [2023-08-30 14:10:58,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 87 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:58,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:10:58,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 440 [2023-08-30 14:10:58,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:12:11,226 INFO L130 PetriNetUnfolder]: 800849/1019108 cut-off events. [2023-08-30 14:12:11,240 INFO L131 PetriNetUnfolder]: For 45745/45745 co-relation queries the response was YES. [2023-08-30 14:12:13,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2050835 conditions, 1019108 events. 800849/1019108 cut-off events. For 45745/45745 co-relation queries the response was YES. Maximal size of possible extension queue 22232. Compared 6894448 event pairs, 612835 based on Foata normal form. 113975/999057 useless extension candidates. Maximal degree in co-relation 270884. Up to 1010374 conditions per place. [2023-08-30 14:12:17,358 INFO L137 encePairwiseOnDemand]: 417/440 looper letters, 66 selfloop transitions, 2 changer transitions 1/76 dead transitions. [2023-08-30 14:12:17,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 76 transitions, 350 flow [2023-08-30 14:12:17,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:12:17,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:12:17,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 684 transitions. [2023-08-30 14:12:17,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181818181818182 [2023-08-30 14:12:17,361 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 684 transitions. [2023-08-30 14:12:17,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 684 transitions. [2023-08-30 14:12:17,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:12:17,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 684 transitions. [2023-08-30 14:12:17,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:17,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:17,366 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:17,366 INFO L175 Difference]: Start difference. First operand has 73 places, 87 transitions, 234 flow. Second operand 3 states and 684 transitions. [2023-08-30 14:12:17,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 76 transitions, 350 flow [2023-08-30 14:12:17,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 76 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:12:17,374 INFO L231 Difference]: Finished difference. Result has 75 places, 68 transitions, 210 flow [2023-08-30 14:12:17,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=75, PETRI_TRANSITIONS=68} [2023-08-30 14:12:17,374 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 2 predicate places. [2023-08-30 14:12:17,375 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 68 transitions, 210 flow [2023-08-30 14:12:17,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:17,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:12:17,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:12:17,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 14:12:17,376 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 14:12:17,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:12:17,376 INFO L85 PathProgramCache]: Analyzing trace with hash 139902567, now seen corresponding path program 1 times [2023-08-30 14:12:17,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:12:17,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648352640] [2023-08-30 14:12:17,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:17,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:12:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:12:17,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:12:17,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:12:17,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648352640] [2023-08-30 14:12:17,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648352640] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:12:17,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056642127] [2023-08-30 14:12:17,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:17,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:12:17,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:12:17,419 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:12:17,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 14:12:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:12:17,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:12:17,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:12:17,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:12:17,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:12:17,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:12:17,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056642127] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:12:17,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:12:17,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:12:17,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064055674] [2023-08-30 14:12:17,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:12:17,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:12:17,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:12:17,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:12:17,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:12:17,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 440 [2023-08-30 14:12:17,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 68 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 198.14285714285714) internal successors, (1387), 7 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:17,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:12:17,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 440 [2023-08-30 14:12:17,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:13:10,775 INFO L130 PetriNetUnfolder]: 713799/922794 cut-off events. [2023-08-30 14:13:10,775 INFO L131 PetriNetUnfolder]: For 41104/41104 co-relation queries the response was YES. [2023-08-30 14:13:12,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1865248 conditions, 922794 events. 713799/922794 cut-off events. For 41104/41104 co-relation queries the response was YES. Maximal size of possible extension queue 19609. Compared 6415579 event pairs, 18347 based on Foata normal form. 217/823234 useless extension candidates. Maximal degree in co-relation 313471. Up to 791734 conditions per place. [2023-08-30 14:13:15,273 INFO L137 encePairwiseOnDemand]: 434/440 looper letters, 137 selfloop transitions, 9 changer transitions 0/153 dead transitions. [2023-08-30 14:13:15,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 153 transitions, 678 flow [2023-08-30 14:13:15,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:13:15,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:13:15,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1524 transitions. [2023-08-30 14:13:15,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4948051948051948 [2023-08-30 14:13:15,277 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1524 transitions. [2023-08-30 14:13:15,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1524 transitions. [2023-08-30 14:13:15,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:13:15,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1524 transitions. [2023-08-30 14:13:15,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 217.71428571428572) internal successors, (1524), 7 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:15,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 440.0) internal successors, (3520), 8 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:15,287 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 440.0) internal successors, (3520), 8 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:15,287 INFO L175 Difference]: Start difference. First operand has 75 places, 68 transitions, 210 flow. Second operand 7 states and 1524 transitions. [2023-08-30 14:13:15,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 153 transitions, 678 flow [2023-08-30 14:13:15,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 153 transitions, 676 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:13:15,293 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 261 flow [2023-08-30 14:13:15,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=261, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2023-08-30 14:13:15,294 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 9 predicate places. [2023-08-30 14:13:15,294 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 261 flow [2023-08-30 14:13:15,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 198.14285714285714) internal successors, (1387), 7 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:15,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:13:15,295 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:13:15,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 14:13:15,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 14:13:15,501 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 14:13:15,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:13:15,502 INFO L85 PathProgramCache]: Analyzing trace with hash 42125159, now seen corresponding path program 1 times [2023-08-30 14:13:15,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:13:15,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562325022] [2023-08-30 14:13:15,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:13:15,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:13:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:13:15,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:13:15,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:13:15,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562325022] [2023-08-30 14:13:15,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562325022] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:13:15,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970710565] [2023-08-30 14:13:15,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:13:15,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:13:15,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:13:15,556 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:13:15,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 14:13:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:13:15,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:13:15,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:13:15,645 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 14:13:15,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:13:15,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970710565] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:13:15,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:13:15,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:13:15,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899717256] [2023-08-30 14:13:15,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:13:15,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:13:15,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:13:15,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:13:15,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:13:15,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 440 [2023-08-30 14:13:15,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 72 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 198.75) internal successors, (795), 4 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:15,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:13:15,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 440 [2023-08-30 14:13:15,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:14:18,896 INFO L130 PetriNetUnfolder]: 683876/873390 cut-off events. [2023-08-30 14:14:18,896 INFO L131 PetriNetUnfolder]: For 193171/193171 co-relation queries the response was YES. [2023-08-30 14:14:20,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1822894 conditions, 873390 events. 683876/873390 cut-off events. For 193171/193171 co-relation queries the response was YES. Maximal size of possible extension queue 18909. Compared 5783350 event pairs, 522788 based on Foata normal form. 7560/788742 useless extension candidates. Maximal degree in co-relation 224734. Up to 861130 conditions per place. [2023-08-30 14:14:23,653 INFO L137 encePairwiseOnDemand]: 437/440 looper letters, 67 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-30 14:14:23,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 76 transitions, 394 flow [2023-08-30 14:14:23,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:14:23,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:14:23,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 855 transitions. [2023-08-30 14:14:23,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48579545454545453 [2023-08-30 14:14:23,655 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 855 transitions. [2023-08-30 14:14:23,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 855 transitions. [2023-08-30 14:14:23,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:14:23,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 855 transitions. [2023-08-30 14:14:23,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:23,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 440.0) internal successors, (2200), 5 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:23,661 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 440.0) internal successors, (2200), 5 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:23,661 INFO L175 Difference]: Start difference. First operand has 82 places, 72 transitions, 261 flow. Second operand 4 states and 855 transitions. [2023-08-30 14:14:23,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 76 transitions, 394 flow [2023-08-30 14:14:23,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 76 transitions, 386 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 14:14:23,740 INFO L231 Difference]: Finished difference. Result has 82 places, 69 transitions, 236 flow [2023-08-30 14:14:23,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=82, PETRI_TRANSITIONS=69} [2023-08-30 14:14:23,741 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 9 predicate places. [2023-08-30 14:14:23,741 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 69 transitions, 236 flow [2023-08-30 14:14:23,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 198.75) internal successors, (795), 4 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:23,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:23,742 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:14:23,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 14:14:23,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 14:14:23,947 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 14:14:23,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:23,947 INFO L85 PathProgramCache]: Analyzing trace with hash -752613684, now seen corresponding path program 1 times [2023-08-30 14:14:23,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:23,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132740355] [2023-08-30 14:14:23,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:23,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:14:24,005 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-30 14:14:24,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:14:24,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132740355] [2023-08-30 14:14:24,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132740355] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:14:24,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:14:24,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:14:24,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634402200] [2023-08-30 14:14:24,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:14:24,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:14:24,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:14:24,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:14:24,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:14:24,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 440 [2023-08-30 14:14:24,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 69 transitions, 236 flow. Second operand has 4 states, 4 states have (on average 195.5) internal successors, (782), 4 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:24,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:14:24,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 440 [2023-08-30 14:14:24,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand