./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_71-funloop_racing.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_71-funloop_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 bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f --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 14:18:40,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:18:40,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:18:40,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:18:40,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:18:40,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:18:40,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:18:40,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:18:40,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:18:40,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:18:40,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:18:40,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:18:40,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:18:40,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:18:40,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:18:40,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:18:40,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:18:40,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:18:40,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:18:40,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:18:40,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:18:40,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:18:40,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:18:40,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:18:40,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:18:40,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:18:40,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:18:40,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:18:40,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:18:40,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:18:40,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:18:40,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:18:40,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:18:40,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:18:40,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:18:40,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:18:40,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:18:40,425 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:18:40,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:18:40,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:18:40,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:18:40,427 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:18:40,448 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:18:40,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:18:40,449 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:18:40,449 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:18:40,450 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:18:40,450 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:18:40,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:18:40,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:18:40,451 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:18:40,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:18:40,452 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:18:40,452 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:18:40,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:18:40,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:18:40,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:18:40,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:18:40,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:18:40,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:18:40,454 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:18:40,454 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:18:40,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:18:40,454 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:18:40,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:18:40,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:18:40,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:18:40,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:18:40,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:18:40,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:18:40,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:18:40,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:18:40,456 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:18:40,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:18:40,457 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:18:40,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:18:40,457 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:18:40,457 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:18:40,458 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:18:40,458 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:18:40,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:18:40,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:18:40,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:18:40,794 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:18:40,794 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:18:40,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_71-funloop_racing.i [2023-08-30 14:18:41,871 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:18:42,154 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:18:42,155 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_71-funloop_racing.i [2023-08-30 14:18:42,171 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27c1c583a/d0d4997dc9884cf5a72d18fff7d4b712/FLAG2a79a10c2 [2023-08-30 14:18:42,188 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27c1c583a/d0d4997dc9884cf5a72d18fff7d4b712 [2023-08-30 14:18:42,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:18:42,191 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:18:42,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:18:42,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:18:42,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:18:42,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:18:42" (1/1) ... [2023-08-30 14:18:42,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6092b7f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:18:42, skipping insertion in model container [2023-08-30 14:18:42,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:18:42" (1/1) ... [2023-08-30 14:18:42,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:18:42,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:18:42,700 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_71-funloop_racing.i[41323,41336] [2023-08-30 14:18:42,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:18:42,755 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:18:42,799 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_71-funloop_racing.i[41323,41336] [2023-08-30 14:18:42,827 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:18:42,912 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:18:42,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:18:42 WrapperNode [2023-08-30 14:18:42,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:18:42,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:18:42,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:18:42,914 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:18:42,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:18:42" (1/1) ... [2023-08-30 14:18:42,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:18:42" (1/1) ... [2023-08-30 14:18:42,980 INFO L138 Inliner]: procedures = 271, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 269 [2023-08-30 14:18:42,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:18:42,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:18:42,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:18:42,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:18:42,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:18:42" (1/1) ... [2023-08-30 14:18:42,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:18:42" (1/1) ... [2023-08-30 14:18:43,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:18:42" (1/1) ... [2023-08-30 14:18:43,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:18:42" (1/1) ... [2023-08-30 14:18:43,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:18:42" (1/1) ... [2023-08-30 14:18:43,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:18:42" (1/1) ... [2023-08-30 14:18:43,031 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:18:42" (1/1) ... [2023-08-30 14:18:43,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:18:42" (1/1) ... [2023-08-30 14:18:43,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:18:43,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:18:43,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:18:43,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:18:43,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:18:42" (1/1) ... [2023-08-30 14:18:43,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:18:43,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:18:43,069 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 14:18:43,096 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 14:18:43,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:18:43,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:18:43,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:18:43,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:18:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:18:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:18:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:18:43,117 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:18:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:18:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:18:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:18:43,119 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 14:18:43,269 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:18:43,271 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:18:43,674 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:18:43,683 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:18:43,683 INFO L302 CfgBuilder]: Removed 35 assume(true) statements. [2023-08-30 14:18:43,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:18:43 BoogieIcfgContainer [2023-08-30 14:18:43,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:18:43,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:18:43,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:18:43,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:18:43,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:18:42" (1/3) ... [2023-08-30 14:18:43,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f22b6d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:18:43, skipping insertion in model container [2023-08-30 14:18:43,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:18:42" (2/3) ... [2023-08-30 14:18:43,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f22b6d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:18:43, skipping insertion in model container [2023-08-30 14:18:43,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:18:43" (3/3) ... [2023-08-30 14:18:43,693 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_71-funloop_racing.i [2023-08-30 14:18:43,704 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:18:43,712 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:18:43,713 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-08-30 14:18:43,713 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:18:43,775 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:18:43,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 284 transitions, 576 flow [2023-08-30 14:18:43,936 INFO L130 PetriNetUnfolder]: 73/434 cut-off events. [2023-08-30 14:18:43,937 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:18:43,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 434 events. 73/434 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2040 event pairs, 0 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 239. Up to 8 conditions per place. [2023-08-30 14:18:43,946 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 284 transitions, 576 flow [2023-08-30 14:18:43,959 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 240 places, 281 transitions, 570 flow [2023-08-30 14:18:43,963 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:18:43,977 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 240 places, 281 transitions, 570 flow [2023-08-30 14:18:43,984 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 240 places, 281 transitions, 570 flow [2023-08-30 14:18:43,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 240 places, 281 transitions, 570 flow [2023-08-30 14:18:44,056 INFO L130 PetriNetUnfolder]: 72/431 cut-off events. [2023-08-30 14:18:44,057 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:18:44,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 431 events. 72/431 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2031 event pairs, 0 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 239. Up to 8 conditions per place. [2023-08-30 14:18:44,073 INFO L119 LiptonReduction]: Number of co-enabled transitions 25600 [2023-08-30 14:18:47,727 INFO L134 LiptonReduction]: Checked pairs total: 44481 [2023-08-30 14:18:47,728 INFO L136 LiptonReduction]: Total number of compositions: 241 [2023-08-30 14:18:47,740 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:18:47,745 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;@38d1b387, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:18:47,745 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-08-30 14:18:47,748 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:18:47,748 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:18:47,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:18:47,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:18:47,750 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:18:47,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:18:47,754 INFO L85 PathProgramCache]: Analyzing trace with hash 35072, now seen corresponding path program 1 times [2023-08-30 14:18:47,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:18:47,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701249584] [2023-08-30 14:18:47,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:18:47,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:18:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:18:47,938 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 14:18:47,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:18:47,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701249584] [2023-08-30 14:18:47,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701249584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:18:47,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:18:47,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:18:47,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424715028] [2023-08-30 14:18:47,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:18:47,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:18:47,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:18:47,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:18:47,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:18:47,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 525 [2023-08-30 14:18:47,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 119 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 0 states have call successors, (0), 0 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 14:18:47,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:18:47,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 525 [2023-08-30 14:18:47,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:18:48,281 INFO L130 PetriNetUnfolder]: 1078/2231 cut-off events. [2023-08-30 14:18:48,283 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:18:48,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4268 conditions, 2231 events. 1078/2231 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14691 event pairs, 924 based on Foata normal form. 268/1802 useless extension candidates. Maximal degree in co-relation 4153. Up to 2029 conditions per place. [2023-08-30 14:18:48,296 INFO L137 encePairwiseOnDemand]: 491/525 looper letters, 73 selfloop transitions, 1 changer transitions 0/86 dead transitions. [2023-08-30 14:18:48,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 86 transitions, 328 flow [2023-08-30 14:18:48,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:18:48,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:18:48,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 818 transitions. [2023-08-30 14:18:48,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5193650793650794 [2023-08-30 14:18:48,316 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 818 transitions. [2023-08-30 14:18:48,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 818 transitions. [2023-08-30 14:18:48,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:18:48,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 818 transitions. [2023-08-30 14:18:48,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 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 14:18:48,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 525.0) internal successors, (2100), 4 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 14:18:48,336 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 525.0) internal successors, (2100), 4 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 14:18:48,338 INFO L175 Difference]: Start difference. First operand has 85 places, 119 transitions, 246 flow. Second operand 3 states and 818 transitions. [2023-08-30 14:18:48,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 86 transitions, 328 flow [2023-08-30 14:18:48,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 86 transitions, 328 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:18:48,345 INFO L231 Difference]: Finished difference. Result has 85 places, 86 transitions, 182 flow [2023-08-30 14:18:48,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=525, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=85, PETRI_TRANSITIONS=86} [2023-08-30 14:18:48,351 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 0 predicate places. [2023-08-30 14:18:48,352 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 86 transitions, 182 flow [2023-08-30 14:18:48,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 0 states have call successors, (0), 0 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 14:18:48,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:18:48,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:18:48,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:18:48,354 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:18:48,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:18:48,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1046270261, now seen corresponding path program 1 times [2023-08-30 14:18:48,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:18:48,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516180038] [2023-08-30 14:18:48,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:18:48,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:18:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:18:48,425 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 14:18:48,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:18:48,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516180038] [2023-08-30 14:18:48,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516180038] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:18:48,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:18:48,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:18:48,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072957960] [2023-08-30 14:18:48,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:18:48,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:18:48,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:18:48,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:18:48,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:18:48,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 525 [2023-08-30 14:18:48,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 86 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 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 14:18:48,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:18:48,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 525 [2023-08-30 14:18:48,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:18:48,681 INFO L130 PetriNetUnfolder]: 1078/2232 cut-off events. [2023-08-30 14:18:48,682 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:18:48,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4272 conditions, 2232 events. 1078/2232 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14661 event pairs, 924 based on Foata normal form. 0/1535 useless extension candidates. Maximal degree in co-relation 4265. Up to 2030 conditions per place. [2023-08-30 14:18:48,691 INFO L137 encePairwiseOnDemand]: 522/525 looper letters, 73 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2023-08-30 14:18:48,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 87 transitions, 334 flow [2023-08-30 14:18:48,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:18:48,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:18:48,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 787 transitions. [2023-08-30 14:18:48,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4996825396825397 [2023-08-30 14:18:48,694 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 787 transitions. [2023-08-30 14:18:48,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 787 transitions. [2023-08-30 14:18:48,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:18:48,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 787 transitions. [2023-08-30 14:18:48,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 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 14:18:48,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 525.0) internal successors, (2100), 4 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 14:18:48,700 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 525.0) internal successors, (2100), 4 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 14:18:48,700 INFO L175 Difference]: Start difference. First operand has 85 places, 86 transitions, 182 flow. Second operand 3 states and 787 transitions. [2023-08-30 14:18:48,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 87 transitions, 334 flow [2023-08-30 14:18:48,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 87 transitions, 333 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:18:48,703 INFO L231 Difference]: Finished difference. Result has 87 places, 87 transitions, 193 flow [2023-08-30 14:18:48,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=525, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=87, PETRI_TRANSITIONS=87} [2023-08-30 14:18:48,704 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 2 predicate places. [2023-08-30 14:18:48,704 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 87 transitions, 193 flow [2023-08-30 14:18:48,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 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 14:18:48,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:18:48,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:18:48,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:18:48,706 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:18:48,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:18:48,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1886971998, now seen corresponding path program 1 times [2023-08-30 14:18:48,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:18:48,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035674933] [2023-08-30 14:18:48,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:18:48,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:18:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:18:48,759 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 14:18:48,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:18:48,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035674933] [2023-08-30 14:18:48,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035674933] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:18:48,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291776454] [2023-08-30 14:18:48,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:18:48,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:18:48,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:18:48,765 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 14:18:48,798 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 14:18:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:18:48,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:18:48,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:18:48,891 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 14:18:48,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:18:48,906 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 14:18:48,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291776454] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:18:48,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:18:48,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 14:18:48,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994725066] [2023-08-30 14:18:48,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:18:48,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:18:48,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:18:48,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:18:48,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:18:48,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 525 [2023-08-30 14:18:48,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 237.5) internal successors, (1425), 6 states have internal predecessors, (1425), 0 states have call successors, (0), 0 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 14:18:48,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:18:48,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 525 [2023-08-30 14:18:48,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:18:49,241 INFO L130 PetriNetUnfolder]: 1078/2235 cut-off events. [2023-08-30 14:18:49,241 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:18:49,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4287 conditions, 2235 events. 1078/2235 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14690 event pairs, 924 based on Foata normal form. 0/1538 useless extension candidates. Maximal degree in co-relation 4278. Up to 2030 conditions per place. [2023-08-30 14:18:49,252 INFO L137 encePairwiseOnDemand]: 522/525 looper letters, 73 selfloop transitions, 5 changer transitions 0/90 dead transitions. [2023-08-30 14:18:49,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 90 transitions, 361 flow [2023-08-30 14:18:49,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:18:49,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:18:49,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1497 transitions. [2023-08-30 14:18:49,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47523809523809524 [2023-08-30 14:18:49,256 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1497 transitions. [2023-08-30 14:18:49,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1497 transitions. [2023-08-30 14:18:49,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:18:49,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1497 transitions. [2023-08-30 14:18:49,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 249.5) internal successors, (1497), 6 states have internal predecessors, (1497), 0 states have call successors, (0), 0 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 14:18:49,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 525.0) internal successors, (3675), 7 states have internal predecessors, (3675), 0 states have call successors, (0), 0 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 14:18:49,267 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 525.0) internal successors, (3675), 7 states have internal predecessors, (3675), 0 states have call successors, (0), 0 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 14:18:49,267 INFO L175 Difference]: Start difference. First operand has 87 places, 87 transitions, 193 flow. Second operand 6 states and 1497 transitions. [2023-08-30 14:18:49,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 90 transitions, 361 flow [2023-08-30 14:18:49,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 90 transitions, 357 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:18:49,270 INFO L231 Difference]: Finished difference. Result has 94 places, 90 transitions, 225 flow [2023-08-30 14:18:49,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=525, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=225, PETRI_PLACES=94, PETRI_TRANSITIONS=90} [2023-08-30 14:18:49,271 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 9 predicate places. [2023-08-30 14:18:49,271 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 90 transitions, 225 flow [2023-08-30 14:18:49,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 237.5) internal successors, (1425), 6 states have internal predecessors, (1425), 0 states have call successors, (0), 0 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 14:18:49,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:18:49,273 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-30 14:18:49,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 14:18:49,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:18:49,478 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:18:49,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:18:49,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1509000283, now seen corresponding path program 1 times [2023-08-30 14:18:49,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:18:49,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787390035] [2023-08-30 14:18:49,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:18:49,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:18:49,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:18:49,602 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:18:49,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:18:49,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787390035] [2023-08-30 14:18:49,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787390035] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:18:49,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:18:49,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:18:49,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016580184] [2023-08-30 14:18:49,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:18:49,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:18:49,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:18:49,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:18:49,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:18:49,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 525 [2023-08-30 14:18:49,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 90 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 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 14:18:49,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:18:49,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 525 [2023-08-30 14:18:49,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:18:49,880 INFO L130 PetriNetUnfolder]: 1033/2119 cut-off events. [2023-08-30 14:18:49,881 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 14:18:49,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4068 conditions, 2119 events. 1033/2119 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 14117 event pairs, 410 based on Foata normal form. 0/1505 useless extension candidates. Maximal degree in co-relation 4055. Up to 1880 conditions per place. [2023-08-30 14:18:49,890 INFO L137 encePairwiseOnDemand]: 520/525 looper letters, 97 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2023-08-30 14:18:49,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 111 transitions, 465 flow [2023-08-30 14:18:49,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:18:49,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:18:49,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 809 transitions. [2023-08-30 14:18:49,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5136507936507937 [2023-08-30 14:18:49,893 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 809 transitions. [2023-08-30 14:18:49,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 809 transitions. [2023-08-30 14:18:49,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:18:49,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 809 transitions. [2023-08-30 14:18:49,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 269.6666666666667) internal successors, (809), 3 states have internal predecessors, (809), 0 states have call successors, (0), 0 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 14:18:49,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 525.0) internal successors, (2100), 4 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 14:18:49,899 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 525.0) internal successors, (2100), 4 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 14:18:49,899 INFO L175 Difference]: Start difference. First operand has 94 places, 90 transitions, 225 flow. Second operand 3 states and 809 transitions. [2023-08-30 14:18:49,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 111 transitions, 465 flow [2023-08-30 14:18:49,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 111 transitions, 451 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:18:49,903 INFO L231 Difference]: Finished difference. Result has 94 places, 88 transitions, 215 flow [2023-08-30 14:18:49,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=525, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2023-08-30 14:18:49,904 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 9 predicate places. [2023-08-30 14:18:49,904 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 215 flow [2023-08-30 14:18:49,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 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 14:18:49,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:18:49,905 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-30 14:18:49,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:18:49,905 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:18:49,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:18:49,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1549598828, now seen corresponding path program 1 times [2023-08-30 14:18:49,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:18:49,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549355997] [2023-08-30 14:18:49,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:18:49,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:18:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:18:49,984 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:18:49,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:18:49,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549355997] [2023-08-30 14:18:49,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549355997] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:18:49,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188362169] [2023-08-30 14:18:49,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:18:49,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:18:49,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:18:49,986 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 14:18:49,996 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 14:18:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:18:50,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:18:50,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:18:50,086 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:18:50,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:18:50,140 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:18:50,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188362169] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:18:50,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:18:50,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-30 14:18:50,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810942871] [2023-08-30 14:18:50,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:18:50,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 14:18:50,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:18:50,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 14:18:50,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 14:18:50,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 525 [2023-08-30 14:18:50,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 215 flow. Second operand has 12 states, 12 states have (on average 237.25) internal successors, (2847), 12 states have internal predecessors, (2847), 0 states have call successors, (0), 0 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 14:18:50,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:18:50,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 525 [2023-08-30 14:18:50,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:18:50,451 INFO L130 PetriNetUnfolder]: 1033/2101 cut-off events. [2023-08-30 14:18:50,451 INFO L131 PetriNetUnfolder]: For 119/119 co-relation queries the response was YES. [2023-08-30 14:18:50,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4116 conditions, 2101 events. 1033/2101 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 13601 event pairs, 882 based on Foata normal form. 6/1507 useless extension candidates. Maximal degree in co-relation 4102. Up to 1901 conditions per place. [2023-08-30 14:18:50,462 INFO L137 encePairwiseOnDemand]: 522/525 looper letters, 71 selfloop transitions, 11 changer transitions 0/94 dead transitions. [2023-08-30 14:18:50,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 94 transitions, 415 flow [2023-08-30 14:18:50,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:18:50,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:18:50,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2920 transitions. [2023-08-30 14:18:50,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634920634920635 [2023-08-30 14:18:50,483 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2920 transitions. [2023-08-30 14:18:50,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2920 transitions. [2023-08-30 14:18:50,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:18:50,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2920 transitions. [2023-08-30 14:18:50,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 243.33333333333334) internal successors, (2920), 12 states have internal predecessors, (2920), 0 states have call successors, (0), 0 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 14:18:50,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 525.0) internal successors, (6825), 13 states have internal predecessors, (6825), 0 states have call successors, (0), 0 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 14:18:50,502 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 525.0) internal successors, (6825), 13 states have internal predecessors, (6825), 0 states have call successors, (0), 0 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 14:18:50,502 INFO L175 Difference]: Start difference. First operand has 94 places, 88 transitions, 215 flow. Second operand 12 states and 2920 transitions. [2023-08-30 14:18:50,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 94 transitions, 415 flow [2023-08-30 14:18:50,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 94 transitions, 411 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:18:50,513 INFO L231 Difference]: Finished difference. Result has 109 places, 94 transitions, 295 flow [2023-08-30 14:18:50,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=525, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=295, PETRI_PLACES=109, PETRI_TRANSITIONS=94} [2023-08-30 14:18:50,515 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 24 predicate places. [2023-08-30 14:18:50,515 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 94 transitions, 295 flow [2023-08-30 14:18:50,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 237.25) internal successors, (2847), 12 states have internal predecessors, (2847), 0 states have call successors, (0), 0 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 14:18:50,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:18:50,517 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-30 14:18:50,529 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 14:18:50,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:18:50,725 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:18:50,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:18:50,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1385203828, now seen corresponding path program 2 times [2023-08-30 14:18:50,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:18:50,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369806328] [2023-08-30 14:18:50,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:18:50,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:18:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:18:50,771 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:18:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:18:50,820 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:18:50,820 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:18:50,821 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2023-08-30 14:18:50,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2023-08-30 14:18:50,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2023-08-30 14:18:50,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2023-08-30 14:18:50,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2023-08-30 14:18:50,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2023-08-30 14:18:50,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2023-08-30 14:18:50,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2023-08-30 14:18:50,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2023-08-30 14:18:50,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2023-08-30 14:18:50,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2023-08-30 14:18:50,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2023-08-30 14:18:50,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2023-08-30 14:18:50,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2023-08-30 14:18:50,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2023-08-30 14:18:50,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2023-08-30 14:18:50,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2023-08-30 14:18:50,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2023-08-30 14:18:50,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2023-08-30 14:18:50,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2023-08-30 14:18:50,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2023-08-30 14:18:50,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2023-08-30 14:18:50,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2023-08-30 14:18:50,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2023-08-30 14:18:50,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2023-08-30 14:18:50,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2023-08-30 14:18:50,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2023-08-30 14:18:50,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2023-08-30 14:18:50,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2023-08-30 14:18:50,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:18:50,835 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-08-30 14:18:50,837 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:18:50,837 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:18:50,881 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:18:50,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 311 places, 366 transitions, 750 flow [2023-08-30 14:18:50,954 INFO L130 PetriNetUnfolder]: 118/702 cut-off events. [2023-08-30 14:18:50,954 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:18:50,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 702 events. 118/702 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3747 event pairs, 0 based on Foata normal form. 0/526 useless extension candidates. Maximal degree in co-relation 436. Up to 12 conditions per place. [2023-08-30 14:18:50,964 INFO L82 GeneralOperation]: Start removeDead. Operand has 311 places, 366 transitions, 750 flow [2023-08-30 14:18:50,973 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 311 places, 366 transitions, 750 flow [2023-08-30 14:18:50,974 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:18:50,974 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 311 places, 366 transitions, 750 flow [2023-08-30 14:18:50,974 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 311 places, 366 transitions, 750 flow [2023-08-30 14:18:50,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 311 places, 366 transitions, 750 flow [2023-08-30 14:18:51,049 INFO L130 PetriNetUnfolder]: 118/702 cut-off events. [2023-08-30 14:18:51,049 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:18:51,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 702 events. 118/702 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3747 event pairs, 0 based on Foata normal form. 0/526 useless extension candidates. Maximal degree in co-relation 436. Up to 12 conditions per place. [2023-08-30 14:18:51,083 INFO L119 LiptonReduction]: Number of co-enabled transitions 67040 [2023-08-30 14:18:54,884 INFO L134 LiptonReduction]: Checked pairs total: 119251 [2023-08-30 14:18:54,884 INFO L136 LiptonReduction]: Total number of compositions: 297 [2023-08-30 14:18:54,886 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:18:54,892 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;@38d1b387, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:18:54,892 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-08-30 14:18:54,893 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 14:18:54,893 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:18:54,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:18:54,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:18:54,894 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:18:54,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:18:54,894 INFO L85 PathProgramCache]: Analyzing trace with hash 58875, now seen corresponding path program 1 times [2023-08-30 14:18:54,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:18:54,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919275626] [2023-08-30 14:18:54,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:18:54,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:18:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:18:54,928 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 14:18:54,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:18:54,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919275626] [2023-08-30 14:18:54,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919275626] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:18:54,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:18:54,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:18:54,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448447580] [2023-08-30 14:18:54,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:18:54,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:18:54,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:18:54,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:18:54,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:18:54,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 663 [2023-08-30 14:18:54,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 161 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 304.6666666666667) internal successors, (914), 3 states have internal predecessors, (914), 0 states have call successors, (0), 0 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 14:18:54,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:18:54,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 663 [2023-08-30 14:18:54,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:18:59,884 INFO L130 PetriNetUnfolder]: 53493/80833 cut-off events. [2023-08-30 14:18:59,884 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2023-08-30 14:19:00,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158175 conditions, 80833 events. 53493/80833 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 2463. Compared 618286 event pairs, 48250 based on Foata normal form. 8884/62781 useless extension candidates. Maximal degree in co-relation 74499. Up to 77201 conditions per place. [2023-08-30 14:19:00,363 INFO L137 encePairwiseOnDemand]: 616/663 looper letters, 102 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2023-08-30 14:19:00,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 119 transitions, 464 flow [2023-08-30 14:19:00,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:19:00,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:19:00,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1062 transitions. [2023-08-30 14:19:00,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5339366515837104 [2023-08-30 14:19:00,367 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1062 transitions. [2023-08-30 14:19:00,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1062 transitions. [2023-08-30 14:19:00,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:00,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1062 transitions. [2023-08-30 14:19:00,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 354.0) internal successors, (1062), 3 states have internal predecessors, (1062), 0 states have call successors, (0), 0 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 14:19:00,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 663.0) internal successors, (2652), 4 states have internal predecessors, (2652), 0 states have call successors, (0), 0 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 14:19:00,374 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 663.0) internal successors, (2652), 4 states have internal predecessors, (2652), 0 states have call successors, (0), 0 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 14:19:00,374 INFO L175 Difference]: Start difference. First operand has 114 places, 161 transitions, 340 flow. Second operand 3 states and 1062 transitions. [2023-08-30 14:19:00,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 119 transitions, 464 flow [2023-08-30 14:19:00,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 119 transitions, 464 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:19:00,378 INFO L231 Difference]: Finished difference. Result has 116 places, 119 transitions, 268 flow [2023-08-30 14:19:00,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=116, PETRI_TRANSITIONS=119} [2023-08-30 14:19:00,380 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 2 predicate places. [2023-08-30 14:19:00,380 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 119 transitions, 268 flow [2023-08-30 14:19:00,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 304.6666666666667) internal successors, (914), 3 states have internal predecessors, (914), 0 states have call successors, (0), 0 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 14:19:00,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:00,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:19:00,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:19:00,381 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:19:00,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:00,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1828727, now seen corresponding path program 1 times [2023-08-30 14:19:00,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:00,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874567872] [2023-08-30 14:19:00,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:00,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:00,413 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 14:19:00,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:00,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874567872] [2023-08-30 14:19:00,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874567872] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:19:00,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301195166] [2023-08-30 14:19:00,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:00,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:19:00,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:19:00,415 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 14:19:00,418 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 14:19:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:00,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:19:00,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:19:00,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:19:00,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:19:00,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301195166] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:19:00,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:19:00,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:19:00,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149899843] [2023-08-30 14:19:00,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:19:00,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:19:00,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:00,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:19:00,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:19:00,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 663 [2023-08-30 14:19:00,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 119 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 304.75) internal successors, (1219), 4 states have internal predecessors, (1219), 0 states have call successors, (0), 0 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 14:19:00,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:00,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 663 [2023-08-30 14:19:00,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:04,463 INFO L130 PetriNetUnfolder]: 53493/80832 cut-off events. [2023-08-30 14:19:04,463 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2023-08-30 14:19:04,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158180 conditions, 80832 events. 53493/80832 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 2463. Compared 618156 event pairs, 48250 based on Foata normal form. 0/53897 useless extension candidates. Maximal degree in co-relation 158167. Up to 77199 conditions per place. [2023-08-30 14:19:05,120 INFO L137 encePairwiseOnDemand]: 660/663 looper letters, 101 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2023-08-30 14:19:05,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 118 transitions, 470 flow [2023-08-30 14:19:05,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:19:05,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:19:05,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1320 transitions. [2023-08-30 14:19:05,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.497737556561086 [2023-08-30 14:19:05,130 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1320 transitions. [2023-08-30 14:19:05,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1320 transitions. [2023-08-30 14:19:05,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:05,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1320 transitions. [2023-08-30 14:19:05,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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 14:19:05,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 663.0) internal successors, (3315), 5 states have internal predecessors, (3315), 0 states have call successors, (0), 0 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 14:19:05,143 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 663.0) internal successors, (3315), 5 states have internal predecessors, (3315), 0 states have call successors, (0), 0 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 14:19:05,143 INFO L175 Difference]: Start difference. First operand has 116 places, 119 transitions, 268 flow. Second operand 4 states and 1320 transitions. [2023-08-30 14:19:05,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 118 transitions, 470 flow [2023-08-30 14:19:05,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 118 transitions, 466 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:19:05,146 INFO L231 Difference]: Finished difference. Result has 117 places, 118 transitions, 264 flow [2023-08-30 14:19:05,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=117, PETRI_TRANSITIONS=118} [2023-08-30 14:19:05,147 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 3 predicate places. [2023-08-30 14:19:05,148 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 118 transitions, 264 flow [2023-08-30 14:19:05,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 304.75) internal successors, (1219), 4 states have internal predecessors, (1219), 0 states have call successors, (0), 0 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 14:19:05,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:05,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:19:05,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 14:19:05,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:19:05,354 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:19:05,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:05,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1011601119, now seen corresponding path program 1 times [2023-08-30 14:19:05,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:05,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448496775] [2023-08-30 14:19:05,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:05,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:05,407 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 14:19:05,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:05,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448496775] [2023-08-30 14:19:05,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448496775] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:19:05,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034121702] [2023-08-30 14:19:05,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:05,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:19:05,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:19:05,411 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 14:19:05,430 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 14:19:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:05,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:19:05,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:19:05,487 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 14:19:05,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:19:05,501 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 14:19:05,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034121702] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:19:05,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:19:05,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:19:05,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132515524] [2023-08-30 14:19:05,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:19:05,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:19:05,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:05,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:19:05,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:19:05,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 663 [2023-08-30 14:19:05,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 118 transitions, 264 flow. Second operand has 7 states, 7 states have (on average 304.57142857142856) internal successors, (2132), 7 states have internal predecessors, (2132), 0 states have call successors, (0), 0 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 14:19:05,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:05,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 663 [2023-08-30 14:19:05,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:09,536 INFO L130 PetriNetUnfolder]: 53493/80835 cut-off events. [2023-08-30 14:19:09,536 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2023-08-30 14:19:09,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158189 conditions, 80835 events. 53493/80835 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 2463. Compared 618190 event pairs, 48250 based on Foata normal form. 0/53900 useless extension candidates. Maximal degree in co-relation 158176. Up to 77200 conditions per place. [2023-08-30 14:19:09,928 INFO L137 encePairwiseOnDemand]: 660/663 looper letters, 101 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2023-08-30 14:19:09,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 121 transitions, 488 flow [2023-08-30 14:19:09,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:19:09,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:19:09,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1927 transitions. [2023-08-30 14:19:09,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4844142785319256 [2023-08-30 14:19:09,934 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1927 transitions. [2023-08-30 14:19:09,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1927 transitions. [2023-08-30 14:19:09,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:09,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1927 transitions. [2023-08-30 14:19:09,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 321.1666666666667) internal successors, (1927), 6 states have internal predecessors, (1927), 0 states have call successors, (0), 0 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 14:19:09,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 663.0) internal successors, (4641), 7 states have internal predecessors, (4641), 0 states have call successors, (0), 0 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 14:19:09,961 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 663.0) internal successors, (4641), 7 states have internal predecessors, (4641), 0 states have call successors, (0), 0 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 14:19:09,961 INFO L175 Difference]: Start difference. First operand has 117 places, 118 transitions, 264 flow. Second operand 6 states and 1927 transitions. [2023-08-30 14:19:09,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 121 transitions, 488 flow [2023-08-30 14:19:09,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 121 transitions, 485 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:19:09,965 INFO L231 Difference]: Finished difference. Result has 123 places, 121 transitions, 297 flow [2023-08-30 14:19:09,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=297, PETRI_PLACES=123, PETRI_TRANSITIONS=121} [2023-08-30 14:19:09,966 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 9 predicate places. [2023-08-30 14:19:09,966 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 121 transitions, 297 flow [2023-08-30 14:19:09,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 304.57142857142856) internal successors, (2132), 7 states have internal predecessors, (2132), 0 states have call successors, (0), 0 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 14:19:09,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:09,968 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-30 14:19:09,981 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 14:19:10,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:19:10,174 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:19:10,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:10,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1356917348, now seen corresponding path program 1 times [2023-08-30 14:19:10,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:10,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371106536] [2023-08-30 14:19:10,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:10,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:19:10,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:10,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371106536] [2023-08-30 14:19:10,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371106536] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:19:10,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:19:10,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:19:10,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952360208] [2023-08-30 14:19:10,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:19:10,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:19:10,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:10,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:19:10,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:19:10,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 663 [2023-08-30 14:19:10,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 121 transitions, 297 flow. Second operand has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 0 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 14:19:10,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:10,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 663 [2023-08-30 14:19:10,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:14,502 INFO L130 PetriNetUnfolder]: 53116/80911 cut-off events. [2023-08-30 14:19:14,502 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2023-08-30 14:19:14,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158178 conditions, 80911 events. 53116/80911 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 2464. Compared 630988 event pairs, 23364 based on Foata normal form. 0/53998 useless extension candidates. Maximal degree in co-relation 158161. Up to 77042 conditions per place. [2023-08-30 14:19:14,890 INFO L137 encePairwiseOnDemand]: 658/663 looper letters, 130 selfloop transitions, 2 changer transitions 0/147 dead transitions. [2023-08-30 14:19:14,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 147 transitions, 613 flow [2023-08-30 14:19:14,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:19:14,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:19:14,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1043 transitions. [2023-08-30 14:19:14,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5243841126194068 [2023-08-30 14:19:14,893 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1043 transitions. [2023-08-30 14:19:14,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1043 transitions. [2023-08-30 14:19:14,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:14,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1043 transitions. [2023-08-30 14:19:14,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 347.6666666666667) internal successors, (1043), 3 states have internal predecessors, (1043), 0 states have call successors, (0), 0 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 14:19:14,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 663.0) internal successors, (2652), 4 states have internal predecessors, (2652), 0 states have call successors, (0), 0 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 14:19:14,899 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 663.0) internal successors, (2652), 4 states have internal predecessors, (2652), 0 states have call successors, (0), 0 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 14:19:14,899 INFO L175 Difference]: Start difference. First operand has 123 places, 121 transitions, 297 flow. Second operand 3 states and 1043 transitions. [2023-08-30 14:19:14,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 147 transitions, 613 flow [2023-08-30 14:19:14,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 147 transitions, 599 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:19:14,903 INFO L231 Difference]: Finished difference. Result has 125 places, 122 transitions, 299 flow [2023-08-30 14:19:14,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=299, PETRI_PLACES=125, PETRI_TRANSITIONS=122} [2023-08-30 14:19:14,903 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 11 predicate places. [2023-08-30 14:19:14,904 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 122 transitions, 299 flow [2023-08-30 14:19:14,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 0 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 14:19:14,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:14,904 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:19:14,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:19:14,905 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:19:14,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:14,905 INFO L85 PathProgramCache]: Analyzing trace with hash -860150113, now seen corresponding path program 1 times [2023-08-30 14:19:14,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:14,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173102231] [2023-08-30 14:19:14,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:14,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:14,950 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-30 14:19:14,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:14,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173102231] [2023-08-30 14:19:14,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173102231] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:19:14,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:19:14,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:19:14,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924171358] [2023-08-30 14:19:14,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:19:14,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:19:14,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:14,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:19:14,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:19:14,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 663 [2023-08-30 14:19:14,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 122 transitions, 299 flow. Second operand has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 0 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 14:19:14,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:14,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 663 [2023-08-30 14:19:14,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:19,096 INFO L130 PetriNetUnfolder]: 51146/79712 cut-off events. [2023-08-30 14:19:19,097 INFO L131 PetriNetUnfolder]: For 718/718 co-relation queries the response was YES. [2023-08-30 14:19:19,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157013 conditions, 79712 events. 51146/79712 cut-off events. For 718/718 co-relation queries the response was YES. Maximal size of possible extension queue 2255. Compared 656869 event pairs, 2666 based on Foata normal form. 0/54579 useless extension candidates. Maximal degree in co-relation 156995. Up to 70898 conditions per place. [2023-08-30 14:19:19,524 INFO L137 encePairwiseOnDemand]: 659/663 looper letters, 150 selfloop transitions, 4 changer transitions 0/169 dead transitions. [2023-08-30 14:19:19,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 169 transitions, 699 flow [2023-08-30 14:19:19,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:19:19,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:19:19,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1059 transitions. [2023-08-30 14:19:19,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5324283559577677 [2023-08-30 14:19:19,528 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1059 transitions. [2023-08-30 14:19:19,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1059 transitions. [2023-08-30 14:19:19,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:19,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1059 transitions. [2023-08-30 14:19:19,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:19:19,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 663.0) internal successors, (2652), 4 states have internal predecessors, (2652), 0 states have call successors, (0), 0 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 14:19:19,533 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 663.0) internal successors, (2652), 4 states have internal predecessors, (2652), 0 states have call successors, (0), 0 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 14:19:19,533 INFO L175 Difference]: Start difference. First operand has 125 places, 122 transitions, 299 flow. Second operand 3 states and 1059 transitions. [2023-08-30 14:19:19,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 169 transitions, 699 flow [2023-08-30 14:19:19,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 169 transitions, 697 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:19:19,539 INFO L231 Difference]: Finished difference. Result has 126 places, 122 transitions, 309 flow [2023-08-30 14:19:19,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=309, PETRI_PLACES=126, PETRI_TRANSITIONS=122} [2023-08-30 14:19:19,540 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 12 predicate places. [2023-08-30 14:19:19,540 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 122 transitions, 309 flow [2023-08-30 14:19:19,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 0 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 14:19:19,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:19,540 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:19:19,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 14:19:19,541 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:19:19,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:19,541 INFO L85 PathProgramCache]: Analyzing trace with hash -860150114, now seen corresponding path program 1 times [2023-08-30 14:19:19,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:19,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999808860] [2023-08-30 14:19:19,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:19,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:19,603 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 14:19:19,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:19,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999808860] [2023-08-30 14:19:19,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999808860] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:19:19,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757051463] [2023-08-30 14:19:19,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:19,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:19:19,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:19:19,609 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 14:19:19,611 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 14:19:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:19,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:19:19,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:19:19,849 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 14:19:19,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:19:19,902 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 14:19:19,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757051463] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:19:19,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:19:19,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 14:19:19,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878762842] [2023-08-30 14:19:19,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:19:19,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:19:19,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:19,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:19:19,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 14:19:19,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 663 [2023-08-30 14:19:19,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 122 transitions, 309 flow. Second operand has 13 states, 13 states have (on average 304.46153846153845) internal successors, (3958), 13 states have internal predecessors, (3958), 0 states have call successors, (0), 0 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 14:19:19,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:19,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 663 [2023-08-30 14:19:19,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:24,315 INFO L130 PetriNetUnfolder]: 52706/79239 cut-off events. [2023-08-30 14:19:24,316 INFO L131 PetriNetUnfolder]: For 5372/5372 co-relation queries the response was YES. [2023-08-30 14:19:24,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158265 conditions, 79239 events. 52706/79239 cut-off events. For 5372/5372 co-relation queries the response was YES. Maximal size of possible extension queue 2405. Compared 597692 event pairs, 47147 based on Foata normal form. 6/54402 useless extension candidates. Maximal degree in co-relation 158247. Up to 75409 conditions per place. [2023-08-30 14:19:24,749 INFO L137 encePairwiseOnDemand]: 660/663 looper letters, 102 selfloop transitions, 11 changer transitions 0/128 dead transitions. [2023-08-30 14:19:24,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 128 transitions, 571 flow [2023-08-30 14:19:24,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:19:24,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:19:24,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3753 transitions. [2023-08-30 14:19:24,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47171945701357465 [2023-08-30 14:19:24,761 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3753 transitions. [2023-08-30 14:19:24,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3753 transitions. [2023-08-30 14:19:24,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:24,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3753 transitions. [2023-08-30 14:19:24,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 312.75) internal successors, (3753), 12 states have internal predecessors, (3753), 0 states have call successors, (0), 0 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 14:19:24,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 663.0) internal successors, (8619), 13 states have internal predecessors, (8619), 0 states have call successors, (0), 0 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 14:19:24,778 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 663.0) internal successors, (8619), 13 states have internal predecessors, (8619), 0 states have call successors, (0), 0 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 14:19:24,779 INFO L175 Difference]: Start difference. First operand has 126 places, 122 transitions, 309 flow. Second operand 12 states and 3753 transitions. [2023-08-30 14:19:24,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 128 transitions, 571 flow [2023-08-30 14:19:24,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 128 transitions, 567 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:19:24,784 INFO L231 Difference]: Finished difference. Result has 142 places, 128 transitions, 389 flow [2023-08-30 14:19:24,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=389, PETRI_PLACES=142, PETRI_TRANSITIONS=128} [2023-08-30 14:19:24,785 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 28 predicate places. [2023-08-30 14:19:24,785 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 128 transitions, 389 flow [2023-08-30 14:19:24,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 304.46153846153845) internal successors, (3958), 13 states have internal predecessors, (3958), 0 states have call successors, (0), 0 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 14:19:24,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:24,786 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:19:24,791 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 14:19:24,991 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,SelfDestructingSolverStorable11 [2023-08-30 14:19:24,991 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:19:24,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:24,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1451731682, now seen corresponding path program 2 times [2023-08-30 14:19:24,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:24,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589965365] [2023-08-30 14:19:24,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:24,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:25,056 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:19:25,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:25,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589965365] [2023-08-30 14:19:25,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589965365] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:19:25,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921739413] [2023-08-30 14:19:25,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:19:25,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:19:25,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:19:25,057 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 14:19:25,059 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 14:19:25,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 14:19:25,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:19:25,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:19:25,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:19:25,155 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:19:25,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:19:25,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921739413] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:19:25,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:19:25,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 14:19:25,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602939067] [2023-08-30 14:19:25,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:19:25,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:19:25,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:25,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:19:25,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:19:25,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 663 [2023-08-30 14:19:25,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 128 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 306.25) internal successors, (1225), 4 states have internal predecessors, (1225), 0 states have call successors, (0), 0 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 14:19:25,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:25,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 663 [2023-08-30 14:19:25,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:29,863 INFO L130 PetriNetUnfolder]: 50860/77461 cut-off events. [2023-08-30 14:19:29,863 INFO L131 PetriNetUnfolder]: For 3503/3503 co-relation queries the response was YES. [2023-08-30 14:19:30,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153767 conditions, 77461 events. 50860/77461 cut-off events. For 3503/3503 co-relation queries the response was YES. Maximal size of possible extension queue 2370. Compared 598361 event pairs, 22308 based on Foata normal form. 552/53532 useless extension candidates. Maximal degree in co-relation 153740. Up to 73723 conditions per place. [2023-08-30 14:19:30,388 INFO L137 encePairwiseOnDemand]: 660/663 looper letters, 134 selfloop transitions, 2 changer transitions 0/151 dead transitions. [2023-08-30 14:19:30,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 151 transitions, 705 flow [2023-08-30 14:19:30,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:19:30,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:19:30,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1343 transitions. [2023-08-30 14:19:30,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5064102564102564 [2023-08-30 14:19:30,391 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1343 transitions. [2023-08-30 14:19:30,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1343 transitions. [2023-08-30 14:19:30,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:30,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1343 transitions. [2023-08-30 14:19:30,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 335.75) internal successors, (1343), 4 states have internal predecessors, (1343), 0 states have call successors, (0), 0 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 14:19:30,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 663.0) internal successors, (3315), 5 states have internal predecessors, (3315), 0 states have call successors, (0), 0 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 14:19:30,398 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 663.0) internal successors, (3315), 5 states have internal predecessors, (3315), 0 states have call successors, (0), 0 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 14:19:30,398 INFO L175 Difference]: Start difference. First operand has 142 places, 128 transitions, 389 flow. Second operand 4 states and 1343 transitions. [2023-08-30 14:19:30,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 151 transitions, 705 flow [2023-08-30 14:19:30,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 151 transitions, 657 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 14:19:30,402 INFO L231 Difference]: Finished difference. Result has 139 places, 127 transitions, 341 flow [2023-08-30 14:19:30,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=341, PETRI_PLACES=139, PETRI_TRANSITIONS=127} [2023-08-30 14:19:30,403 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 25 predicate places. [2023-08-30 14:19:30,403 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 127 transitions, 341 flow [2023-08-30 14:19:30,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 306.25) internal successors, (1225), 4 states have internal predecessors, (1225), 0 states have call successors, (0), 0 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 14:19:30,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:30,404 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:19:30,415 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 14:19:30,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:19:30,611 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:19:30,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:30,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1858611877, now seen corresponding path program 1 times [2023-08-30 14:19:30,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:30,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695062647] [2023-08-30 14:19:30,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:30,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:30,831 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:19:30,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:30,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695062647] [2023-08-30 14:19:30,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695062647] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:19:30,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:19:30,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:19:30,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456884584] [2023-08-30 14:19:30,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:19:30,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:19:30,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:30,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:19:30,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:19:30,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 663 [2023-08-30 14:19:30,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 127 transitions, 341 flow. Second operand has 6 states, 6 states have (on average 292.6666666666667) internal successors, (1756), 6 states have internal predecessors, (1756), 0 states have call successors, (0), 0 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 14:19:30,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:30,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 663 [2023-08-30 14:19:30,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:19:39,264 INFO L130 PetriNetUnfolder]: 90278/136671 cut-off events. [2023-08-30 14:19:39,265 INFO L131 PetriNetUnfolder]: For 6385/6385 co-relation queries the response was YES. [2023-08-30 14:19:39,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274334 conditions, 136671 events. 90278/136671 cut-off events. For 6385/6385 co-relation queries the response was YES. Maximal size of possible extension queue 3986. Compared 1133747 event pairs, 16887 based on Foata normal form. 0/93136 useless extension candidates. Maximal degree in co-relation 274309. Up to 76428 conditions per place. [2023-08-30 14:19:40,167 INFO L137 encePairwiseOnDemand]: 646/663 looper letters, 358 selfloop transitions, 30 changer transitions 0/403 dead transitions. [2023-08-30 14:19:40,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 403 transitions, 1744 flow [2023-08-30 14:19:40,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:19:40,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:19:40,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2418 transitions. [2023-08-30 14:19:40,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210084033613446 [2023-08-30 14:19:40,172 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2418 transitions. [2023-08-30 14:19:40,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2418 transitions. [2023-08-30 14:19:40,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:19:40,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2418 transitions. [2023-08-30 14:19:40,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 345.42857142857144) internal successors, (2418), 7 states have internal predecessors, (2418), 0 states have call successors, (0), 0 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 14:19:40,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 663.0) internal successors, (5304), 8 states have internal predecessors, (5304), 0 states have call successors, (0), 0 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 14:19:40,182 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 663.0) internal successors, (5304), 8 states have internal predecessors, (5304), 0 states have call successors, (0), 0 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 14:19:40,182 INFO L175 Difference]: Start difference. First operand has 139 places, 127 transitions, 341 flow. Second operand 7 states and 2418 transitions. [2023-08-30 14:19:40,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 403 transitions, 1744 flow [2023-08-30 14:19:40,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 403 transitions, 1738 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:19:40,192 INFO L231 Difference]: Finished difference. Result has 148 places, 156 transitions, 546 flow [2023-08-30 14:19:40,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=546, PETRI_PLACES=148, PETRI_TRANSITIONS=156} [2023-08-30 14:19:40,193 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 34 predicate places. [2023-08-30 14:19:40,193 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 156 transitions, 546 flow [2023-08-30 14:19:40,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 292.6666666666667) internal successors, (1756), 6 states have internal predecessors, (1756), 0 states have call successors, (0), 0 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 14:19:40,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:40,194 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:19:40,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 14:19:40,194 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:19:40,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:40,195 INFO L85 PathProgramCache]: Analyzing trace with hash 750310693, now seen corresponding path program 1 times [2023-08-30 14:19:40,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:40,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654331686] [2023-08-30 14:19:40,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:40,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:19:40,216 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:19:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:19:40,243 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:19:40,244 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:19:40,244 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (34 of 35 remaining) [2023-08-30 14:19:40,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 35 remaining) [2023-08-30 14:19:40,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 35 remaining) [2023-08-30 14:19:40,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 35 remaining) [2023-08-30 14:19:40,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 35 remaining) [2023-08-30 14:19:40,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 35 remaining) [2023-08-30 14:19:40,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 35 remaining) [2023-08-30 14:19:40,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 35 remaining) [2023-08-30 14:19:40,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 35 remaining) [2023-08-30 14:19:40,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 35 remaining) [2023-08-30 14:19:40,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 35 remaining) [2023-08-30 14:19:40,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 35 remaining) [2023-08-30 14:19:40,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 35 remaining) [2023-08-30 14:19:40,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 35 remaining) [2023-08-30 14:19:40,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 35 remaining) [2023-08-30 14:19:40,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 35 remaining) [2023-08-30 14:19:40,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 35 remaining) [2023-08-30 14:19:40,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 35 remaining) [2023-08-30 14:19:40,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 35 remaining) [2023-08-30 14:19:40,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 35 remaining) [2023-08-30 14:19:40,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 35 remaining) [2023-08-30 14:19:40,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 35 remaining) [2023-08-30 14:19:40,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 35 remaining) [2023-08-30 14:19:40,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 35 remaining) [2023-08-30 14:19:40,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 35 remaining) [2023-08-30 14:19:40,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 35 remaining) [2023-08-30 14:19:40,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 35 remaining) [2023-08-30 14:19:40,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 35 remaining) [2023-08-30 14:19:40,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 35 remaining) [2023-08-30 14:19:40,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 35 remaining) [2023-08-30 14:19:40,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 35 remaining) [2023-08-30 14:19:40,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 35 remaining) [2023-08-30 14:19:40,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 35 remaining) [2023-08-30 14:19:40,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 35 remaining) [2023-08-30 14:19:40,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 35 remaining) [2023-08-30 14:19:40,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 14:19:40,249 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:19:40,250 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:19:40,250 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:19:40,291 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:19:40,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 380 places, 448 transitions, 926 flow [2023-08-30 14:19:40,394 INFO L130 PetriNetUnfolder]: 168/1009 cut-off events. [2023-08-30 14:19:40,394 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:19:40,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1037 conditions, 1009 events. 168/1009 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5674 event pairs, 1 based on Foata normal form. 0/757 useless extension candidates. Maximal degree in co-relation 710. Up to 16 conditions per place. [2023-08-30 14:19:40,409 INFO L82 GeneralOperation]: Start removeDead. Operand has 380 places, 448 transitions, 926 flow [2023-08-30 14:19:40,419 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 380 places, 448 transitions, 926 flow [2023-08-30 14:19:40,419 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:19:40,419 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 380 places, 448 transitions, 926 flow [2023-08-30 14:19:40,420 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 380 places, 448 transitions, 926 flow [2023-08-30 14:19:40,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 380 places, 448 transitions, 926 flow [2023-08-30 14:19:40,531 INFO L130 PetriNetUnfolder]: 168/1009 cut-off events. [2023-08-30 14:19:40,531 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:19:40,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1037 conditions, 1009 events. 168/1009 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5674 event pairs, 1 based on Foata normal form. 0/757 useless extension candidates. Maximal degree in co-relation 710. Up to 16 conditions per place. [2023-08-30 14:19:40,598 INFO L119 LiptonReduction]: Number of co-enabled transitions 120480 [2023-08-30 14:19:44,660 INFO L134 LiptonReduction]: Checked pairs total: 218371 [2023-08-30 14:19:44,660 INFO L136 LiptonReduction]: Total number of compositions: 361 [2023-08-30 14:19:44,661 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:19:44,661 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;@38d1b387, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:19:44,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-08-30 14:19:44,662 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 14:19:44,663 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:19:44,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:19:44,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:19:44,663 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 14:19:44,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:19:44,663 INFO L85 PathProgramCache]: Analyzing trace with hash 87364, now seen corresponding path program 1 times [2023-08-30 14:19:44,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:19:44,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665983880] [2023-08-30 14:19:44,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:19:44,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:19:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:19:44,681 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 14:19:44,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:19:44,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665983880] [2023-08-30 14:19:44,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665983880] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:19:44,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:19:44,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:19:44,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536496278] [2023-08-30 14:19:44,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:19:44,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:19:44,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:19:44,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:19:44,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:19:44,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 371 out of 809 [2023-08-30 14:19:44,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 199 transitions, 428 flow. Second operand has 3 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 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 14:19:44,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:19:44,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 371 of 809 [2023-08-30 14:19:44,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand