./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 BEFORE --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 BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 07:34:37,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:34:37,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:34:37,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:34:37,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:34:37,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:34:37,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:34:37,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:34:37,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:34:37,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:34:37,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:34:37,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:34:37,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:34:37,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:34:37,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:34:37,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:34:37,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:34:37,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:34:37,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:34:37,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:34:37,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:34:37,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:34:37,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:34:37,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:34:37,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:34:37,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:34:37,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:34:37,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:34:37,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:34:37,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:34:37,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:34:37,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:34:37,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:34:37,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:34:37,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:34:37,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:34:37,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:34:37,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:34:37,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:34:37,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:34:37,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:34:37,605 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:34:37,637 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:34:37,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:34:37,639 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:34:37,639 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:34:37,640 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:34:37,640 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:34:37,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:34:37,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:34:37,641 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:34:37,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:34:37,642 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:34:37,642 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:34:37,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:34:37,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:34:37,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:34:37,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:34:37,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:34:37,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:34:37,644 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:34:37,644 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:34:37,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:34:37,645 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:34:37,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:34:37,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:34:37,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:34:37,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:34:37,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:34:37,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:34:37,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:34:37,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:34:37,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:34:37,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:34:37,647 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:34:37,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:34:37,648 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:34:37,648 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:34:37,648 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:34:37,648 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:34:37,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:34:37,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:34:37,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:34:37,991 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:34:37,991 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:34:37,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c [2023-09-01 07:34:39,124 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:34:39,308 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:34:39,309 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c [2023-09-01 07:34:39,315 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f04b02c7c/6a6c1bea741349f39f33c3d4417fb462/FLAGbd199ef64 [2023-09-01 07:34:39,329 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f04b02c7c/6a6c1bea741349f39f33c3d4417fb462 [2023-09-01 07:34:39,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:34:39,332 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:34:39,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:34:39,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:34:39,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:34:39,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:34:39" (1/1) ... [2023-09-01 07:34:39,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11da6602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:34:39, skipping insertion in model container [2023-09-01 07:34:39,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:34:39" (1/1) ... [2023-09-01 07:34:39,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:34:39,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:34:39,593 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] [2023-09-01 07:34:39,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:34:39,620 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:34:39,658 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] [2023-09-01 07:34:39,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:34:39,689 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:34:39,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:34:39 WrapperNode [2023-09-01 07:34:39,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:34:39,691 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:34:39,692 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:34:39,692 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:34:39,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:34:39" (1/1) ... [2023-09-01 07:34:39,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:34:39" (1/1) ... [2023-09-01 07:34:39,760 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 21, calls inlined = 29, statements flattened = 496 [2023-09-01 07:34:39,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:34:39,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:34:39,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:34:39,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:34:39,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:34:39" (1/1) ... [2023-09-01 07:34:39,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:34:39" (1/1) ... [2023-09-01 07:34:39,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:34:39" (1/1) ... [2023-09-01 07:34:39,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:34:39" (1/1) ... [2023-09-01 07:34:39,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:34:39" (1/1) ... [2023-09-01 07:34:39,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:34:39" (1/1) ... [2023-09-01 07:34:39,850 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:34:39" (1/1) ... [2023-09-01 07:34:39,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:34:39" (1/1) ... [2023-09-01 07:34:39,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:34:39,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:34:39,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:34:39,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:34:39,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:34:39" (1/1) ... [2023-09-01 07:34:39,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:34:39,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:34:39,901 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) [2023-09-01 07:34:39,925 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 [2023-09-01 07:34:39,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:34:39,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:34:39,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:34:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:34:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 07:34:39,942 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 07:34:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 07:34:39,942 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 07:34:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:34:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 07:34:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:34:39,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:34:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:34:39,945 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 07:34:40,123 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:34:40,124 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:34:40,818 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:34:40,832 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:34:40,832 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 07:34:40,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:34:40 BoogieIcfgContainer [2023-09-01 07:34:40,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:34:40,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:34:40,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:34:40,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:34:40,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:34:39" (1/3) ... [2023-09-01 07:34:40,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230d93b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:34:40, skipping insertion in model container [2023-09-01 07:34:40,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:34:39" (2/3) ... [2023-09-01 07:34:40,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230d93b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:34:40, skipping insertion in model container [2023-09-01 07:34:40,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:34:40" (3/3) ... [2023-09-01 07:34:40,842 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2023-09-01 07:34:40,848 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:34:40,856 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:34:40,856 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-09-01 07:34:40,856 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:34:41,065 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 07:34:41,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 573 places, 627 transitions, 1270 flow [2023-09-01 07:34:41,378 INFO L130 PetriNetUnfolder]: 61/625 cut-off events. [2023-09-01 07:34:41,379 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 07:34:41,395 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. [2023-09-01 07:34:41,396 INFO L82 GeneralOperation]: Start removeDead. Operand has 573 places, 627 transitions, 1270 flow [2023-09-01 07:34:41,412 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 557 places, 610 transitions, 1232 flow [2023-09-01 07:34:41,415 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:34:41,428 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 557 places, 610 transitions, 1232 flow [2023-09-01 07:34:41,431 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 557 places, 610 transitions, 1232 flow [2023-09-01 07:34:41,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 557 places, 610 transitions, 1232 flow [2023-09-01 07:34:41,561 INFO L130 PetriNetUnfolder]: 60/610 cut-off events. [2023-09-01 07:34:41,561 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 07:34:41,567 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. [2023-09-01 07:34:41,602 INFO L119 LiptonReduction]: Number of co-enabled transitions 105228 [2023-09-01 07:35:23,114 INFO L134 LiptonReduction]: Checked pairs total: 103824 [2023-09-01 07:35:23,114 INFO L136 LiptonReduction]: Total number of compositions: 837 [2023-09-01 07:35:23,126 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 07:35:23,131 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;@40c06be4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:35:23,131 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2023-09-01 07:35:23,133 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 07:35:23,133 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:35:23,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:35:23,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 07:35:23,134 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-09-01 07:35:23,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:35:23,137 INFO L85 PathProgramCache]: Analyzing trace with hash 89996, now seen corresponding path program 1 times [2023-09-01 07:35:23,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:35:23,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053151347] [2023-09-01 07:35:23,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:23,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:35:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:35:23,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:35:23,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053151347] [2023-09-01 07:35:23,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053151347] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:35:23,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:35:23,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:35:23,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642863821] [2023-09-01 07:35:23,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:35:23,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:35:23,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:35:23,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:35:23,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:35:23,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 589 out of 1464 [2023-09-01 07:35:23,454 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) [2023-09-01 07:35:23,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:35:23,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 589 of 1464 [2023-09-01 07:35:23,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:35:24,290 INFO L130 PetriNetUnfolder]: 2393/3901 cut-off events. [2023-09-01 07:35:24,290 INFO L131 PetriNetUnfolder]: For 104/104 co-relation queries the response was YES. [2023-09-01 07:35:24,294 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. [2023-09-01 07:35:24,311 INFO L137 encePairwiseOnDemand]: 1443/1464 looper letters, 103 selfloop transitions, 4 changer transitions 2/109 dead transitions. [2023-09-01 07:35:24,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 109 transitions, 460 flow [2023-09-01 07:35:24,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:35:24,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:35:24,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1906 transitions. [2023-09-01 07:35:24,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43397085610200364 [2023-09-01 07:35:24,333 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1906 transitions. [2023-09-01 07:35:24,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1906 transitions. [2023-09-01 07:35:24,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:35:24,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1906 transitions. [2023-09-01 07:35:24,346 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) [2023-09-01 07:35:24,357 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) [2023-09-01 07:35:24,360 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) [2023-09-01 07:35:24,361 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 152 flow. Second operand 3 states and 1906 transitions. [2023-09-01 07:35:24,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 109 transitions, 460 flow [2023-09-01 07:35:24,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 109 transitions, 444 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 07:35:24,373 INFO L231 Difference]: Finished difference. Result has 57 places, 59 transitions, 151 flow [2023-09-01 07:35:24,374 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} [2023-09-01 07:35:24,378 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -13 predicate places. [2023-09-01 07:35:24,378 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 59 transitions, 151 flow [2023-09-01 07:35:24,379 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) [2023-09-01 07:35:24,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:35:24,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:35:24,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:35:24,381 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-09-01 07:35:24,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:35:24,391 INFO L85 PathProgramCache]: Analyzing trace with hash 2799174, now seen corresponding path program 1 times [2023-09-01 07:35:24,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:35:24,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824808165] [2023-09-01 07:35:24,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:24,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:35:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:24,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:35:24,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:35:24,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824808165] [2023-09-01 07:35:24,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824808165] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:35:24,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445788189] [2023-09-01 07:35:24,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:24,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:35:24,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:35:24,518 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) [2023-09-01 07:35:24,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 07:35:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:24,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:35:24,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:35:24,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:35:24,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:35:24,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:35:24,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445788189] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:35:24,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:35:24,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 07:35:24,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197730947] [2023-09-01 07:35:24,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:35:24,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 07:35:24,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:35:24,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 07:35:24,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:35:24,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 589 out of 1464 [2023-09-01 07:35:24,812 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) [2023-09-01 07:35:24,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:35:24,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 589 of 1464 [2023-09-01 07:35:24,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:35:26,818 INFO L130 PetriNetUnfolder]: 5987/9746 cut-off events. [2023-09-01 07:35:26,819 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-09-01 07:35:26,825 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. [2023-09-01 07:35:26,871 INFO L137 encePairwiseOnDemand]: 1456/1464 looper letters, 245 selfloop transitions, 21 changer transitions 0/266 dead transitions. [2023-09-01 07:35:26,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 266 transitions, 1145 flow [2023-09-01 07:35:26,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:35:26,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:35:26,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4395 transitions. [2023-09-01 07:35:26,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428864168618267 [2023-09-01 07:35:26,883 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4395 transitions. [2023-09-01 07:35:26,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4395 transitions. [2023-09-01 07:35:26,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:35:26,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4395 transitions. [2023-09-01 07:35:26,894 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) [2023-09-01 07:35:26,908 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) [2023-09-01 07:35:26,913 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) [2023-09-01 07:35:26,913 INFO L175 Difference]: Start difference. First operand has 57 places, 59 transitions, 151 flow. Second operand 7 states and 4395 transitions. [2023-09-01 07:35:26,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 266 transitions, 1145 flow [2023-09-01 07:35:26,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 266 transitions, 1131 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:35:26,918 INFO L231 Difference]: Finished difference. Result has 63 places, 74 transitions, 282 flow [2023-09-01 07:35:26,918 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} [2023-09-01 07:35:26,919 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2023-09-01 07:35:26,919 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 74 transitions, 282 flow [2023-09-01 07:35:26,921 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) [2023-09-01 07:35:26,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:35:26,922 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-09-01 07:35:26,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 07:35:27,130 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 [2023-09-01 07:35:27,131 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-09-01 07:35:27,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:35:27,131 INFO L85 PathProgramCache]: Analyzing trace with hash 86780876, now seen corresponding path program 1 times [2023-09-01 07:35:27,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:35:27,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774017597] [2023-09-01 07:35:27,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:27,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:35:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:27,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:35:27,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:35:27,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774017597] [2023-09-01 07:35:27,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774017597] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:35:27,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046106686] [2023-09-01 07:35:27,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:27,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:35:27,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:35:27,235 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) [2023-09-01 07:35:27,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 07:35:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:27,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:35:27,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:35:27,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:35:27,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:35:27,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046106686] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:35:27,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:35:27,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 07:35:27,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371385604] [2023-09-01 07:35:27,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:35:27,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:35:27,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:35:27,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:35:27,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 07:35:27,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 589 out of 1464 [2023-09-01 07:35:27,392 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) [2023-09-01 07:35:27,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:35:27,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 589 of 1464 [2023-09-01 07:35:27,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:35:29,099 INFO L130 PetriNetUnfolder]: 5981/9738 cut-off events. [2023-09-01 07:35:29,099 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2023-09-01 07:35:29,109 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. [2023-09-01 07:35:29,139 INFO L137 encePairwiseOnDemand]: 1458/1464 looper letters, 153 selfloop transitions, 9 changer transitions 0/162 dead transitions. [2023-09-01 07:35:29,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 162 transitions, 750 flow [2023-09-01 07:35:29,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:35:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:35:29,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3105 transitions. [2023-09-01 07:35:29,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42418032786885246 [2023-09-01 07:35:29,148 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3105 transitions. [2023-09-01 07:35:29,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3105 transitions. [2023-09-01 07:35:29,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:35:29,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3105 transitions. [2023-09-01 07:35:29,156 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) [2023-09-01 07:35:29,167 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) [2023-09-01 07:35:29,169 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) [2023-09-01 07:35:29,169 INFO L175 Difference]: Start difference. First operand has 63 places, 74 transitions, 282 flow. Second operand 5 states and 3105 transitions. [2023-09-01 07:35:29,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 162 transitions, 750 flow [2023-09-01 07:35:29,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 162 transitions, 731 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 07:35:29,179 INFO L231 Difference]: Finished difference. Result has 63 places, 66 transitions, 227 flow [2023-09-01 07:35:29,179 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} [2023-09-01 07:35:29,180 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2023-09-01 07:35:29,181 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 66 transitions, 227 flow [2023-09-01 07:35:29,182 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) [2023-09-01 07:35:29,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:35:29,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 07:35:29,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 07:35:29,391 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 [2023-09-01 07:35:29,391 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-09-01 07:35:29,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:35:29,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1603500468, now seen corresponding path program 1 times [2023-09-01 07:35:29,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:35:29,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242967681] [2023-09-01 07:35:29,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:29,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:35:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:29,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:35:29,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:35:29,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242967681] [2023-09-01 07:35:29,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242967681] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:35:29,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:35:29,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:35:29,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031888030] [2023-09-01 07:35:29,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:35:29,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:35:29,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:35:29,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:35:29,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:35:29,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 587 out of 1464 [2023-09-01 07:35:29,491 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) [2023-09-01 07:35:29,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:35:29,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 587 of 1464 [2023-09-01 07:35:29,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:35:30,543 INFO L130 PetriNetUnfolder]: 4785/7793 cut-off events. [2023-09-01 07:35:30,543 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-09-01 07:35:30,551 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. [2023-09-01 07:35:30,577 INFO L137 encePairwiseOnDemand]: 1459/1464 looper letters, 58 selfloop transitions, 7 changer transitions 0/65 dead transitions. [2023-09-01 07:35:30,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 65 transitions, 353 flow [2023-09-01 07:35:30,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:35:30,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:35:30,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1819 transitions. [2023-09-01 07:35:30,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41416211293260474 [2023-09-01 07:35:30,583 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1819 transitions. [2023-09-01 07:35:30,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1819 transitions. [2023-09-01 07:35:30,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:35:30,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1819 transitions. [2023-09-01 07:35:30,588 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) [2023-09-01 07:35:30,594 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) [2023-09-01 07:35:30,595 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) [2023-09-01 07:35:30,596 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 227 flow. Second operand 3 states and 1819 transitions. [2023-09-01 07:35:30,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 65 transitions, 353 flow [2023-09-01 07:35:30,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 65 transitions, 340 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 07:35:30,598 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 233 flow [2023-09-01 07:35:30,598 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} [2023-09-01 07:35:30,599 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2023-09-01 07:35:30,599 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 233 flow [2023-09-01 07:35:30,600 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) [2023-09-01 07:35:30,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:35:30,600 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 07:35:30,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 07:35:30,601 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-09-01 07:35:30,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:35:30,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1792338020, now seen corresponding path program 2 times [2023-09-01 07:35:30,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:35:30,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007849005] [2023-09-01 07:35:30,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:30,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:35:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:30,667 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:35:30,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:35:30,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007849005] [2023-09-01 07:35:30,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007849005] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:35:30,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177183465] [2023-09-01 07:35:30,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:35:30,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:35:30,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:35:30,670 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) [2023-09-01 07:35:30,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 07:35:30,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:35:30,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:35:30,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:35:30,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:35:30,825 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:35:30,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:35:30,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177183465] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:35:30,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:35:30,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 07:35:30,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489503041] [2023-09-01 07:35:30,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:35:30,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:35:30,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:35:30,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:35:30,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:35:30,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 591 out of 1464 [2023-09-01 07:35:30,847 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) [2023-09-01 07:35:30,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:35:30,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 591 of 1464 [2023-09-01 07:35:30,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:35:31,867 INFO L130 PetriNetUnfolder]: 4785/7791 cut-off events. [2023-09-01 07:35:31,867 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2023-09-01 07:35:31,875 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. [2023-09-01 07:35:31,898 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 62 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2023-09-01 07:35:31,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 339 flow [2023-09-01 07:35:31,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:35:31,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:35:31,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1827 transitions. [2023-09-01 07:35:31,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41598360655737704 [2023-09-01 07:35:31,904 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1827 transitions. [2023-09-01 07:35:31,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1827 transitions. [2023-09-01 07:35:31,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:35:31,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1827 transitions. [2023-09-01 07:35:31,908 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) [2023-09-01 07:35:31,913 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) [2023-09-01 07:35:31,914 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) [2023-09-01 07:35:31,914 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 233 flow. Second operand 3 states and 1827 transitions. [2023-09-01 07:35:31,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 339 flow [2023-09-01 07:35:31,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 299 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-09-01 07:35:31,916 INFO L231 Difference]: Finished difference. Result has 57 places, 63 transitions, 175 flow [2023-09-01 07:35:31,917 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} [2023-09-01 07:35:31,917 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -13 predicate places. [2023-09-01 07:35:31,918 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 63 transitions, 175 flow [2023-09-01 07:35:31,918 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) [2023-09-01 07:35:31,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:35:31,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:35:31,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-09-01 07:35:32,125 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 [2023-09-01 07:35:32,126 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-09-01 07:35:32,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:35:32,126 INFO L85 PathProgramCache]: Analyzing trace with hash -232736656, now seen corresponding path program 1 times [2023-09-01 07:35:32,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:35:32,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71321118] [2023-09-01 07:35:32,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:32,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:35:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:32,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:35:32,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:35:32,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71321118] [2023-09-01 07:35:32,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71321118] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:35:32,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:35:32,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:35:32,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121599353] [2023-09-01 07:35:32,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:35:32,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:35:32,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:35:32,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:35:32,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:35:32,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 593 out of 1464 [2023-09-01 07:35:32,223 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) [2023-09-01 07:35:32,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:35:32,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 593 of 1464 [2023-09-01 07:35:32,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:35:33,060 INFO L130 PetriNetUnfolder]: 4301/6995 cut-off events. [2023-09-01 07:35:33,060 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-09-01 07:35:33,064 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. [2023-09-01 07:35:33,081 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 60 selfloop transitions, 1 changer transitions 0/61 dead transitions. [2023-09-01 07:35:33,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 61 transitions, 293 flow [2023-09-01 07:35:33,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:35:33,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:35:33,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1831 transitions. [2023-09-01 07:35:33,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4168943533697632 [2023-09-01 07:35:33,088 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1831 transitions. [2023-09-01 07:35:33,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1831 transitions. [2023-09-01 07:35:33,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:35:33,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1831 transitions. [2023-09-01 07:35:33,091 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) [2023-09-01 07:35:33,097 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) [2023-09-01 07:35:33,098 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) [2023-09-01 07:35:33,098 INFO L175 Difference]: Start difference. First operand has 57 places, 63 transitions, 175 flow. Second operand 3 states and 1831 transitions. [2023-09-01 07:35:33,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 61 transitions, 293 flow [2023-09-01 07:35:33,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 61 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:35:33,100 INFO L231 Difference]: Finished difference. Result has 56 places, 61 transitions, 172 flow [2023-09-01 07:35:33,100 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} [2023-09-01 07:35:33,103 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -14 predicate places. [2023-09-01 07:35:33,103 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 61 transitions, 172 flow [2023-09-01 07:35:33,104 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) [2023-09-01 07:35:33,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:35:33,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:35:33,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 07:35:33,104 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-09-01 07:35:33,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:35:33,105 INFO L85 PathProgramCache]: Analyzing trace with hash -232736595, now seen corresponding path program 1 times [2023-09-01 07:35:33,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:35:33,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789903967] [2023-09-01 07:35:33,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:33,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:35:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:33,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:35:33,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:35:33,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789903967] [2023-09-01 07:35:33,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789903967] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:35:33,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409298479] [2023-09-01 07:35:33,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:33,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:35:33,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:35:33,186 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) [2023-09-01 07:35:33,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 07:35:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:33,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:35:33,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:35:33,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:35:33,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:35:33,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:35:33,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409298479] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:35:33,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:35:33,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-09-01 07:35:33,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878996650] [2023-09-01 07:35:33,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:35:33,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 07:35:33,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:35:33,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 07:35:33,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:35:33,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 583 out of 1464 [2023-09-01 07:35:33,450 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) [2023-09-01 07:35:33,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:35:33,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 583 of 1464 [2023-09-01 07:35:33,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:35:33,735 INFO L130 PetriNetUnfolder]: 1076/1757 cut-off events. [2023-09-01 07:35:33,735 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-09-01 07:35:33,737 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. [2023-09-01 07:35:33,741 INFO L137 encePairwiseOnDemand]: 1459/1464 looper letters, 48 selfloop transitions, 10 changer transitions 0/58 dead transitions. [2023-09-01 07:35:33,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 58 transitions, 271 flow [2023-09-01 07:35:33,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:35:33,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:35:33,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3562 transitions. [2023-09-01 07:35:33,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40551001821493626 [2023-09-01 07:35:33,753 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3562 transitions. [2023-09-01 07:35:33,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3562 transitions. [2023-09-01 07:35:33,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:35:33,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3562 transitions. [2023-09-01 07:35:33,761 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) [2023-09-01 07:35:33,770 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) [2023-09-01 07:35:33,771 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) [2023-09-01 07:35:33,771 INFO L175 Difference]: Start difference. First operand has 56 places, 61 transitions, 172 flow. Second operand 6 states and 3562 transitions. [2023-09-01 07:35:33,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 58 transitions, 271 flow [2023-09-01 07:35:33,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 58 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:35:33,773 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 192 flow [2023-09-01 07:35:33,774 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} [2023-09-01 07:35:33,774 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2023-09-01 07:35:33,775 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 192 flow [2023-09-01 07:35:33,776 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) [2023-09-01 07:35:33,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:35:33,776 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2023-09-01 07:35:33,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 07:35:33,993 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 [2023-09-01 07:35:33,993 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-09-01 07:35:33,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:35:33,993 INFO L85 PathProgramCache]: Analyzing trace with hash 443889036, now seen corresponding path program 2 times [2023-09-01 07:35:33,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:35:33,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274940322] [2023-09-01 07:35:33,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:33,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:35:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:34,108 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:35:34,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:35:34,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274940322] [2023-09-01 07:35:34,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274940322] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:35:34,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753149615] [2023-09-01 07:35:34,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:35:34,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:35:34,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:35:34,113 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) [2023-09-01 07:35:34,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 07:35:34,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:35:34,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:35:34,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:35:34,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:35:34,285 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-09-01 07:35:34,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:35:34,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753149615] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:35:34,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:35:34,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-09-01 07:35:34,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390407083] [2023-09-01 07:35:34,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:35:34,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:35:34,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:35:34,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:35:34,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:35:34,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 593 out of 1464 [2023-09-01 07:35:34,297 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) [2023-09-01 07:35:34,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:35:34,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 593 of 1464 [2023-09-01 07:35:34,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:35:34,581 INFO L130 PetriNetUnfolder]: 961/1568 cut-off events. [2023-09-01 07:35:34,582 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-09-01 07:35:34,584 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. [2023-09-01 07:35:34,588 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 55 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-09-01 07:35:34,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 56 transitions, 300 flow [2023-09-01 07:35:34,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:35:34,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:35:34,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1829 transitions. [2023-09-01 07:35:34,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41643897996357016 [2023-09-01 07:35:34,594 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1829 transitions. [2023-09-01 07:35:34,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1829 transitions. [2023-09-01 07:35:34,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:35:34,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1829 transitions. [2023-09-01 07:35:34,597 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) [2023-09-01 07:35:34,603 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) [2023-09-01 07:35:34,604 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) [2023-09-01 07:35:34,604 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 192 flow. Second operand 3 states and 1829 transitions. [2023-09-01 07:35:34,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 56 transitions, 300 flow [2023-09-01 07:35:34,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 280 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 07:35:34,607 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 170 flow [2023-09-01 07:35:34,607 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} [2023-09-01 07:35:34,609 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -12 predicate places. [2023-09-01 07:35:34,610 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 170 flow [2023-09-01 07:35:34,610 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) [2023-09-01 07:35:34,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:35:34,611 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2023-09-01 07:35:34,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 07:35:34,818 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 [2023-09-01 07:35:34,819 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-09-01 07:35:34,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:35:34,819 INFO L85 PathProgramCache]: Analyzing trace with hash 443889035, now seen corresponding path program 1 times [2023-09-01 07:35:34,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:35:34,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678570789] [2023-09-01 07:35:34,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:34,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:35:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:34,954 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:35:34,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:35:34,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678570789] [2023-09-01 07:35:34,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678570789] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:35:34,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252713318] [2023-09-01 07:35:34,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:34,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:35:34,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:35:34,956 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) [2023-09-01 07:35:34,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 07:35:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:35,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 07:35:35,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:35:35,188 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:35:35,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:35:35,223 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:35:35,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252713318] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:35:35,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:35:35,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-09-01 07:35:35,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101067297] [2023-09-01 07:35:35,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:35:35,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 07:35:35,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:35:35,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 07:35:35,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-09-01 07:35:35,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 583 out of 1464 [2023-09-01 07:35:35,335 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) [2023-09-01 07:35:35,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:35:35,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 583 of 1464 [2023-09-01 07:35:35,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:35:35,769 INFO L130 PetriNetUnfolder]: 961/1570 cut-off events. [2023-09-01 07:35:35,770 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-09-01 07:35:35,771 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. [2023-09-01 07:35:35,775 INFO L137 encePairwiseOnDemand]: 1459/1464 looper letters, 46 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2023-09-01 07:35:35,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 58 transitions, 294 flow [2023-09-01 07:35:35,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:35:35,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:35:35,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4141 transitions. [2023-09-01 07:35:35,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4040788446526151 [2023-09-01 07:35:35,788 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4141 transitions. [2023-09-01 07:35:35,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4141 transitions. [2023-09-01 07:35:35,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:35:35,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4141 transitions. [2023-09-01 07:35:35,798 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) [2023-09-01 07:35:35,809 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) [2023-09-01 07:35:35,811 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) [2023-09-01 07:35:35,811 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 170 flow. Second operand 7 states and 4141 transitions. [2023-09-01 07:35:35,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 58 transitions, 294 flow [2023-09-01 07:35:35,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 58 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:35:35,813 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 211 flow [2023-09-01 07:35:35,813 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} [2023-09-01 07:35:35,814 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -6 predicate places. [2023-09-01 07:35:35,814 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 211 flow [2023-09-01 07:35:35,816 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) [2023-09-01 07:35:35,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:35:35,816 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2023-09-01 07:35:35,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 07:35:36,022 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 [2023-09-01 07:35:36,023 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-09-01 07:35:36,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:35:36,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1858375828, now seen corresponding path program 2 times [2023-09-01 07:35:36,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:35:36,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227353322] [2023-09-01 07:35:36,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:36,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:35:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:36,130 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 07:35:36,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:35:36,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227353322] [2023-09-01 07:35:36,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227353322] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:35:36,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:35:36,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:35:36,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306275302] [2023-09-01 07:35:36,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:35:36,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:35:36,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:35:36,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:35:36,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:35:36,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 593 out of 1464 [2023-09-01 07:35:36,140 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) [2023-09-01 07:35:36,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:35:36,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 593 of 1464 [2023-09-01 07:35:36,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:35:36,346 INFO L130 PetriNetUnfolder]: 852/1391 cut-off events. [2023-09-01 07:35:36,346 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-09-01 07:35:36,348 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. [2023-09-01 07:35:36,350 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 55 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-09-01 07:35:36,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 56 transitions, 319 flow [2023-09-01 07:35:36,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:35:36,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:35:36,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1827 transitions. [2023-09-01 07:35:36,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41598360655737704 [2023-09-01 07:35:36,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1827 transitions. [2023-09-01 07:35:36,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1827 transitions. [2023-09-01 07:35:36,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:35:36,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1827 transitions. [2023-09-01 07:35:36,361 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) [2023-09-01 07:35:36,365 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) [2023-09-01 07:35:36,366 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) [2023-09-01 07:35:36,366 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 211 flow. Second operand 3 states and 1827 transitions. [2023-09-01 07:35:36,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 56 transitions, 319 flow [2023-09-01 07:35:36,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 299 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-09-01 07:35:36,368 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 189 flow [2023-09-01 07:35:36,368 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} [2023-09-01 07:35:36,369 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -10 predicate places. [2023-09-01 07:35:36,369 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 189 flow [2023-09-01 07:35:36,369 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) [2023-09-01 07:35:36,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:35:36,370 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2023-09-01 07:35:36,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 07:35:36,370 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-09-01 07:35:36,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:35:36,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1858375829, now seen corresponding path program 1 times [2023-09-01 07:35:36,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:35:36,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434653071] [2023-09-01 07:35:36,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:36,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:35:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:36,426 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 07:35:36,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:35:36,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434653071] [2023-09-01 07:35:36,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434653071] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:35:36,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:35:36,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:35:36,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803513120] [2023-09-01 07:35:36,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:35:36,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:35:36,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:35:36,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:35:36,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:35:36,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 593 out of 1464 [2023-09-01 07:35:36,436 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) [2023-09-01 07:35:36,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:35:36,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 593 of 1464 [2023-09-01 07:35:36,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:35:36,681 INFO L130 PetriNetUnfolder]: 749/1222 cut-off events. [2023-09-01 07:35:36,681 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 07:35:36,683 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. [2023-09-01 07:35:36,686 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 53 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2023-09-01 07:35:36,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 54 transitions, 293 flow [2023-09-01 07:35:36,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:35:36,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:35:36,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1825 transitions. [2023-09-01 07:35:36,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415528233151184 [2023-09-01 07:35:36,692 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1825 transitions. [2023-09-01 07:35:36,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1825 transitions. [2023-09-01 07:35:36,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:35:36,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1825 transitions. [2023-09-01 07:35:36,697 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) [2023-09-01 07:35:36,701 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) [2023-09-01 07:35:36,701 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) [2023-09-01 07:35:36,701 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 189 flow. Second operand 3 states and 1825 transitions. [2023-09-01 07:35:36,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 54 transitions, 293 flow [2023-09-01 07:35:36,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 54 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:35:36,703 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 186 flow [2023-09-01 07:35:36,704 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} [2023-09-01 07:35:36,704 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -11 predicate places. [2023-09-01 07:35:36,704 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 186 flow [2023-09-01 07:35:36,704 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) [2023-09-01 07:35:36,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:35:36,705 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2023-09-01 07:35:36,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 07:35:36,705 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-09-01 07:35:36,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:35:36,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1775075069, now seen corresponding path program 1 times [2023-09-01 07:35:36,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:35:36,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125769935] [2023-09-01 07:35:36,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:36,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:35:36,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:36,775 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 07:35:36,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:35:36,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125769935] [2023-09-01 07:35:36,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125769935] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:35:36,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:35:36,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:35:36,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753735890] [2023-09-01 07:35:36,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:35:36,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:35:36,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:35:36,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:35:36,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:35:36,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 593 out of 1464 [2023-09-01 07:35:36,784 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) [2023-09-01 07:35:36,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:35:36,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 593 of 1464 [2023-09-01 07:35:36,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:35:37,005 INFO L130 PetriNetUnfolder]: 652/1063 cut-off events. [2023-09-01 07:35:37,005 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-09-01 07:35:37,007 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. [2023-09-01 07:35:37,010 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 51 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2023-09-01 07:35:37,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 52 transitions, 286 flow [2023-09-01 07:35:37,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:35:37,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:35:37,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1823 transitions. [2023-09-01 07:35:37,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4150728597449909 [2023-09-01 07:35:37,015 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1823 transitions. [2023-09-01 07:35:37,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1823 transitions. [2023-09-01 07:35:37,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:35:37,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1823 transitions. [2023-09-01 07:35:37,019 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) [2023-09-01 07:35:37,023 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) [2023-09-01 07:35:37,023 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) [2023-09-01 07:35:37,024 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 186 flow. Second operand 3 states and 1823 transitions. [2023-09-01 07:35:37,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 52 transitions, 286 flow [2023-09-01 07:35:37,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 52 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:35:37,025 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 183 flow [2023-09-01 07:35:37,026 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} [2023-09-01 07:35:37,027 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -12 predicate places. [2023-09-01 07:35:37,027 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 183 flow [2023-09-01 07:35:37,027 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) [2023-09-01 07:35:37,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:35:37,029 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2023-09-01 07:35:37,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 07:35:37,029 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-09-01 07:35:37,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:35:37,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1775075023, now seen corresponding path program 1 times [2023-09-01 07:35:37,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:35:37,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484638832] [2023-09-01 07:35:37,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:37,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:35:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:37,106 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 07:35:37,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:35:37,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484638832] [2023-09-01 07:35:37,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484638832] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:35:37,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:35:37,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:35:37,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289098130] [2023-09-01 07:35:37,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:35:37,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:35:37,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:35:37,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:35:37,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:35:37,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 587 out of 1464 [2023-09-01 07:35:37,140 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) [2023-09-01 07:35:37,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:35:37,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 587 of 1464 [2023-09-01 07:35:37,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:35:37,449 INFO L130 PetriNetUnfolder]: 971/1580 cut-off events. [2023-09-01 07:35:37,449 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-09-01 07:35:37,452 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. [2023-09-01 07:35:37,455 INFO L137 encePairwiseOnDemand]: 1453/1464 looper letters, 75 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-09-01 07:35:37,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 77 transitions, 389 flow [2023-09-01 07:35:37,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:35:37,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:35:37,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1837 transitions. [2023-09-01 07:35:37,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41826047358834245 [2023-09-01 07:35:37,460 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1837 transitions. [2023-09-01 07:35:37,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1837 transitions. [2023-09-01 07:35:37,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:35:37,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1837 transitions. [2023-09-01 07:35:37,463 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) [2023-09-01 07:35:37,468 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) [2023-09-01 07:35:37,468 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) [2023-09-01 07:35:37,468 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 183 flow. Second operand 3 states and 1837 transitions. [2023-09-01 07:35:37,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 77 transitions, 389 flow [2023-09-01 07:35:37,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 77 transitions, 388 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:35:37,470 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 210 flow [2023-09-01 07:35:37,471 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} [2023-09-01 07:35:37,471 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -10 predicate places. [2023-09-01 07:35:37,471 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 210 flow [2023-09-01 07:35:37,472 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) [2023-09-01 07:35:37,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:35:37,472 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:35:37,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 07:35:37,472 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-09-01 07:35:37,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:35:37,473 INFO L85 PathProgramCache]: Analyzing trace with hash -751514120, now seen corresponding path program 1 times [2023-09-01 07:35:37,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:35:37,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134360915] [2023-09-01 07:35:37,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:37,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:35:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:37,548 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 07:35:37,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:35:37,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134360915] [2023-09-01 07:35:37,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134360915] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:35:37,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:35:37,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:35:37,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325310481] [2023-09-01 07:35:37,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:35:37,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:35:37,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:35:37,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:35:37,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:35:37,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 587 out of 1464 [2023-09-01 07:35:37,583 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) [2023-09-01 07:35:37,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:35:37,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 587 of 1464 [2023-09-01 07:35:37,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:35:38,006 INFO L130 PetriNetUnfolder]: 1159/1888 cut-off events. [2023-09-01 07:35:38,006 INFO L131 PetriNetUnfolder]: For 115/115 co-relation queries the response was YES. [2023-09-01 07:35:38,009 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. [2023-09-01 07:35:38,014 INFO L137 encePairwiseOnDemand]: 1456/1464 looper letters, 78 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2023-09-01 07:35:38,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 80 transitions, 451 flow [2023-09-01 07:35:38,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:35:38,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:35:38,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1835 transitions. [2023-09-01 07:35:38,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41780510018214934 [2023-09-01 07:35:38,019 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1835 transitions. [2023-09-01 07:35:38,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1835 transitions. [2023-09-01 07:35:38,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:35:38,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1835 transitions. [2023-09-01 07:35:38,023 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) [2023-09-01 07:35:38,027 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) [2023-09-01 07:35:38,028 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) [2023-09-01 07:35:38,028 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 210 flow. Second operand 3 states and 1835 transitions. [2023-09-01 07:35:38,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 80 transitions, 451 flow [2023-09-01 07:35:38,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 80 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:35:38,031 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 230 flow [2023-09-01 07:35:38,031 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} [2023-09-01 07:35:38,031 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -8 predicate places. [2023-09-01 07:35:38,032 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 230 flow [2023-09-01 07:35:38,032 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) [2023-09-01 07:35:38,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:35:38,032 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:35:38,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 07:35:38,033 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-09-01 07:35:38,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:35:38,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1822098570, now seen corresponding path program 1 times [2023-09-01 07:35:38,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:35:38,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43102667] [2023-09-01 07:35:38,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:38,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:35:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:38,120 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-09-01 07:35:38,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:35:38,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43102667] [2023-09-01 07:35:38,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43102667] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:35:38,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:35:38,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:35:38,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879126648] [2023-09-01 07:35:38,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:35:38,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:35:38,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:35:38,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:35:38,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:35:38,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 593 out of 1464 [2023-09-01 07:35:38,131 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) [2023-09-01 07:35:38,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:35:38,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 593 of 1464 [2023-09-01 07:35:38,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:35:38,543 INFO L130 PetriNetUnfolder]: 1031/1678 cut-off events. [2023-09-01 07:35:38,543 INFO L131 PetriNetUnfolder]: For 311/311 co-relation queries the response was YES. [2023-09-01 07:35:38,546 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. [2023-09-01 07:35:38,550 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 51 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2023-09-01 07:35:38,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 52 transitions, 326 flow [2023-09-01 07:35:38,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:35:38,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:35:38,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1821 transitions. [2023-09-01 07:35:38,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146174863387978 [2023-09-01 07:35:38,554 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1821 transitions. [2023-09-01 07:35:38,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1821 transitions. [2023-09-01 07:35:38,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:35:38,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1821 transitions. [2023-09-01 07:35:38,557 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) [2023-09-01 07:35:38,562 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) [2023-09-01 07:35:38,562 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) [2023-09-01 07:35:38,562 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 230 flow. Second operand 3 states and 1821 transitions. [2023-09-01 07:35:38,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 52 transitions, 326 flow [2023-09-01 07:35:38,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 52 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:35:38,565 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 222 flow [2023-09-01 07:35:38,565 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} [2023-09-01 07:35:38,566 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -9 predicate places. [2023-09-01 07:35:38,566 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 222 flow [2023-09-01 07:35:38,566 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) [2023-09-01 07:35:38,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:35:38,567 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:35:38,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 07:35:38,567 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-09-01 07:35:38,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:35:38,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1822098483, now seen corresponding path program 1 times [2023-09-01 07:35:38,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:35:38,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637212321] [2023-09-01 07:35:38,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:38,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:35:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:38,694 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 07:35:38,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:35:38,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637212321] [2023-09-01 07:35:38,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637212321] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:35:38,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14217975] [2023-09-01 07:35:38,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:38,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:35:38,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:35:38,697 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) [2023-09-01 07:35:38,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 07:35:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:38,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 07:35:38,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:35:38,888 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 07:35:38,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:35:38,983 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 07:35:38,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14217975] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:35:38,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:35:38,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 07:35:38,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749015904] [2023-09-01 07:35:38,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:35:38,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 07:35:38,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:35:38,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 07:35:38,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:35:39,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 587 out of 1464 [2023-09-01 07:35:39,071 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) [2023-09-01 07:35:39,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:35:39,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 587 of 1464 [2023-09-01 07:35:39,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:35:39,832 INFO L130 PetriNetUnfolder]: 2099/3094 cut-off events. [2023-09-01 07:35:39,832 INFO L131 PetriNetUnfolder]: For 290/290 co-relation queries the response was YES. [2023-09-01 07:35:39,838 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. [2023-09-01 07:35:39,846 INFO L137 encePairwiseOnDemand]: 1457/1464 looper letters, 171 selfloop transitions, 17 changer transitions 0/188 dead transitions. [2023-09-01 07:35:39,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 188 transitions, 1009 flow [2023-09-01 07:35:39,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:35:39,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:35:39,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4287 transitions. [2023-09-01 07:35:39,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4183255269320843 [2023-09-01 07:35:39,854 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4287 transitions. [2023-09-01 07:35:39,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4287 transitions. [2023-09-01 07:35:39,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:35:39,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4287 transitions. [2023-09-01 07:35:39,859 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) [2023-09-01 07:35:39,867 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) [2023-09-01 07:35:39,868 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) [2023-09-01 07:35:39,868 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 222 flow. Second operand 7 states and 4287 transitions. [2023-09-01 07:35:39,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 188 transitions, 1009 flow [2023-09-01 07:35:39,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 188 transitions, 1008 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:35:39,873 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 332 flow [2023-09-01 07:35:39,873 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} [2023-09-01 07:35:39,873 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -1 predicate places. [2023-09-01 07:35:39,873 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 332 flow [2023-09-01 07:35:39,874 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) [2023-09-01 07:35:39,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:35:39,874 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:35:39,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 07:35:40,081 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 [2023-09-01 07:35:40,081 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-09-01 07:35:40,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:35:40,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1822098487, now seen corresponding path program 1 times [2023-09-01 07:35:40,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:35:40,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110022303] [2023-09-01 07:35:40,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:40,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:35:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:40,187 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 07:35:40,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:35:40,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110022303] [2023-09-01 07:35:40,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110022303] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:35:40,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:35:40,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:35:40,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81304627] [2023-09-01 07:35:40,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:35:40,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:35:40,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:35:40,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:35:40,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:35:40,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 587 out of 1464 [2023-09-01 07:35:40,219 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) [2023-09-01 07:35:40,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:35:40,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 587 of 1464 [2023-09-01 07:35:40,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:35:40,779 INFO L130 PetriNetUnfolder]: 1569/2448 cut-off events. [2023-09-01 07:35:40,779 INFO L131 PetriNetUnfolder]: For 1898/1898 co-relation queries the response was YES. [2023-09-01 07:35:40,784 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. [2023-09-01 07:35:40,789 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 55 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-09-01 07:35:40,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 56 transitions, 390 flow [2023-09-01 07:35:40,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:35:40,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:35:40,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1801 transitions. [2023-09-01 07:35:40,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41006375227686703 [2023-09-01 07:35:40,792 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1801 transitions. [2023-09-01 07:35:40,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1801 transitions. [2023-09-01 07:35:40,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:35:40,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1801 transitions. [2023-09-01 07:35:40,794 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) [2023-09-01 07:35:40,797 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) [2023-09-01 07:35:40,797 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) [2023-09-01 07:35:40,797 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 332 flow. Second operand 3 states and 1801 transitions. [2023-09-01 07:35:40,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 56 transitions, 390 flow [2023-09-01 07:35:40,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 56 transitions, 376 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 07:35:40,801 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 266 flow [2023-09-01 07:35:40,801 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} [2023-09-01 07:35:40,802 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -2 predicate places. [2023-09-01 07:35:40,802 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 266 flow [2023-09-01 07:35:40,802 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) [2023-09-01 07:35:40,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:35:40,802 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:35:40,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 07:35:40,803 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-09-01 07:35:40,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:35:40,803 INFO L85 PathProgramCache]: Analyzing trace with hash -650475523, now seen corresponding path program 1 times [2023-09-01 07:35:40,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:35:40,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538688991] [2023-09-01 07:35:40,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:40,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:35:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:40,941 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 07:35:40,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:35:40,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538688991] [2023-09-01 07:35:40,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538688991] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:35:40,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816011894] [2023-09-01 07:35:40,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:40,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:35:40,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:35:40,943 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) [2023-09-01 07:35:40,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 07:35:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:41,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:35:41,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:35:41,182 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 07:35:41,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:35:41,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816011894] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:35:41,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:35:41,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-09-01 07:35:41,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835276652] [2023-09-01 07:35:41,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:35:41,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:35:41,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:35:41,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:35:41,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 07:35:41,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 587 out of 1464 [2023-09-01 07:35:41,242 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) [2023-09-01 07:35:41,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:35:41,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 587 of 1464 [2023-09-01 07:35:41,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:35:41,808 INFO L130 PetriNetUnfolder]: 1337/2216 cut-off events. [2023-09-01 07:35:41,808 INFO L131 PetriNetUnfolder]: For 524/524 co-relation queries the response was YES. [2023-09-01 07:35:41,812 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. [2023-09-01 07:35:41,817 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 123 selfloop transitions, 3 changer transitions 0/126 dead transitions. [2023-09-01 07:35:41,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 126 transitions, 714 flow [2023-09-01 07:35:41,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:35:41,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:35:41,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3047 transitions. [2023-09-01 07:35:41,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4162568306010929 [2023-09-01 07:35:41,822 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3047 transitions. [2023-09-01 07:35:41,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3047 transitions. [2023-09-01 07:35:41,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:35:41,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3047 transitions. [2023-09-01 07:35:41,826 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) [2023-09-01 07:35:41,831 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) [2023-09-01 07:35:41,832 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) [2023-09-01 07:35:41,832 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 266 flow. Second operand 5 states and 3047 transitions. [2023-09-01 07:35:41,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 126 transitions, 714 flow [2023-09-01 07:35:41,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 126 transitions, 713 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:35:41,838 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 250 flow [2023-09-01 07:35:41,839 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} [2023-09-01 07:35:41,839 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -1 predicate places. [2023-09-01 07:35:41,839 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 250 flow [2023-09-01 07:35:41,840 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) [2023-09-01 07:35:41,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:35:41,840 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:35:41,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 07:35:42,047 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 [2023-09-01 07:35:42,047 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-09-01 07:35:42,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:35:42,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1958361601, now seen corresponding path program 1 times [2023-09-01 07:35:42,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:35:42,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635792012] [2023-09-01 07:35:42,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:42,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:35:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:42,224 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-09-01 07:35:42,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:35:42,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635792012] [2023-09-01 07:35:42,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635792012] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:35:42,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:35:42,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:35:42,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042768476] [2023-09-01 07:35:42,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:35:42,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:35:42,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:35:42,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:35:42,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:35:42,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 593 out of 1464 [2023-09-01 07:35:42,233 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) [2023-09-01 07:35:42,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:35:42,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 593 of 1464 [2023-09-01 07:35:42,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:35:42,591 INFO L130 PetriNetUnfolder]: 1205/1998 cut-off events. [2023-09-01 07:35:42,592 INFO L131 PetriNetUnfolder]: For 1591/1591 co-relation queries the response was YES. [2023-09-01 07:35:42,620 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. [2023-09-01 07:35:42,623 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 49 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2023-09-01 07:35:42,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 50 transitions, 336 flow [2023-09-01 07:35:42,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:35:42,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:35:42,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1816 transitions. [2023-09-01 07:35:42,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4134790528233151 [2023-09-01 07:35:42,627 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1816 transitions. [2023-09-01 07:35:42,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1816 transitions. [2023-09-01 07:35:42,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:35:42,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1816 transitions. [2023-09-01 07:35:42,630 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) [2023-09-01 07:35:42,633 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) [2023-09-01 07:35:42,633 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) [2023-09-01 07:35:42,634 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 250 flow. Second operand 3 states and 1816 transitions. [2023-09-01 07:35:42,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 50 transitions, 336 flow [2023-09-01 07:35:42,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 50 transitions, 331 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 07:35:42,637 INFO L231 Difference]: Finished difference. Result has 66 places, 50 transitions, 233 flow [2023-09-01 07:35:42,637 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} [2023-09-01 07:35:42,638 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -4 predicate places. [2023-09-01 07:35:42,638 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 50 transitions, 233 flow [2023-09-01 07:35:42,638 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) [2023-09-01 07:35:42,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:35:42,638 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:35:42,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-09-01 07:35:42,639 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-09-01 07:35:42,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:35:42,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1958361660, now seen corresponding path program 2 times [2023-09-01 07:35:42,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:35:42,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443093827] [2023-09-01 07:35:42,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:42,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:35:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:43,003 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 07:35:43,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:35:43,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443093827] [2023-09-01 07:35:43,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443093827] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:35:43,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430366617] [2023-09-01 07:35:43,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:35:43,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:35:43,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:35:43,005 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) [2023-09-01 07:35:43,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 07:35:43,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:35:43,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:35:43,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 07:35:43,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:35:43,240 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-09-01 07:35:43,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:35:43,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430366617] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:35:43,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:35:43,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-09-01 07:35:43,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962912257] [2023-09-01 07:35:43,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:35:43,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:35:43,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:35:43,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:35:43,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:35:43,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 593 out of 1464 [2023-09-01 07:35:43,250 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) [2023-09-01 07:35:43,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:35:43,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 593 of 1464 [2023-09-01 07:35:43,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:35:43,619 INFO L130 PetriNetUnfolder]: 1079/1790 cut-off events. [2023-09-01 07:35:43,619 INFO L131 PetriNetUnfolder]: For 1083/1083 co-relation queries the response was YES. [2023-09-01 07:35:43,623 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. [2023-09-01 07:35:43,626 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 43 selfloop transitions, 1 changer transitions 4/48 dead transitions. [2023-09-01 07:35:43,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 48 transitions, 315 flow [2023-09-01 07:35:43,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:35:43,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:35:43,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1814 transitions. [2023-09-01 07:35:43,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41302367941712204 [2023-09-01 07:35:43,629 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1814 transitions. [2023-09-01 07:35:43,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1814 transitions. [2023-09-01 07:35:43,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:35:43,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1814 transitions. [2023-09-01 07:35:43,631 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) [2023-09-01 07:35:43,633 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) [2023-09-01 07:35:43,633 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) [2023-09-01 07:35:43,633 INFO L175 Difference]: Start difference. First operand has 66 places, 50 transitions, 233 flow. Second operand 3 states and 1814 transitions. [2023-09-01 07:35:43,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 48 transitions, 315 flow [2023-09-01 07:35:43,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 48 transitions, 304 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-09-01 07:35:43,636 INFO L231 Difference]: Finished difference. Result has 61 places, 44 transitions, 201 flow [2023-09-01 07:35:43,636 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} [2023-09-01 07:35:43,637 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -9 predicate places. [2023-09-01 07:35:43,637 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 44 transitions, 201 flow [2023-09-01 07:35:43,637 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) [2023-09-01 07:35:43,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:35:43,638 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:35:43,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 07:35:43,839 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 [2023-09-01 07:35:43,840 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-09-01 07:35:43,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:35:43,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1247540455, now seen corresponding path program 1 times [2023-09-01 07:35:43,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:35:43,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256164534] [2023-09-01 07:35:43,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:43,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:35:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:43,899 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 07:35:43,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:35:43,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256164534] [2023-09-01 07:35:43,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256164534] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:35:43,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:35:43,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:35:43,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461591922] [2023-09-01 07:35:43,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:35:43,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:35:43,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:35:43,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:35:43,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:35:43,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 587 out of 1464 [2023-09-01 07:35:43,933 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) [2023-09-01 07:35:43,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:35:43,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 587 of 1464 [2023-09-01 07:35:43,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:35:44,273 INFO L130 PetriNetUnfolder]: 891/1476 cut-off events. [2023-09-01 07:35:44,273 INFO L131 PetriNetUnfolder]: For 243/243 co-relation queries the response was YES. [2023-09-01 07:35:44,276 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. [2023-09-01 07:35:44,279 INFO L137 encePairwiseOnDemand]: 1462/1464 looper letters, 42 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-09-01 07:35:44,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 43 transitions, 283 flow [2023-09-01 07:35:44,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:35:44,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:35:44,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1790 transitions. [2023-09-01 07:35:44,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075591985428051 [2023-09-01 07:35:44,283 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1790 transitions. [2023-09-01 07:35:44,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1790 transitions. [2023-09-01 07:35:44,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:35:44,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1790 transitions. [2023-09-01 07:35:44,286 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) [2023-09-01 07:35:44,289 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) [2023-09-01 07:35:44,289 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) [2023-09-01 07:35:44,289 INFO L175 Difference]: Start difference. First operand has 61 places, 44 transitions, 201 flow. Second operand 3 states and 1790 transitions. [2023-09-01 07:35:44,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 43 transitions, 283 flow [2023-09-01 07:35:44,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 43 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:35:44,291 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 198 flow [2023-09-01 07:35:44,291 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} [2023-09-01 07:35:44,292 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -12 predicate places. [2023-09-01 07:35:44,292 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 198 flow [2023-09-01 07:35:44,292 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) [2023-09-01 07:35:44,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:35:44,293 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:35:44,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-09-01 07:35:44,293 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-09-01 07:35:44,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:35:44,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1247540062, now seen corresponding path program 1 times [2023-09-01 07:35:44,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:35:44,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515549263] [2023-09-01 07:35:44,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:44,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:35:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:44,408 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 07:35:44,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:35:44,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515549263] [2023-09-01 07:35:44,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515549263] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:35:44,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51395068] [2023-09-01 07:35:44,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:44,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:35:44,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:35:44,410 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) [2023-09-01 07:35:44,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 07:35:44,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:44,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 07:35:44,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:35:44,665 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 07:35:44,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:35:44,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51395068] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:35:44,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:35:44,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 07:35:44,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567302218] [2023-09-01 07:35:44,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:35:44,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:35:44,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:35:44,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:35:44,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:35:44,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 587 out of 1464 [2023-09-01 07:35:44,718 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) [2023-09-01 07:35:44,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:35:44,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 587 of 1464 [2023-09-01 07:35:44,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:35:45,047 INFO L130 PetriNetUnfolder]: 777/1284 cut-off events. [2023-09-01 07:35:45,047 INFO L131 PetriNetUnfolder]: For 252/252 co-relation queries the response was YES. [2023-09-01 07:35:45,049 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. [2023-09-01 07:35:45,052 INFO L137 encePairwiseOnDemand]: 1459/1464 looper letters, 68 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-09-01 07:35:45,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 70 transitions, 414 flow [2023-09-01 07:35:45,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:35:45,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:35:45,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2399 transitions. [2023-09-01 07:35:45,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40966530054644806 [2023-09-01 07:35:45,055 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2399 transitions. [2023-09-01 07:35:45,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2399 transitions. [2023-09-01 07:35:45,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:35:45,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2399 transitions. [2023-09-01 07:35:45,058 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) [2023-09-01 07:35:45,062 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) [2023-09-01 07:35:45,062 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) [2023-09-01 07:35:45,062 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 198 flow. Second operand 4 states and 2399 transitions. [2023-09-01 07:35:45,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 70 transitions, 414 flow [2023-09-01 07:35:45,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 70 transitions, 413 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:35:45,064 INFO L231 Difference]: Finished difference. Result has 57 places, 40 transitions, 189 flow [2023-09-01 07:35:45,065 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} [2023-09-01 07:35:45,065 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -13 predicate places. [2023-09-01 07:35:45,065 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 40 transitions, 189 flow [2023-09-01 07:35:45,065 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) [2023-09-01 07:35:45,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:35:45,066 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:35:45,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 07:35:45,272 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 [2023-09-01 07:35:45,273 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-09-01 07:35:45,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:35:45,273 INFO L85 PathProgramCache]: Analyzing trace with hash 19061962, now seen corresponding path program 1 times [2023-09-01 07:35:45,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:35:45,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426963817] [2023-09-01 07:35:45,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:45,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:35:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:45,351 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 07:35:45,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:35:45,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426963817] [2023-09-01 07:35:45,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426963817] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:35:45,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100919597] [2023-09-01 07:35:45,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:45,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:35:45,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:35:45,353 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) [2023-09-01 07:35:45,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 07:35:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:45,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 07:35:45,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:35:45,625 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 07:35:45,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:35:45,649 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 07:35:45,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100919597] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:35:45,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:35:45,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 07:35:45,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236153463] [2023-09-01 07:35:45,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:35:45,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 07:35:45,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:35:45,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 07:35:45,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:35:45,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 586 out of 1464 [2023-09-01 07:35:45,745 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) [2023-09-01 07:35:45,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:35:45,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 586 of 1464 [2023-09-01 07:35:45,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:35:46,171 INFO L130 PetriNetUnfolder]: 1069/1758 cut-off events. [2023-09-01 07:35:46,171 INFO L131 PetriNetUnfolder]: For 413/413 co-relation queries the response was YES. [2023-09-01 07:35:46,174 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. [2023-09-01 07:35:46,175 INFO L137 encePairwiseOnDemand]: 1459/1464 looper letters, 0 selfloop transitions, 0 changer transitions 100/100 dead transitions. [2023-09-01 07:35:46,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 100 transitions, 563 flow [2023-09-01 07:35:46,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:35:46,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:35:46,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3590 transitions. [2023-09-01 07:35:46,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4086976320582878 [2023-09-01 07:35:46,179 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3590 transitions. [2023-09-01 07:35:46,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3590 transitions. [2023-09-01 07:35:46,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:35:46,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3590 transitions. [2023-09-01 07:35:46,183 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) [2023-09-01 07:35:46,188 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) [2023-09-01 07:35:46,188 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) [2023-09-01 07:35:46,189 INFO L175 Difference]: Start difference. First operand has 57 places, 40 transitions, 189 flow. Second operand 6 states and 3590 transitions. [2023-09-01 07:35:46,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 100 transitions, 563 flow [2023-09-01 07:35:46,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 100 transitions, 560 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:35:46,191 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2023-09-01 07:35:46,191 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} [2023-09-01 07:35:46,191 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -12 predicate places. [2023-09-01 07:35:46,192 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2023-09-01 07:35:46,192 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) [2023-09-01 07:35:46,194 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (79 of 80 remaining) [2023-09-01 07:35:46,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (78 of 80 remaining) [2023-09-01 07:35:46,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (77 of 80 remaining) [2023-09-01 07:35:46,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (76 of 80 remaining) [2023-09-01 07:35:46,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (75 of 80 remaining) [2023-09-01 07:35:46,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (74 of 80 remaining) [2023-09-01 07:35:46,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (73 of 80 remaining) [2023-09-01 07:35:46,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (72 of 80 remaining) [2023-09-01 07:35:46,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (71 of 80 remaining) [2023-09-01 07:35:46,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (70 of 80 remaining) [2023-09-01 07:35:46,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (69 of 80 remaining) [2023-09-01 07:35:46,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (68 of 80 remaining) [2023-09-01 07:35:46,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (67 of 80 remaining) [2023-09-01 07:35:46,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (66 of 80 remaining) [2023-09-01 07:35:46,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (65 of 80 remaining) [2023-09-01 07:35:46,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (64 of 80 remaining) [2023-09-01 07:35:46,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (63 of 80 remaining) [2023-09-01 07:35:46,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (62 of 80 remaining) [2023-09-01 07:35:46,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (61 of 80 remaining) [2023-09-01 07:35:46,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (60 of 80 remaining) [2023-09-01 07:35:46,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 80 remaining) [2023-09-01 07:35:46,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 80 remaining) [2023-09-01 07:35:46,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 80 remaining) [2023-09-01 07:35:46,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 80 remaining) [2023-09-01 07:35:46,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 80 remaining) [2023-09-01 07:35:46,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 80 remaining) [2023-09-01 07:35:46,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 80 remaining) [2023-09-01 07:35:46,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 80 remaining) [2023-09-01 07:35:46,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 80 remaining) [2023-09-01 07:35:46,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 80 remaining) [2023-09-01 07:35:46,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 80 remaining) [2023-09-01 07:35:46,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 80 remaining) [2023-09-01 07:35:46,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 80 remaining) [2023-09-01 07:35:46,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 80 remaining) [2023-09-01 07:35:46,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 80 remaining) [2023-09-01 07:35:46,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 80 remaining) [2023-09-01 07:35:46,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 80 remaining) [2023-09-01 07:35:46,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 80 remaining) [2023-09-01 07:35:46,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 80 remaining) [2023-09-01 07:35:46,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 80 remaining) [2023-09-01 07:35:46,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 80 remaining) [2023-09-01 07:35:46,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 80 remaining) [2023-09-01 07:35:46,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 80 remaining) [2023-09-01 07:35:46,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 80 remaining) [2023-09-01 07:35:46,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 80 remaining) [2023-09-01 07:35:46,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 80 remaining) [2023-09-01 07:35:46,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 80 remaining) [2023-09-01 07:35:46,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 80 remaining) [2023-09-01 07:35:46,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 80 remaining) [2023-09-01 07:35:46,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 80 remaining) [2023-09-01 07:35:46,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 80 remaining) [2023-09-01 07:35:46,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 80 remaining) [2023-09-01 07:35:46,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 80 remaining) [2023-09-01 07:35:46,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 80 remaining) [2023-09-01 07:35:46,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 80 remaining) [2023-09-01 07:35:46,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 80 remaining) [2023-09-01 07:35:46,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 80 remaining) [2023-09-01 07:35:46,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 80 remaining) [2023-09-01 07:35:46,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 80 remaining) [2023-09-01 07:35:46,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 80 remaining) [2023-09-01 07:35:46,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 80 remaining) [2023-09-01 07:35:46,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 80 remaining) [2023-09-01 07:35:46,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 80 remaining) [2023-09-01 07:35:46,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 80 remaining) [2023-09-01 07:35:46,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 80 remaining) [2023-09-01 07:35:46,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 80 remaining) [2023-09-01 07:35:46,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 80 remaining) [2023-09-01 07:35:46,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 80 remaining) [2023-09-01 07:35:46,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 80 remaining) [2023-09-01 07:35:46,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 80 remaining) [2023-09-01 07:35:46,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 80 remaining) [2023-09-01 07:35:46,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 80 remaining) [2023-09-01 07:35:46,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 80 remaining) [2023-09-01 07:35:46,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 80 remaining) [2023-09-01 07:35:46,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 80 remaining) [2023-09-01 07:35:46,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 80 remaining) [2023-09-01 07:35:46,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 80 remaining) [2023-09-01 07:35:46,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 80 remaining) [2023-09-01 07:35:46,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 80 remaining) [2023-09-01 07:35:46,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 80 remaining) [2023-09-01 07:35:46,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-09-01 07:35:46,414 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 [2023-09-01 07:35:46,414 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] [2023-09-01 07:35:46,420 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 07:35:46,420 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 07:35:46,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 07:35:46 BasicIcfg [2023-09-01 07:35:46,423 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 07:35:46,423 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 07:35:46,424 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 07:35:46,424 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 07:35:46,424 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:34:40" (3/4) ... [2023-09-01 07:35:46,426 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 07:35:46,430 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 07:35:46,430 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 07:35:46,435 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-09-01 07:35:46,435 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 07:35:46,435 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 07:35:46,435 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 07:35:46,470 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 07:35:46,471 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 07:35:46,471 INFO L158 Benchmark]: Toolchain (without parser) took 67138.93ms. Allocated memory was 81.8MB in the beginning and 2.5GB in the end (delta: 2.4GB). Free memory was 60.0MB in the beginning and 2.1GB in the end (delta: -2.1GB). Peak memory consumption was 350.1MB. Max. memory is 16.1GB. [2023-09-01 07:35:46,471 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 67.1MB. Free memory is still 45.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 07:35:46,472 INFO L158 Benchmark]: CACSL2BoogieTranslator took 354.90ms. Allocated memory is still 81.8MB. Free memory was 60.0MB in the beginning and 46.5MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-09-01 07:35:46,472 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.12ms. Allocated memory is still 81.8MB. Free memory was 46.5MB in the beginning and 43.0MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 07:35:46,472 INFO L158 Benchmark]: Boogie Preprocessor took 104.91ms. Allocated memory is still 81.8MB. Free memory was 43.0MB in the beginning and 60.9MB in the end (delta: -17.9MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2023-09-01 07:35:46,472 INFO L158 Benchmark]: RCFGBuilder took 964.55ms. Allocated memory is still 81.8MB. Free memory was 60.9MB in the beginning and 43.3MB in the end (delta: 17.5MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. [2023-09-01 07:35:46,473 INFO L158 Benchmark]: TraceAbstraction took 65586.22ms. Allocated memory was 81.8MB in the beginning and 2.5GB in the end (delta: 2.4GB). Free memory was 42.8MB in the beginning and 2.1GB in the end (delta: -2.1GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2023-09-01 07:35:46,473 INFO L158 Benchmark]: Witness Printer took 47.25ms. Allocated memory is still 2.5GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 07:35:46,474 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 67.1MB. Free memory is still 45.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 354.90ms. Allocated memory is still 81.8MB. Free memory was 60.0MB in the beginning and 46.5MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.12ms. Allocated memory is still 81.8MB. Free memory was 46.5MB in the beginning and 43.0MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 104.91ms. Allocated memory is still 81.8MB. Free memory was 43.0MB in the beginning and 60.9MB in the end (delta: -17.9MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * RCFGBuilder took 964.55ms. Allocated memory is still 81.8MB. Free memory was 60.9MB in the beginning and 43.3MB in the end (delta: 17.5MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. * TraceAbstraction took 65586.22ms. Allocated memory was 81.8MB in the beginning and 2.5GB in the end (delta: 2.4GB). Free memory was 42.8MB in the beginning and 2.1GB in the end (delta: -2.1GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. * Witness Printer took 47.25ms. Allocated memory is still 2.5GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 4.5MB). 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: 41.7s, 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: 65.3s, OverallIterations: 23, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 15.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 42.0s, 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, 2.3s 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! [2023-09-01 07:35:46,509 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