./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-node-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-node-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 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f --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 07:32:08,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:32:08,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:32:08,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:32:08,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:32:08,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:32:08,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:32:08,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:32:08,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:32:08,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:32:08,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:32:08,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:32:08,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:32:08,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:32:08,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:32:08,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:32:08,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:32:08,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:32:08,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:32:08,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:32:08,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:32:08,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:32:08,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:32:08,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:32:08,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:32:08,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:32:08,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:32:08,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:32:08,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:32:08,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:32:08,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:32:08,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:32:08,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:32:08,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:32:08,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:32:08,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:32:08,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:32:08,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:32:08,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:32:08,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:32:08,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:32:08,464 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:32:08,497 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:32:08,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:32:08,499 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:32:08,499 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:32:08,500 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:32:08,500 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:32:08,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:32:08,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:32:08,501 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:32:08,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:32:08,502 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:32:08,503 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:32:08,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:32:08,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:32:08,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:32:08,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:32:08,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:32:08,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:32:08,504 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:32:08,504 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:32:08,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:32:08,505 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:32:08,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:32:08,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:32:08,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:32:08,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:32:08,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:32:08,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:32:08,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:32:08,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:32:08,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:32:08,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:32:08,508 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:32:08,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:32:08,508 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:32:08,508 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:32:08,509 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:32:08,509 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:32:08,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:32:08,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:32:08,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:32:08,891 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:32:08,892 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:32:08,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-symm.wvr.c [2023-09-01 07:32:09,601 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:32:10,648 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:32:10,650 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c [2023-09-01 07:32:10,659 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/440ede808/2eea41bd6ba9462389696d57311436c2/FLAG8c637197f [2023-09-01 07:32:10,675 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/440ede808/2eea41bd6ba9462389696d57311436c2 [2023-09-01 07:32:10,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:32:10,679 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:32:10,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:32:10,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:32:10,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:32:10,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:32:10" (1/1) ... [2023-09-01 07:32:10,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2232089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:10, skipping insertion in model container [2023-09-01 07:32:10,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:32:10" (1/1) ... [2023-09-01 07:32:10,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:32:10,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:32:10,904 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-node-symm.wvr.c[3305,3318] [2023-09-01 07:32:10,922 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:32:10,930 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:32:10,952 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-node-symm.wvr.c[3305,3318] [2023-09-01 07:32:10,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:32:10,971 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:32:10,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:10 WrapperNode [2023-09-01 07:32:10,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:32:10,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:32:10,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:32:10,973 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:32:10,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:10" (1/1) ... [2023-09-01 07:32:10,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:10" (1/1) ... [2023-09-01 07:32:11,044 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 340 [2023-09-01 07:32:11,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:32:11,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:32:11,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:32:11,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:32:11,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:10" (1/1) ... [2023-09-01 07:32:11,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:10" (1/1) ... [2023-09-01 07:32:11,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:10" (1/1) ... [2023-09-01 07:32:11,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:10" (1/1) ... [2023-09-01 07:32:11,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:10" (1/1) ... [2023-09-01 07:32:11,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:10" (1/1) ... [2023-09-01 07:32:11,107 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:10" (1/1) ... [2023-09-01 07:32:11,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:10" (1/1) ... [2023-09-01 07:32:11,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:32:11,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:32:11,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:32:11,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:32:11,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:10" (1/1) ... [2023-09-01 07:32:11,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:32:11,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:32:11,146 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 07:32:11,183 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 07:32:11,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:32:11,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:32:11,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:32:11,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:32:11,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 07:32:11,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 07:32:11,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 07:32:11,206 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 07:32:11,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:32:11,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 07:32:11,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:32:11,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:32:11,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:32:11,208 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 07:32:11,390 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:32:11,392 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:32:11,910 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:32:11,923 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:32:11,923 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 07:32:11,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:32:11 BoogieIcfgContainer [2023-09-01 07:32:11,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:32:11,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:32:11,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:32:11,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:32:11,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:32:10" (1/3) ... [2023-09-01 07:32:11,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2c3ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:32:11, skipping insertion in model container [2023-09-01 07:32:11,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:10" (2/3) ... [2023-09-01 07:32:11,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2c3ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:32:11, skipping insertion in model container [2023-09-01 07:32:11,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:32:11" (3/3) ... [2023-09-01 07:32:11,937 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2023-09-01 07:32:11,944 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:32:11,952 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:32:11,953 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-09-01 07:32:11,953 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:32:12,096 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 07:32:12,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 397 places, 422 transitions, 860 flow [2023-09-01 07:32:12,309 INFO L130 PetriNetUnfolder]: 32/420 cut-off events. [2023-09-01 07:32:12,309 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 07:32:12,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 420 events. 32/420 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 586 event pairs, 0 based on Foata normal form. 0/358 useless extension candidates. Maximal degree in co-relation 325. Up to 2 conditions per place. [2023-09-01 07:32:12,318 INFO L82 GeneralOperation]: Start removeDead. Operand has 397 places, 422 transitions, 860 flow [2023-09-01 07:32:12,327 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 381 places, 405 transitions, 822 flow [2023-09-01 07:32:12,331 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:32:12,343 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 381 places, 405 transitions, 822 flow [2023-09-01 07:32:12,347 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 381 places, 405 transitions, 822 flow [2023-09-01 07:32:12,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 381 places, 405 transitions, 822 flow [2023-09-01 07:32:12,434 INFO L130 PetriNetUnfolder]: 31/405 cut-off events. [2023-09-01 07:32:12,434 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 07:32:12,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 405 events. 31/405 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 582 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 325. Up to 2 conditions per place. [2023-09-01 07:32:12,444 INFO L119 LiptonReduction]: Number of co-enabled transitions 11900 [2023-09-01 07:32:31,661 INFO L134 LiptonReduction]: Checked pairs total: 14732 [2023-09-01 07:32:31,662 INFO L136 LiptonReduction]: Total number of compositions: 525 [2023-09-01 07:32:31,674 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 07:32:31,680 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;@15413baa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:32:31,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2023-09-01 07:32:31,682 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 07:32:31,682 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:32:31,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:32:31,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 07:32:31,683 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 07:32:31,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:32:31,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1667, now seen corresponding path program 1 times [2023-09-01 07:32:31,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:32:31,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938164423] [2023-09-01 07:32:31,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:32:31,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:32:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:32:31,773 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 07:32:31,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:32:31,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938164423] [2023-09-01 07:32:31,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938164423] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:32:31,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:32:31,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 07:32:31,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679539896] [2023-09-01 07:32:31,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:32:31,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 07:32:31,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:32:31,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 07:32:31,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 07:32:31,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 395 out of 947 [2023-09-01 07:32:31,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 120 flow. Second operand has 2 states, 2 states have (on average 395.5) internal successors, (791), 2 states have internal predecessors, (791), 0 states have call successors, (0), 0 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 07:32:31,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:32:31,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 395 of 947 [2023-09-01 07:32:31,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:32:32,009 INFO L130 PetriNetUnfolder]: 213/399 cut-off events. [2023-09-01 07:32:32,009 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-09-01 07:32:32,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 399 events. 213/399 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1555 event pairs, 195 based on Foata normal form. 1/216 useless extension candidates. Maximal degree in co-relation 726. Up to 400 conditions per place. [2023-09-01 07:32:32,013 INFO L137 encePairwiseOnDemand]: 939/947 looper letters, 45 selfloop transitions, 0 changer transitions 1/46 dead transitions. [2023-09-01 07:32:32,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 196 flow [2023-09-01 07:32:32,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 07:32:32,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 07:32:32,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 844 transitions. [2023-09-01 07:32:32,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44561774023231254 [2023-09-01 07:32:32,036 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 844 transitions. [2023-09-01 07:32:32,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 844 transitions. [2023-09-01 07:32:32,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:32:32,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 844 transitions. [2023-09-01 07:32:32,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 422.0) internal successors, (844), 2 states have internal predecessors, (844), 0 states have call successors, (0), 0 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 07:32:32,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 947.0) internal successors, (2841), 3 states have internal predecessors, (2841), 0 states have call successors, (0), 0 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 07:32:32,059 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 947.0) internal successors, (2841), 3 states have internal predecessors, (2841), 0 states have call successors, (0), 0 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 07:32:32,061 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 120 flow. Second operand 2 states and 844 transitions. [2023-09-01 07:32:32,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 196 flow [2023-09-01 07:32:32,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 188 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 07:32:32,067 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 93 flow [2023-09-01 07:32:32,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=93, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2023-09-01 07:32:32,072 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -11 predicate places. [2023-09-01 07:32:32,072 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 93 flow [2023-09-01 07:32:32,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 395.5) internal successors, (791), 2 states have internal predecessors, (791), 0 states have call successors, (0), 0 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 07:32:32,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:32:32,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 07:32:32,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:32:32,075 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 07:32:32,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:32:32,085 INFO L85 PathProgramCache]: Analyzing trace with hash 53570, now seen corresponding path program 1 times [2023-09-01 07:32:32,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:32:32,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467032346] [2023-09-01 07:32:32,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:32:32,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:32:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:32:32,304 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 07:32:32,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:32:32,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467032346] [2023-09-01 07:32:32,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467032346] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:32:32,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:32:32,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:32:32,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292623089] [2023-09-01 07:32:32,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:32:32,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:32:32,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:32:32,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:32:32,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:32:32,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 947 [2023-09-01 07:32:32,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 389.6666666666667) internal successors, (1169), 3 states have internal predecessors, (1169), 0 states have call successors, (0), 0 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 07:32:32,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:32:32,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 947 [2023-09-01 07:32:32,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:32:32,474 INFO L130 PetriNetUnfolder]: 213/396 cut-off events. [2023-09-01 07:32:32,474 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:32:32,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 396 events. 213/396 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1532 event pairs, 195 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 804. Up to 396 conditions per place. [2023-09-01 07:32:32,477 INFO L137 encePairwiseOnDemand]: 944/947 looper letters, 42 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-09-01 07:32:32,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 175 flow [2023-09-01 07:32:32,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:32:32,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:32:32,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1212 transitions. [2023-09-01 07:32:32,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.426610348468849 [2023-09-01 07:32:32,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1212 transitions. [2023-09-01 07:32:32,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1212 transitions. [2023-09-01 07:32:32,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:32:32,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1212 transitions. [2023-09-01 07:32:32,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 404.0) internal successors, (1212), 3 states have internal predecessors, (1212), 0 states have call successors, (0), 0 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 07:32:32,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 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 07:32:32,491 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 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 07:32:32,492 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 93 flow. Second operand 3 states and 1212 transitions. [2023-09-01 07:32:32,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 175 flow [2023-09-01 07:32:32,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 175 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 07:32:32,493 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 91 flow [2023-09-01 07:32:32,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=42, 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=91, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-09-01 07:32:32,494 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -12 predicate places. [2023-09-01 07:32:32,495 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 91 flow [2023-09-01 07:32:32,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 389.6666666666667) internal successors, (1169), 3 states have internal predecessors, (1169), 0 states have call successors, (0), 0 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 07:32:32,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:32:32,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 07:32:32,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 07:32:32,496 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 07:32:32,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:32:32,497 INFO L85 PathProgramCache]: Analyzing trace with hash 53574, now seen corresponding path program 1 times [2023-09-01 07:32:32,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:32:32,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415856707] [2023-09-01 07:32:32,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:32:32,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:32:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:32:32,579 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 07:32:32,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:32:32,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415856707] [2023-09-01 07:32:32,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415856707] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:32:32,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:32:32,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:32:32,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148291968] [2023-09-01 07:32:32,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:32:32,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:32:32,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:32:32,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:32:32,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:32:32,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 947 [2023-09-01 07:32:32,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 389.6666666666667) internal successors, (1169), 3 states have internal predecessors, (1169), 0 states have call successors, (0), 0 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 07:32:32,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:32:32,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 947 [2023-09-01 07:32:32,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:32:32,831 INFO L130 PetriNetUnfolder]: 425/787 cut-off events. [2023-09-01 07:32:32,832 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:32:32,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1603 conditions, 787 events. 425/787 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3709 event pairs, 390 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 1599. Up to 397 conditions per place. [2023-09-01 07:32:32,835 INFO L137 encePairwiseOnDemand]: 939/947 looper letters, 77 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2023-09-01 07:32:32,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 81 transitions, 332 flow [2023-09-01 07:32:32,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:32:32,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:32:32,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1252 transitions. [2023-09-01 07:32:32,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44068989792326646 [2023-09-01 07:32:32,839 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1252 transitions. [2023-09-01 07:32:32,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1252 transitions. [2023-09-01 07:32:32,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:32:32,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1252 transitions. [2023-09-01 07:32:32,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 417.3333333333333) internal successors, (1252), 3 states have internal predecessors, (1252), 0 states have call successors, (0), 0 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 07:32:32,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 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 07:32:32,849 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 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 07:32:32,849 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 91 flow. Second operand 3 states and 1252 transitions. [2023-09-01 07:32:32,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 81 transitions, 332 flow [2023-09-01 07:32:32,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 81 transitions, 331 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:32:32,852 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 126 flow [2023-09-01 07:32:32,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2023-09-01 07:32:32,853 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -9 predicate places. [2023-09-01 07:32:32,853 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 126 flow [2023-09-01 07:32:32,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 389.6666666666667) internal successors, (1169), 3 states have internal predecessors, (1169), 0 states have call successors, (0), 0 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 07:32:32,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:32:32,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 07:32:32,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 07:32:32,854 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 07:32:32,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:32:32,855 INFO L85 PathProgramCache]: Analyzing trace with hash 53569, now seen corresponding path program 1 times [2023-09-01 07:32:32,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:32:32,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401923419] [2023-09-01 07:32:32,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:32:32,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:32:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:32:32,896 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 07:32:32,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:32:32,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401923419] [2023-09-01 07:32:32,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401923419] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:32:32,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:32:32,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:32:32,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577652483] [2023-09-01 07:32:32,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:32:32,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:32:32,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:32:32,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:32:32,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:32:32,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 947 [2023-09-01 07:32:32,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 387.6666666666667) internal successors, (1163), 3 states have internal predecessors, (1163), 0 states have call successors, (0), 0 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 07:32:32,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:32:32,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 947 [2023-09-01 07:32:32,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:32:33,107 INFO L130 PetriNetUnfolder]: 425/783 cut-off events. [2023-09-01 07:32:33,108 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:32:33,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1611 conditions, 783 events. 425/783 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3664 event pairs, 390 based on Foata normal form. 2/433 useless extension candidates. Maximal degree in co-relation 1606. Up to 783 conditions per place. [2023-09-01 07:32:33,112 INFO L137 encePairwiseOnDemand]: 944/947 looper letters, 43 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-09-01 07:32:33,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 210 flow [2023-09-01 07:32:33,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:32:33,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:32:33,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1204 transitions. [2023-09-01 07:32:33,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4237944385779655 [2023-09-01 07:32:33,116 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1204 transitions. [2023-09-01 07:32:33,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1204 transitions. [2023-09-01 07:32:33,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:32:33,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1204 transitions. [2023-09-01 07:32:33,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 401.3333333333333) internal successors, (1204), 3 states have internal predecessors, (1204), 0 states have call successors, (0), 0 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 07:32:33,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 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 07:32:33,126 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 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 07:32:33,126 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 126 flow. Second operand 3 states and 1204 transitions. [2023-09-01 07:32:33,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 44 transitions, 210 flow [2023-09-01 07:32:33,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 44 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:32:33,127 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 116 flow [2023-09-01 07:32:33,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-09-01 07:32:33,128 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -11 predicate places. [2023-09-01 07:32:33,129 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 116 flow [2023-09-01 07:32:33,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 387.6666666666667) internal successors, (1163), 3 states have internal predecessors, (1163), 0 states have call successors, (0), 0 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 07:32:33,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:32:33,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:32:33,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 07:32:33,130 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 07:32:33,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:32:33,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1662381, now seen corresponding path program 1 times [2023-09-01 07:32:33,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:32:33,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299945861] [2023-09-01 07:32:33,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:32:33,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:32:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:32:33,210 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 07:32:33,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:32:33,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299945861] [2023-09-01 07:32:33,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299945861] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:32:33,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488940280] [2023-09-01 07:32:33,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:32:33,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:32:33,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:32:33,217 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 07:32:33,243 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 07:32:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:32:33,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:32:33,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:32:33,350 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 07:32:33,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:32:33,365 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 07:32:33,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488940280] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:32:33,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:32:33,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 07:32:33,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933907176] [2023-09-01 07:32:33,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:32:33,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 07:32:33,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:32:33,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 07:32:33,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:32:33,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 947 [2023-09-01 07:32:33,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 390.14285714285717) internal successors, (2731), 7 states have internal predecessors, (2731), 0 states have call successors, (0), 0 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 07:32:33,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:32:33,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 947 [2023-09-01 07:32:33,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:32:34,012 INFO L130 PetriNetUnfolder]: 1067/1956 cut-off events. [2023-09-01 07:32:34,012 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:32:34,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4005 conditions, 1956 events. 1067/1956 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 11056 event pairs, 975 based on Foata normal form. 0/1071 useless extension candidates. Maximal degree in co-relation 4000. Up to 393 conditions per place. [2023-09-01 07:32:34,021 INFO L137 encePairwiseOnDemand]: 939/947 looper letters, 170 selfloop transitions, 21 changer transitions 0/191 dead transitions. [2023-09-01 07:32:34,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 191 transitions, 834 flow [2023-09-01 07:32:34,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:32:34,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:32:34,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2920 transitions. [2023-09-01 07:32:34,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44048876150248906 [2023-09-01 07:32:34,029 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2920 transitions. [2023-09-01 07:32:34,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2920 transitions. [2023-09-01 07:32:34,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:32:34,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2920 transitions. [2023-09-01 07:32:34,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 417.14285714285717) internal successors, (2920), 7 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:32:34,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 947.0) internal successors, (7576), 8 states have internal predecessors, (7576), 0 states have call successors, (0), 0 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 07:32:34,049 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 947.0) internal successors, (7576), 8 states have internal predecessors, (7576), 0 states have call successors, (0), 0 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 07:32:34,050 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 116 flow. Second operand 7 states and 2920 transitions. [2023-09-01 07:32:34,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 191 transitions, 834 flow [2023-09-01 07:32:34,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 191 transitions, 833 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:32:34,053 INFO L231 Difference]: Finished difference. Result has 53 places, 59 transitions, 254 flow [2023-09-01 07:32:34,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=254, PETRI_PLACES=53, PETRI_TRANSITIONS=59} [2023-09-01 07:32:34,054 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2023-09-01 07:32:34,054 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 59 transitions, 254 flow [2023-09-01 07:32:34,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 390.14285714285717) internal successors, (2731), 7 states have internal predecessors, (2731), 0 states have call successors, (0), 0 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 07:32:34,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:32:34,056 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-09-01 07:32:34,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 07:32:34,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:32:34,268 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 07:32:34,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:32:34,269 INFO L85 PathProgramCache]: Analyzing trace with hash 51535315, now seen corresponding path program 1 times [2023-09-01 07:32:34,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:32:34,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655671700] [2023-09-01 07:32:34,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:32:34,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:32:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:32:34,348 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 07:32:34,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:32:34,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655671700] [2023-09-01 07:32:34,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655671700] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:32:34,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981426805] [2023-09-01 07:32:34,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:32:34,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:32:34,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:32:34,354 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 07:32:34,380 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 07:32:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:32:34,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:32:34,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:32:34,462 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 07:32:34,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:32:34,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981426805] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:32:34,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:32:34,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 07:32:34,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64667437] [2023-09-01 07:32:34,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:32:34,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:32:34,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:32:34,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:32:34,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 07:32:34,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 947 [2023-09-01 07:32:34,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 59 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 389.8) internal successors, (1949), 5 states have internal predecessors, (1949), 0 states have call successors, (0), 0 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 07:32:34,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:32:34,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 947 [2023-09-01 07:32:34,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:32:35,005 INFO L130 PetriNetUnfolder]: 1061/1948 cut-off events. [2023-09-01 07:32:35,005 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 07:32:35,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4014 conditions, 1948 events. 