./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.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 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 10:30:44,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:30:44,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:30:44,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:30:44,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:30:44,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:30:44,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:30:44,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:30:44,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:30:44,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:30:44,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:30:44,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:30:44,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:30:44,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:30:44,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:30:44,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:30:44,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:30:44,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:30:44,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:30:44,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:30:44,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:30:44,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:30:44,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:30:44,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:30:44,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:30:44,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:30:44,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:30:44,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:30:44,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:30:44,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:30:44,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:30:44,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:30:44,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:30:44,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:30:44,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:30:44,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:30:44,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:30:44,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:30:44,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:30:44,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:30:44,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:30:44,599 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:30:44,623 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:30:44,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:30:44,625 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:30:44,625 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:30:44,625 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:30:44,626 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:30:44,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:30:44,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:30:44,626 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:30:44,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:30:44,627 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:30:44,627 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:30:44,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:30:44,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:30:44,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:30:44,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:30:44,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:30:44,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:30:44,628 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:30:44,628 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:30:44,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:30:44,629 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:30:44,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:30:44,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:30:44,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:30:44,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:30:44,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:30:44,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:30:44,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:30:44,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:30:44,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:30:44,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:30:44,630 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:30:44,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:30:44,631 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:30:44,631 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:30:44,631 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:30:44,631 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:30:44,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:30:44,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:30:44,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:30:44,935 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:30:44,936 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:30:44,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2023-08-30 10:30:45,958 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:30:46,207 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:30:46,208 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2023-08-30 10:30:46,239 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53dc9a4cc/6b51370af04d41e186cd112444276c5b/FLAG4223913f4 [2023-08-30 10:30:46,256 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53dc9a4cc/6b51370af04d41e186cd112444276c5b [2023-08-30 10:30:46,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:30:46,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:30:46,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:30:46,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:30:46,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:30:46,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:30:46" (1/1) ... [2023-08-30 10:30:46,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b9fc902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:30:46, skipping insertion in model container [2023-08-30 10:30:46,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:30:46" (1/1) ... [2023-08-30 10:30:46,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:30:46,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:30:46,690 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_81-list_racing.i[47038,47051] [2023-08-30 10:30:46,720 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:30:46,733 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:30:46,760 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_81-list_racing.i[47038,47051] [2023-08-30 10:30:46,780 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:30:46,831 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:30:46,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:30:46 WrapperNode [2023-08-30 10:30:46,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:30:46,832 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:30:46,832 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:30:46,832 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:30:46,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:30:46" (1/1) ... [2023-08-30 10:30:46,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:30:46" (1/1) ... [2023-08-30 10:30:46,877 INFO L138 Inliner]: procedures = 278, calls = 54, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 218 [2023-08-30 10:30:46,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:30:46,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:30:46,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:30:46,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:30:46,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:30:46" (1/1) ... [2023-08-30 10:30:46,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:30:46" (1/1) ... [2023-08-30 10:30:46,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:30:46" (1/1) ... [2023-08-30 10:30:46,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:30:46" (1/1) ... [2023-08-30 10:30:46,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:30:46" (1/1) ... [2023-08-30 10:30:46,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:30:46" (1/1) ... [2023-08-30 10:30:46,918 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:30:46" (1/1) ... [2023-08-30 10:30:46,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:30:46" (1/1) ... [2023-08-30 10:30:46,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:30:46,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:30:46,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:30:46,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:30:46,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:30:46" (1/1) ... [2023-08-30 10:30:46,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:30:46,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:30:46,958 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 10:30:46,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 10:30:46,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:30:46,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 10:30:46,994 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-30 10:30:46,995 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-30 10:30:46,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:30:46,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:30:46,995 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-30 10:30:46,995 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-30 10:30:46,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:30:46,995 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 10:30:46,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 10:30:46,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:30:46,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 10:30:46,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:30:46,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:30:46,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:30:46,997 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 10:30:47,136 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:30:47,138 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:30:47,424 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:30:47,432 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:30:47,432 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-08-30 10:30:47,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:30:47 BoogieIcfgContainer [2023-08-30 10:30:47,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:30:47,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:30:47,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:30:47,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:30:47,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:30:46" (1/3) ... [2023-08-30 10:30:47,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77cf2f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:30:47, skipping insertion in model container [2023-08-30 10:30:47,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:30:46" (2/3) ... [2023-08-30 10:30:47,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77cf2f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:30:47, skipping insertion in model container [2023-08-30 10:30:47,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:30:47" (3/3) ... [2023-08-30 10:30:47,440 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2023-08-30 10:30:47,446 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:30:47,454 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:30:47,454 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-30 10:30:47,454 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:30:47,575 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 10:30:47,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 232 transitions, 486 flow [2023-08-30 10:30:47,725 INFO L130 PetriNetUnfolder]: 52/448 cut-off events. [2023-08-30 10:30:47,726 INFO L131 PetriNetUnfolder]: For 8/14 co-relation queries the response was YES. [2023-08-30 10:30:47,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 448 events. 52/448 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1863 event pairs, 0 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 224. Up to 8 conditions per place. [2023-08-30 10:30:47,740 INFO L82 GeneralOperation]: Start removeDead. Operand has 214 places, 232 transitions, 486 flow [2023-08-30 10:30:47,746 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 231 transitions, 482 flow [2023-08-30 10:30:47,749 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:30:47,756 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 231 transitions, 482 flow [2023-08-30 10:30:47,758 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 231 transitions, 482 flow [2023-08-30 10:30:47,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 231 transitions, 482 flow [2023-08-30 10:30:47,817 INFO L130 PetriNetUnfolder]: 52/447 cut-off events. [2023-08-30 10:30:47,817 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2023-08-30 10:30:47,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 447 events. 52/447 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1857 event pairs, 0 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 224. Up to 8 conditions per place. [2023-08-30 10:30:47,834 INFO L119 LiptonReduction]: Number of co-enabled transitions 16790 [2023-08-30 10:30:53,883 INFO L134 LiptonReduction]: Checked pairs total: 29453 [2023-08-30 10:30:53,883 INFO L136 LiptonReduction]: Total number of compositions: 197 [2023-08-30 10:30:53,892 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:30:53,900 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;@4c8899e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:30:53,901 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-30 10:30:53,903 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-08-30 10:30:53,903 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:30:53,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:53,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 10:30:53,904 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:30:53,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:53,908 INFO L85 PathProgramCache]: Analyzing trace with hash 27774437, now seen corresponding path program 1 times [2023-08-30 10:30:53,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:53,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971720028] [2023-08-30 10:30:53,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:53,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:30:54,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:54,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971720028] [2023-08-30 10:30:54,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971720028] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:30:54,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:30:54,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:30:54,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011918873] [2023-08-30 10:30:54,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:30:54,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:30:54,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:54,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:30:54,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:30:54,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 429 [2023-08-30 10:30:54,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 74 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:54,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:54,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 429 [2023-08-30 10:30:54,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:54,770 INFO L130 PetriNetUnfolder]: 3979/6483 cut-off events. [2023-08-30 10:30:54,770 INFO L131 PetriNetUnfolder]: For 144/144 co-relation queries the response was YES. [2023-08-30 10:30:54,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12814 conditions, 6483 events. 3979/6483 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 37807 event pairs, 1932 based on Foata normal form. 200/4999 useless extension candidates. Maximal degree in co-relation 11579. Up to 6220 conditions per place. [2023-08-30 10:30:54,792 INFO L137 encePairwiseOnDemand]: 413/429 looper letters, 60 selfloop transitions, 2 changer transitions 1/69 dead transitions. [2023-08-30 10:30:54,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 284 flow [2023-08-30 10:30:54,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:30:54,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:30:54,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 692 transitions. [2023-08-30 10:30:54,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5376845376845377 [2023-08-30 10:30:54,803 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 692 transitions. [2023-08-30 10:30:54,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 692 transitions. [2023-08-30 10:30:54,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:54,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 692 transitions. [2023-08-30 10:30:54,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:54,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:54,814 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:54,815 INFO L175 Difference]: Start difference. First operand has 62 places, 74 transitions, 168 flow. Second operand 3 states and 692 transitions. [2023-08-30 10:30:54,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 284 flow [2023-08-30 10:30:54,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 69 transitions, 281 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:30:54,819 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 147 flow [2023-08-30 10:30:54,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2023-08-30 10:30:54,823 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 0 predicate places. [2023-08-30 10:30:54,823 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 147 flow [2023-08-30 10:30:54,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:54,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:54,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:54,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:30:54,824 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:30:54,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:54,825 INFO L85 PathProgramCache]: Analyzing trace with hash 763288814, now seen corresponding path program 1 times [2023-08-30 10:30:54,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:54,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518476587] [2023-08-30 10:30:54,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:54,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:54,908 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 10:30:54,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:54,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518476587] [2023-08-30 10:30:54,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518476587] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:30:54,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2215448] [2023-08-30 10:30:54,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:54,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:30:54,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:30:54,921 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:30:54,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 10:30:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:55,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:30:55,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:30:55,123 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 10:30:55,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:30:55,140 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 10:30:55,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2215448] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:30:55,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:30:55,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:30:55,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869034686] [2023-08-30 10:30:55,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:30:55,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:30:55,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:55,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:30:55,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:30:55,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 429 [2023-08-30 10:30:55,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 147 flow. Second operand has 7 states, 7 states have (on average 206.42857142857142) internal successors, (1445), 7 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:55,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:55,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 429 [2023-08-30 10:30:55,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:55,198 INFO L130 PetriNetUnfolder]: 14/41 cut-off events. [2023-08-30 10:30:55,198 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 10:30:55,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 41 events. 14/41 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 1 based on Foata normal form. 8/49 useless extension candidates. Maximal degree in co-relation 99. Up to 30 conditions per place. [2023-08-30 10:30:55,199 INFO L137 encePairwiseOnDemand]: 426/429 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-08-30 10:30:55,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 20 transitions, 86 flow [2023-08-30 10:30:55,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:30:55,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:30:55,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 836 transitions. [2023-08-30 10:30:55,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2023-08-30 10:30:55,201 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 836 transitions. [2023-08-30 10:30:55,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 836 transitions. [2023-08-30 10:30:55,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:55,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 836 transitions. [2023-08-30 10:30:55,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:55,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 429.0) internal successors, (2145), 5 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:55,208 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 429.0) internal successors, (2145), 5 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:55,208 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 147 flow. Second operand 4 states and 836 transitions. [2023-08-30 10:30:55,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 20 transitions, 86 flow [2023-08-30 10:30:55,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 20 transitions, 80 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 10:30:55,209 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-30 10:30:55,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2023-08-30 10:30:55,210 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -44 predicate places. [2023-08-30 10:30:55,210 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-30 10:30:55,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 206.42857142857142) internal successors, (1445), 7 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:55,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-30 10:30:55,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-30 10:30:55,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-30 10:30:55,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-30 10:30:55,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-30 10:30:55,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-30 10:30:55,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2023-08-30 10:30:55,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2023-08-30 10:30:55,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-08-30 10:30:55,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2023-08-30 10:30:55,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-30 10:30:55,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-30 10:30:55,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-30 10:30:55,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-30 10:30:55,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-30 10:30:55,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-30 10:30:55,226 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 10:30:55,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:30:55,423 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-30 10:30:55,425 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 10:30:55,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 232 transitions, 486 flow [2023-08-30 10:30:55,458 INFO L130 PetriNetUnfolder]: 52/448 cut-off events. [2023-08-30 10:30:55,458 INFO L131 PetriNetUnfolder]: For 8/14 co-relation queries the response was YES. [2023-08-30 10:30:55,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 448 events. 