./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-nzb-file-symm.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 b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:03:35,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:03:35,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:03:35,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:03:35,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:03:35,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:03:35,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:03:35,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:03:35,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:03:35,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:03:35,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:03:35,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:03:35,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:03:35,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:03:35,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:03:35,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:03:35,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:03:35,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:03:35,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:03:35,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:03:35,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:03:35,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:03:35,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:03:35,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:03:35,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:03:35,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:03:35,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:03:35,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:03:35,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:03:35,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:03:35,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:03:35,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:03:35,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:03:35,656 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:03:35,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:03:35,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:03:35,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:03:35,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:03:35,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:03:35,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:03:35,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:03:35,661 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:03:35,695 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:03:35,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:03:35,696 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:03:35,696 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:03:35,697 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:03:35,698 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:03:35,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:03:35,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:03:35,698 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:03:35,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:03:35,699 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:03:35,700 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:03:35,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:03:35,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:03:35,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:03:35,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:03:35,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:03:35,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:03:35,701 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:03:35,701 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:03:35,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:03:35,701 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:03:35,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:03:35,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:03:35,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:03:35,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:03:35,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:03:35,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:03:35,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:03:35,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:03:35,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:03:35,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:03:35,704 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:03:35,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:03:35,704 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:03:35,704 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:03:35,705 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:03:35,705 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:03:36,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:03:36,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:03:36,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:03:36,043 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:03:36,043 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:03:36,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c [2023-08-30 11:03:37,302 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:03:37,557 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:03:37,559 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c [2023-08-30 11:03:37,571 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/780be0abf/4a7b9a90ecd44717929288f58f2205bf/FLAGf6778eed3 [2023-08-30 11:03:37,591 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/780be0abf/4a7b9a90ecd44717929288f58f2205bf [2023-08-30 11:03:37,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:03:37,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:03:37,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:03:37,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:03:37,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:03:37,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:03:37" (1/1) ... [2023-08-30 11:03:37,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e5202fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:03:37, skipping insertion in model container [2023-08-30 11:03:37,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:03:37" (1/1) ... [2023-08-30 11:03:37,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:03:37,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:03:37,838 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-nzb-file-symm.wvr.c[4929,4942] [2023-08-30 11:03:37,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:03:37,866 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:03:37,914 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-nzb-file-symm.wvr.c[4929,4942] [2023-08-30 11:03:37,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:03:37,942 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:03:37,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:03:37 WrapperNode [2023-08-30 11:03:37,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:03:37,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:03:37,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:03:37,945 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:03:37,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:03:37" (1/1) ... [2023-08-30 11:03:37,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:03:37" (1/1) ... [2023-08-30 11:03:38,019 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 21, calls inlined = 29, statements flattened = 496 [2023-08-30 11:03:38,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:03:38,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:03:38,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:03:38,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:03:38,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:03:37" (1/1) ... [2023-08-30 11:03:38,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:03:37" (1/1) ... [2023-08-30 11:03:38,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:03:37" (1/1) ... [2023-08-30 11:03:38,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:03:37" (1/1) ... [2023-08-30 11:03:38,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:03:37" (1/1) ... [2023-08-30 11:03:38,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:03:37" (1/1) ... [2023-08-30 11:03:38,099 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:03:37" (1/1) ... [2023-08-30 11:03:38,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:03:37" (1/1) ... [2023-08-30 11:03:38,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:03:38,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:03:38,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:03:38,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:03:38,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:03:37" (1/1) ... [2023-08-30 11:03:38,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:03:38,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:03:38,154 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 11:03:38,178 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 11:03:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:03:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:03:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:03:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:03:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:03:38,196 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:03:38,196 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:03:38,196 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:03:38,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:03:38,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:03:38,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:03:38,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:03:38,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:03:38,198 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 11:03:38,323 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:03:38,325 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:03:39,038 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:03:39,062 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:03:39,062 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 11:03:39,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:03:39 BoogieIcfgContainer [2023-08-30 11:03:39,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:03:39,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:03:39,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:03:39,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:03:39,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:03:37" (1/3) ... [2023-08-30 11:03:39,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7842d694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:03:39, skipping insertion in model container [2023-08-30 11:03:39,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:03:37" (2/3) ... [2023-08-30 11:03:39,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7842d694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:03:39, skipping insertion in model container [2023-08-30 11:03:39,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:03:39" (3/3) ... [2023-08-30 11:03:39,074 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2023-08-30 11:03:39,081 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:03:39,090 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:03:39,090 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-08-30 11:03:39,090 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:03:39,213 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 11:03:39,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 573 places, 627 transitions, 1270 flow [2023-08-30 11:03:39,496 INFO L130 PetriNetUnfolder]: 61/625 cut-off events. [2023-08-30 11:03:39,496 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:03:39,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634 conditions, 625 events. 61/625 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2180 event pairs, 0 based on Foata normal form. 0/522 useless extension candidates. Maximal degree in co-relation 455. Up to 2 conditions per place. [2023-08-30 11:03:39,513 INFO L82 GeneralOperation]: Start removeDead. Operand has 573 places, 627 transitions, 1270 flow [2023-08-30 11:03:39,529 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 557 places, 610 transitions, 1232 flow [2023-08-30 11:03:39,533 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:03:39,543 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 557 places, 610 transitions, 1232 flow [2023-08-30 11:03:39,545 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 557 places, 610 transitions, 1232 flow [2023-08-30 11:03:39,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 557 places, 610 transitions, 1232 flow [2023-08-30 11:03:39,690 INFO L130 PetriNetUnfolder]: 60/610 cut-off events. [2023-08-30 11:03:39,690 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:03:39,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 619 conditions, 610 events. 60/610 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2125 event pairs, 0 based on Foata normal form. 0/509 useless extension candidates. Maximal degree in co-relation 455. Up to 2 conditions per place. [2023-08-30 11:03:39,732 INFO L119 LiptonReduction]: Number of co-enabled transitions 105228 [2023-08-30 11:04:21,833 INFO L134 LiptonReduction]: Checked pairs total: 103824 [2023-08-30 11:04:21,833 INFO L136 LiptonReduction]: Total number of compositions: 837 [2023-08-30 11:04:21,846 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:04:21,851 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;@3763bb07, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:04:21,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2023-08-30 11:04:21,854 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:04:21,854 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:04:21,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:04:21,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:04:21,855 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 11:04:21,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:04:21,860 INFO L85 PathProgramCache]: Analyzing trace with hash 89996, now seen corresponding path program 1 times [2023-08-30 11:04:21,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:04:21,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921132608] [2023-08-30 11:04:21,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:21,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:04:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:22,106 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 11:04:22,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:04:22,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921132608] [2023-08-30 11:04:22,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921132608] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:04:22,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:04:22,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:04:22,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707841330] [2023-08-30 11:04:22,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:04:22,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:04:22,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:04:22,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:04:22,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:04:22,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 589 out of 1464 [2023-08-30 11:04:22,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 589.6666666666666) internal successors, (1769), 3 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:22,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:04:22,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 589 of 1464 [2023-08-30 11:04:22,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:04:23,046 INFO L130 PetriNetUnfolder]: 2393/3901 cut-off events. [2023-08-30 11:04:23,047 INFO L131 PetriNetUnfolder]: For 104/104 co-relation queries the response was YES. [2023-08-30 11:04:23,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7936 conditions, 3901 events. 2393/3901 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 22360 event pairs, 2010 based on Foata normal form. 2/1575 useless extension candidates. Maximal degree in co-relation 3816. Up to 1954 conditions per place. [2023-08-30 11:04:23,070 INFO L137 encePairwiseOnDemand]: 1443/1464 looper letters, 103 selfloop transitions, 4 changer transitions 2/109 dead transitions. [2023-08-30 11:04:23,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 109 transitions, 460 flow [2023-08-30 11:04:23,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:04:23,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:04:23,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1906 transitions. [2023-08-30 11:04:23,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43397085610200364 [2023-08-30 11:04:23,094 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1906 transitions. [2023-08-30 11:04:23,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1906 transitions. [2023-08-30 11:04:23,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:04:23,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1906 transitions. [2023-08-30 11:04:23,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 635.3333333333334) internal successors, (1906), 3 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:23,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:23,125 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:23,127 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 152 flow. Second operand 3 states and 1906 transitions. [2023-08-30 11:04:23,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 109 transitions, 460 flow [2023-08-30 11:04:23,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 109 transitions, 444 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 11:04:23,140 INFO L231 Difference]: Finished difference. Result has 57 places, 59 transitions, 151 flow [2023-08-30 11:04:23,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=57, PETRI_TRANSITIONS=59} [2023-08-30 11:04:23,145 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -13 predicate places. [2023-08-30 11:04:23,146 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 59 transitions, 151 flow [2023-08-30 11:04:23,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 589.6666666666666) internal successors, (1769), 3 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:23,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:04:23,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:04:23,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:04:23,150 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 11:04:23,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:04:23,153 INFO L85 PathProgramCache]: Analyzing trace with hash 2799174, now seen corresponding path program 1 times [2023-08-30 11:04:23,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:04:23,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520229830] [2023-08-30 11:04:23,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:23,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:04:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:23,305 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 11:04:23,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:04:23,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520229830] [2023-08-30 11:04:23,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520229830] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:04:23,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088957634] [2023-08-30 11:04:23,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:23,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:04:23,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:04:23,313 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 11:04:23,353 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 11:04:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:23,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:04:23,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:04:23,548 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 11:04:23,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:04:23,562 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 11:04:23,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088957634] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:04:23,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:04:23,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:04:23,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582937115] [2023-08-30 11:04:23,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:04:23,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:04:23,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:04:23,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:04:23,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:04:23,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 589 out of 1464 [2023-08-30 11:04:23,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 59 transitions, 151 flow. Second operand has 7 states, 7 states have (on average 590.1428571428571) internal successors, (4131), 7 states have internal predecessors, (4131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:23,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:04:23,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 589 of 1464 [2023-08-30 11:04:23,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:04:25,699 INFO L130 PetriNetUnfolder]: 5987/9746 cut-off events. [2023-08-30 11:04:25,699 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-08-30 11:04:25,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19654 conditions, 9746 events. 5987/9746 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 63459 event pairs, 5025 based on Foata normal form. 0/3936 useless extension candidates. Maximal degree in co-relation 15679. Up to 1951 conditions per place. [2023-08-30 11:04:25,752 INFO L137 encePairwiseOnDemand]: 1456/1464 looper letters, 245 selfloop transitions, 21 changer transitions 0/266 dead transitions. [2023-08-30 11:04:25,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 266 transitions, 1145 flow [2023-08-30 11:04:25,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:04:25,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:04:25,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4395 transitions. [2023-08-30 11:04:25,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428864168618267 [2023-08-30 11:04:25,763 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4395 transitions. [2023-08-30 11:04:25,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4395 transitions. [2023-08-30 11:04:25,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:04:25,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4395 transitions. [2023-08-30 11:04:25,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 627.8571428571429) internal successors, (4395), 7 states have internal predecessors, (4395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:25,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1464.0) internal successors, (11712), 8 states have internal predecessors, (11712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:25,794 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1464.0) internal successors, (11712), 8 states have internal predecessors, (11712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:25,794 INFO L175 Difference]: Start difference. First operand has 57 places, 59 transitions, 151 flow. Second operand 7 states and 4395 transitions. [2023-08-30 11:04:25,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 266 transitions, 1145 flow [2023-08-30 11:04:25,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 266 transitions, 1131 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:04:25,799 INFO L231 Difference]: Finished difference. Result has 63 places, 74 transitions, 282 flow [2023-08-30 11:04:25,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=282, PETRI_PLACES=63, PETRI_TRANSITIONS=74} [2023-08-30 11:04:25,800 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2023-08-30 11:04:25,800 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 74 transitions, 282 flow [2023-08-30 11:04:25,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 590.1428571428571) internal successors, (4131), 7 states have internal predecessors, (4131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:25,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:04:25,803 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 11:04:25,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 11:04:26,008 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 11:04:26,009 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 11:04:26,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:04:26,009 INFO L85 PathProgramCache]: Analyzing trace with hash 86780876, now seen corresponding path program 1 times [2023-08-30 11:04:26,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:04:26,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912462837] [2023-08-30 11:04:26,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:26,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:04:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:26,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:04:26,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:04:26,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912462837] [2023-08-30 11:04:26,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912462837] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:04:26,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226638577] [2023-08-30 11:04:26,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:26,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:04:26,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:04:26,100 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 11:04:26,103 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 11:04:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:26,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:04:26,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:04:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:04:26,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:04:26,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226638577] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:04:26,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:04:26,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 11:04:26,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3220607] [2023-08-30 11:04:26,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:04:26,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:04:26,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:04:26,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:04:26,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:04:26,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 589 out of 1464 [2023-08-30 11:04:26,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 74 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 589.8) internal successors, (2949), 5 states have internal predecessors, (2949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:26,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:04:26,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 589 of 1464 [2023-08-30 11:04:26,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:04:28,133 INFO L130 PetriNetUnfolder]: 5981/9738 cut-off events. [2023-08-30 11:04:28,134 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2023-08-30 11:04:28,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19656 conditions, 9738 events. 5981/9738 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 64304 event pairs, 5025 based on Foata normal form. 2/3938 useless extension candidates. Maximal degree in co-relation 11774. Up to 5842 conditions per place. [2023-08-30 11:04:28,183 INFO L137 encePairwiseOnDemand]: 1458/1464 looper letters, 153 selfloop transitions, 9 changer transitions 0/162 dead transitions. [2023-08-30 11:04:28,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 162 transitions, 750 flow [2023-08-30 11:04:28,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:04:28,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:04:28,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3105 transitions. [2023-08-30 11:04:28,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42418032786885246 [2023-08-30 11:04:28,192 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3105 transitions. [2023-08-30 11:04:28,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3105 transitions. [2023-08-30 11:04:28,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:04:28,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3105 transitions. [2023-08-30 11:04:28,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 621.0) internal successors, (3105), 5 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:28,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1464.0) internal successors, (8784), 6 states have internal predecessors, (8784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:28,214 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1464.0) internal successors, (8784), 6 states have internal predecessors, (8784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:28,214 INFO L175 Difference]: Start difference. First operand has 63 places, 74 transitions, 282 flow. Second operand 5 states and 3105 transitions. [2023-08-30 11:04:28,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 162 transitions, 750 flow [2023-08-30 11:04:28,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 162 transitions, 731 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 11:04:28,218 INFO L231 Difference]: Finished difference. Result has 63 places, 66 transitions, 227 flow [2023-08-30 11:04:28,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=63, PETRI_TRANSITIONS=66} [2023-08-30 11:04:28,219 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2023-08-30 11:04:28,219 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 66 transitions, 227 flow [2023-08-30 11:04:28,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 589.8) internal successors, (2949), 5 states have internal predecessors, (2949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:28,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:04:28,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 11:04:28,227 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 11:04:28,426 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 11:04:28,427 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 11:04:28,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:04:28,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1603500468, now seen corresponding path program 1 times [2023-08-30 11:04:28,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:04:28,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309273653] [2023-08-30 11:04:28,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:28,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:04:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:28,478 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 11:04:28,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:04:28,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309273653] [2023-08-30 11:04:28,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309273653] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:04:28,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:04:28,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:04:28,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352768168] [2023-08-30 11:04:28,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:04:28,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:04:28,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:04:28,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:04:28,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:04:28,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 587 out of 1464 [2023-08-30 11:04:28,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 588.6666666666666) internal successors, (1766), 3 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:28,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:04:28,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 587 of 1464 [2023-08-30 11:04:28,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:04:29,631 INFO L130 PetriNetUnfolder]: 4785/7793 cut-off events. [2023-08-30 11:04:29,631 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-30 11:04:29,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15739 conditions, 7793 events. 4785/7793 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 49905 event pairs, 4020 based on Foata normal form. 2/3155 useless extension candidates. Maximal degree in co-relation 15665. Up to 7789 conditions per place. [2023-08-30 11:04:29,668 INFO L137 encePairwiseOnDemand]: 1459/1464 looper letters, 58 selfloop transitions, 7 changer transitions 0/65 dead transitions. [2023-08-30 11:04:29,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 65 transitions, 353 flow [2023-08-30 11:04:29,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:04:29,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:04:29,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1819 transitions. [2023-08-30 11:04:29,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41416211293260474 [2023-08-30 11:04:29,675 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1819 transitions. [2023-08-30 11:04:29,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1819 transitions. [2023-08-30 11:04:29,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:04:29,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1819 transitions. [2023-08-30 11:04:29,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 606.3333333333334) internal successors, (1819), 3 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:29,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:29,690 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:29,690 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 227 flow. Second operand 3 states and 1819 transitions. [2023-08-30 11:04:29,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 65 transitions, 353 flow [2023-08-30 11:04:29,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 65 transitions, 340 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 11:04:29,693 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 233 flow [2023-08-30 11:04:29,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2023-08-30 11:04:29,694 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2023-08-30 11:04:29,694 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 233 flow [2023-08-30 11:04:29,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 588.6666666666666) internal successors, (1766), 3 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:29,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:04:29,695 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:04:29,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 11:04:29,696 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 11:04:29,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:04:29,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1792338020, now seen corresponding path program 2 times [2023-08-30 11:04:29,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:04:29,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823261713] [2023-08-30 11:04:29,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:29,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:04:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:29,763 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:04:29,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:04:29,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823261713] [2023-08-30 11:04:29,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823261713] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:04:29,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65504282] [2023-08-30 11:04:29,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:04:29,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:04:29,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:04:29,765 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 11:04:29,792 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 11:04:29,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:04:29,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:04:29,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:04:29,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:04:29,908 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 11:04:29,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:04:29,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65504282] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:04:29,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:04:29,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:04:29,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645136145] [2023-08-30 11:04:29,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:04:29,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:04:29,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:04:29,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:04:29,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:04:29,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 591 out of 1464 [2023-08-30 11:04:29,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 592.0) internal successors, (1776), 3 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:29,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:04:29,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 591 of 1464 [2023-08-30 11:04:29,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:04:31,058 INFO L130 PetriNetUnfolder]: 4785/7791 cut-off events. [2023-08-30 11:04:31,058 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2023-08-30 11:04:31,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15734 conditions, 7791 events. 4785/7791 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 49828 event pairs, 4020 based on Foata normal form. 2/3153 useless extension candidates. Maximal degree in co-relation 15673. Up to 7791 conditions per place. [2023-08-30 11:04:31,089 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 62 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2023-08-30 11:04:31,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 339 flow [2023-08-30 11:04:31,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:04:31,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:04:31,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1827 transitions. [2023-08-30 11:04:31,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41598360655737704 [2023-08-30 11:04:31,095 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1827 transitions. [2023-08-30 11:04:31,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1827 transitions. [2023-08-30 11:04:31,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:04:31,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1827 transitions. [2023-08-30 11:04:31,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 609.0) internal successors, (1827), 3 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:31,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:31,106 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:31,106 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 233 flow. Second operand 3 states and 1827 transitions. [2023-08-30 11:04:31,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 339 flow [2023-08-30 11:04:31,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 299 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-30 11:04:31,110 INFO L231 Difference]: Finished difference. Result has 57 places, 63 transitions, 175 flow [2023-08-30 11:04:31,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=57, PETRI_TRANSITIONS=63} [2023-08-30 11:04:31,112 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -13 predicate places. [2023-08-30 11:04:31,112 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 63 transitions, 175 flow [2023-08-30 11:04:31,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 592.0) internal successors, (1776), 3 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:31,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:04:31,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:04:31,118 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 11:04:31,318 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 11:04:31,319 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 11:04:31,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:04:31,319 INFO L85 PathProgramCache]: Analyzing trace with hash -232736656, now seen corresponding path program 1 times [2023-08-30 11:04:31,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:04:31,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766247985] [2023-08-30 11:04:31,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:31,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:04:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:04:31,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:04:31,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766247985] [2023-08-30 11:04:31,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766247985] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:04:31,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:04:31,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:04:31,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332872711] [2023-08-30 11:04:31,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:04:31,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:04:31,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:04:31,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:04:31,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:04:31,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 593 out of 1464 [2023-08-30 11:04:31,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 63 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 595.3333333333334) internal successors, (1786), 3 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:31,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:04:31,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 593 of 1464 [2023-08-30 11:04:31,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:04:32,280 INFO L130 PetriNetUnfolder]: 4301/6995 cut-off events. [2023-08-30 11:04:32,280 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-30 11:04:32,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14115 conditions, 6995 events. 4301/6995 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 43924 event pairs, 3576 based on Foata normal form. 0/2899 useless extension candidates. Maximal degree in co-relation 14106. Up to 6995 conditions per place. [2023-08-30 11:04:32,307 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 60 selfloop transitions, 1 changer transitions 0/61 dead transitions. [2023-08-30 11:04:32,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 61 transitions, 293 flow [2023-08-30 11:04:32,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:04:32,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:04:32,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1831 transitions. [2023-08-30 11:04:32,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4168943533697632 [2023-08-30 11:04:32,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1831 transitions. [2023-08-30 11:04:32,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1831 transitions. [2023-08-30 11:04:32,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:04:32,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1831 transitions. [2023-08-30 11:04:32,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 610.3333333333334) internal successors, (1831), 3 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:32,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:32,325 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:32,325 INFO L175 Difference]: Start difference. First operand has 57 places, 63 transitions, 175 flow. Second operand 3 states and 1831 transitions. [2023-08-30 11:04:32,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 61 transitions, 293 flow [2023-08-30 11:04:32,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 61 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:04:32,327 INFO L231 Difference]: Finished difference. Result has 56 places, 61 transitions, 172 flow [2023-08-30 11:04:32,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=56, PETRI_TRANSITIONS=61} [2023-08-30 11:04:32,331 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -14 predicate places. [2023-08-30 11:04:32,331 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 61 transitions, 172 flow [2023-08-30 11:04:32,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 595.3333333333334) internal successors, (1786), 3 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:32,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:04:32,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:04:32,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 11:04:32,332 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 11:04:32,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:04:32,333 INFO L85 PathProgramCache]: Analyzing trace with hash -232736595, now seen corresponding path program 1 times [2023-08-30 11:04:32,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:04:32,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515739569] [2023-08-30 11:04:32,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:32,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:04:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:04:32,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:04:32,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515739569] [2023-08-30 11:04:32,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515739569] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:04:32,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125387642] [2023-08-30 11:04:32,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:32,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:04:32,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:04:32,422 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 11:04:32,425 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 11:04:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:32,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:04:32,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:04:32,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:04:32,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:04:32,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:04:32,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125387642] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:04:32,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:04:32,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-08-30 11:04:32,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929340545] [2023-08-30 11:04:32,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:04:32,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 11:04:32,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:04:32,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 11:04:32,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:04:32,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 583 out of 1464 [2023-08-30 11:04:32,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 61 transitions, 172 flow. Second operand has 8 states, 8 states have (on average 584.875) internal successors, (4679), 8 states have internal predecessors, (4679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:32,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:04:32,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 583 of 1464 [2023-08-30 11:04:32,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:04:33,099 INFO L130 PetriNetUnfolder]: 1076/1757 cut-off events. [2023-08-30 11:04:33,099 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-30 11:04:33,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3562 conditions, 1757 events. 1076/1757 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8478 event pairs, 894 based on Foata normal form. 6/739 useless extension candidates. Maximal degree in co-relation 3552. Up to 1750 conditions per place. [2023-08-30 11:04:33,107 INFO L137 encePairwiseOnDemand]: 1459/1464 looper letters, 48 selfloop transitions, 10 changer transitions 0/58 dead transitions. [2023-08-30 11:04:33,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 58 transitions, 271 flow [2023-08-30 11:04:33,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:04:33,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:04:33,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3562 transitions. [2023-08-30 11:04:33,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40551001821493626 [2023-08-30 11:04:33,116 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3562 transitions. [2023-08-30 11:04:33,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3562 transitions. [2023-08-30 11:04:33,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:04:33,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3562 transitions. [2023-08-30 11:04:33,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 593.6666666666666) internal successors, (3562), 6 states have internal predecessors, (3562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:33,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1464.0) internal successors, (10248), 7 states have internal predecessors, (10248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:33,135 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1464.0) internal successors, (10248), 7 states have internal predecessors, (10248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:33,135 INFO L175 Difference]: Start difference. First operand has 56 places, 61 transitions, 172 flow. Second operand 6 states and 3562 transitions. [2023-08-30 11:04:33,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 58 transitions, 271 flow [2023-08-30 11:04:33,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 58 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:04:33,137 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 192 flow [2023-08-30 11:04:33,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2023-08-30 11:04:33,137 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2023-08-30 11:04:33,138 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 192 flow [2023-08-30 11:04:33,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 584.875) internal successors, (4679), 8 states have internal predecessors, (4679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:33,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:04:33,139 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2023-08-30 11:04:33,147 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 11:04:33,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:04:33,344 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 11:04:33,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:04:33,345 INFO L85 PathProgramCache]: Analyzing trace with hash 443889036, now seen corresponding path program 2 times [2023-08-30 11:04:33,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:04:33,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555774068] [2023-08-30 11:04:33,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:33,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:04:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:33,460 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:04:33,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:04:33,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555774068] [2023-08-30 11:04:33,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555774068] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:04:33,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662540742] [2023-08-30 11:04:33,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:04:33,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:04:33,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:04:33,463 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 11:04:33,465 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 11:04:33,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:04:33,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:04:33,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:04:33,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:04:33,619 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-30 11:04:33,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:04:33,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662540742] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:04:33,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:04:33,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-08-30 11:04:33,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793950617] [2023-08-30 11:04:33,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:04:33,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:04:33,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:04:33,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:04:33,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:04:33,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 593 out of 1464 [2023-08-30 11:04:33,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 595.3333333333334) internal successors, (1786), 3 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:33,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:04:33,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 593 of 1464 [2023-08-30 11:04:33,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:04:33,934 INFO L130 PetriNetUnfolder]: 961/1568 cut-off events. [2023-08-30 11:04:33,934 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-30 11:04:33,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3205 conditions, 1568 events. 961/1568 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 7357 event pairs, 789 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 3191. Up to 1568 conditions per place. [2023-08-30 11:04:33,941 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 55 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-08-30 11:04:33,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 56 transitions, 300 flow [2023-08-30 11:04:33,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:04:33,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:04:33,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1829 transitions. [2023-08-30 11:04:33,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41643897996357016 [2023-08-30 11:04:33,947 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1829 transitions. [2023-08-30 11:04:33,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1829 transitions. [2023-08-30 11:04:33,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:04:33,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1829 transitions. [2023-08-30 11:04:33,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 609.6666666666666) internal successors, (1829), 3 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:33,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:33,958 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:33,958 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 192 flow. Second operand 3 states and 1829 transitions. [2023-08-30 11:04:33,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 56 transitions, 300 flow [2023-08-30 11:04:33,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 280 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 11:04:33,960 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 170 flow [2023-08-30 11:04:33,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2023-08-30 11:04:33,962 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -12 predicate places. [2023-08-30 11:04:33,962 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 170 flow [2023-08-30 11:04:33,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 595.3333333333334) internal successors, (1786), 3 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:33,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:04:33,963 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2023-08-30 11:04:33,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 11:04:34,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:04:34,169 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 11:04:34,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:04:34,170 INFO L85 PathProgramCache]: Analyzing trace with hash 443889035, now seen corresponding path program 1 times [2023-08-30 11:04:34,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:04:34,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50119135] [2023-08-30 11:04:34,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:34,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:04:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:34,272 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:04:34,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:04:34,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50119135] [2023-08-30 11:04:34,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50119135] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:04:34,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127361149] [2023-08-30 11:04:34,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:34,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:04:34,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:04:34,275 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 11:04:34,301 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 11:04:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:34,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 11:04:34,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:04:34,507 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:04:34,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:04:34,539 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:04:34,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127361149] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:04:34,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:04:34,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 11:04:34,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424300660] [2023-08-30 11:04:34,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:04:34,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:04:34,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:04:34,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:04:34,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:04:34,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 583 out of 1464 [2023-08-30 11:04:34,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 170 flow. Second operand has 13 states, 13 states have (on average 584.3846153846154) internal successors, (7597), 13 states have internal predecessors, (7597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:34,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:04:34,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 583 of 1464 [2023-08-30 11:04:34,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:04:35,052 INFO L130 PetriNetUnfolder]: 961/1570 cut-off events. [2023-08-30 11:04:35,052 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 11:04:35,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3202 conditions, 1570 events. 961/1570 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7284 event pairs, 789 based on Foata normal form. 2/676 useless extension candidates. Maximal degree in co-relation 3188. Up to 1561 conditions per place. [2023-08-30 11:04:35,057 INFO L137 encePairwiseOnDemand]: 1459/1464 looper letters, 46 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2023-08-30 11:04:35,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 58 transitions, 294 flow [2023-08-30 11:04:35,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:04:35,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:04:35,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4141 transitions. [2023-08-30 11:04:35,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4040788446526151 [2023-08-30 11:04:35,067 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4141 transitions. [2023-08-30 11:04:35,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4141 transitions. [2023-08-30 11:04:35,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:04:35,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4141 transitions. [2023-08-30 11:04:35,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 591.5714285714286) internal successors, (4141), 7 states have internal predecessors, (4141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:35,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1464.0) internal successors, (11712), 8 states have internal predecessors, (11712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:35,087 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1464.0) internal successors, (11712), 8 states have internal predecessors, (11712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:35,087 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 170 flow. Second operand 7 states and 4141 transitions. [2023-08-30 11:04:35,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 58 transitions, 294 flow [2023-08-30 11:04:35,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 58 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:04:35,089 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 211 flow [2023-08-30 11:04:35,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=211, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2023-08-30 11:04:35,090 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -6 predicate places. [2023-08-30 11:04:35,090 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 211 flow [2023-08-30 11:04:35,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 584.3846153846154) internal successors, (7597), 13 states have internal predecessors, (7597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:35,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:04:35,092 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2023-08-30 11:04:35,103 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 11:04:35,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:04:35,298 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 11:04:35,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:04:35,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1858375828, now seen corresponding path program 2 times [2023-08-30 11:04:35,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:04:35,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828571811] [2023-08-30 11:04:35,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:35,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:04:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:35,386 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 11:04:35,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:04:35,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828571811] [2023-08-30 11:04:35,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828571811] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:04:35,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:04:35,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:04:35,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693205684] [2023-08-30 11:04:35,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:04:35,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:04:35,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:04:35,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:04:35,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:04:35,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 593 out of 1464 [2023-08-30 11:04:35,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 595.3333333333334) internal successors, (1786), 3 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:35,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:04:35,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 593 of 1464 [2023-08-30 11:04:35,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:04:35,683 INFO L130 PetriNetUnfolder]: 852/1391 cut-off events. [2023-08-30 11:04:35,683 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-30 11:04:35,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2861 conditions, 1391 events. 852/1391 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6237 event pairs, 690 based on Foata normal form. 0/615 useless extension candidates. Maximal degree in co-relation 2845. Up to 1391 conditions per place. [2023-08-30 11:04:35,689 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 55 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-08-30 11:04:35,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 56 transitions, 319 flow [2023-08-30 11:04:35,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:04:35,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:04:35,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1827 transitions. [2023-08-30 11:04:35,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41598360655737704 [2023-08-30 11:04:35,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1827 transitions. [2023-08-30 11:04:35,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1827 transitions. [2023-08-30 11:04:35,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:04:35,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1827 transitions. [2023-08-30 11:04:35,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 609.0) internal successors, (1827), 3 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:35,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:35,704 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:35,704 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 211 flow. Second operand 3 states and 1827 transitions. [2023-08-30 11:04:35,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 56 transitions, 319 flow [2023-08-30 11:04:35,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 299 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 11:04:35,706 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 189 flow [2023-08-30 11:04:35,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-08-30 11:04:35,707 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -10 predicate places. [2023-08-30 11:04:35,708 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 189 flow [2023-08-30 11:04:35,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 595.3333333333334) internal successors, (1786), 3 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:35,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:04:35,709 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2023-08-30 11:04:35,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 11:04:35,709 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 11:04:35,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:04:35,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1858375829, now seen corresponding path program 1 times [2023-08-30 11:04:35,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:04:35,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625722004] [2023-08-30 11:04:35,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:35,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:04:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:35,784 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 11:04:35,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:04:35,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625722004] [2023-08-30 11:04:35,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625722004] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:04:35,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:04:35,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:04:35,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156049043] [2023-08-30 11:04:35,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:04:35,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:04:35,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:04:35,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:04:35,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:04:35,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 593 out of 1464 [2023-08-30 11:04:35,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 595.3333333333334) internal successors, (1786), 3 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:35,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:04:35,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 593 of 1464 [2023-08-30 11:04:35,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:04:36,043 INFO L130 PetriNetUnfolder]: 749/1222 cut-off events. [2023-08-30 11:04:36,044 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 11:04:36,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2514 conditions, 1222 events. 749/1222 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5287 event pairs, 597 based on Foata normal form. 0/558 useless extension candidates. Maximal degree in co-relation 2497. Up to 1222 conditions per place. [2023-08-30 11:04:36,047 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 53 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2023-08-30 11:04:36,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 54 transitions, 293 flow [2023-08-30 11:04:36,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:04:36,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:04:36,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1825 transitions. [2023-08-30 11:04:36,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415528233151184 [2023-08-30 11:04:36,051 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1825 transitions. [2023-08-30 11:04:36,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1825 transitions. [2023-08-30 11:04:36,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:04:36,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1825 transitions. [2023-08-30 11:04:36,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 608.3333333333334) internal successors, (1825), 3 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:36,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:36,059 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:36,059 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 189 flow. Second operand 3 states and 1825 transitions. [2023-08-30 11:04:36,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 54 transitions, 293 flow [2023-08-30 11:04:36,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 54 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:04:36,061 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 186 flow [2023-08-30 11:04:36,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2023-08-30 11:04:36,061 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -11 predicate places. [2023-08-30 11:04:36,061 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 186 flow [2023-08-30 11:04:36,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 595.3333333333334) internal successors, (1786), 3 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:36,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:04:36,062 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2023-08-30 11:04:36,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 11:04:36,062 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 11:04:36,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:04:36,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1775075069, now seen corresponding path program 1 times [2023-08-30 11:04:36,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:04:36,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993221373] [2023-08-30 11:04:36,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:36,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:04:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:36,124 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 11:04:36,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:04:36,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993221373] [2023-08-30 11:04:36,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993221373] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:04:36,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:04:36,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:04:36,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244320543] [2023-08-30 11:04:36,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:04:36,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:04:36,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:04:36,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:04:36,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:04:36,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 593 out of 1464 [2023-08-30 11:04:36,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 595.6666666666666) internal successors, (1787), 3 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:36,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:04:36,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 593 of 1464 [2023-08-30 11:04:36,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:04:36,349 INFO L130 PetriNetUnfolder]: 652/1063 cut-off events. [2023-08-30 11:04:36,350 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-08-30 11:04:36,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2196 conditions, 1063 events. 652/1063 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4422 event pairs, 510 based on Foata normal form. 0/503 useless extension candidates. Maximal degree in co-relation 2178. Up to 1063 conditions per place. [2023-08-30 11:04:36,354 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 51 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2023-08-30 11:04:36,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 52 transitions, 286 flow [2023-08-30 11:04:36,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:04:36,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:04:36,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1823 transitions. [2023-08-30 11:04:36,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4150728597449909 [2023-08-30 11:04:36,359 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1823 transitions. [2023-08-30 11:04:36,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1823 transitions. [2023-08-30 11:04:36,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:04:36,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1823 transitions. [2023-08-30 11:04:36,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 607.6666666666666) internal successors, (1823), 3 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:36,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:36,367 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:36,367 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 186 flow. Second operand 3 states and 1823 transitions. [2023-08-30 11:04:36,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 52 transitions, 286 flow [2023-08-30 11:04:36,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 52 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:04:36,369 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 183 flow [2023-08-30 11:04:36,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2023-08-30 11:04:36,370 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -12 predicate places. [2023-08-30 11:04:36,370 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 183 flow [2023-08-30 11:04:36,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 595.6666666666666) internal successors, (1787), 3 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:36,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:04:36,370 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2023-08-30 11:04:36,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 11:04:36,371 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 11:04:36,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:04:36,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1775075023, now seen corresponding path program 1 times [2023-08-30 11:04:36,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:04:36,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142341410] [2023-08-30 11:04:36,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:36,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:04:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:36,427 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 11:04:36,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:04:36,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142341410] [2023-08-30 11:04:36,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142341410] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:04:36,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:04:36,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:04:36,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903550102] [2023-08-30 11:04:36,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:04:36,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:04:36,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:04:36,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:04:36,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:04:36,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 587 out of 1464 [2023-08-30 11:04:36,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 589.6666666666666) internal successors, (1769), 3 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:36,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:04:36,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 587 of 1464 [2023-08-30 11:04:36,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:04:36,818 INFO L130 PetriNetUnfolder]: 971/1580 cut-off events. [2023-08-30 11:04:36,818 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-08-30 11:04:36,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3240 conditions, 1580 events. 971/1580 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6623 event pairs, 510 based on Foata normal form. 0/820 useless extension candidates. Maximal degree in co-relation 3221. Up to 1064 conditions per place. [2023-08-30 11:04:36,824 INFO L137 encePairwiseOnDemand]: 1453/1464 looper letters, 75 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-08-30 11:04:36,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 77 transitions, 389 flow [2023-08-30 11:04:36,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:04:36,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:04:36,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1837 transitions. [2023-08-30 11:04:36,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41826047358834245 [2023-08-30 11:04:36,829 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1837 transitions. [2023-08-30 11:04:36,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1837 transitions. [2023-08-30 11:04:36,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:04:36,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1837 transitions. [2023-08-30 11:04:36,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 612.3333333333334) internal successors, (1837), 3 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:36,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:36,836 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:36,837 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 183 flow. Second operand 3 states and 1837 transitions. [2023-08-30 11:04:36,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 77 transitions, 389 flow [2023-08-30 11:04:36,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 77 transitions, 388 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:04:36,839 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 210 flow [2023-08-30 11:04:36,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2023-08-30 11:04:36,839 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -10 predicate places. [2023-08-30 11:04:36,840 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 210 flow [2023-08-30 11:04:36,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 589.6666666666666) internal successors, (1769), 3 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:36,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:04:36,840 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:04:36,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 11:04:36,840 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 11:04:36,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:04:36,841 INFO L85 PathProgramCache]: Analyzing trace with hash -751514120, now seen corresponding path program 1 times [2023-08-30 11:04:36,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:04:36,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666312502] [2023-08-30 11:04:36,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:36,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:04:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:36,957 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 11:04:36,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:04:36,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666312502] [2023-08-30 11:04:36,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666312502] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:04:36,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:04:36,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:04:36,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103699338] [2023-08-30 11:04:36,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:04:36,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:04:36,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:04:36,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:04:36,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:04:36,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 587 out of 1464 [2023-08-30 11:04:36,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 590.3333333333334) internal successors, (1771), 3 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:36,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:04:36,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 587 of 1464 [2023-08-30 11:04:36,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:04:37,390 INFO L130 PetriNetUnfolder]: 1159/1888 cut-off events. [2023-08-30 11:04:37,390 INFO L131 PetriNetUnfolder]: For 115/115 co-relation queries the response was YES. [2023-08-30 11:04:37,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4169 conditions, 1888 events. 1159/1888 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8576 event pairs, 769 based on Foata normal form. 0/1108 useless extension candidates. Maximal degree in co-relation 4149. Up to 1581 conditions per place. [2023-08-30 11:04:37,397 INFO L137 encePairwiseOnDemand]: 1456/1464 looper letters, 78 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2023-08-30 11:04:37,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 80 transitions, 451 flow [2023-08-30 11:04:37,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:04:37,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:04:37,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1835 transitions. [2023-08-30 11:04:37,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41780510018214934 [2023-08-30 11:04:37,404 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1835 transitions. [2023-08-30 11:04:37,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1835 transitions. [2023-08-30 11:04:37,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:04:37,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1835 transitions. [2023-08-30 11:04:37,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 611.6666666666666) internal successors, (1835), 3 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:37,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:37,412 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:37,412 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 210 flow. Second operand 3 states and 1835 transitions. [2023-08-30 11:04:37,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 80 transitions, 451 flow [2023-08-30 11:04:37,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 80 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:04:37,414 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 230 flow [2023-08-30 11:04:37,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2023-08-30 11:04:37,415 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -8 predicate places. [2023-08-30 11:04:37,415 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 230 flow [2023-08-30 11:04:37,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 590.3333333333334) internal successors, (1771), 3 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:37,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:04:37,416 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:04:37,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 11:04:37,416 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 11:04:37,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:04:37,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1822098570, now seen corresponding path program 1 times [2023-08-30 11:04:37,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:04:37,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905877848] [2023-08-30 11:04:37,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:37,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:04:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:37,495 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-08-30 11:04:37,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:04:37,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905877848] [2023-08-30 11:04:37,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905877848] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:04:37,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:04:37,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:04:37,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874459858] [2023-08-30 11:04:37,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:04:37,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:04:37,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:04:37,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:04:37,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:04:37,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 593 out of 1464 [2023-08-30 11:04:37,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 596.6666666666666) internal successors, (1790), 3 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:37,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:04:37,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 593 of 1464 [2023-08-30 11:04:37,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:04:37,885 INFO L130 PetriNetUnfolder]: 1031/1678 cut-off events. [2023-08-30 11:04:37,886 INFO L131 PetriNetUnfolder]: For 311/311 co-relation queries the response was YES. [2023-08-30 11:04:37,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4201 conditions, 1678 events. 1031/1678 cut-off events. For 311/311 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 7110 event pairs, 825 based on Foata normal form. 0/1190 useless extension candidates. Maximal degree in co-relation 4180. Up to 1678 conditions per place. [2023-08-30 11:04:37,891 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 51 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2023-08-30 11:04:37,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 52 transitions, 326 flow [2023-08-30 11:04:37,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:04:37,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:04:37,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1821 transitions. [2023-08-30 11:04:37,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146174863387978 [2023-08-30 11:04:37,895 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1821 transitions. [2023-08-30 11:04:37,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1821 transitions. [2023-08-30 11:04:37,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:04:37,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1821 transitions. [2023-08-30 11:04:37,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 607.0) internal successors, (1821), 3 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:37,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:37,902 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:37,902 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 230 flow. Second operand 3 states and 1821 transitions. [2023-08-30 11:04:37,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 52 transitions, 326 flow [2023-08-30 11:04:37,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 52 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:04:37,905 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 222 flow [2023-08-30 11:04:37,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2023-08-30 11:04:37,905 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -9 predicate places. [2023-08-30 11:04:37,906 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 222 flow [2023-08-30 11:04:37,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 596.6666666666666) internal successors, (1790), 3 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:37,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:04:37,906 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:04:37,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 11:04:37,906 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 11:04:37,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:04:37,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1822098483, now seen corresponding path program 1 times [2023-08-30 11:04:37,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:04:37,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824109682] [2023-08-30 11:04:37,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:37,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:04:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:38,060 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 11:04:38,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:04:38,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824109682] [2023-08-30 11:04:38,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824109682] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:04:38,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312401962] [2023-08-30 11:04:38,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:38,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:04:38,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:04:38,063 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 11:04:38,066 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 11:04:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:38,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 11:04:38,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:04:38,262 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 11:04:38,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:04:38,353 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 11:04:38,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312401962] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:04:38,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:04:38,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 11:04:38,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886565242] [2023-08-30 11:04:38,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:04:38,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:04:38,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:04:38,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:04:38,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:04:38,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 587 out of 1464 [2023-08-30 11:04:38,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 222 flow. Second operand has 7 states, 7 states have (on average 589.2857142857143) internal successors, (4125), 7 states have internal predecessors, (4125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:38,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:04:38,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 587 of 1464 [2023-08-30 11:04:38,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:04:39,351 INFO L130 PetriNetUnfolder]: 2099/3094 cut-off events. [2023-08-30 11:04:39,351 INFO L131 PetriNetUnfolder]: For 290/290 co-relation queries the response was YES. [2023-08-30 11:04:39,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7804 conditions, 3094 events. 2099/3094 cut-off events. For 290/290 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 13263 event pairs, 410 based on Foata normal form. 0/1976 useless extension candidates. Maximal degree in co-relation 7782. Up to 1103 conditions per place. [2023-08-30 11:04:39,364 INFO L137 encePairwiseOnDemand]: 1457/1464 looper letters, 171 selfloop transitions, 17 changer transitions 0/188 dead transitions. [2023-08-30 11:04:39,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 188 transitions, 1009 flow [2023-08-30 11:04:39,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:04:39,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:04:39,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4287 transitions. [2023-08-30 11:04:39,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4183255269320843 [2023-08-30 11:04:39,372 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4287 transitions. [2023-08-30 11:04:39,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4287 transitions. [2023-08-30 11:04:39,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:04:39,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4287 transitions. [2023-08-30 11:04:39,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 612.4285714285714) internal successors, (4287), 7 states have internal predecessors, (4287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:39,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1464.0) internal successors, (11712), 8 states have internal predecessors, (11712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:39,385 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1464.0) internal successors, (11712), 8 states have internal predecessors, (11712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:39,386 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 222 flow. Second operand 7 states and 4287 transitions. [2023-08-30 11:04:39,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 188 transitions, 1009 flow [2023-08-30 11:04:39,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 188 transitions, 1008 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:04:39,389 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 332 flow [2023-08-30 11:04:39,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=332, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2023-08-30 11:04:39,390 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -1 predicate places. [2023-08-30 11:04:39,390 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 332 flow [2023-08-30 11:04:39,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 589.2857142857143) internal successors, (4125), 7 states have internal predecessors, (4125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:39,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:04:39,391 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:04:39,396 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 11:04:39,596 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 11:04:39,597 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 11:04:39,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:04:39,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1822098487, now seen corresponding path program 1 times [2023-08-30 11:04:39,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:04:39,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608486266] [2023-08-30 11:04:39,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:39,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:04:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:39,685 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 11:04:39,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:04:39,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608486266] [2023-08-30 11:04:39,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608486266] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:04:39,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:04:39,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:04:39,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701498422] [2023-08-30 11:04:39,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:04:39,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:04:39,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:04:39,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:04:39,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:04:39,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 587 out of 1464 [2023-08-30 11:04:39,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 590.6666666666666) internal successors, (1772), 3 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:39,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:04:39,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 587 of 1464 [2023-08-30 11:04:39,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:04:40,311 INFO L130 PetriNetUnfolder]: 1569/2448 cut-off events. [2023-08-30 11:04:40,311 INFO L131 PetriNetUnfolder]: For 1898/1898 co-relation queries the response was YES. [2023-08-30 11:04:40,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7283 conditions, 2448 events. 1569/2448 cut-off events. For 1898/1898 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 10501 event pairs, 1157 based on Foata normal form. 0/2004 useless extension candidates. Maximal degree in co-relation 7258. Up to 2448 conditions per place. [2023-08-30 11:04:40,321 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 55 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-08-30 11:04:40,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 56 transitions, 390 flow [2023-08-30 11:04:40,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:04:40,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:04:40,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1801 transitions. [2023-08-30 11:04:40,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41006375227686703 [2023-08-30 11:04:40,324 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1801 transitions. [2023-08-30 11:04:40,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1801 transitions. [2023-08-30 11:04:40,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:04:40,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1801 transitions. [2023-08-30 11:04:40,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 600.3333333333334) internal successors, (1801), 3 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:40,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:40,329 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:40,329 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 332 flow. Second operand 3 states and 1801 transitions. [2023-08-30 11:04:40,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 56 transitions, 390 flow [2023-08-30 11:04:40,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 56 transitions, 376 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 11:04:40,332 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 266 flow [2023-08-30 11:04:40,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2023-08-30 11:04:40,333 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -2 predicate places. [2023-08-30 11:04:40,333 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 266 flow [2023-08-30 11:04:40,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 590.6666666666666) internal successors, (1772), 3 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:40,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:04:40,333 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:04:40,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 11:04:40,334 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 11:04:40,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:04:40,334 INFO L85 PathProgramCache]: Analyzing trace with hash -650475523, now seen corresponding path program 1 times [2023-08-30 11:04:40,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:04:40,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132981920] [2023-08-30 11:04:40,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:40,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:04:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:40,476 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 11:04:40,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:04:40,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132981920] [2023-08-30 11:04:40,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132981920] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:04:40,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818797042] [2023-08-30 11:04:40,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:40,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:04:40,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:04:40,478 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 11:04:40,508 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 11:04:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:40,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:04:40,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:04:40,710 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 11:04:40,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:04:40,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818797042] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:04:40,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:04:40,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-30 11:04:40,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148960029] [2023-08-30 11:04:40,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:04:40,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:04:40,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:04:40,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:04:40,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:04:40,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 587 out of 1464 [2023-08-30 11:04:40,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 266 flow. Second operand has 5 states, 5 states have (on average 589.4) internal successors, (2947), 5 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:40,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:04:40,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 587 of 1464 [2023-08-30 11:04:40,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:04:41,345 INFO L130 PetriNetUnfolder]: 1337/2216 cut-off events. [2023-08-30 11:04:41,346 INFO L131 PetriNetUnfolder]: For 524/524 co-relation queries the response was YES. [2023-08-30 11:04:41,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5951 conditions, 2216 events. 1337/2216 cut-off events. For 524/524 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 10755 event pairs, 161 based on Foata normal form. 116/2004 useless extension candidates. Maximal degree in co-relation 5924. Up to 1250 conditions per place. [2023-08-30 11:04:41,353 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 123 selfloop transitions, 3 changer transitions 0/126 dead transitions. [2023-08-30 11:04:41,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 126 transitions, 714 flow [2023-08-30 11:04:41,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:04:41,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:04:41,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3047 transitions. [2023-08-30 11:04:41,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4162568306010929 [2023-08-30 11:04:41,358 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3047 transitions. [2023-08-30 11:04:41,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3047 transitions. [2023-08-30 11:04:41,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:04:41,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3047 transitions. [2023-08-30 11:04:41,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 609.4) internal successors, (3047), 5 states have internal predecessors, (3047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:41,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1464.0) internal successors, (8784), 6 states have internal predecessors, (8784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:41,367 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1464.0) internal successors, (8784), 6 states have internal predecessors, (8784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:41,367 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 266 flow. Second operand 5 states and 3047 transitions. [2023-08-30 11:04:41,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 126 transitions, 714 flow [2023-08-30 11:04:41,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 126 transitions, 713 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:04:41,373 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 250 flow [2023-08-30 11:04:41,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2023-08-30 11:04:41,374 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -1 predicate places. [2023-08-30 11:04:41,374 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 250 flow [2023-08-30 11:04:41,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 589.4) internal successors, (2947), 5 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:41,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:04:41,375 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:04:41,385 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 11:04:41,581 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 11:04:41,581 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 11:04:41,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:04:41,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1958361601, now seen corresponding path program 1 times [2023-08-30 11:04:41,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:04:41,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825082435] [2023-08-30 11:04:41,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:41,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:04:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:41,828 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-08-30 11:04:41,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:04:41,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825082435] [2023-08-30 11:04:41,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825082435] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:04:41,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:04:41,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:04:41,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778265896] [2023-08-30 11:04:41,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:04:41,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:04:41,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:04:41,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:04:41,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:04:41,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 593 out of 1464 [2023-08-30 11:04:41,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 596.6666666666666) internal successors, (1790), 3 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:41,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:04:41,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 593 of 1464 [2023-08-30 11:04:41,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:04:42,334 INFO L130 PetriNetUnfolder]: 1205/1998 cut-off events. [2023-08-30 11:04:42,335 INFO L131 PetriNetUnfolder]: For 1591/1591 co-relation queries the response was YES. [2023-08-30 11:04:42,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5370 conditions, 1998 events. 1205/1998 cut-off events. For 1591/1591 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 9034 event pairs, 1035 based on Foata normal form. 0/1774 useless extension candidates. Maximal degree in co-relation 5343. Up to 1998 conditions per place. [2023-08-30 11:04:42,344 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 49 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2023-08-30 11:04:42,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 50 transitions, 336 flow [2023-08-30 11:04:42,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:04:42,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:04:42,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1816 transitions. [2023-08-30 11:04:42,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4134790528233151 [2023-08-30 11:04:42,348 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1816 transitions. [2023-08-30 11:04:42,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1816 transitions. [2023-08-30 11:04:42,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:04:42,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1816 transitions. [2023-08-30 11:04:42,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 605.3333333333334) internal successors, (1816), 3 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:42,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:42,355 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:42,355 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 250 flow. Second operand 3 states and 1816 transitions. [2023-08-30 11:04:42,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 50 transitions, 336 flow [2023-08-30 11:04:42,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 50 transitions, 331 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 11:04:42,359 INFO L231 Difference]: Finished difference. Result has 66 places, 50 transitions, 233 flow [2023-08-30 11:04:42,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=66, PETRI_TRANSITIONS=50} [2023-08-30 11:04:42,360 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -4 predicate places. [2023-08-30 11:04:42,360 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 50 transitions, 233 flow [2023-08-30 11:04:42,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 596.6666666666666) internal successors, (1790), 3 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:42,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:04:42,361 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:04:42,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 11:04:42,361 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 11:04:42,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:04:42,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1958361660, now seen corresponding path program 2 times [2023-08-30 11:04:42,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:04:42,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032173865] [2023-08-30 11:04:42,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:42,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:04:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 11:04:42,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:04:42,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032173865] [2023-08-30 11:04:42,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032173865] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:04:42,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430911069] [2023-08-30 11:04:42,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:04:42,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:04:42,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:04:42,711 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:04:42,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 11:04:42,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:04:42,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:04:42,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 11:04:42,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:04:42,947 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-08-30 11:04:42,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:04:42,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430911069] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:04:42,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:04:42,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-08-30 11:04:42,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019331651] [2023-08-30 11:04:42,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:04:42,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:04:42,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:04:42,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:04:42,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:04:42,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 593 out of 1464 [2023-08-30 11:04:42,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 50 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 596.6666666666666) internal successors, (1790), 3 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:42,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:04:42,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 593 of 1464 [2023-08-30 11:04:42,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:04:43,366 INFO L130 PetriNetUnfolder]: 1079/1790 cut-off events. [2023-08-30 11:04:43,366 INFO L131 PetriNetUnfolder]: For 1083/1083 co-relation queries the response was YES. [2023-08-30 11:04:43,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4548 conditions, 1790 events. 1079/1790 cut-off events. For 1083/1083 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7853 event pairs, 919 based on Foata normal form. 80/1662 useless extension candidates. Maximal degree in co-relation 4520. Up to 1790 conditions per place. [2023-08-30 11:04:43,372 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 43 selfloop transitions, 1 changer transitions 4/48 dead transitions. [2023-08-30 11:04:43,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 48 transitions, 315 flow [2023-08-30 11:04:43,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:04:43,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:04:43,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1814 transitions. [2023-08-30 11:04:43,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41302367941712204 [2023-08-30 11:04:43,375 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1814 transitions. [2023-08-30 11:04:43,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1814 transitions. [2023-08-30 11:04:43,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:04:43,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1814 transitions. [2023-08-30 11:04:43,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 604.6666666666666) internal successors, (1814), 3 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:43,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:43,379 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:43,380 INFO L175 Difference]: Start difference. First operand has 66 places, 50 transitions, 233 flow. Second operand 3 states and 1814 transitions. [2023-08-30 11:04:43,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 48 transitions, 315 flow [2023-08-30 11:04:43,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 48 transitions, 304 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 11:04:43,382 INFO L231 Difference]: Finished difference. Result has 61 places, 44 transitions, 201 flow [2023-08-30 11:04:43,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=201, PETRI_PLACES=61, PETRI_TRANSITIONS=44} [2023-08-30 11:04:43,383 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -9 predicate places. [2023-08-30 11:04:43,383 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 44 transitions, 201 flow [2023-08-30 11:04:43,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 596.6666666666666) internal successors, (1790), 3 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:43,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:04:43,383 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:04:43,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 11:04:43,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:04:43,584 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 11:04:43,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:04:43,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1247540455, now seen corresponding path program 1 times [2023-08-30 11:04:43,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:04:43,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637780807] [2023-08-30 11:04:43,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:43,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:04:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:43,650 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 11:04:43,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:04:43,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637780807] [2023-08-30 11:04:43,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637780807] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:04:43,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:04:43,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:04:43,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901072146] [2023-08-30 11:04:43,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:04:43,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:04:43,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:04:43,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:04:43,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:04:43,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 587 out of 1464 [2023-08-30 11:04:43,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 44 transitions, 201 flow. Second operand has 3 states, 3 states have (on average 593.3333333333334) internal successors, (1780), 3 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:43,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:04:43,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 587 of 1464 [2023-08-30 11:04:43,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:04:44,004 INFO L130 PetriNetUnfolder]: 891/1476 cut-off events. [2023-08-30 11:04:44,004 INFO L131 PetriNetUnfolder]: For 243/243 co-relation queries the response was YES. [2023-08-30 11:04:44,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3548 conditions, 1476 events. 891/1476 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6167 event pairs, 767 based on Foata normal form. 0/1346 useless extension candidates. Maximal degree in co-relation 3523. Up to 1476 conditions per place. [2023-08-30 11:04:44,009 INFO L137 encePairwiseOnDemand]: 1462/1464 looper letters, 42 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-08-30 11:04:44,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 43 transitions, 283 flow [2023-08-30 11:04:44,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:04:44,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:04:44,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1790 transitions. [2023-08-30 11:04:44,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075591985428051 [2023-08-30 11:04:44,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1790 transitions. [2023-08-30 11:04:44,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1790 transitions. [2023-08-30 11:04:44,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:04:44,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1790 transitions. [2023-08-30 11:04:44,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 596.6666666666666) internal successors, (1790), 3 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:44,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:44,017 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:44,017 INFO L175 Difference]: Start difference. First operand has 61 places, 44 transitions, 201 flow. Second operand 3 states and 1790 transitions. [2023-08-30 11:04:44,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 43 transitions, 283 flow [2023-08-30 11:04:44,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 43 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:04:44,019 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 198 flow [2023-08-30 11:04:44,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2023-08-30 11:04:44,019 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -12 predicate places. [2023-08-30 11:04:44,019 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 198 flow [2023-08-30 11:04:44,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 593.3333333333334) internal successors, (1780), 3 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:44,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:04:44,020 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:04:44,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 11:04:44,020 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 11:04:44,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:04:44,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1247540062, now seen corresponding path program 1 times [2023-08-30 11:04:44,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:04:44,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639120684] [2023-08-30 11:04:44,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:44,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:04:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:44,139 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 11:04:44,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:04:44,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639120684] [2023-08-30 11:04:44,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639120684] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:04:44,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30520072] [2023-08-30 11:04:44,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:44,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:04:44,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:04:44,141 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:04:44,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 11:04:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:44,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 11:04:44,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:04:44,398 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 11:04:44,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:04:44,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30520072] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:04:44,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:04:44,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 11:04:44,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957335556] [2023-08-30 11:04:44,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:04:44,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:04:44,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:04:44,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:04:44,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:04:44,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 587 out of 1464 [2023-08-30 11:04:44,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 591.75) internal successors, (2367), 4 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:44,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:04:44,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 587 of 1464 [2023-08-30 11:04:44,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:04:44,802 INFO L130 PetriNetUnfolder]: 777/1284 cut-off events. [2023-08-30 11:04:44,802 INFO L131 PetriNetUnfolder]: For 252/252 co-relation queries the response was YES. [2023-08-30 11:04:44,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3042 conditions, 1284 events. 777/1284 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 5099 event pairs, 11 based on Foata normal form. 26/1232 useless extension candidates. Maximal degree in co-relation 3016. Up to 692 conditions per place. [2023-08-30 11:04:44,806 INFO L137 encePairwiseOnDemand]: 1459/1464 looper letters, 68 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-08-30 11:04:44,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 70 transitions, 414 flow [2023-08-30 11:04:44,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:04:44,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:04:44,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2399 transitions. [2023-08-30 11:04:44,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40966530054644806 [2023-08-30 11:04:44,809 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2399 transitions. [2023-08-30 11:04:44,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2399 transitions. [2023-08-30 11:04:44,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:04:44,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2399 transitions. [2023-08-30 11:04:44,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 599.75) internal successors, (2399), 4 states have internal predecessors, (2399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:44,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1464.0) internal successors, (7320), 5 states have internal predecessors, (7320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:44,815 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1464.0) internal successors, (7320), 5 states have internal predecessors, (7320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:44,816 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 198 flow. Second operand 4 states and 2399 transitions. [2023-08-30 11:04:44,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 70 transitions, 414 flow [2023-08-30 11:04:44,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 70 transitions, 413 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:04:44,818 INFO L231 Difference]: Finished difference. Result has 57 places, 40 transitions, 189 flow [2023-08-30 11:04:44,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=57, PETRI_TRANSITIONS=40} [2023-08-30 11:04:44,818 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -13 predicate places. [2023-08-30 11:04:44,818 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 40 transitions, 189 flow [2023-08-30 11:04:44,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 591.75) internal successors, (2367), 4 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:44,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:04:44,819 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:04:44,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 11:04:45,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-30 11:04:45,025 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 11:04:45,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:04:45,025 INFO L85 PathProgramCache]: Analyzing trace with hash 19061962, now seen corresponding path program 1 times [2023-08-30 11:04:45,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:04:45,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103018180] [2023-08-30 11:04:45,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:45,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:04:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:45,111 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 11:04:45,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:04:45,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103018180] [2023-08-30 11:04:45,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103018180] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:04:45,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154060583] [2023-08-30 11:04:45,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:45,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:04:45,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:04:45,114 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:04:45,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 11:04:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:45,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 11:04:45,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:04:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 11:04:45,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:04:45,399 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 11:04:45,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154060583] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:04:45,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:04:45,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 11:04:45,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560892688] [2023-08-30 11:04:45,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:04:45,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:04:45,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:04:45,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:04:45,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:04:45,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 586 out of 1464 [2023-08-30 11:04:45,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 40 transitions, 189 flow. Second operand has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:45,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:04:45,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 586 of 1464 [2023-08-30 11:04:45,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:04:45,898 INFO L130 PetriNetUnfolder]: 1069/1758 cut-off events. [2023-08-30 11:04:45,898 INFO L131 PetriNetUnfolder]: For 413/413 co-relation queries the response was YES. [2023-08-30 11:04:45,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4121 conditions, 1758 events. 1069/1758 cut-off events. For 413/413 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6975 event pairs, 11 based on Foata normal form. 52/1732 useless extension candidates. Maximal degree in co-relation 4095. Up to 564 conditions per place. [2023-08-30 11:04:45,902 INFO L137 encePairwiseOnDemand]: 1459/1464 looper letters, 0 selfloop transitions, 0 changer transitions 100/100 dead transitions. [2023-08-30 11:04:45,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 100 transitions, 563 flow [2023-08-30 11:04:45,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:04:45,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:04:45,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3590 transitions. [2023-08-30 11:04:45,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4086976320582878 [2023-08-30 11:04:45,906 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3590 transitions. [2023-08-30 11:04:45,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3590 transitions. [2023-08-30 11:04:45,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:04:45,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3590 transitions. [2023-08-30 11:04:45,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 598.3333333333334) internal successors, (3590), 6 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:45,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1464.0) internal successors, (10248), 7 states have internal predecessors, (10248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:45,916 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1464.0) internal successors, (10248), 7 states have internal predecessors, (10248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:45,916 INFO L175 Difference]: Start difference. First operand has 57 places, 40 transitions, 189 flow. Second operand 6 states and 3590 transitions. [2023-08-30 11:04:45,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 100 transitions, 563 flow [2023-08-30 11:04:45,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 100 transitions, 560 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:04:45,919 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2023-08-30 11:04:45,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2023-08-30 11:04:45,919 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -12 predicate places. [2023-08-30 11:04:45,919 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2023-08-30 11:04:45,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:04:45,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (79 of 80 remaining) [2023-08-30 11:04:45,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (78 of 80 remaining) [2023-08-30 11:04:45,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (77 of 80 remaining) [2023-08-30 11:04:45,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (76 of 80 remaining) [2023-08-30 11:04:45,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (75 of 80 remaining) [2023-08-30 11:04:45,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (74 of 80 remaining) [2023-08-30 11:04:45,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (73 of 80 remaining) [2023-08-30 11:04:45,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (72 of 80 remaining) [2023-08-30 11:04:45,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (71 of 80 remaining) [2023-08-30 11:04:45,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (70 of 80 remaining) [2023-08-30 11:04:45,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (69 of 80 remaining) [2023-08-30 11:04:45,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (68 of 80 remaining) [2023-08-30 11:04:45,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (67 of 80 remaining) [2023-08-30 11:04:45,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (66 of 80 remaining) [2023-08-30 11:04:45,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (65 of 80 remaining) [2023-08-30 11:04:45,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (64 of 80 remaining) [2023-08-30 11:04:45,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (63 of 80 remaining) [2023-08-30 11:04:45,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (62 of 80 remaining) [2023-08-30 11:04:45,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (61 of 80 remaining) [2023-08-30 11:04:45,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (60 of 80 remaining) [2023-08-30 11:04:45,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 80 remaining) [2023-08-30 11:04:45,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 80 remaining) [2023-08-30 11:04:45,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 80 remaining) [2023-08-30 11:04:45,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 80 remaining) [2023-08-30 11:04:45,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 80 remaining) [2023-08-30 11:04:45,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 80 remaining) [2023-08-30 11:04:45,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 80 remaining) [2023-08-30 11:04:45,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 80 remaining) [2023-08-30 11:04:45,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 80 remaining) [2023-08-30 11:04:45,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 80 remaining) [2023-08-30 11:04:45,927 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 80 remaining) [2023-08-30 11:04:45,927 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 80 remaining) [2023-08-30 11:04:45,927 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 80 remaining) [2023-08-30 11:04:45,927 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 80 remaining) [2023-08-30 11:04:45,927 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 80 remaining) [2023-08-30 11:04:45,927 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 80 remaining) [2023-08-30 11:04:45,927 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 80 remaining) [2023-08-30 11:04:45,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 80 remaining) [2023-08-30 11:04:45,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 80 remaining) [2023-08-30 11:04:45,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 80 remaining) [2023-08-30 11:04:45,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 80 remaining) [2023-08-30 11:04:45,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 80 remaining) [2023-08-30 11:04:45,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 80 remaining) [2023-08-30 11:04:45,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 80 remaining) [2023-08-30 11:04:45,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 80 remaining) [2023-08-30 11:04:45,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 80 remaining) [2023-08-30 11:04:45,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 80 remaining) [2023-08-30 11:04:45,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 80 remaining) [2023-08-30 11:04:45,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 80 remaining) [2023-08-30 11:04:45,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 80 remaining) [2023-08-30 11:04:45,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 80 remaining) [2023-08-30 11:04:45,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 80 remaining) [2023-08-30 11:04:45,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 80 remaining) [2023-08-30 11:04:45,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 80 remaining) [2023-08-30 11:04:45,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 80 remaining) [2023-08-30 11:04:45,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 80 remaining) [2023-08-30 11:04:45,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 80 remaining) [2023-08-30 11:04:45,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 80 remaining) [2023-08-30 11:04:45,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 80 remaining) [2023-08-30 11:04:45,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 80 remaining) [2023-08-30 11:04:45,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 80 remaining) [2023-08-30 11:04:45,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 80 remaining) [2023-08-30 11:04:45,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 80 remaining) [2023-08-30 11:04:45,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 80 remaining) [2023-08-30 11:04:45,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 80 remaining) [2023-08-30 11:04:45,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 80 remaining) [2023-08-30 11:04:45,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 80 remaining) [2023-08-30 11:04:45,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 80 remaining) [2023-08-30 11:04:45,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 80 remaining) [2023-08-30 11:04:45,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 80 remaining) [2023-08-30 11:04:45,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 80 remaining) [2023-08-30 11:04:45,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 80 remaining) [2023-08-30 11:04:45,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 80 remaining) [2023-08-30 11:04:45,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 80 remaining) [2023-08-30 11:04:45,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 80 remaining) [2023-08-30 11:04:45,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 80 remaining) [2023-08-30 11:04:45,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 80 remaining) [2023-08-30 11:04:45,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 80 remaining) [2023-08-30 11:04:45,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 80 remaining) [2023-08-30 11:04:45,934 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 80 remaining) [2023-08-30 11:04:45,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-30 11:04:46,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-30 11:04:46,141 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:04:46,145 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 11:04:46,146 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 11:04:46,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:04:46 BasicIcfg [2023-08-30 11:04:46,148 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 11:04:46,149 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 11:04:46,149 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 11:04:46,149 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 11:04:46,149 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:03:39" (3/4) ... [2023-08-30 11:04:46,151 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 11:04:46,154 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 11:04:46,154 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 11:04:46,159 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-08-30 11:04:46,159 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 11:04:46,159 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 11:04:46,160 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 11:04:46,207 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 11:04:46,208 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 11:04:46,208 INFO L158 Benchmark]: Toolchain (without parser) took 68612.65ms. Allocated memory was 69.2MB in the beginning and 1.6GB in the end (delta: 1.6GB). Free memory was 46.9MB in the beginning and 1.0GB in the end (delta: -981.5MB). Peak memory consumption was 598.7MB. Max. memory is 16.1GB. [2023-08-30 11:04:46,208 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory is still 32.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 11:04:46,209 INFO L158 Benchmark]: CACSL2BoogieTranslator took 344.95ms. Allocated memory is still 69.2MB. Free memory was 46.7MB in the beginning and 33.3MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 11:04:46,209 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.97ms. Allocated memory is still 69.2MB. Free memory was 33.3MB in the beginning and 47.4MB in the end (delta: -14.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 11:04:46,209 INFO L158 Benchmark]: Boogie Preprocessor took 78.95ms. Allocated memory is still 69.2MB. Free memory was 47.4MB in the beginning and 44.8MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 11:04:46,209 INFO L158 Benchmark]: RCFGBuilder took 956.60ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 44.8MB in the beginning and 52.2MB in the end (delta: -7.5MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2023-08-30 11:04:46,210 INFO L158 Benchmark]: TraceAbstraction took 67080.41ms. Allocated memory was 83.9MB in the beginning and 1.6GB in the end (delta: 1.6GB). Free memory was 51.8MB in the beginning and 1.0GB in the end (delta: -980.8MB). Peak memory consumption was 580.9MB. Max. memory is 16.1GB. [2023-08-30 11:04:46,210 INFO L158 Benchmark]: Witness Printer took 58.85ms. Allocated memory is still 1.6GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 11:04:46,215 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory is still 32.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 344.95ms. Allocated memory is still 69.2MB. Free memory was 46.7MB in the beginning and 33.3MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.97ms. Allocated memory is still 69.2MB. Free memory was 33.3MB in the beginning and 47.4MB in the end (delta: -14.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.95ms. Allocated memory is still 69.2MB. Free memory was 47.4MB in the beginning and 44.8MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 956.60ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 44.8MB in the beginning and 52.2MB in the end (delta: -7.5MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. * TraceAbstraction took 67080.41ms. Allocated memory was 83.9MB in the beginning and 1.6GB in the end (delta: 1.6GB). Free memory was 51.8MB in the beginning and 1.0GB in the end (delta: -980.8MB). Peak memory consumption was 580.9MB. Max. memory is 16.1GB. * Witness Printer took 58.85ms. Allocated memory is still 1.6GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 42.3s, 557 PlacesBefore, 70 PlacesAfterwards, 610 TransitionsBefore, 70 TransitionsAfterwards, 105228 CoEnabledTransitionPairs, 9 FixpointIterations, 148 TrivialSequentialCompositions, 484 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 132 ConcurrentYvCompositions, 53 ChoiceCompositions, 837 TotalNumberOfCompositions, 103824 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 100807, independent: 100630, independent conditional: 0, independent unconditional: 100630, dependent: 177, dependent conditional: 0, dependent unconditional: 177, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 61900, independent: 61870, independent conditional: 0, independent unconditional: 61870, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 100807, independent: 38760, independent conditional: 0, independent unconditional: 38760, dependent: 147, dependent conditional: 0, dependent unconditional: 147, unknown: 61900, unknown conditional: 0, unknown unconditional: 61900] , Statistics on independence cache: Total cache size (in pairs): 380, Positive cache size: 367, Positive conditional cache size: 0, Positive unconditional cache size: 367, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: 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: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 138]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 138]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 138]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 138]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 127]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 127]: 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 5 procedures, 963 locations, 80 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: 66.9s, OverallIterations: 23, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 16.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 42.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2306 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1772 mSDsluCounter, 136 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 221 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3817 IncrementalHoareTripleChecker+Invalid, 4038 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 221 mSolverCounterUnsat, 136 mSDtfsCounter, 3817 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 278 GetRequests, 201 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=332occurred in iteration=16, InterpolantAutomatonStates: 92, 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: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 505 NumberOfCodeBlocks, 479 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 536 ConstructedInterpolants, 0 QuantifiedInterpolants, 1268 SizeOfPredicates, 5 NumberOfNonLiveVariables, 2192 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 39 InterpolantComputations, 18 PerfectInterpolantSequences, 745/841 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 42 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 11:04:46,241 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