1061/1948 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 11020 event pairs, 975 based on Foata normal form. 2/1078 useless extension candidates. Maximal degree in co-relation 4006. Up to 1168 conditions per place. [2023-09-01 07:32:35,016 INFO L137 encePairwiseOnDemand]: 941/947 looper letters, 108 selfloop transitions, 9 changer transitions 0/117 dead transitions. [2023-09-01 07:32:35,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 117 transitions, 572 flow [2023-09-01 07:32:35,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:32:35,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:32:35,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2060 transitions. [2023-09-01 07:32:35,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4350580781414995 [2023-09-01 07:32:35,032 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2060 transitions. [2023-09-01 07:32:35,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2060 transitions. [2023-09-01 07:32:35,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:32:35,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2060 transitions. [2023-09-01 07:32:35,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 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 07:32:35,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 947.0) internal successors, (5682), 6 states have internal predecessors, (5682), 0 states have call successors, (0), 0 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 07:32:35,045 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 947.0) internal successors, (5682), 6 states have internal predecessors, (5682), 0 states have call successors, (0), 0 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 07:32:35,045 INFO L175 Difference]: Start difference. First operand has 53 places, 59 transitions, 254 flow. Second operand 5 states and 2060 transitions. [2023-09-01 07:32:35,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 117 transitions, 572 flow [2023-09-01 07:32:35,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 117 transitions, 553 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 07:32:35,048 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 199 flow [2023-09-01 07:32:35,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=199, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2023-09-01 07:32:35,049 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2023-09-01 07:32:35,050 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 199 flow [2023-09-01 07:32:35,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 389.8) internal successors, (1949), 5 states have internal predecessors, (1949), 0 states have call successors, (0), 0 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 07:32:35,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:32:35,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:32:35,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-09-01 07:32:35,256 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,SelfDestructingSolverStorable5 [2023-09-01 07:32:35,256 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 07:32:35,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:32:35,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1664174, now seen corresponding path program 1 times [2023-09-01 07:32:35,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:32:35,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973661993] [2023-09-01 07:32:35,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:32:35,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:32:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:32:35,289 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 07:32:35,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:32:35,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973661993] [2023-09-01 07:32:35,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973661993] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:32:35,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:32:35,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:32:35,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212836946] [2023-09-01 07:32:35,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:32:35,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:32:35,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:32:35,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:32:35,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:32:35,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 947 [2023-09-01 07:32:35,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 199 flow. Second operand has 3 states, 3 states have (on average 388.0) internal successors, (1164), 3 states have internal predecessors, (1164), 0 states have call successors, (0), 0 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 07:32:35,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:32:35,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 947 [2023-09-01 07:32:35,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:32:35,649 INFO L130 PetriNetUnfolder]: 1061/1943 cut-off events. [2023-09-01 07:32:35,650 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-09-01 07:32:35,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4003 conditions, 1943 events. 1061/1943 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 11081 event pairs, 975 based on Foata normal form. 0/1078 useless extension candidates. Maximal degree in co-relation 3994. Up to 1943 conditions per place. [2023-09-01 07:32:35,660 INFO L137 encePairwiseOnDemand]: 945/947 looper letters, 49 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2023-09-01 07:32:35,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 50 transitions, 297 flow [2023-09-01 07:32:35,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:32:35,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:32:35,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1200 transitions. [2023-09-01 07:32:35,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42238648363252373 [2023-09-01 07:32:35,664 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1200 transitions. [2023-09-01 07:32:35,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1200 transitions. [2023-09-01 07:32:35,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:32:35,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1200 transitions. [2023-09-01 07:32:35,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 400.0) internal successors, (1200), 3 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 07:32:35,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 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 07:32:35,671 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 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 07:32:35,672 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 199 flow. Second operand 3 states and 1200 transitions. [2023-09-01 07:32:35,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 50 transitions, 297 flow [2023-09-01 07:32:35,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 284 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 07:32:35,674 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 186 flow [2023-09-01 07:32:35,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=49, 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=186, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2023-09-01 07:32:35,675 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-09-01 07:32:35,675 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 186 flow [2023-09-01 07:32:35,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 388.0) internal successors, (1164), 3 states have internal predecessors, (1164), 0 states have call successors, (0), 0 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 07:32:35,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:32:35,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:32:35,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 07:32:35,676 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 07:32:35,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:32:35,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1664117, now seen corresponding path program 1 times [2023-09-01 07:32:35,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:32:35,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142869289] [2023-09-01 07:32:35,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:32:35,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:32:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:32:35,707 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 07:32:35,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:32:35,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142869289] [2023-09-01 07:32:35,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142869289] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:32:35,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:32:35,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:32:35,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676699031] [2023-09-01 07:32:35,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:32:35,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:32:35,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:32:35,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:32:35,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:32:35,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 947 [2023-09-01 07:32:35,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 390.0) internal successors, (1170), 3 states have internal predecessors, (1170), 0 states have call successors, (0), 0 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 07:32:35,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:32:35,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 947 [2023-09-01 07:32:35,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:32:36,056 INFO L130 PetriNetUnfolder]: 1061/1938 cut-off events. [2023-09-01 07:32:36,057 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 07:32:36,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3987 conditions, 1938 events. 1061/1938 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 11053 event pairs, 975 based on Foata normal form. 0/1078 useless extension candidates. Maximal degree in co-relation 3978. Up to 1938 conditions per place. [2023-09-01 07:32:36,067 INFO L137 encePairwiseOnDemand]: 945/947 looper letters, 48 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-09-01 07:32:36,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 49 transitions, 282 flow [2023-09-01 07:32:36,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:32:36,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:32:36,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1205 transitions. [2023-09-01 07:32:36,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42414642731432595 [2023-09-01 07:32:36,071 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1205 transitions. [2023-09-01 07:32:36,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1205 transitions. [2023-09-01 07:32:36,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:32:36,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1205 transitions. [2023-09-01 07:32:36,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 401.6666666666667) internal successors, (1205), 3 states have internal predecessors, (1205), 0 states have call successors, (0), 0 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 07:32:36,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 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 07:32:36,079 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 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 07:32:36,079 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 186 flow. Second operand 3 states and 1205 transitions. [2023-09-01 07:32:36,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 49 transitions, 282 flow [2023-09-01 07:32:36,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 281 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:32:36,081 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 185 flow [2023-09-01 07:32:36,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2023-09-01 07:32:36,082 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-09-01 07:32:36,082 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 185 flow [2023-09-01 07:32:36,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 390.0) internal successors, (1170), 3 states have internal predecessors, (1170), 0 states have call successors, (0), 0 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 07:32:36,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:32:36,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 07:32:36,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 07:32:36,084 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 07:32:36,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:32:36,084 INFO L85 PathProgramCache]: Analyzing trace with hash 51594369, now seen corresponding path program 1 times [2023-09-01 07:32:36,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:32:36,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205390409] [2023-09-01 07:32:36,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:32:36,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:32:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:32:36,119 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 07:32:36,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:32:36,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205390409] [2023-09-01 07:32:36,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205390409] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:32:36,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:32:36,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:32:36,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362246681] [2023-09-01 07:32:36,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:32:36,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:32:36,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:32:36,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:32:36,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:32:36,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 947 [2023-09-01 07:32:36,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 390.3333333333333) internal successors, (1171), 3 states have internal predecessors, (1171), 0 states have call successors, (0), 0 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 07:32:36,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:32:36,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 947 [2023-09-01 07:32:36,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:32:36,773 INFO L130 PetriNetUnfolder]: 2111/3833 cut-off events. [2023-09-01 07:32:36,773 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 07:32:36,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7838 conditions, 3833 events. 2111/3833 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 25124 event pairs, 1950 based on Foata normal form. 0/2133 useless extension candidates. Maximal degree in co-relation 7829. Up to 1939 conditions per place. [2023-09-01 07:32:36,793 INFO L137 encePairwiseOnDemand]: 939/947 looper letters, 71 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2023-09-01 07:32:36,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 75 transitions, 390 flow [2023-09-01 07:32:36,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:32:36,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:32:36,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1234 transitions. [2023-09-01 07:32:36,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4343541006687786 [2023-09-01 07:32:36,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1234 transitions. [2023-09-01 07:32:36,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1234 transitions. [2023-09-01 07:32:36,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:32:36,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1234 transitions. [2023-09-01 07:32:36,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 411.3333333333333) internal successors, (1234), 3 states have internal predecessors, (1234), 0 states have call successors, (0), 0 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 07:32:36,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 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 07:32:36,804 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 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 07:32:36,804 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 185 flow. Second operand 3 states and 1234 transitions. [2023-09-01 07:32:36,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 75 transitions, 390 flow [2023-09-01 07:32:36,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 75 transitions, 389 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:32:36,807 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 220 flow [2023-09-01 07:32:36,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2023-09-01 07:32:36,808 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2023-09-01 07:32:36,808 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 220 flow [2023-09-01 07:32:36,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 390.3333333333333) internal successors, (1171), 3 states have internal predecessors, (1171), 0 states have call successors, (0), 0 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 07:32:36,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:32:36,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 07:32:36,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 07:32:36,809 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 07:32:36,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:32:36,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1599428058, now seen corresponding path program 1 times [2023-09-01 07:32:36,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:32:36,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835641776] [2023-09-01 07:32:36,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:32:36,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:32:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:32:36,866 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 07:32:36,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:32:36,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835641776] [2023-09-01 07:32:36,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835641776] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:32:36,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875366293] [2023-09-01 07:32:36,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:32:36,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:32:36,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:32:36,869 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 07:32:36,893 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 07:32:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:32:36,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:32:36,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:32:36,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:32:36,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:32:36,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875366293] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:32:36,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:32:36,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-09-01 07:32:36,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405008763] [2023-09-01 07:32:36,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:32:36,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:32:36,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:32:36,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:32:36,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:32:37,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 947 [2023-09-01 07:32:37,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 388.6666666666667) internal successors, (1166), 3 states have internal predecessors, (1166), 0 states have call successors, (0), 0 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 07:32:37,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:32:37,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 947 [2023-09-01 07:32:37,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:32:37,613 INFO L130 PetriNetUnfolder]: 2110/3832 cut-off events. [2023-09-01 07:32:37,614 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-09-01 07:32:37,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7911 conditions, 3832 events. 2110/3832 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 25081 event pairs, 1950 based on Foata normal form. 1/2153 useless extension candidates. Maximal degree in co-relation 7901. Up to 3832 conditions per place. [2023-09-01 07:32:37,632 INFO L137 encePairwiseOnDemand]: 944/947 looper letters, 49 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-09-01 07:32:37,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 51 transitions, 318 flow [2023-09-01 07:32:37,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:32:37,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:32:37,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1200 transitions. [2023-09-01 07:32:37,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42238648363252373 [2023-09-01 07:32:37,636 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1200 transitions. [2023-09-01 07:32:37,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1200 transitions. [2023-09-01 07:32:37,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:32:37,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1200 transitions. [2023-09-01 07:32:37,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 400.0) internal successors, (1200), 3 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 07:32:37,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 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 07:32:37,643 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 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 07:32:37,643 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 220 flow. Second operand 3 states and 1200 transitions. [2023-09-01 07:32:37,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 51 transitions, 318 flow [2023-09-01 07:32:37,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 51 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:32:37,646 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 212 flow [2023-09-01 07:32:37,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2023-09-01 07:32:37,647 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2023-09-01 07:32:37,647 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 212 flow [2023-09-01 07:32:37,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 388.6666666666667) internal successors, (1166), 3 states have internal predecessors, (1166), 0 states have call successors, (0), 0 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 07:32:37,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:32:37,647 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 07:32:37,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 07:32:37,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:32:37,857 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 07:32:37,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:32:37,857 INFO L85 PathProgramCache]: Analyzing trace with hash -2014039290, now seen corresponding path program 2 times [2023-09-01 07:32:37,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:32:37,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094625854] [2023-09-01 07:32:37,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:32:37,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:32:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:32:37,945 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 07:32:37,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:32:37,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094625854] [2023-09-01 07:32:37,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094625854] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:32:37,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499512404] [2023-09-01 07:32:37,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:32:37,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:32:37,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:32:37,947 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 07:32:37,967 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 07:32:38,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:32:38,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:32:38,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 07:32:38,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:32:38,051 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 07:32:38,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:32:38,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499512404] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:32:38,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:32:38,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 07:32:38,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758967045] [2023-09-01 07:32:38,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:32:38,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:32:38,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:32:38,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:32:38,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:32:38,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 391 out of 947 [2023-09-01 07:32:38,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 392.0) internal successors, (1176), 3 states have internal predecessors, (1176), 0 states have call successors, (0), 0 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 07:32:38,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:32:38,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 391 of 947 [2023-09-01 07:32:38,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:32:38,701 INFO L130 PetriNetUnfolder]: 2110/3830 cut-off events. [2023-09-01 07:32:38,701 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 07:32:38,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7881 conditions, 3830 events. 2110/3830 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 25121 event pairs, 1950 based on Foata normal form. 2/2142 useless extension candidates. Maximal degree in co-relation 7871. Up to 3830 conditions per place. [2023-09-01 07:32:38,714 INFO L137 encePairwiseOnDemand]: 944/947 looper letters, 48 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-09-01 07:32:38,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 290 flow [2023-09-01 07:32:38,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:32:38,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:32:38,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1210 transitions. [2023-09-01 07:32:38,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4259063709961281 [2023-09-01 07:32:38,718 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1210 transitions. [2023-09-01 07:32:38,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1210 transitions. [2023-09-01 07:32:38,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:32:38,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1210 transitions. [2023-09-01 07:32:38,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 403.3333333333333) internal successors, (1210), 3 states have internal predecessors, (1210), 0 states have call successors, (0), 0 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 07:32:38,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 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 07:32:38,726 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 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 07:32:38,726 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 212 flow. Second operand 3 states and 1210 transitions. [2023-09-01 07:32:38,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 290 flow [2023-09-01 07:32:38,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 260 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-09-01 07:32:38,728 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 164 flow [2023-09-01 07:32:38,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2023-09-01 07:32:38,729 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2023-09-01 07:32:38,729 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 164 flow [2023-09-01 07:32:38,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 392.0) internal successors, (1176), 3 states have internal predecessors, (1176), 0 states have call successors, (0), 0 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 07:32:38,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:32:38,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 07:32:38,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-09-01 07:32:38,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:32:38,937 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 07:32:38,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:32:38,938 INFO L85 PathProgramCache]: Analyzing trace with hash -2012210157, now seen corresponding path program 1 times [2023-09-01 07:32:38,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:32:38,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907466371] [2023-09-01 07:32:38,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:32:38,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:32:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:32:38,982 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 07:32:38,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:32:38,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907466371] [2023-09-01 07:32:38,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907466371] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:32:38,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259240462] [2023-09-01 07:32:38,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:32:38,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:32:38,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:32:38,985 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 07:32:38,994 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 07:32:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:32:39,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:32:39,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:32:39,123 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 07:32:39,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:32:39,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259240462] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:32:39,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:32:39,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-09-01 07:32:39,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234696525] [2023-09-01 07:32:39,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:32:39,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:32:39,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:32:39,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:32:39,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 07:32:39,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 381 out of 947 [2023-09-01 07:32:39,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 382.5) internal successors, (1530), 4 states have internal predecessors, (1530), 0 states have call successors, (0), 0 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 07:32:39,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:32:39,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 381 of 947 [2023-09-01 07:32:39,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:32:39,655 INFO L130 PetriNetUnfolder]: 1689/3067 cut-off events. [2023-09-01 07:32:39,655 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:32:39,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6302 conditions, 3067 events. 1689/3067 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 19397 event pairs, 1560 based on Foata normal form. 1/1715 useless extension candidates. Maximal degree in co-relation 6296. Up to 3062 conditions per place. [2023-09-01 07:32:39,665 INFO L137 encePairwiseOnDemand]: 942/947 looper letters, 42 selfloop transitions, 7 changer transitions 0/49 dead transitions. [2023-09-01 07:32:39,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 49 transitions, 262 flow [2023-09-01 07:32:39,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:32:39,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:32:39,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1562 transitions. [2023-09-01 07:32:39,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4123548046462513 [2023-09-01 07:32:39,671 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1562 transitions. [2023-09-01 07:32:39,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1562 transitions. [2023-09-01 07:32:39,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:32:39,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1562 transitions. [2023-09-01 07:32:39,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 390.5) internal successors, (1562), 4 states have internal predecessors, (1562), 0 states have call successors, (0), 0 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 07:32:39,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 947.0) internal successors, (4735), 5 states have internal predecessors, (4735), 0 states have call successors, (0), 0 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 07:32:39,684 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 947.0) internal successors, (4735), 5 states have internal predecessors, (4735), 0 states have call successors, (0), 0 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 07:32:39,684 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 164 flow. Second operand 4 states and 1562 transitions. [2023-09-01 07:32:39,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 49 transitions, 262 flow [2023-09-01 07:32:39,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 261 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:32:39,686 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 186 flow [2023-09-01 07:32:39,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2023-09-01 07:32:39,688 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2023-09-01 07:32:39,689 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 186 flow [2023-09-01 07:32:39,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 382.5) internal successors, (1530), 4 states have internal predecessors, (1530), 0 states have call successors, (0), 0 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 07:32:39,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:32:39,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:32:39,697 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 07:32:39,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-09-01 07:32:39,896 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 07:32:39,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:32:39,896 INFO L85 PathProgramCache]: Analyzing trace with hash 2045520536, now seen corresponding path program 1 times [2023-09-01 07:32:39,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:32:39,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535827329] [2023-09-01 07:32:39,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:32:39,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:32:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:32:39,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:32:39,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:32:39,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535827329] [2023-09-01 07:32:39,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535827329] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:32:39,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122812440] [2023-09-01 07:32:39,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:32:39,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:32:39,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:32:39,946 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 07:32:39,968 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 07:32:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:32:40,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:32:40,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:32:40,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:32:40,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:32:40,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:32:40,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122812440] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:32:40,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:32:40,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 07:32:40,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206522837] [2023-09-01 07:32:40,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:32:40,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 07:32:40,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:32:40,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 07:32:40,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:32:40,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 947 [2023-09-01 07:32:40,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 390.7142857142857) internal successors, (2735), 7 states have internal predecessors, (2735), 0 states have call successors, (0), 0 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 07:32:40,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:32:40,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 947 [2023-09-01 07:32:40,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:32:41,297 INFO L130 PetriNetUnfolder]: 4233/7639 cut-off events. [2023-09-01 07:32:41,297 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 07:32:41,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15664 conditions, 7639 events. 4233/7639 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 56012 event pairs, 3900 based on Foata normal form. 0/4259 useless extension candidates. Maximal degree in co-relation 15657. Up to 1544 conditions per place. [2023-09-01 07:32:41,327 INFO L137 encePairwiseOnDemand]: 939/947 looper letters, 135 selfloop transitions, 21 changer transitions 0/156 dead transitions. [2023-09-01 07:32:41,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 156 transitions, 754 flow [2023-09-01 07:32:41,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:32:41,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:32:41,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2874 transitions. [2023-09-01 07:32:41,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43354955498566905 [2023-09-01 07:32:41,334 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2874 transitions. [2023-09-01 07:32:41,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2874 transitions. [2023-09-01 07:32:41,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:32:41,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2874 transitions. [2023-09-01 07:32:41,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 410.57142857142856) internal successors, (2874), 7 states have internal predecessors, (2874), 0 states have call successors, (0), 0 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 07:32:41,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 947.0) internal successors, (7576), 8 states have internal predecessors, (7576), 0 states have call successors, (0), 0 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 07:32:41,350 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 947.0) internal successors, (7576), 8 states have internal predecessors, (7576), 0 states have call successors, (0), 0 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 07:32:41,350 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 186 flow. Second operand 7 states and 2874 transitions. [2023-09-01 07:32:41,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 156 transitions, 754 flow [2023-09-01 07:32:41,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 156 transitions, 740 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 07:32:41,353 INFO L231 Difference]: Finished difference. Result has 58 places, 64 transitions, 311 flow [2023-09-01 07:32:41,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=311, PETRI_PLACES=58, PETRI_TRANSITIONS=64} [2023-09-01 07:32:41,354 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-09-01 07:32:41,355 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 64 transitions, 311 flow [2023-09-01 07:32:41,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 390.7142857142857) internal successors, (2735), 7 states have internal predecessors, (2735), 0 states have call successors, (0), 0 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 07:32:41,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:32:41,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:32:41,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-09-01 07:32:41,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:32:41,563 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 07:32:41,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:32:41,564 INFO L85 PathProgramCache]: Analyzing trace with hash 2045520537, now seen corresponding path program 1 times [2023-09-01 07:32:41,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:32:41,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408222984] [2023-09-01 07:32:41,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:32:41,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:32:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:32:41,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:32:41,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:32:41,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408222984] [2023-09-01 07:32:41,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408222984] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:32:41,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:32:41,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:32:41,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255291778] [2023-09-01 07:32:41,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:32:41,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:32:41,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:32:41,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:32:41,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:32:41,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 947 [2023-09-01 07:32:41,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 64 transitions, 311 flow. Second operand has 3 states, 3 states have (on average 391.3333333333333) internal successors, (1174), 3 states have internal predecessors, (1174), 0 states have call successors, (0), 0 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 07:32:41,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:32:41,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 947 [2023-09-01 07:32:41,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:32:42,589 INFO L130 PetriNetUnfolder]: 4209/7607 cut-off events. [2023-09-01 07:32:42,589 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-09-01 07:32:42,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15684 conditions, 7607 events. 4209/7607 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 55954 event pairs, 3900 based on Foata normal form. 8/4287 useless extension candidates. Maximal degree in co-relation 15674. Up to 7592 conditions per place. [2023-09-01 07:32:42,619 INFO L137 encePairwiseOnDemand]: 944/947 looper letters, 55 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-09-01 07:32:42,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 369 flow [2023-09-01 07:32:42,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:32:42,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:32:42,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1202 transitions. [2023-09-01 07:32:42,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230904611052446 [2023-09-01 07:32:42,623 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1202 transitions. [2023-09-01 07:32:42,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1202 transitions. [2023-09-01 07:32:42,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:32:42,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1202 transitions. [2023-09-01 07:32:42,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 400.6666666666667) internal successors, (1202), 3 states have internal predecessors, (1202), 0 states have call successors, (0), 0 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 07:32:42,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 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 07:32:42,631 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 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 07:32:42,631 INFO L175 Difference]: Start difference. First operand has 58 places, 64 transitions, 311 flow. Second operand 3 states and 1202 transitions. [2023-09-01 07:32:42,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 369 flow [2023-09-01 07:32:42,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 56 transitions, 350 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 07:32:42,633 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 240 flow [2023-09-01 07:32:42,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=54, 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=240, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2023-09-01 07:32:42,634 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2023-09-01 07:32:42,634 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 240 flow [2023-09-01 07:32:42,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 391.3333333333333) internal successors, (1174), 3 states have internal predecessors, (1174), 0 states have call successors, (0), 0 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 07:32:42,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:32:42,635 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-09-01 07:32:42,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 07:32:42,635 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 07:32:42,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:32:42,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1108892995, now seen corresponding path program 2 times [2023-09-01 07:32:42,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:32:42,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66042915] [2023-09-01 07:32:42,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:32:42,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:32:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:32:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-09-01 07:32:42,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:32:42,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66042915] [2023-09-01 07:32:42,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66042915] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:32:42,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797713446] [2023-09-01 07:32:42,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:32:42,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:32:42,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:32:42,759 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 07:32:42,761 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 07:32:42,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:32:42,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:32:42,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 07:32:42,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:32:42,884 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-09-01 07:32:42,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:32:42,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797713446] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:32:42,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:32:42,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-09-01 07:32:42,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546071082] [2023-09-01 07:32:42,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:32:42,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:32:42,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:32:42,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:32:42,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:32:42,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 391 out of 947 [2023-09-01 07:32:42,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 393.3333333333333) internal successors, (1180), 3 states have internal predecessors, (1180), 0 states have call successors, (0), 0 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 07:32:42,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:32:42,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 391 of 947 [2023-09-01 07:32:42,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:32:43,782 INFO L130 PetriNetUnfolder]: 4209/7599 cut-off events. [2023-09-01 07:32:43,782 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2023-09-01 07:32:43,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15597 conditions, 7599 events. 4209/7599 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 55827 event pairs, 3900 based on Foata normal form. 8/4283 useless extension candidates. Maximal degree in co-relation 15586. Up to 7584 conditions per place. [2023-09-01 07:32:43,812 INFO L137 encePairwiseOnDemand]: 944/947 looper letters, 53 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2023-09-01 07:32:43,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 54 transitions, 328 flow [2023-09-01 07:32:43,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:32:43,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:32:43,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1206 transitions. [2023-09-01 07:32:43,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4244984160506864 [2023-09-01 07:32:43,815 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1206 transitions. [2023-09-01 07:32:43,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1206 transitions. [2023-09-01 07:32:43,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:32:43,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1206 transitions. [2023-09-01 07:32:43,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 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 07:32:43,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 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 07:32:43,823 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 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 07:32:43,823 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 240 flow. Second operand 3 states and 1206 transitions. [2023-09-01 07:32:43,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 54 transitions, 328 flow [2023-09-01 07:32:43,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 54 transitions, 301 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-09-01 07:32:43,826 INFO L231 Difference]: Finished difference. Result has 51 places, 54 transitions, 195 flow [2023-09-01 07:32:43,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=49, 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=195, PETRI_PLACES=51, PETRI_TRANSITIONS=54} [2023-09-01 07:32:43,826 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-09-01 07:32:43,826 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 54 transitions, 195 flow [2023-09-01 07:32:43,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 393.3333333333333) internal successors, (1180), 3 states have internal predecessors, (1180), 0 states have call successors, (0), 0 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 07:32:43,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:32:43,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:32:43,837 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 07:32:44,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:32:44,033 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 07:32:44,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:32:44,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1976135947, now seen corresponding path program 1 times [2023-09-01 07:32:44,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:32:44,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913761502] [2023-09-01 07:32:44,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:32:44,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:32:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:32:44,148 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 07:32:44,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:32:44,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913761502] [2023-09-01 07:32:44,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913761502] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:32:44,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:32:44,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 07:32:44,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018832259] [2023-09-01 07:32:44,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:32:44,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:32:44,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:32:44,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:32:44,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 07:32:44,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 381 out of 947 [2023-09-01 07:32:44,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 54 transitions, 195 flow. Second operand has 4 states, 4 states have (on average 383.75) internal successors, (1535), 4 states have internal predecessors, (1535), 0 states have call successors, (0), 0 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 07:32:44,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:32:44,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 381 of 947 [2023-09-01 07:32:44,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:32:45,034 INFO L130 PetriNetUnfolder]: 4205/7595 cut-off events. [2023-09-01 07:32:45,034 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-09-01 07:32:45,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15533 conditions, 7595 events. 4205/7595 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 55746 event pairs, 3900 based on Foata normal form. 0/4259 useless extension candidates. Maximal degree in co-relation 15526. Up to 7591 conditions per place. [2023-09-01 07:32:45,063 INFO L137 encePairwiseOnDemand]: 943/947 looper letters, 50 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-09-01 07:32:45,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 53 transitions, 297 flow [2023-09-01 07:32:45,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:32:45,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:32:45,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1557 transitions. [2023-09-01 07:32:45,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41103484688489966 [2023-09-01 07:32:45,067 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1557 transitions. [2023-09-01 07:32:45,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1557 transitions. [2023-09-01 07:32:45,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:32:45,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1557 transitions. [2023-09-01 07:32:45,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 389.25) internal successors, (1557), 4 states have internal predecessors, (1557), 0 states have call successors, (0), 0 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 07:32:45,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 947.0) internal successors, (4735), 5 states have internal predecessors, (4735), 0 states have call successors, (0), 0 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 07:32:45,075 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 947.0) internal successors, (4735), 5 states have internal predecessors, (4735), 0 states have call successors, (0), 0 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 07:32:45,075 INFO L175 Difference]: Start difference. First operand has 51 places, 54 transitions, 195 flow. Second operand 4 states and 1557 transitions. [2023-09-01 07:32:45,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 53 transitions, 297 flow [2023-09-01 07:32:45,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 53 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:32:45,077 INFO L231 Difference]: Finished difference. Result has 53 places, 53 transitions, 196 flow [2023-09-01 07:32:45,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=53, PETRI_TRANSITIONS=53} [2023-09-01 07:32:45,078 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2023-09-01 07:32:45,078 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 196 flow [2023-09-01 07:32:45,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 383.75) internal successors, (1535), 4 states have internal predecessors, (1535), 0 states have call successors, (0), 0 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 07:32:45,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:32:45,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:32:45,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 07:32:45,079 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 07:32:45,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:32:45,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1840415850, now seen corresponding path program 1 times [2023-09-01 07:32:45,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:32:45,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871681872] [2023-09-01 07:32:45,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:32:45,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:32:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:32:45,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 07:32:45,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:32:45,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871681872] [2023-09-01 07:32:45,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871681872] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:32:45,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:32:45,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 07:32:45,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486579236] [2023-09-01 07:32:45,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:32:45,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:32:45,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:32:45,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:32:45,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 07:32:45,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 381 out of 947 [2023-09-01 07:32:45,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 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 07:32:45,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:32:45,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 381 of 947 [2023-09-01 07:32:45,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:32:46,141 INFO L130 PetriNetUnfolder]: 3369/6091 cut-off events. [2023-09-01 07:32:46,141 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-09-01 07:32:46,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12486 conditions, 6091 events. 3369/6091 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 43310 event pairs, 3120 based on Foata normal form. 4/3423 useless extension candidates. Maximal degree in co-relation 12479. Up to 6075 conditions per place. [2023-09-01 07:32:46,163 INFO L137 encePairwiseOnDemand]: 943/947 looper letters, 47 selfloop transitions, 6 changer transitions 0/53 dead transitions. [2023-09-01 07:32:46,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 53 transitions, 302 flow [2023-09-01 07:32:46,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:32:46,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:32:46,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1557 transitions. [2023-09-01 07:32:46,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41103484688489966 [2023-09-01 07:32:46,167 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1557 transitions. [2023-09-01 07:32:46,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1557 transitions. [2023-09-01 07:32:46,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:32:46,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1557 transitions. [2023-09-01 07:32:46,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 389.25) internal successors, (1557), 4 states have internal predecessors, (1557), 0 states have call successors, (0), 0 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 07:32:46,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 947.0) internal successors, (4735), 5 states have internal predecessors, (4735), 0 states have call successors, (0), 0 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 07:32:46,174 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 947.0) internal successors, (4735), 5 states have internal predecessors, (4735), 0 states have call successors, (0), 0 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 07:32:46,174 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 196 flow. Second operand 4 states and 1557 transitions. [2023-09-01 07:32:46,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 53 transitions, 302 flow [2023-09-01 07:32:46,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 53 transitions, 296 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 07:32:46,176 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 209 flow [2023-09-01 07:32:46,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2023-09-01 07:32:46,177 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2023-09-01 07:32:46,177 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 209 flow [2023-09-01 07:32:46,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 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 07:32:46,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:32:46,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:32:46,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 07:32:46,178 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-09-01 07:32:46,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:32:46,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1414178633, now seen corresponding path program 1 times [2023-09-01 07:32:46,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:32:46,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139680440] [2023-09-01 07:32:46,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:32:46,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:32:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:32:47,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:32:47,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:32:47,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139680440] [2023-09-01 07:32:47,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139680440] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:32:47,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129785467] [2023-09-01 07:32:47,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:32:47,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:32:47,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:32:47,152 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 07:32:47,155 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 07:32:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:32:47,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 40 conjunts are in the unsatisfiable core [2023-09-01 07:32:47,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:32:47,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 07:32:47,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 07:32:47,471 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-09-01 07:32:47,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-09-01 07:32:47,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 07:32:47,629 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-09-01 07:32:47,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:32:47,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 07:32:47,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:32:47,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 07:32:47,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:32:47,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 07:32:47,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:32:47,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:33:01,841 WARN L222 SmtUtils]: Spent 13.49s on a formula simplification. DAG size of input: 57 DAG size of output: 39 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 07:33:01,931 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ (* c_~id_3~0 4) c_~get_5~0.offset))) (and (forall ((v_ArrVal_459 (Array Int Int)) (~get_2~0.base Int) (~get_2~0.offset Int) (~contains_key_1~0.offset Int) (~id_0~0 Int) (~contains_key_1~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_459))) (let ((.cse0 (select (select .cse1 ~get_2~0.base) (+ (* ~id_0~0 4) ~get_2~0.offset)))) (or (<= .cse0 0) (< 9223372039002259455 .cse0) (not (= (mod (select (select .cse1 ~contains_key_1~0.base) (+ ~id_0~0 ~contains_key_1~0.offset)) 256) 0)) (<= (select (select .cse1 c_~get_5~0.base) .cse2) (+ 2147483647 .cse0)))))) (forall ((v_ArrVal_459 (Array Int Int)) (~get_2~0.base Int) (~get_2~0.offset Int) (~id_0~0 Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_459))) (let ((.cse3 (select (select .cse4 ~get_2~0.base) (+ (* ~id_0~0 4) ~get_2~0.offset)))) (or (< .cse3 0) (< 0 .cse3) (<= (select (select .cse4 c_~get_5~0.base) .cse2) (+ 2147483647 .cse3)))))))) is different from false [2023-09-01 07:33:02,036 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ (* c_~id_3~0 4) c_~get_5~0.offset))) (and (forall ((v_ArrVal_458 (Array Int Int)) (v_ArrVal_459 (Array Int Int)) (~get_2~0.base Int) (~get_2~0.offset Int) (~id_0~0 Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_458) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_459))) (let ((.cse0 (select (select .cse1 ~get_2~0.base) (+ (* ~id_0~0 4) ~get_2~0.offset)))) (or (< .cse0 0) (<= (select (select .cse1 c_~get_5~0.base) .cse2) (+ .cse0 2147483647)) (< 0 .cse0))))) (forall ((v_ArrVal_458 (Array Int Int)) (v_ArrVal_459 (Array Int Int)) (~get_2~0.base Int) (~get_2~0.offset Int) (~contains_key_1~0.offset Int) (~id_0~0 Int) (~contains_key_1~0.base Int)) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_458) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_459))) (let ((.cse4 (select (select .cse3 ~get_2~0.base) (+ (* ~id_0~0 4) ~get_2~0.offset)))) (or (not (= (mod (select (select .cse3 ~contains_key_1~0.base) (+ ~id_0~0 ~contains_key_1~0.offset)) 256) 0)) (<= .cse4 0) (<= (select (select .cse3 c_~get_5~0.base) .cse2) (+ .cse4 2147483647)) (< 9223372039002259455 .cse4))))))) is different from false [2023-09-01 07:33:02,108 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ (* c_~id_3~0 4) c_~get_5~0.offset))) (and (forall ((v_ArrVal_458 (Array Int Int)) (v_ArrVal_457 (Array Int Int)) (v_ArrVal_459 (Array Int Int)) (~get_2~0.base Int) (~get_2~0.offset Int) (~contains_key_1~0.offset Int) (~id_0~0 Int) (~contains_key_1~0.base Int)) (let ((.cse1 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_457) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_458) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_459))) (let ((.cse0 (select (select .cse1 ~get_2~0.base) (+ (* ~id_0~0 4) ~get_2~0.offset)))) (or (<= .cse0 0) (<= (select (select .cse1 c_~get_5~0.base) .cse2) (+ 2147483647 .cse0)) (< 9223372039002259455 .cse0) (not (= (mod (select (select .cse1 ~contains_key_1~0.base) (+ ~id_0~0 ~contains_key_1~0.offset)) 256) 0)))))) (forall ((v_ArrVal_458 (Array Int Int)) (v_ArrVal_457 (Array Int Int)) (v_ArrVal_459 (Array Int Int)) (~get_2~0.base Int) (~get_2~0.offset Int) (~id_0~0 Int)) (let ((.cse4 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_457) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_458) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_459))) (let ((.cse3 (select (select .cse4 ~get_2~0.base) (+ (* ~id_0~0 4) ~get_2~0.offset)))) (or (< .cse3 0) (<= (select (select .cse4 c_~get_5~0.base) .cse2) (+ 2147483647 .cse3)) (< 0 .cse3))))))) is different from false [2023-09-01 07:33:02,976 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:33:02,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 347 treesize of output 252 [2023-09-01 07:33:03,389 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:33:03,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 2690025 treesize of output 2591626 [2023-09-01 07:33:08,652 WARN L222 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 3260 DAG size of output: 735 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-09-01 07:33:08,716 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:33:08,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 14905 treesize of output 14532 [2023-09-01 07:33:09,079 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:33:09,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 14489 treesize of output 14324 [2023-09-01 07:33:09,368 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:33:09,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 14281 treesize of output 13492 [2023-09-01 07:33:09,692 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:33:09,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 13449 treesize of output 11828 [2023-09-01 07:33:09,937 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:33:09,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11785 treesize of output 11598 [2023-09-01 07:33:10,207 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:33:10,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11581 treesize of output 11190 [2023-09-01 07:33:10,465 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:33:10,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11173 treesize of output 10374 [2023-09-01 07:33:10,714 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:33:10,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 10357 treesize of output 8742 Killed by 15