52/448 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1863 event pairs, 0 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 224. Up to 8 conditions per place. [2023-08-30 10:30:55,460 INFO L82 GeneralOperation]: Start removeDead. Operand has 214 places, 232 transitions, 486 flow [2023-08-30 10:30:55,462 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 228 transitions, 472 flow [2023-08-30 10:30:55,462 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:30:55,462 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 228 transitions, 472 flow [2023-08-30 10:30:55,462 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 228 transitions, 472 flow [2023-08-30 10:30:55,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 228 transitions, 472 flow [2023-08-30 10:30:55,492 INFO L130 PetriNetUnfolder]: 48/426 cut-off events. [2023-08-30 10:30:55,493 INFO L131 PetriNetUnfolder]: For 4/6 co-relation queries the response was YES. [2023-08-30 10:30:55,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 426 events. 48/426 cut-off events. For 4/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1721 event pairs, 0 based on Foata normal form. 0/348 useless extension candidates. Maximal degree in co-relation 204. Up to 8 conditions per place. [2023-08-30 10:30:55,500 INFO L119 LiptonReduction]: Number of co-enabled transitions 15916 [2023-08-30 10:31:00,386 INFO L134 LiptonReduction]: Checked pairs total: 28042 [2023-08-30 10:31:00,387 INFO L136 LiptonReduction]: Total number of compositions: 199 [2023-08-30 10:31:00,388 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:31:00,389 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;@4c8899e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:31:00,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-30 10:31:00,391 INFO L130 PetriNetUnfolder]: 0/21 cut-off events. [2023-08-30 10:31:00,391 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:31:00,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:31:00,392 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 10:31:00,392 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:31:00,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:31:00,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1794675943, now seen corresponding path program 1 times [2023-08-30 10:31:00,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:31:00,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409009455] [2023-08-30 10:31:00,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:31:00,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:31:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:31:00,411 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:31:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:31:00,431 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:31:00,431 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:31:00,431 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-30 10:31:00,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-30 10:31:00,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 10:31:00,432 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 10:31:00,432 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-08-30 10:31:00,433 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:31:00,433 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 10:31:00,460 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-30 10:31:00,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 320 places, 353 transitions, 754 flow [2023-08-30 10:31:00,600 INFO L130 PetriNetUnfolder]: 191/1373 cut-off events. [2023-08-30 10:31:00,600 INFO L131 PetriNetUnfolder]: For 72/88 co-relation queries the response was YES. [2023-08-30 10:31:00,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1470 conditions, 1373 events. 191/1373 cut-off events. For 72/88 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 8734 event pairs, 2 based on Foata normal form. 0/1095 useless extension candidates. Maximal degree in co-relation 849. Up to 32 conditions per place. [2023-08-30 10:31:00,608 INFO L82 GeneralOperation]: Start removeDead. Operand has 320 places, 353 transitions, 754 flow [2023-08-30 10:31:00,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 319 places, 352 transitions, 748 flow [2023-08-30 10:31:00,617 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:31:00,617 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 319 places, 352 transitions, 748 flow [2023-08-30 10:31:00,617 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 319 places, 352 transitions, 748 flow [2023-08-30 10:31:00,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 319 places, 352 transitions, 748 flow [2023-08-30 10:31:00,760 INFO L130 PetriNetUnfolder]: 191/1372 cut-off events. [2023-08-30 10:31:00,763 INFO L131 PetriNetUnfolder]: For 71/85 co-relation queries the response was YES. [2023-08-30 10:31:00,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1467 conditions, 1372 events. 191/1372 cut-off events. For 71/85 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 8710 event pairs, 2 based on Foata normal form. 0/1094 useless extension candidates. Maximal degree in co-relation 849. Up to 32 conditions per place. [2023-08-30 10:31:00,802 INFO L119 LiptonReduction]: Number of co-enabled transitions 62192 [2023-08-30 10:31:06,995 INFO L134 LiptonReduction]: Checked pairs total: 135114 [2023-08-30 10:31:06,995 INFO L136 LiptonReduction]: Total number of compositions: 284 [2023-08-30 10:31:06,998 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:31:07,002 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;@4c8899e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:31:07,002 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 10:31:07,004 INFO L130 PetriNetUnfolder]: 0/11 cut-off events. [2023-08-30 10:31:07,004 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:31:07,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:31:07,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:31:07,005 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:31:07,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:31:07,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1771724285, now seen corresponding path program 1 times [2023-08-30 10:31:07,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:31:07,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796991949] [2023-08-30 10:31:07,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:31:07,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:31:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:31:07,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:31:07,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:31:07,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796991949] [2023-08-30 10:31:07,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796991949] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:31:07,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:31:07,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:31:07,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457140237] [2023-08-30 10:31:07,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:31:07,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:31:07,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:31:07,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:31:07,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:31:07,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 637 [2023-08-30 10:31:07,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 126 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 308.3333333333333) internal successors, (925), 3 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:31:07,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:31:07,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 637 [2023-08-30 10:31:07,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand