./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c --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/weaver/chl-name-comparator-subst.wvr.c -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 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 --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 14:48:48,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:48:48,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:48:48,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:48:48,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:48:48,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:48:48,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:48:48,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:48:48,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:48:48,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:48:48,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:48:48,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:48:48,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:48:48,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:48:48,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:48:48,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:48:48,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:48:48,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:48:48,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:48:48,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:48:48,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:48:48,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:48:48,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:48:48,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:48:48,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:48:48,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:48:48,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:48:48,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:48:48,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:48:48,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:48:48,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:48:48,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:48:48,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:48:48,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:48:48,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:48:48,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:48:48,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:48:48,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:48:48,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:48:48,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:48:48,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:48:48,458 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:48:48,482 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:48:48,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:48:48,483 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:48:48,483 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:48:48,484 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:48:48,484 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:48:48,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:48:48,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:48:48,484 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:48:48,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:48:48,485 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:48:48,485 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:48:48,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:48:48,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:48:48,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:48:48,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:48:48,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:48:48,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:48:48,486 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:48:48,486 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:48:48,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:48:48,487 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:48:48,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:48:48,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:48:48,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:48:48,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:48:48,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:48:48,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:48:48,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:48:48,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:48:48,488 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:48:48,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:48:48,488 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:48:48,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:48:48,488 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:48:48,489 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:48:48,489 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:48:48,489 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:48:48,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:48:48,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:48:48,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:48:48,737 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:48:48,737 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:48:48,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2023-08-30 14:48:49,720 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:48:49,880 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:48:49,880 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2023-08-30 14:48:49,887 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c3056e00/6f6b16e899cb4929b7c199375256c1de/FLAGfca4c9d67 [2023-08-30 14:48:49,905 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c3056e00/6f6b16e899cb4929b7c199375256c1de [2023-08-30 14:48:49,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:48:49,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:48:49,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:48:49,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:48:49,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:48:49,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:48:49" (1/1) ... [2023-08-30 14:48:49,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b10c3ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:48:49, skipping insertion in model container [2023-08-30 14:48:49,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:48:49" (1/1) ... [2023-08-30 14:48:49,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:48:49,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:48:50,068 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2023-08-30 14:48:50,073 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:48:50,079 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:48:50,103 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2023-08-30 14:48:50,106 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:48:50,115 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:48:50,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:48:50 WrapperNode [2023-08-30 14:48:50,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:48:50,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:48:50,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:48:50,117 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:48:50,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:48:50" (1/1) ... [2023-08-30 14:48:50,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:48:50" (1/1) ... [2023-08-30 14:48:50,165 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 366 [2023-08-30 14:48:50,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:48:50,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:48:50,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:48:50,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:48:50,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:48:50" (1/1) ... [2023-08-30 14:48:50,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:48:50" (1/1) ... [2023-08-30 14:48:50,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:48:50" (1/1) ... [2023-08-30 14:48:50,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:48:50" (1/1) ... [2023-08-30 14:48:50,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:48:50" (1/1) ... [2023-08-30 14:48:50,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:48:50" (1/1) ... [2023-08-30 14:48:50,202 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:48:50" (1/1) ... [2023-08-30 14:48:50,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:48:50" (1/1) ... [2023-08-30 14:48:50,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:48:50,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:48:50,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:48:50,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:48:50,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:48:50" (1/1) ... [2023-08-30 14:48:50,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:48:50,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:48:50,254 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 14:48:50,260 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 14:48:50,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:48:50,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:48:50,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:48:50,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:48:50,279 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 14:48:50,279 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 14:48:50,279 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 14:48:50,279 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 14:48:50,279 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 14:48:50,280 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 14:48:50,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:48:50,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 14:48:50,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:48:50,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:48:50,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:48:50,281 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 14:48:50,438 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:48:50,439 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:48:50,828 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:48:50,841 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:48:50,841 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 14:48:50,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:48:50 BoogieIcfgContainer [2023-08-30 14:48:50,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:48:50,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:48:50,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:48:50,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:48:50,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:48:49" (1/3) ... [2023-08-30 14:48:50,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c125702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:48:50, skipping insertion in model container [2023-08-30 14:48:50,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:48:50" (2/3) ... [2023-08-30 14:48:50,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c125702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:48:50, skipping insertion in model container [2023-08-30 14:48:50,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:48:50" (3/3) ... [2023-08-30 14:48:50,849 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2023-08-30 14:48:50,853 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:48:50,859 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:48:50,859 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-08-30 14:48:50,860 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:48:50,989 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:48:51,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 418 places, 440 transitions, 904 flow [2023-08-30 14:48:51,178 INFO L130 PetriNetUnfolder]: 32/437 cut-off events. [2023-08-30 14:48:51,178 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 14:48:51,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 437 events. 32/437 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1255 event pairs, 0 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 324. Up to 2 conditions per place. [2023-08-30 14:48:51,187 INFO L82 GeneralOperation]: Start removeDead. Operand has 418 places, 440 transitions, 904 flow [2023-08-30 14:48:51,194 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 398 places, 419 transitions, 853 flow [2023-08-30 14:48:51,196 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:48:51,208 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 398 places, 419 transitions, 853 flow [2023-08-30 14:48:51,210 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 398 places, 419 transitions, 853 flow [2023-08-30 14:48:51,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 398 places, 419 transitions, 853 flow [2023-08-30 14:48:51,265 INFO L130 PetriNetUnfolder]: 31/419 cut-off events. [2023-08-30 14:48:51,265 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 14:48:51,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 419 events. 31/419 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1256 event pairs, 0 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 324. Up to 2 conditions per place. [2023-08-30 14:48:51,282 INFO L119 LiptonReduction]: Number of co-enabled transitions 53934 [2023-08-30 14:49:07,537 INFO L134 LiptonReduction]: Checked pairs total: 50359 [2023-08-30 14:49:07,537 INFO L136 LiptonReduction]: Total number of compositions: 535 [2023-08-30 14:49:07,552 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:49:07,557 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;@1d741814, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:49:07,557 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2023-08-30 14:49:07,559 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 14:49:07,559 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:49:07,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:49:07,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:49:07,561 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:49:07,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:49:07,565 INFO L85 PathProgramCache]: Analyzing trace with hash 58799, now seen corresponding path program 1 times [2023-08-30 14:49:07,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:49:07,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701559217] [2023-08-30 14:49:07,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:49:07,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:49:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:49:07,784 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 14:49:07,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:49:07,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701559217] [2023-08-30 14:49:07,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701559217] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:49:07,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:49:07,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:49:07,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130103599] [2023-08-30 14:49:07,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:49:07,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:49:07,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:49:07,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:49:07,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:49:07,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 411 out of 975 [2023-08-30 14:49:07,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 411.6666666666667) internal successors, (1235), 3 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:07,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:49:07,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 411 of 975 [2023-08-30 14:49:07,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:49:08,886 INFO L130 PetriNetUnfolder]: 6211/8841 cut-off events. [2023-08-30 14:49:08,886 INFO L131 PetriNetUnfolder]: For 444/444 co-relation queries the response was YES. [2023-08-30 14:49:08,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18123 conditions, 8841 events. 6211/8841 cut-off events. For 444/444 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 46399 event pairs, 5306 based on Foata normal form. 0/3413 useless extension candidates. Maximal degree in co-relation 8144. Up to 4423 conditions per place. [2023-08-30 14:49:08,922 INFO L137 encePairwiseOnDemand]: 962/975 looper letters, 73 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-08-30 14:49:08,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 75 transitions, 330 flow [2023-08-30 14:49:08,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:49:08,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:49:08,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1328 transitions. [2023-08-30 14:49:08,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.454017094017094 [2023-08-30 14:49:08,937 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1328 transitions. [2023-08-30 14:49:08,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1328 transitions. [2023-08-30 14:49:08,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:49:08,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1328 transitions. [2023-08-30 14:49:08,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 442.6666666666667) internal successors, (1328), 3 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:08,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:08,955 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:08,957 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 111 flow. Second operand 3 states and 1328 transitions. [2023-08-30 14:49:08,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 75 transitions, 330 flow [2023-08-30 14:49:08,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 75 transitions, 312 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 14:49:08,970 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 98 flow [2023-08-30 14:49:08,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-08-30 14:49:08,975 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2023-08-30 14:49:08,975 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 98 flow [2023-08-30 14:49:08,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 411.6666666666667) internal successors, (1235), 3 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:08,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:49:08,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:49:08,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:49:08,979 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:49:08,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:49:08,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1824464, now seen corresponding path program 1 times [2023-08-30 14:49:08,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:49:08,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568008527] [2023-08-30 14:49:08,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:49:08,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:49:09,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:49:09,119 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 14:49:09,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:49:09,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568008527] [2023-08-30 14:49:09,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568008527] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:49:09,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807587443] [2023-08-30 14:49:09,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:49:09,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:49:09,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:49:09,123 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 14:49:09,126 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 14:49:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:49:09,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:49:09,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:49:09,228 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 14:49:09,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:49:09,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807587443] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:49:09,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:49:09,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:49:09,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169937989] [2023-08-30 14:49:09,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:49:09,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:49:09,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:49:09,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:49:09,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:49:09,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 411 out of 975 [2023-08-30 14:49:09,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 411.75) internal successors, (1647), 4 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:09,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:49:09,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 411 of 975 [2023-08-30 14:49:09,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:49:10,200 INFO L130 PetriNetUnfolder]: 6211/8840 cut-off events. [2023-08-30 14:49:10,201 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 14:49:10,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17963 conditions, 8840 events. 6211/8840 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 46916 event pairs, 5306 based on Foata normal form. 0/3415 useless extension candidates. Maximal degree in co-relation 8979. Up to 4421 conditions per place. [2023-08-30 14:49:10,259 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 72 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-30 14:49:10,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 74 transitions, 318 flow [2023-08-30 14:49:10,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:49:10,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:49:10,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1719 transitions. [2023-08-30 14:49:10,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44076923076923075 [2023-08-30 14:49:10,263 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1719 transitions. [2023-08-30 14:49:10,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1719 transitions. [2023-08-30 14:49:10,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:49:10,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1719 transitions. [2023-08-30 14:49:10,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 429.75) internal successors, (1719), 4 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:10,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 975.0) internal successors, (4875), 5 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:10,272 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 975.0) internal successors, (4875), 5 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:10,272 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 98 flow. Second operand 4 states and 1719 transitions. [2023-08-30 14:49:10,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 74 transitions, 318 flow [2023-08-30 14:49:10,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 74 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:49:10,273 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 96 flow [2023-08-30 14:49:10,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-08-30 14:49:10,274 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2023-08-30 14:49:10,274 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 96 flow [2023-08-30 14:49:10,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 411.75) internal successors, (1647), 4 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:10,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:49:10,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:49:10,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 14:49:10,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:49:10,481 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:49:10,481 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:49:10,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1824466, now seen corresponding path program 1 times [2023-08-30 14:49:10,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:49:10,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785080247] [2023-08-30 14:49:10,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:49:10,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:49:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:49:10,535 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 14:49:10,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:49:10,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785080247] [2023-08-30 14:49:10,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785080247] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:49:10,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141514124] [2023-08-30 14:49:10,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:49:10,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:49:10,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:49:10,540 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 14:49:10,542 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 14:49:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:49:10,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:49:10,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:49:10,633 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 14:49:10,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:49:10,649 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 14:49:10,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141514124] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:49:10,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:49:10,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 14:49:10,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494895418] [2023-08-30 14:49:10,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:49:10,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:49:10,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:49:10,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:49:10,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:49:10,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 411 out of 975 [2023-08-30 14:49:10,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 96 flow. Second operand has 7 states, 7 states have (on average 412.14285714285717) internal successors, (2885), 7 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:10,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:49:10,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 411 of 975 [2023-08-30 14:49:10,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:49:12,886 INFO L130 PetriNetUnfolder]: 15526/22097 cut-off events. [2023-08-30 14:49:12,887 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2023-08-30 14:49:12,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44892 conditions, 22097 events. 15526/22097 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 1375. Compared 132129 event pairs, 13265 based on Foata normal form. 0/8536 useless extension candidates. Maximal degree in co-relation 35907. Up to 4422 conditions per place. [2023-08-30 14:49:13,034 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 177 selfloop transitions, 5 changer transitions 0/182 dead transitions. [2023-08-30 14:49:13,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 182 transitions, 776 flow [2023-08-30 14:49:13,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:49:13,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:49:13,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2651 transitions. [2023-08-30 14:49:13,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45316239316239315 [2023-08-30 14:49:13,039 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2651 transitions. [2023-08-30 14:49:13,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2651 transitions. [2023-08-30 14:49:13,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:49:13,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2651 transitions. [2023-08-30 14:49:13,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 441.8333333333333) internal successors, (2651), 6 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:13,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 975.0) internal successors, (6825), 7 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 14:49:13,053 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 975.0) internal successors, (6825), 7 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 14:49:13,053 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 96 flow. Second operand 6 states and 2651 transitions. [2023-08-30 14:49:13,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 182 transitions, 776 flow [2023-08-30 14:49:13,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 182 transitions, 773 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:49:13,057 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 129 flow [2023-08-30 14:49:13,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2023-08-30 14:49:13,059 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-08-30 14:49:13,059 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 129 flow [2023-08-30 14:49:13,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 412.14285714285717) internal successors, (2885), 7 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:13,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:49:13,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:49:13,070 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 14:49:13,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-30 14:49:13,271 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:49:13,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:49:13,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1751412444, now seen corresponding path program 1 times [2023-08-30 14:49:13,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:49:13,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488886077] [2023-08-30 14:49:13,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:49:13,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:49:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:49:13,333 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 14:49:13,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:49:13,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488886077] [2023-08-30 14:49:13,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488886077] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:49:13,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:49:13,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:49:13,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625976034] [2023-08-30 14:49:13,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:49:13,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:49:13,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:49:13,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:49:13,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:49:13,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-08-30 14:49:13,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 411.6666666666667) internal successors, (1235), 3 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:13,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:49:13,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-08-30 14:49:13,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:49:15,097 INFO L130 PetriNetUnfolder]: 12421/17679 cut-off events. [2023-08-30 14:49:15,098 INFO L131 PetriNetUnfolder]: For 193/193 co-relation queries the response was YES. [2023-08-30 14:49:15,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35933 conditions, 17679 events. 12421/17679 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 1216. Compared 103390 event pairs, 10612 based on Foata normal form. 1/6832 useless extension candidates. Maximal degree in co-relation 35917. Up to 17679 conditions per place. [2023-08-30 14:49:15,182 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 40 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-30 14:49:15,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 42 transitions, 213 flow [2023-08-30 14:49:15,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:49:15,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:49:15,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1270 transitions. [2023-08-30 14:49:15,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4341880341880342 [2023-08-30 14:49:15,185 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1270 transitions. [2023-08-30 14:49:15,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1270 transitions. [2023-08-30 14:49:15,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:49:15,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1270 transitions. [2023-08-30 14:49:15,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 423.3333333333333) internal successors, (1270), 3 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:15,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:15,192 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:15,192 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 129 flow. Second operand 3 states and 1270 transitions. [2023-08-30 14:49:15,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 42 transitions, 213 flow [2023-08-30 14:49:15,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 42 transitions, 203 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 14:49:15,195 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 127 flow [2023-08-30 14:49:15,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2023-08-30 14:49:15,196 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2023-08-30 14:49:15,196 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 127 flow [2023-08-30 14:49:15,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 411.6666666666667) internal successors, (1235), 3 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:15,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:49:15,197 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 14:49:15,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:49:15,197 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:49:15,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:49:15,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1480223121, now seen corresponding path program 2 times [2023-08-30 14:49:15,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:49:15,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932381600] [2023-08-30 14:49:15,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:49:15,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:49:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:49:15,327 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:49:15,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:49:15,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932381600] [2023-08-30 14:49:15,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932381600] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:49:15,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252286] [2023-08-30 14:49:15,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:49:15,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:49:15,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:49:15,329 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 14:49:15,333 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 14:49:15,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:49:15,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:49:15,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:49:15,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:49:15,420 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 14:49:15,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:49:15,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252286] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:49:15,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:49:15,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 14:49:15,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920371467] [2023-08-30 14:49:15,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:49:15,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:49:15,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:49:15,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:49:15,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:49:15,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-08-30 14:49:15,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 413.0) internal successors, (1239), 3 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:15,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:49:15,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-08-30 14:49:15,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:49:16,858 INFO L130 PetriNetUnfolder]: 12421/17678 cut-off events. [2023-08-30 14:49:16,858 INFO L131 PetriNetUnfolder]: For 196/196 co-relation queries the response was YES. [2023-08-30 14:49:16,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35931 conditions, 17678 events. 12421/17678 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 1228. Compared 103395 event pairs, 10612 based on Foata normal form. 1/6831 useless extension candidates. Maximal degree in co-relation 35912. Up to 17678 conditions per place. [2023-08-30 14:49:16,917 INFO L137 encePairwiseOnDemand]: 973/975 looper letters, 40 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-08-30 14:49:16,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 41 transitions, 199 flow [2023-08-30 14:49:16,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:49:16,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:49:16,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1274 transitions. [2023-08-30 14:49:16,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43555555555555553 [2023-08-30 14:49:16,920 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1274 transitions. [2023-08-30 14:49:16,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1274 transitions. [2023-08-30 14:49:16,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:49:16,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1274 transitions. [2023-08-30 14:49:16,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 424.6666666666667) internal successors, (1274), 3 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:16,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:16,926 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:16,926 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 127 flow. Second operand 3 states and 1274 transitions. [2023-08-30 14:49:16,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 41 transitions, 199 flow [2023-08-30 14:49:16,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 41 transitions, 185 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-30 14:49:16,927 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 105 flow [2023-08-30 14:49:16,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-08-30 14:49:16,928 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2023-08-30 14:49:16,928 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 105 flow [2023-08-30 14:49:16,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 413.0) internal successors, (1239), 3 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:16,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:49:16,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:49:16,933 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 14:49:17,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:49:17,135 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:49:17,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:49:17,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1482176863, now seen corresponding path program 1 times [2023-08-30 14:49:17,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:49:17,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33665558] [2023-08-30 14:49:17,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:49:17,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:49:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:49:17,185 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 14:49:17,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:49:17,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33665558] [2023-08-30 14:49:17,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33665558] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:49:17,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020308833] [2023-08-30 14:49:17,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:49:17,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:49:17,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:49:17,187 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 14:49:17,190 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 14:49:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:49:17,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:49:17,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:49:17,290 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 14:49:17,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:49:17,299 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 14:49:17,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020308833] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:49:17,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:49:17,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:49:17,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8418142] [2023-08-30 14:49:17,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:49:17,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:49:17,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:49:17,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:49:17,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:49:17,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 408 out of 975 [2023-08-30 14:49:17,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 105 flow. Second operand has 7 states, 7 states have (on average 409.7142857142857) internal successors, (2868), 7 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:17,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:49:17,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 408 of 975 [2023-08-30 14:49:17,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:49:18,226 INFO L130 PetriNetUnfolder]: 6211/8842 cut-off events. [2023-08-30 14:49:18,226 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 14:49:18,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17973 conditions, 8842 events. 6211/8842 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 47095 event pairs, 5306 based on Foata normal form. 2/3420 useless extension candidates. Maximal degree in co-relation 17964. Up to 8840 conditions per place. [2023-08-30 14:49:18,254 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 37 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2023-08-30 14:49:18,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 41 transitions, 187 flow [2023-08-30 14:49:18,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:49:18,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:49:18,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2082 transitions. [2023-08-30 14:49:18,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270769230769231 [2023-08-30 14:49:18,259 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2082 transitions. [2023-08-30 14:49:18,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2082 transitions. [2023-08-30 14:49:18,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:49:18,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2082 transitions. [2023-08-30 14:49:18,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 416.4) internal successors, (2082), 5 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:18,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 975.0) internal successors, (5850), 6 states have internal predecessors, (5850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:18,269 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 975.0) internal successors, (5850), 6 states have internal predecessors, (5850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:18,269 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 105 flow. Second operand 5 states and 2082 transitions. [2023-08-30 14:49:18,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 41 transitions, 187 flow [2023-08-30 14:49:18,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 41 transitions, 182 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 14:49:18,270 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 116 flow [2023-08-30 14:49:18,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2023-08-30 14:49:18,271 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2023-08-30 14:49:18,271 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 116 flow [2023-08-30 14:49:18,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 409.7142857142857) internal successors, (2868), 7 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:18,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:49:18,272 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2023-08-30 14:49:18,278 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 14:49:18,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:49:18,476 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:49:18,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:49:18,477 INFO L85 PathProgramCache]: Analyzing trace with hash -862143743, now seen corresponding path program 2 times [2023-08-30 14:49:18,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:49:18,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526180559] [2023-08-30 14:49:18,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:49:18,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:49:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:49:18,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:49:18,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:49:18,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526180559] [2023-08-30 14:49:18,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526180559] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:49:18,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:49:18,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:49:18,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612044134] [2023-08-30 14:49:18,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:49:18,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:49:18,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:49:18,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:49:18,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:49:18,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-08-30 14:49:18,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:18,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:49:18,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-08-30 14:49:18,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:49:19,326 INFO L130 PetriNetUnfolder]: 4875/6954 cut-off events. [2023-08-30 14:49:19,326 INFO L131 PetriNetUnfolder]: For 86/86 co-relation queries the response was YES. [2023-08-30 14:49:19,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14173 conditions, 6954 events. 4875/6954 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 35604 event pairs, 4102 based on Foata normal form. 0/2842 useless extension candidates. Maximal degree in co-relation 14161. Up to 6954 conditions per place. [2023-08-30 14:49:19,350 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-08-30 14:49:19,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 39 transitions, 190 flow [2023-08-30 14:49:19,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:49:19,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:49:19,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1273 transitions. [2023-08-30 14:49:19,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4352136752136752 [2023-08-30 14:49:19,354 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1273 transitions. [2023-08-30 14:49:19,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1273 transitions. [2023-08-30 14:49:19,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:49:19,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1273 transitions. [2023-08-30 14:49:19,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 424.3333333333333) internal successors, (1273), 3 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:19,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:19,361 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:19,361 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 116 flow. Second operand 3 states and 1273 transitions. [2023-08-30 14:49:19,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 39 transitions, 190 flow [2023-08-30 14:49:19,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 39 transitions, 182 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 14:49:19,363 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 106 flow [2023-08-30 14:49:19,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2023-08-30 14:49:19,364 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2023-08-30 14:49:19,364 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 106 flow [2023-08-30 14:49:19,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:19,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:49:19,364 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2023-08-30 14:49:19,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:49:19,365 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:49:19,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:49:19,365 INFO L85 PathProgramCache]: Analyzing trace with hash -862143740, now seen corresponding path program 1 times [2023-08-30 14:49:19,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:49:19,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637798655] [2023-08-30 14:49:19,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:49:19,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:49:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:49:19,408 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:49:19,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:49:19,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637798655] [2023-08-30 14:49:19,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637798655] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:49:19,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:49:19,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:49:19,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515860447] [2023-08-30 14:49:19,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:49:19,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:49:19,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:49:19,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:49:19,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:49:19,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-08-30 14:49:19,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 412.0) internal successors, (1236), 3 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:19,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:49:19,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-08-30 14:49:19,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:49:20,405 INFO L130 PetriNetUnfolder]: 6607/9458 cut-off events. [2023-08-30 14:49:20,405 INFO L131 PetriNetUnfolder]: For 86/86 co-relation queries the response was YES. [2023-08-30 14:49:20,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19246 conditions, 9458 events. 6607/9458 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 51969 event pairs, 4102 based on Foata normal form. 0/4034 useless extension candidates. Maximal degree in co-relation 19234. Up to 6955 conditions per place. [2023-08-30 14:49:20,430 INFO L137 encePairwiseOnDemand]: 969/975 looper letters, 63 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-08-30 14:49:20,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 65 transitions, 293 flow [2023-08-30 14:49:20,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:49:20,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:49:20,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1295 transitions. [2023-08-30 14:49:20,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4427350427350427 [2023-08-30 14:49:20,433 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1295 transitions. [2023-08-30 14:49:20,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1295 transitions. [2023-08-30 14:49:20,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:49:20,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1295 transitions. [2023-08-30 14:49:20,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 431.6666666666667) internal successors, (1295), 3 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:20,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:20,438 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:20,439 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 106 flow. Second operand 3 states and 1295 transitions. [2023-08-30 14:49:20,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 65 transitions, 293 flow [2023-08-30 14:49:20,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 65 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:49:20,440 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 123 flow [2023-08-30 14:49:20,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-08-30 14:49:20,440 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-08-30 14:49:20,440 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 123 flow [2023-08-30 14:49:20,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 412.0) internal successors, (1236), 3 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:20,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:49:20,441 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-30 14:49:20,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:49:20,441 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:49:20,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:49:20,441 INFO L85 PathProgramCache]: Analyzing trace with hash -956650431, now seen corresponding path program 1 times [2023-08-30 14:49:20,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:49:20,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993906560] [2023-08-30 14:49:20,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:49:20,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:49:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:49:20,468 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:49:20,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:49:20,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993906560] [2023-08-30 14:49:20,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993906560] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:49:20,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:49:20,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:49:20,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630958622] [2023-08-30 14:49:20,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:49:20,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:49:20,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:49:20,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:49:20,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:49:20,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-08-30 14:49:20,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 412.3333333333333) internal successors, (1237), 3 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:20,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:49:20,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-08-30 14:49:20,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:49:21,198 INFO L130 PetriNetUnfolder]: 5979/8570 cut-off events. [2023-08-30 14:49:21,198 INFO L131 PetriNetUnfolder]: For 1456/1456 co-relation queries the response was YES. [2023-08-30 14:49:21,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19257 conditions, 8570 events. 5979/8570 cut-off events. For 1456/1456 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 45177 event pairs, 5078 based on Foata normal form. 0/4278 useless extension candidates. Maximal degree in co-relation 19244. Up to 8570 conditions per place. [2023-08-30 14:49:21,225 INFO L137 encePairwiseOnDemand]: 973/975 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-08-30 14:49:21,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 39 transitions, 197 flow [2023-08-30 14:49:21,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:49:21,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:49:21,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1265 transitions. [2023-08-30 14:49:21,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324786324786325 [2023-08-30 14:49:21,228 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1265 transitions. [2023-08-30 14:49:21,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1265 transitions. [2023-08-30 14:49:21,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:49:21,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1265 transitions. [2023-08-30 14:49:21,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 421.6666666666667) internal successors, (1265), 3 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:21,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:21,233 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:21,233 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 123 flow. Second operand 3 states and 1265 transitions. [2023-08-30 14:49:21,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 39 transitions, 197 flow [2023-08-30 14:49:21,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 39 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:49:21,235 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 119 flow [2023-08-30 14:49:21,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2023-08-30 14:49:21,236 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-08-30 14:49:21,236 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 119 flow [2023-08-30 14:49:21,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 412.3333333333333) internal successors, (1237), 3 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:21,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:49:21,237 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-30 14:49:21,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 14:49:21,237 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:49:21,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:49:21,237 INFO L85 PathProgramCache]: Analyzing trace with hash -956650378, now seen corresponding path program 1 times [2023-08-30 14:49:21,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:49:21,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283640789] [2023-08-30 14:49:21,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:49:21,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:49:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:49:21,293 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:49:21,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:49:21,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283640789] [2023-08-30 14:49:21,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283640789] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:49:21,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24705207] [2023-08-30 14:49:21,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:49:21,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:49:21,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:49:21,297 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 14:49:21,299 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 14:49:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:49:21,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:49:21,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:49:21,401 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 14:49:21,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:49:21,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24705207] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:49:21,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:49:21,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 14:49:21,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765918792] [2023-08-30 14:49:21,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:49:21,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:49:21,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:49:21,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:49:21,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:49:21,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-08-30 14:49:21,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 414.3333333333333) internal successors, (1243), 3 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:21,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:49:21,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-08-30 14:49:21,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:49:22,092 INFO L130 PetriNetUnfolder]: 4693/6744 cut-off events. [2023-08-30 14:49:22,092 INFO L131 PetriNetUnfolder]: For 822/822 co-relation queries the response was YES. [2023-08-30 14:49:22,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14864 conditions, 6744 events. 4693/6744 cut-off events. For 822/822 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 34195 event pairs, 3924 based on Foata normal form. 0/3588 useless extension candidates. Maximal degree in co-relation 14850. Up to 6744 conditions per place. [2023-08-30 14:49:22,113 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 36 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-08-30 14:49:22,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 37 transitions, 187 flow [2023-08-30 14:49:22,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:49:22,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:49:22,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1270 transitions. [2023-08-30 14:49:22,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4341880341880342 [2023-08-30 14:49:22,115 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1270 transitions. [2023-08-30 14:49:22,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1270 transitions. [2023-08-30 14:49:22,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:49:22,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1270 transitions. [2023-08-30 14:49:22,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 423.3333333333333) internal successors, (1270), 3 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:22,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:22,121 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:22,121 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 119 flow. Second operand 3 states and 1270 transitions. [2023-08-30 14:49:22,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 37 transitions, 187 flow [2023-08-30 14:49:22,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 37 transitions, 186 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:49:22,122 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 114 flow [2023-08-30 14:49:22,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-08-30 14:49:22,123 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-08-30 14:49:22,123 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 114 flow [2023-08-30 14:49:22,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 414.3333333333333) internal successors, (1243), 3 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:22,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:49:22,123 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-30 14:49:22,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 14:49:22,331 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,SelfDestructingSolverStorable9 [2023-08-30 14:49:22,332 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:49:22,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:49:22,332 INFO L85 PathProgramCache]: Analyzing trace with hash -956650376, now seen corresponding path program 1 times [2023-08-30 14:49:22,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:49:22,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500795681] [2023-08-30 14:49:22,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:49:22,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:49:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:49:22,384 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 14:49:22,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:49:22,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500795681] [2023-08-30 14:49:22,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500795681] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:49:22,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:49:22,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:49:22,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409895639] [2023-08-30 14:49:22,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:49:22,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:49:22,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:49:22,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:49:22,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:49:22,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-08-30 14:49:22,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 414.3333333333333) internal successors, (1243), 3 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:22,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:49:22,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-08-30 14:49:22,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:49:22,913 INFO L130 PetriNetUnfolder]: 3603/5194 cut-off events. [2023-08-30 14:49:22,913 INFO L131 PetriNetUnfolder]: For 710/710 co-relation queries the response was YES. [2023-08-30 14:49:22,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11395 conditions, 5194 events. 3603/5194 cut-off events. For 710/710 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 25051 event pairs, 2954 based on Foata normal form. 0/2986 useless extension candidates. Maximal degree in co-relation 11380. Up to 5194 conditions per place. [2023-08-30 14:49:22,927 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 34 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-08-30 14:49:22,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 35 transitions, 178 flow [2023-08-30 14:49:22,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:49:22,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:49:22,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1268 transitions. [2023-08-30 14:49:22,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4335042735042735 [2023-08-30 14:49:22,929 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1268 transitions. [2023-08-30 14:49:22,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1268 transitions. [2023-08-30 14:49:22,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:49:22,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1268 transitions. [2023-08-30 14:49:22,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 422.6666666666667) internal successors, (1268), 3 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:22,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:22,934 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:22,934 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 114 flow. Second operand 3 states and 1268 transitions. [2023-08-30 14:49:22,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 35 transitions, 178 flow [2023-08-30 14:49:22,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 35 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:49:22,936 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 109 flow [2023-08-30 14:49:22,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2023-08-30 14:49:22,936 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2023-08-30 14:49:22,936 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 109 flow [2023-08-30 14:49:22,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 414.3333333333333) internal successors, (1243), 3 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:22,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:49:22,937 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-30 14:49:22,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 14:49:22,937 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:49:22,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:49:22,937 INFO L85 PathProgramCache]: Analyzing trace with hash -956650375, now seen corresponding path program 1 times [2023-08-30 14:49:22,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:49:22,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995319751] [2023-08-30 14:49:22,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:49:22,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:49:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:49:23,014 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 14:49:23,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:49:23,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995319751] [2023-08-30 14:49:23,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995319751] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:49:23,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:49:23,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:49:23,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948578122] [2023-08-30 14:49:23,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:49:23,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:49:23,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:49:23,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:49:23,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:49:23,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-08-30 14:49:23,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 414.3333333333333) internal successors, (1243), 3 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:23,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:49:23,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-08-30 14:49:23,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:49:23,372 INFO L130 PetriNetUnfolder]: 2687/3890 cut-off events. [2023-08-30 14:49:23,373 INFO L131 PetriNetUnfolder]: For 610/610 co-relation queries the response was YES. [2023-08-30 14:49:23,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8454 conditions, 3890 events. 2687/3890 cut-off events. For 610/610 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 17802 event pairs, 2150 based on Foata normal form. 0/2434 useless extension candidates. Maximal degree in co-relation 8438. Up to 3890 conditions per place. [2023-08-30 14:49:23,385 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 32 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-08-30 14:49:23,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 33 transitions, 169 flow [2023-08-30 14:49:23,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:49:23,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:49:23,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1266 transitions. [2023-08-30 14:49:23,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4328205128205128 [2023-08-30 14:49:23,388 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1266 transitions. [2023-08-30 14:49:23,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1266 transitions. [2023-08-30 14:49:23,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:49:23,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1266 transitions. [2023-08-30 14:49:23,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 422.0) internal successors, (1266), 3 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:23,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:23,393 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:23,393 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 109 flow. Second operand 3 states and 1266 transitions. [2023-08-30 14:49:23,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 33 transitions, 169 flow [2023-08-30 14:49:23,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 33 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:49:23,394 INFO L231 Difference]: Finished difference. Result has 47 places, 33 transitions, 104 flow [2023-08-30 14:49:23,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=47, PETRI_TRANSITIONS=33} [2023-08-30 14:49:23,395 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2023-08-30 14:49:23,395 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 33 transitions, 104 flow [2023-08-30 14:49:23,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 414.3333333333333) internal successors, (1243), 3 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:23,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:49:23,395 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:49:23,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:49:23,396 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:49:23,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:49:23,396 INFO L85 PathProgramCache]: Analyzing trace with hash 411238806, now seen corresponding path program 1 times [2023-08-30 14:49:23,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:49:23,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908328336] [2023-08-30 14:49:23,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:49:23,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:49:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:49:23,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:49:23,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:49:23,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908328336] [2023-08-30 14:49:23,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908328336] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:49:23,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:49:23,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:49:23,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857192505] [2023-08-30 14:49:23,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:49:23,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:49:23,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:49:23,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:49:23,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:49:23,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-08-30 14:49:23,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 33 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 414.6666666666667) internal successors, (1244), 3 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:23,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:49:23,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-08-30 14:49:23,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:49:23,699 INFO L130 PetriNetUnfolder]: 1913/2780 cut-off events. [2023-08-30 14:49:23,700 INFO L131 PetriNetUnfolder]: For 430/430 co-relation queries the response was YES. [2023-08-30 14:49:23,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6071 conditions, 2780 events. 1913/2780 cut-off events. For 430/430 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 11844 event pairs, 1480 based on Foata normal form. 0/1856 useless extension candidates. Maximal degree in co-relation 6054. Up to 2780 conditions per place. [2023-08-30 14:49:23,707 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 30 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2023-08-30 14:49:23,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 31 transitions, 162 flow [2023-08-30 14:49:23,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:49:23,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:49:23,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1264 transitions. [2023-08-30 14:49:23,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4321367521367521 [2023-08-30 14:49:23,710 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1264 transitions. [2023-08-30 14:49:23,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1264 transitions. [2023-08-30 14:49:23,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:49:23,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1264 transitions. [2023-08-30 14:49:23,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:23,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:23,715 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:23,715 INFO L175 Difference]: Start difference. First operand has 47 places, 33 transitions, 104 flow. Second operand 3 states and 1264 transitions. [2023-08-30 14:49:23,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 31 transitions, 162 flow [2023-08-30 14:49:23,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 31 transitions, 161 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:49:23,716 INFO L231 Difference]: Finished difference. Result has 46 places, 31 transitions, 101 flow [2023-08-30 14:49:23,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=46, PETRI_TRANSITIONS=31} [2023-08-30 14:49:23,716 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -8 predicate places. [2023-08-30 14:49:23,717 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 31 transitions, 101 flow [2023-08-30 14:49:23,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 414.6666666666667) internal successors, (1244), 3 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:23,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:49:23,717 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:49:23,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:49:23,717 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:49:23,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:49:23,718 INFO L85 PathProgramCache]: Analyzing trace with hash 411238849, now seen corresponding path program 1 times [2023-08-30 14:49:23,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:49:23,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575799498] [2023-08-30 14:49:23,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:49:23,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:49:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:49:23,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:49:23,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:49:23,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575799498] [2023-08-30 14:49:23,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575799498] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:49:23,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:49:23,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:49:23,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350941180] [2023-08-30 14:49:23,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:49:23,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:49:23,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:49:23,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:49:23,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:49:23,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-08-30 14:49:23,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 31 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 412.6666666666667) internal successors, (1238), 3 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:23,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:49:23,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-08-30 14:49:23,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:49:24,161 INFO L130 PetriNetUnfolder]: 2693/3920 cut-off events. [2023-08-30 14:49:24,161 INFO L131 PetriNetUnfolder]: For 614/614 co-relation queries the response was YES. [2023-08-30 14:49:24,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8536 conditions, 3920 events. 2693/3920 cut-off events. For 614/614 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 18523 event pairs, 1480 based on Foata normal form. 0/2644 useless extension candidates. Maximal degree in co-relation 8518. Up to 2781 conditions per place. [2023-08-30 14:49:24,173 INFO L137 encePairwiseOnDemand]: 971/975 looper letters, 47 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-08-30 14:49:24,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 49 transitions, 245 flow [2023-08-30 14:49:24,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:49:24,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:49:24,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1275 transitions. [2023-08-30 14:49:24,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2023-08-30 14:49:24,176 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1275 transitions. [2023-08-30 14:49:24,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1275 transitions. [2023-08-30 14:49:24,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:49:24,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1275 transitions. [2023-08-30 14:49:24,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 425.0) internal successors, (1275), 3 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:24,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:24,181 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:24,181 INFO L175 Difference]: Start difference. First operand has 46 places, 31 transitions, 101 flow. Second operand 3 states and 1275 transitions. [2023-08-30 14:49:24,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 49 transitions, 245 flow [2023-08-30 14:49:24,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:49:24,182 INFO L231 Difference]: Finished difference. Result has 48 places, 32 transitions, 114 flow [2023-08-30 14:49:24,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=48, PETRI_TRANSITIONS=32} [2023-08-30 14:49:24,183 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2023-08-30 14:49:24,183 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 32 transitions, 114 flow [2023-08-30 14:49:24,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 412.6666666666667) internal successors, (1238), 3 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:24,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:49:24,183 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:49:24,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 14:49:24,184 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:49:24,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:49:24,184 INFO L85 PathProgramCache]: Analyzing trace with hash -136496192, now seen corresponding path program 1 times [2023-08-30 14:49:24,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:49:24,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898355475] [2023-08-30 14:49:24,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:49:24,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:49:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:49:24,241 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:49:24,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:49:24,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898355475] [2023-08-30 14:49:24,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898355475] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:49:24,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592028569] [2023-08-30 14:49:24,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:49:24,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:49:24,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:49:24,243 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 14:49:24,245 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 14:49:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:49:24,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:49:24,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:49:24,363 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 14:49:24,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:49:24,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592028569] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:49:24,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:49:24,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 14:49:24,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611004124] [2023-08-30 14:49:24,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:49:24,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:49:24,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:49:24,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:49:24,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:49:24,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-08-30 14:49:24,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 32 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 415.0) internal successors, (1245), 3 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:24,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:49:24,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-08-30 14:49:24,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:49:24,671 INFO L130 PetriNetUnfolder]: 1911/2794 cut-off events. [2023-08-30 14:49:24,671 INFO L131 PetriNetUnfolder]: For 1016/1016 co-relation queries the response was YES. [2023-08-30 14:49:24,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6781 conditions, 2794 events. 1911/2794 cut-off events. For 1016/1016 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11892 event pairs, 1470 based on Foata normal form. 0/2294 useless extension candidates. Maximal degree in co-relation 6762. Up to 2794 conditions per place. [2023-08-30 14:49:24,679 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 29 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-08-30 14:49:24,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 30 transitions, 168 flow [2023-08-30 14:49:24,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:49:24,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:49:24,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1262 transitions. [2023-08-30 14:49:24,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43145299145299143 [2023-08-30 14:49:24,681 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1262 transitions. [2023-08-30 14:49:24,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1262 transitions. [2023-08-30 14:49:24,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:49:24,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1262 transitions. [2023-08-30 14:49:24,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 420.6666666666667) internal successors, (1262), 3 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:24,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:24,685 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:24,685 INFO L175 Difference]: Start difference. First operand has 48 places, 32 transitions, 114 flow. Second operand 3 states and 1262 transitions. [2023-08-30 14:49:24,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 30 transitions, 168 flow [2023-08-30 14:49:24,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 30 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:49:24,687 INFO L231 Difference]: Finished difference. Result has 47 places, 30 transitions, 108 flow [2023-08-30 14:49:24,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=47, PETRI_TRANSITIONS=30} [2023-08-30 14:49:24,687 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2023-08-30 14:49:24,687 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 30 transitions, 108 flow [2023-08-30 14:49:24,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 415.0) internal successors, (1245), 3 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:24,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:49:24,688 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:49:24,695 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 14:49:24,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 14:49:24,895 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:49:24,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:49:24,896 INFO L85 PathProgramCache]: Analyzing trace with hash -136496207, now seen corresponding path program 1 times [2023-08-30 14:49:24,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:49:24,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047971954] [2023-08-30 14:49:24,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:49:24,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:49:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:49:24,943 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:49:24,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:49:24,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047971954] [2023-08-30 14:49:24,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047971954] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:49:24,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918460309] [2023-08-30 14:49:24,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:49:24,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:49:24,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:49:24,945 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:49:24,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 14:49:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:49:25,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:49:25,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:49:25,059 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:49:25,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:49:25,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918460309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:49:25,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:49:25,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 14:49:25,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37920867] [2023-08-30 14:49:25,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:49:25,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:49:25,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:49:25,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:49:25,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:49:25,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-08-30 14:49:25,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 30 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 412.25) internal successors, (1649), 4 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:25,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:49:25,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-08-30 14:49:25,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:49:25,359 INFO L130 PetriNetUnfolder]: 1607/2358 cut-off events. [2023-08-30 14:49:25,359 INFO L131 PetriNetUnfolder]: For 504/504 co-relation queries the response was YES. [2023-08-30 14:49:25,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5566 conditions, 2358 events. 1607/2358 cut-off events. For 504/504 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10589 event pairs, 142 based on Foata normal form. 0/2046 useless extension candidates. Maximal degree in co-relation 5546. Up to 1068 conditions per place. [2023-08-30 14:49:25,365 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 53 selfloop transitions, 2 changer transitions 3/58 dead transitions. [2023-08-30 14:49:25,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 58 transitions, 297 flow [2023-08-30 14:49:25,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:49:25,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:49:25,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1692 transitions. [2023-08-30 14:49:25,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4338461538461538 [2023-08-30 14:49:25,368 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1692 transitions. [2023-08-30 14:49:25,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1692 transitions. [2023-08-30 14:49:25,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:49:25,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1692 transitions. [2023-08-30 14:49:25,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:25,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 975.0) internal successors, (4875), 5 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:25,373 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 975.0) internal successors, (4875), 5 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:25,373 INFO L175 Difference]: Start difference. First operand has 47 places, 30 transitions, 108 flow. Second operand 4 states and 1692 transitions. [2023-08-30 14:49:25,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 58 transitions, 297 flow [2023-08-30 14:49:25,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 58 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:49:25,374 INFO L231 Difference]: Finished difference. Result has 48 places, 28 transitions, 105 flow [2023-08-30 14:49:25,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=48, PETRI_TRANSITIONS=28} [2023-08-30 14:49:25,375 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2023-08-30 14:49:25,375 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 28 transitions, 105 flow [2023-08-30 14:49:25,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 412.25) internal successors, (1649), 4 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:25,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:49:25,375 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:49:25,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 14:49:25,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:49:25,580 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:49:25,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:49:25,580 INFO L85 PathProgramCache]: Analyzing trace with hash 65202430, now seen corresponding path program 1 times [2023-08-30 14:49:25,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:49:25,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120246794] [2023-08-30 14:49:25,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:49:25,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:49:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:49:25,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:49:25,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:49:25,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120246794] [2023-08-30 14:49:25,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120246794] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:49:25,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:49:25,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:49:25,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000015045] [2023-08-30 14:49:25,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:49:25,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:49:25,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:49:25,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:49:25,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:49:25,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-08-30 14:49:25,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 28 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 413.3333333333333) internal successors, (1240), 3 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:25,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:49:25,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-08-30 14:49:25,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:49:25,890 INFO L130 PetriNetUnfolder]: 1607/2358 cut-off events. [2023-08-30 14:49:25,890 INFO L131 PetriNetUnfolder]: For 1212/1212 co-relation queries the response was YES. [2023-08-30 14:49:25,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5830 conditions, 2358 events. 1607/2358 cut-off events. For 1212/1212 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9924 event pairs, 916 based on Foata normal form. 0/2202 useless extension candidates. Maximal degree in co-relation 5810. Up to 1857 conditions per place. [2023-08-30 14:49:25,896 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 40 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-30 14:49:25,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 42 transitions, 235 flow [2023-08-30 14:49:25,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:49:25,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:49:25,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1265 transitions. [2023-08-30 14:49:25,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324786324786325 [2023-08-30 14:49:25,899 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1265 transitions. [2023-08-30 14:49:25,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1265 transitions. [2023-08-30 14:49:25,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:49:25,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1265 transitions. [2023-08-30 14:49:25,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 421.6666666666667) internal successors, (1265), 3 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:25,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:25,902 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:25,902 INFO L175 Difference]: Start difference. First operand has 48 places, 28 transitions, 105 flow. Second operand 3 states and 1265 transitions. [2023-08-30 14:49:25,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 42 transitions, 235 flow [2023-08-30 14:49:25,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 229 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:49:25,905 INFO L231 Difference]: Finished difference. Result has 48 places, 29 transitions, 114 flow [2023-08-30 14:49:25,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=48, PETRI_TRANSITIONS=29} [2023-08-30 14:49:25,905 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2023-08-30 14:49:25,905 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 29 transitions, 114 flow [2023-08-30 14:49:25,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 413.3333333333333) internal successors, (1240), 3 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:25,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:49:25,905 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:49:25,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 14:49:25,906 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:49:25,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:49:25,906 INFO L85 PathProgramCache]: Analyzing trace with hash 2021277161, now seen corresponding path program 1 times [2023-08-30 14:49:25,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:49:25,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930760472] [2023-08-30 14:49:25,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:49:25,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:49:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:49:25,951 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:49:25,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:49:25,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930760472] [2023-08-30 14:49:25,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930760472] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:49:25,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761999883] [2023-08-30 14:49:25,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:49:25,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:49:25,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:49:25,953 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:49:25,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 14:49:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:49:26,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:49:26,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:49:26,067 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:49:26,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:49:26,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761999883] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:49:26,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:49:26,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 14:49:26,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090948834] [2023-08-30 14:49:26,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:49:26,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:49:26,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:49:26,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:49:26,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:49:26,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-08-30 14:49:26,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 29 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 412.75) internal successors, (1651), 4 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:26,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:49:26,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-08-30 14:49:26,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:49:26,303 INFO L130 PetriNetUnfolder]: 1261/1856 cut-off events. [2023-08-30 14:49:26,303 INFO L131 PetriNetUnfolder]: For 946/946 co-relation queries the response was YES. [2023-08-30 14:49:26,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5147 conditions, 1856 events. 1261/1856 cut-off events. For 946/946 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7450 event pairs, 320 based on Foata normal form. 0/1856 useless extension candidates. Maximal degree in co-relation 5126. Up to 697 conditions per place. [2023-08-30 14:49:26,307 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2023-08-30 14:49:26,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 54 transitions, 300 flow [2023-08-30 14:49:26,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:49:26,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:49:26,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1685 transitions. [2023-08-30 14:49:26,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43205128205128207 [2023-08-30 14:49:26,310 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1685 transitions. [2023-08-30 14:49:26,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1685 transitions. [2023-08-30 14:49:26,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:49:26,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1685 transitions. [2023-08-30 14:49:26,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:26,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 975.0) internal successors, (4875), 5 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:26,314 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 975.0) internal successors, (4875), 5 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:26,314 INFO L175 Difference]: Start difference. First operand has 48 places, 29 transitions, 114 flow. Second operand 4 states and 1685 transitions. [2023-08-30 14:49:26,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 54 transitions, 300 flow [2023-08-30 14:49:26,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 54 transitions, 296 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:49:26,318 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2023-08-30 14:49:26,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2023-08-30 14:49:26,319 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-08-30 14:49:26,319 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2023-08-30 14:49:26,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 412.75) internal successors, (1651), 4 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:49:26,320 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 53 remaining) [2023-08-30 14:49:26,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 53 remaining) [2023-08-30 14:49:26,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 53 remaining) [2023-08-30 14:49:26,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 53 remaining) [2023-08-30 14:49:26,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 53 remaining) [2023-08-30 14:49:26,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 53 remaining) [2023-08-30 14:49:26,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 53 remaining) [2023-08-30 14:49:26,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 53 remaining) [2023-08-30 14:49:26,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 53 remaining) [2023-08-30 14:49:26,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 53 remaining) [2023-08-30 14:49:26,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 53 remaining) [2023-08-30 14:49:26,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 53 remaining) [2023-08-30 14:49:26,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 53 remaining) [2023-08-30 14:49:26,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 53 remaining) [2023-08-30 14:49:26,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 53 remaining) [2023-08-30 14:49:26,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 53 remaining) [2023-08-30 14:49:26,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 53 remaining) [2023-08-30 14:49:26,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 53 remaining) [2023-08-30 14:49:26,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 53 remaining) [2023-08-30 14:49:26,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 53 remaining) [2023-08-30 14:49:26,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 53 remaining) [2023-08-30 14:49:26,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 53 remaining) [2023-08-30 14:49:26,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 53 remaining) [2023-08-30 14:49:26,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 53 remaining) [2023-08-30 14:49:26,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 53 remaining) [2023-08-30 14:49:26,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 53 remaining) [2023-08-30 14:49:26,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 53 remaining) [2023-08-30 14:49:26,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 53 remaining) [2023-08-30 14:49:26,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 53 remaining) [2023-08-30 14:49:26,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 53 remaining) [2023-08-30 14:49:26,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 53 remaining) [2023-08-30 14:49:26,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 53 remaining) [2023-08-30 14:49:26,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 53 remaining) [2023-08-30 14:49:26,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 53 remaining) [2023-08-30 14:49:26,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 53 remaining) [2023-08-30 14:49:26,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 53 remaining) [2023-08-30 14:49:26,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 53 remaining) [2023-08-30 14:49:26,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 53 remaining) [2023-08-30 14:49:26,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 53 remaining) [2023-08-30 14:49:26,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 53 remaining) [2023-08-30 14:49:26,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 53 remaining) [2023-08-30 14:49:26,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 53 remaining) [2023-08-30 14:49:26,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 53 remaining) [2023-08-30 14:49:26,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 53 remaining) [2023-08-30 14:49:26,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 53 remaining) [2023-08-30 14:49:26,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 53 remaining) [2023-08-30 14:49:26,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 53 remaining) [2023-08-30 14:49:26,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 53 remaining) [2023-08-30 14:49:26,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 53 remaining) [2023-08-30 14:49:26,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 53 remaining) [2023-08-30 14:49:26,325 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 53 remaining) [2023-08-30 14:49:26,325 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 53 remaining) [2023-08-30 14:49:26,325 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 53 remaining) [2023-08-30 14:49:26,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 14:49:26,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 14:49:26,531 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:49:26,534 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 14:49:26,534 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 14:49:26,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 02:49:26 BasicIcfg [2023-08-30 14:49:26,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 14:49:26,537 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 14:49:26,537 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 14:49:26,537 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 14:49:26,537 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:48:50" (3/4) ... [2023-08-30 14:49:26,539 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 14:49:26,542 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 14:49:26,542 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 14:49:26,542 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 14:49:26,545 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2023-08-30 14:49:26,545 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 14:49:26,545 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 14:49:26,545 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 14:49:26,575 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 14:49:26,575 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 14:49:26,575 INFO L158 Benchmark]: Toolchain (without parser) took 36667.58ms. Allocated memory was 73.4MB in the beginning and 4.9GB in the end (delta: 4.8GB). Free memory was 43.6MB in the beginning and 4.1GB in the end (delta: -4.0GB). Peak memory consumption was 775.7MB. Max. memory is 16.1GB. [2023-08-30 14:49:26,576 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 73.4MB. Free memory is still 50.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 14:49:26,576 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.35ms. Allocated memory is still 73.4MB. Free memory was 43.4MB in the beginning and 30.5MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 14:49:26,576 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.56ms. Allocated memory is still 73.4MB. Free memory was 30.5MB in the beginning and 51.2MB in the end (delta: -20.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 14:49:26,576 INFO L158 Benchmark]: Boogie Preprocessor took 45.73ms. Allocated memory is still 73.4MB. Free memory was 51.2MB in the beginning and 49.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 14:49:26,577 INFO L158 Benchmark]: RCFGBuilder took 631.66ms. Allocated memory was 73.4MB in the beginning and 96.5MB in the end (delta: 23.1MB). Free memory was 49.1MB in the beginning and 62.3MB in the end (delta: -13.2MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2023-08-30 14:49:26,577 INFO L158 Benchmark]: TraceAbstraction took 35691.72ms. Allocated memory was 96.5MB in the beginning and 4.9GB in the end (delta: 4.8GB). Free memory was 61.7MB in the beginning and 4.1GB in the end (delta: -4.0GB). Peak memory consumption was 767.8MB. Max. memory is 16.1GB. [2023-08-30 14:49:26,577 INFO L158 Benchmark]: Witness Printer took 38.38ms. Allocated memory is still 4.9GB. Free memory was 4.1GB in the beginning and 4.1GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 14:49:26,578 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 73.4MB. Free memory is still 50.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 206.35ms. Allocated memory is still 73.4MB. Free memory was 43.4MB in the beginning and 30.5MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.56ms. Allocated memory is still 73.4MB. Free memory was 30.5MB in the beginning and 51.2MB in the end (delta: -20.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.73ms. Allocated memory is still 73.4MB. Free memory was 51.2MB in the beginning and 49.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 631.66ms. Allocated memory was 73.4MB in the beginning and 96.5MB in the end (delta: 23.1MB). Free memory was 49.1MB in the beginning and 62.3MB in the end (delta: -13.2MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. * TraceAbstraction took 35691.72ms. Allocated memory was 96.5MB in the beginning and 4.9GB in the end (delta: 4.8GB). Free memory was 61.7MB in the beginning and 4.1GB in the end (delta: -4.0GB). Peak memory consumption was 767.8MB. Max. memory is 16.1GB. * Witness Printer took 38.38ms. Allocated memory is still 4.9GB. Free memory was 4.1GB in the beginning and 4.1GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.3s, 398 PlacesBefore, 54 PlacesAfterwards, 419 TransitionsBefore, 48 TransitionsAfterwards, 53934 CoEnabledTransitionPairs, 8 FixpointIterations, 125 TrivialSequentialCompositions, 289 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 86 ConcurrentYvCompositions, 27 ChoiceCompositions, 535 TotalNumberOfCompositions, 50359 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 49677, independent: 49652, independent conditional: 0, independent unconditional: 49652, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 31740, independent: 31726, independent conditional: 0, independent unconditional: 31726, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 49677, independent: 17926, independent conditional: 0, independent unconditional: 17926, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 31740, unknown conditional: 0, unknown unconditional: 31740] , Statistics on independence cache: Total cache size (in pairs): 150, Positive cache size: 147, Positive conditional cache size: 0, Positive unconditional cache size: 147, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 152]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 152]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 655 locations, 53 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 35.5s, OverallIterations: 18, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 15.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 16.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1117 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 821 mSDsluCounter, 88 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1648 IncrementalHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 88 mSDtfsCounter, 1648 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=3, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 206 NumberOfCodeBlocks, 202 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 187 ConstructedInterpolants, 0 QuantifiedInterpolants, 463 SizeOfPredicates, 4 NumberOfNonLiveVariables, 1462 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 28 InterpolantComputations, 16 PerfectInterpolantSequences, 121/135 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 26 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 14:49:26,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE