./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-word-symm.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-word-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 4ca4c99e545bc332635ee8b9969d24118d6fd539f8535aa6ae4c72d296ec330e --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:07:08,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:07:08,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:07:08,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:07:08,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:07:08,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:07:08,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:07:08,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:07:08,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:07:08,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:07:08,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:07:08,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:07:08,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:07:08,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:07:08,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:07:08,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:07:08,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:07:08,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:07:08,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:07:08,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:07:08,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:07:08,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:07:08,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:07:08,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:07:08,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:07:08,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:07:08,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:07:08,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:07:08,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:07:08,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:07:08,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:07:08,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:07:08,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:07:08,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:07:08,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:07:08,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:07:08,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:07:08,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:07:08,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:07:08,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:07:08,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:07:08,511 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:07:08,536 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:07:08,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:07:08,537 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:07:08,537 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:07:08,538 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:07:08,538 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:07:08,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:07:08,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:07:08,539 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:07:08,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:07:08,540 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:07:08,540 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:07:08,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:07:08,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:07:08,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:07:08,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:07:08,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:07:08,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:07:08,541 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:07:08,541 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:07:08,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:07:08,541 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:07:08,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:07:08,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:07:08,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:07:08,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:07:08,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:07:08,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:07:08,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:07:08,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:07:08,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:07:08,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:07:08,543 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:07:08,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:07:08,543 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:07:08,543 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:07:08,544 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:07:08,544 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ca4c99e545bc332635ee8b9969d24118d6fd539f8535aa6ae4c72d296ec330e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:07:08,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:07:08,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:07:08,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:07:08,803 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:07:08,804 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:07:08,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-symm.wvr.c [2023-08-30 11:07:09,671 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:07:09,834 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:07:09,834 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-symm.wvr.c [2023-08-30 11:07:09,839 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7be856af6/a3fb7e3906784b22af667d3ff7af3eec/FLAG605804786 [2023-08-30 11:07:09,848 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7be856af6/a3fb7e3906784b22af667d3ff7af3eec [2023-08-30 11:07:09,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:07:09,852 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:07:09,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:07:09,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:07:09,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:07:09,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:07:09" (1/1) ... [2023-08-30 11:07:09,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@536c6c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:09, skipping insertion in model container [2023-08-30 11:07:09,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:07:09" (1/1) ... [2023-08-30 11:07:09,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:07:09,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:07:10,013 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-word-symm.wvr.c[2848,2861] [2023-08-30 11:07:10,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:07:10,030 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:07:10,063 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-word-symm.wvr.c[2848,2861] [2023-08-30 11:07:10,068 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:07:10,078 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:07:10,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:10 WrapperNode [2023-08-30 11:07:10,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:07:10,080 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:07:10,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:07:10,081 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:07:10,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:10" (1/1) ... [2023-08-30 11:07:10,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:10" (1/1) ... [2023-08-30 11:07:10,121 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 138 [2023-08-30 11:07:10,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:07:10,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:07:10,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:07:10,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:07:10,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:10" (1/1) ... [2023-08-30 11:07:10,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:10" (1/1) ... [2023-08-30 11:07:10,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:10" (1/1) ... [2023-08-30 11:07:10,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:10" (1/1) ... [2023-08-30 11:07:10,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:10" (1/1) ... [2023-08-30 11:07:10,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:10" (1/1) ... [2023-08-30 11:07:10,159 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:10" (1/1) ... [2023-08-30 11:07:10,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:10" (1/1) ... [2023-08-30 11:07:10,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:07:10,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:07:10,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:07:10,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:07:10,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:10" (1/1) ... [2023-08-30 11:07:10,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:07:10,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:07:10,190 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 11:07:10,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 11:07:10,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:07:10,257 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:07:10,257 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:07:10,258 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:07:10,259 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:07:10,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:07:10,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:07:10,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:07:10,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:07:10,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:07:10,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:07:10,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:07:10,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:07:10,260 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 11:07:10,347 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:07:10,349 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:07:10,642 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:07:10,662 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:07:10,665 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 11:07:10,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:07:10 BoogieIcfgContainer [2023-08-30 11:07:10,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:07:10,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:07:10,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:07:10,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:07:10,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:07:09" (1/3) ... [2023-08-30 11:07:10,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b92914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:07:10, skipping insertion in model container [2023-08-30 11:07:10,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:10" (2/3) ... [2023-08-30 11:07:10,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b92914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:07:10, skipping insertion in model container [2023-08-30 11:07:10,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:07:10" (3/3) ... [2023-08-30 11:07:10,684 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2023-08-30 11:07:10,689 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:07:10,695 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:07:10,696 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-30 11:07:10,696 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:07:10,795 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 11:07:10,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 235 transitions, 486 flow [2023-08-30 11:07:10,896 INFO L130 PetriNetUnfolder]: 21/233 cut-off events. [2023-08-30 11:07:10,897 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:07:10,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 233 events. 21/233 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 340 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 162. Up to 3 conditions per place. [2023-08-30 11:07:10,902 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 235 transitions, 486 flow [2023-08-30 11:07:10,905 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 205 transitions, 419 flow [2023-08-30 11:07:10,909 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:07:10,918 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 194 places, 205 transitions, 419 flow [2023-08-30 11:07:10,920 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 194 places, 205 transitions, 419 flow [2023-08-30 11:07:10,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 205 transitions, 419 flow [2023-08-30 11:07:10,968 INFO L130 PetriNetUnfolder]: 18/205 cut-off events. [2023-08-30 11:07:10,969 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 11:07:10,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 205 events. 18/205 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 328 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 162. Up to 3 conditions per place. [2023-08-30 11:07:10,974 INFO L119 LiptonReduction]: Number of co-enabled transitions 4028 [2023-08-30 11:07:16,080 INFO L134 LiptonReduction]: Checked pairs total: 5000 [2023-08-30 11:07:16,081 INFO L136 LiptonReduction]: Total number of compositions: 225 [2023-08-30 11:07:16,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:07:16,094 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;@2db257aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:07:16,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-30 11:07:16,096 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:07:16,096 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:07:16,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:16,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:07:16,096 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 11:07:16,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:16,099 INFO L85 PathProgramCache]: Analyzing trace with hash 28505, now seen corresponding path program 1 times [2023-08-30 11:07:16,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:16,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664699002] [2023-08-30 11:07:16,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:16,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:16,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:16,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:16,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664699002] [2023-08-30 11:07:16,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664699002] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:07:16,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:07:16,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:07:16,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117515175] [2023-08-30 11:07:16,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:07:16,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:07:16,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:16,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:07:16,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:07:16,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 460 [2023-08-30 11:07:16,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:16,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:16,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 460 [2023-08-30 11:07:16,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:16,471 INFO L130 PetriNetUnfolder]: 601/975 cut-off events. [2023-08-30 11:07:16,471 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2023-08-30 11:07:16,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1996 conditions, 975 events. 601/975 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4465 event pairs, 414 based on Foata normal form. 0/471 useless extension candidates. Maximal degree in co-relation 912. Up to 483 conditions per place. [2023-08-30 11:07:16,476 INFO L137 encePairwiseOnDemand]: 452/460 looper letters, 61 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2023-08-30 11:07:16,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 66 transitions, 280 flow [2023-08-30 11:07:16,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:07:16,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:07:16,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 708 transitions. [2023-08-30 11:07:16,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130434782608696 [2023-08-30 11:07:16,488 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 708 transitions. [2023-08-30 11:07:16,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 708 transitions. [2023-08-30 11:07:16,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:16,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 708 transitions. [2023-08-30 11:07:16,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:16,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:16,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:16,504 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 81 flow. Second operand 3 states and 708 transitions. [2023-08-30 11:07:16,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 66 transitions, 280 flow [2023-08-30 11:07:16,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 66 transitions, 270 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 11:07:16,509 INFO L231 Difference]: Finished difference. Result has 37 places, 39 transitions, 112 flow [2023-08-30 11:07:16,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=37, PETRI_TRANSITIONS=39} [2023-08-30 11:07:16,512 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2023-08-30 11:07:16,512 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 39 transitions, 112 flow [2023-08-30 11:07:16,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:16,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:16,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:07:16,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:07:16,515 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 11:07:16,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:16,517 INFO L85 PathProgramCache]: Analyzing trace with hash 884911, now seen corresponding path program 1 times [2023-08-30 11:07:16,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:16,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651483359] [2023-08-30 11:07:16,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:16,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:16,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:16,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:16,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651483359] [2023-08-30 11:07:16,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651483359] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:07:16,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149244060] [2023-08-30 11:07:16,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:16,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:07:16,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:07:16,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:07:16,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 11:07:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:16,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:07:16,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:07:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:16,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:07:16,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149244060] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:07:16,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:07:16,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 11:07:16,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777417286] [2023-08-30 11:07:16,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:07:16,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:07:16,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:16,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:07:16,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:07:16,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 460 [2023-08-30 11:07:16,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 39 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:16,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:16,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 460 [2023-08-30 11:07:16,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:16,908 INFO L130 PetriNetUnfolder]: 601/973 cut-off events. [2023-08-30 11:07:16,908 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-30 11:07:16,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1989 conditions, 973 events. 601/973 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4352 event pairs, 414 based on Foata normal form. 0/475 useless extension candidates. Maximal degree in co-relation 983. Up to 480 conditions per place. [2023-08-30 11:07:16,913 INFO L137 encePairwiseOnDemand]: 454/460 looper letters, 59 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-08-30 11:07:16,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 64 transitions, 288 flow [2023-08-30 11:07:16,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:07:16,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:07:16,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 917 transitions. [2023-08-30 11:07:16,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4983695652173913 [2023-08-30 11:07:16,916 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 917 transitions. [2023-08-30 11:07:16,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 917 transitions. [2023-08-30 11:07:16,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:16,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 917 transitions. [2023-08-30 11:07:16,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 229.25) internal successors, (917), 4 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:16,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 460.0) internal successors, (2300), 5 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:16,921 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 460.0) internal successors, (2300), 5 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:16,921 INFO L175 Difference]: Start difference. First operand has 37 places, 39 transitions, 112 flow. Second operand 4 states and 917 transitions. [2023-08-30 11:07:16,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 64 transitions, 288 flow [2023-08-30 11:07:16,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 64 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:07:16,923 INFO L231 Difference]: Finished difference. Result has 36 places, 37 transitions, 104 flow [2023-08-30 11:07:16,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=36, PETRI_TRANSITIONS=37} [2023-08-30 11:07:16,924 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-08-30 11:07:16,924 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 37 transitions, 104 flow [2023-08-30 11:07:16,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:16,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:16,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:07:16,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 11:07:17,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:07:17,132 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 11:07:17,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:17,132 INFO L85 PathProgramCache]: Analyzing trace with hash 884912, now seen corresponding path program 1 times [2023-08-30 11:07:17,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:17,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031645537] [2023-08-30 11:07:17,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:17,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:17,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:17,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:17,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031645537] [2023-08-30 11:07:17,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031645537] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:07:17,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021523643] [2023-08-30 11:07:17,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:17,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:07:17,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:07:17,208 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:07:17,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 11:07:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:17,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:07:17,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:07:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:17,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:07:17,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:17,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021523643] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:07:17,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:07:17,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:07:17,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813126544] [2023-08-30 11:07:17,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:07:17,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:07:17,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:17,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:07:17,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:07:17,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 460 [2023-08-30 11:07:17,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 104 flow. Second operand has 7 states, 7 states have (on average 214.14285714285714) internal successors, (1499), 7 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:17,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:17,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 460 [2023-08-30 11:07:17,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:17,605 INFO L130 PetriNetUnfolder]: 1501/2428 cut-off events. [2023-08-30 11:07:17,605 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-30 11:07:17,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4950 conditions, 2428 events. 1501/2428 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 12437 event pairs, 1035 based on Foata normal form. 0/1198 useless extension candidates. Maximal degree in co-relation 3923. Up to 481 conditions per place. [2023-08-30 11:07:17,614 INFO L137 encePairwiseOnDemand]: 454/460 looper letters, 140 selfloop transitions, 13 changer transitions 0/154 dead transitions. [2023-08-30 11:07:17,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 154 transitions, 684 flow [2023-08-30 11:07:17,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:07:17,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:07:17,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1437 transitions. [2023-08-30 11:07:17,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5206521739130435 [2023-08-30 11:07:17,617 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1437 transitions. [2023-08-30 11:07:17,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1437 transitions. [2023-08-30 11:07:17,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:17,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1437 transitions. [2023-08-30 11:07:17,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 239.5) internal successors, (1437), 6 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:17,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 460.0) internal successors, (3220), 7 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:17,625 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 460.0) internal successors, (3220), 7 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:17,625 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 104 flow. Second operand 6 states and 1437 transitions. [2023-08-30 11:07:17,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 154 transitions, 684 flow [2023-08-30 11:07:17,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 154 transitions, 676 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:07:17,627 INFO L231 Difference]: Finished difference. Result has 42 places, 46 transitions, 195 flow [2023-08-30 11:07:17,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=195, PETRI_PLACES=42, PETRI_TRANSITIONS=46} [2023-08-30 11:07:17,628 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2023-08-30 11:07:17,628 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 46 transitions, 195 flow [2023-08-30 11:07:17,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 214.14285714285714) internal successors, (1499), 7 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:17,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:17,629 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:07:17,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 11:07:17,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-30 11:07:17,834 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 11:07:17,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:17,835 INFO L85 PathProgramCache]: Analyzing trace with hash 593827034, now seen corresponding path program 2 times [2023-08-30 11:07:17,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:17,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930185766] [2023-08-30 11:07:17,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:17,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:17,931 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:17,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:17,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930185766] [2023-08-30 11:07:17,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930185766] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:07:17,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064144481] [2023-08-30 11:07:17,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:07:17,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:07:17,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:07:17,934 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:07:17,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 11:07:17,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:07:17,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:07:17,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:07:17,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:07:17,999 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:07:17,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:07:18,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064144481] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:07:18,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:07:18,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:07:18,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905298235] [2023-08-30 11:07:18,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:07:18,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:07:18,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:18,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:07:18,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:07:18,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 460 [2023-08-30 11:07:18,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 46 transitions, 195 flow. Second operand has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:18,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:18,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 460 [2023-08-30 11:07:18,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:18,201 INFO L130 PetriNetUnfolder]: 1501/2427 cut-off events. [2023-08-30 11:07:18,201 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-08-30 11:07:18,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4972 conditions, 2427 events. 1501/2427 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 13017 event pairs, 1035 based on Foata normal form. 1/1168 useless extension candidates. Maximal degree in co-relation 3933. Up to 2382 conditions per place. [2023-08-30 11:07:18,209 INFO L137 encePairwiseOnDemand]: 457/460 looper letters, 38 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2023-08-30 11:07:18,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 273 flow [2023-08-30 11:07:18,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:07:18,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:07:18,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 678 transitions. [2023-08-30 11:07:18,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49130434782608695 [2023-08-30 11:07:18,211 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 678 transitions. [2023-08-30 11:07:18,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 678 transitions. [2023-08-30 11:07:18,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:18,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 678 transitions. [2023-08-30 11:07:18,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:18,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:18,216 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:18,216 INFO L175 Difference]: Start difference. First operand has 42 places, 46 transitions, 195 flow. Second operand 3 states and 678 transitions. [2023-08-30 11:07:18,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 273 flow [2023-08-30 11:07:18,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 254 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 11:07:18,220 INFO L231 Difference]: Finished difference. Result has 42 places, 45 transitions, 178 flow [2023-08-30 11:07:18,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=42, PETRI_TRANSITIONS=45} [2023-08-30 11:07:18,221 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2023-08-30 11:07:18,222 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 45 transitions, 178 flow [2023-08-30 11:07:18,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:18,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:18,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:07:18,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 11:07:18,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:07:18,430 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 11:07:18,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:18,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1919050114, now seen corresponding path program 1 times [2023-08-30 11:07:18,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:18,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063806394] [2023-08-30 11:07:18,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:18,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:18,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:18,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:18,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063806394] [2023-08-30 11:07:18,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063806394] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:07:18,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:07:18,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:07:18,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429576336] [2023-08-30 11:07:18,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:07:18,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:07:18,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:18,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:07:18,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:07:18,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 460 [2023-08-30 11:07:18,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 45 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 204.4) internal successors, (1022), 5 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:18,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:18,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 460 [2023-08-30 11:07:18,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:18,901 INFO L130 PetriNetUnfolder]: 1427/2317 cut-off events. [2023-08-30 11:07:18,903 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-08-30 11:07:18,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4746 conditions, 2317 events. 1427/2317 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 12274 event pairs, 795 based on Foata normal form. 0/1167 useless extension candidates. Maximal degree in co-relation 4690. Up to 1527 conditions per place. [2023-08-30 11:07:18,910 INFO L137 encePairwiseOnDemand]: 452/460 looper letters, 82 selfloop transitions, 10 changer transitions 0/93 dead transitions. [2023-08-30 11:07:18,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 93 transitions, 465 flow [2023-08-30 11:07:18,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:07:18,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:07:18,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1303 transitions. [2023-08-30 11:07:18,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4721014492753623 [2023-08-30 11:07:18,913 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1303 transitions. [2023-08-30 11:07:18,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1303 transitions. [2023-08-30 11:07:18,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:18,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1303 transitions. [2023-08-30 11:07:18,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 217.16666666666666) internal successors, (1303), 6 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:18,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 460.0) internal successors, (3220), 7 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:18,921 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 460.0) internal successors, (3220), 7 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:18,921 INFO L175 Difference]: Start difference. First operand has 42 places, 45 transitions, 178 flow. Second operand 6 states and 1303 transitions. [2023-08-30 11:07:18,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 93 transitions, 465 flow [2023-08-30 11:07:18,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 93 transitions, 453 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:07:18,924 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 220 flow [2023-08-30 11:07:18,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2023-08-30 11:07:18,926 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2023-08-30 11:07:18,926 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 220 flow [2023-08-30 11:07:18,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 204.4) internal successors, (1022), 5 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:18,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:18,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:07:18,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 11:07:18,927 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 11:07:18,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:18,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1919050216, now seen corresponding path program 1 times [2023-08-30 11:07:18,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:18,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153065604] [2023-08-30 11:07:18,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:18,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:18,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:18,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:18,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153065604] [2023-08-30 11:07:18,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153065604] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:07:18,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:07:18,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:07:18,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410174351] [2023-08-30 11:07:18,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:07:18,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:07:18,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:18,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:07:18,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:07:19,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 460 [2023-08-30 11:07:19,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:19,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:19,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 460 [2023-08-30 11:07:19,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:19,366 INFO L130 PetriNetUnfolder]: 2484/3939 cut-off events. [2023-08-30 11:07:19,367 INFO L131 PetriNetUnfolder]: For 1149/1149 co-relation queries the response was YES. [2023-08-30 11:07:19,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8872 conditions, 3939 events. 2484/3939 cut-off events. For 1149/1149 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 22146 event pairs, 1540 based on Foata normal form. 166/2603 useless extension candidates. Maximal degree in co-relation 6493. Up to 1943 conditions per place. [2023-08-30 11:07:19,381 INFO L137 encePairwiseOnDemand]: 453/460 looper letters, 74 selfloop transitions, 5 changer transitions 0/80 dead transitions. [2023-08-30 11:07:19,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 80 transitions, 492 flow [2023-08-30 11:07:19,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:07:19,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:07:19,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 883 transitions. [2023-08-30 11:07:19,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47989130434782606 [2023-08-30 11:07:19,383 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 883 transitions. [2023-08-30 11:07:19,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 883 transitions. [2023-08-30 11:07:19,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:19,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 883 transitions. [2023-08-30 11:07:19,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 220.75) internal successors, (883), 4 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:19,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 460.0) internal successors, (2300), 5 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:19,387 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 460.0) internal successors, (2300), 5 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:19,388 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 220 flow. Second operand 4 states and 883 transitions. [2023-08-30 11:07:19,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 80 transitions, 492 flow [2023-08-30 11:07:19,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 80 transitions, 482 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 11:07:19,390 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 253 flow [2023-08-30 11:07:19,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=253, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2023-08-30 11:07:19,391 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2023-08-30 11:07:19,391 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 253 flow [2023-08-30 11:07:19,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:19,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:19,392 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 11:07:19,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 11:07:19,392 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 11:07:19,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:19,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1920641260, now seen corresponding path program 1 times [2023-08-30 11:07:19,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:19,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451836268] [2023-08-30 11:07:19,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:19,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:19,444 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:19,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:19,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451836268] [2023-08-30 11:07:19,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451836268] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:07:19,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617227546] [2023-08-30 11:07:19,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:19,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:07:19,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:07:19,446 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:07:19,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 11:07:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:19,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 11:07:19,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:07:19,523 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:19,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:07:19,560 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:19,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617227546] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:07:19,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:07:19,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 11:07:19,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150477082] [2023-08-30 11:07:19,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:07:19,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:07:19,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:19,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:07:19,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:07:19,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 460 [2023-08-30 11:07:19,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 253 flow. Second operand has 13 states, 13 states have (on average 214.15384615384616) internal successors, (2784), 13 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:19,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:19,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 460 [2023-08-30 11:07:19,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:20,489 INFO L130 PetriNetUnfolder]: 5562/8799 cut-off events. [2023-08-30 11:07:20,490 INFO L131 PetriNetUnfolder]: For 5534/5534 co-relation queries the response was YES. [2023-08-30 11:07:20,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21253 conditions, 8799 events. 5562/8799 cut-off events. For 5534/5534 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 52636 event pairs, 3436 based on Foata normal form. 12/5521 useless extension candidates. Maximal degree in co-relation 15244. Up to 1174 conditions per place. [2023-08-30 11:07:20,545 INFO L137 encePairwiseOnDemand]: 455/460 looper letters, 339 selfloop transitions, 31 changer transitions 0/371 dead transitions. [2023-08-30 11:07:20,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 371 transitions, 2217 flow [2023-08-30 11:07:20,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 11:07:20,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 11:07:20,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2892 transitions. [2023-08-30 11:07:20,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5239130434782608 [2023-08-30 11:07:20,551 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2892 transitions. [2023-08-30 11:07:20,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2892 transitions. [2023-08-30 11:07:20,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:20,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2892 transitions. [2023-08-30 11:07:20,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 241.0) internal successors, (2892), 12 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:20,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 460.0) internal successors, (5980), 13 states have internal predecessors, (5980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:20,562 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 460.0) internal successors, (5980), 13 states have internal predecessors, (5980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:20,562 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 253 flow. Second operand 12 states and 2892 transitions. [2023-08-30 11:07:20,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 371 transitions, 2217 flow [2023-08-30 11:07:20,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 371 transitions, 2160 flow, removed 22 selfloop flow, removed 1 redundant places. [2023-08-30 11:07:20,573 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 460 flow [2023-08-30 11:07:20,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=460, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2023-08-30 11:07:20,574 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-08-30 11:07:20,574 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 460 flow [2023-08-30 11:07:20,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 214.15384615384616) internal successors, (2784), 13 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:20,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:20,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:07:20,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 11:07:20,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:07:20,780 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 11:07:20,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:20,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1919050000, now seen corresponding path program 1 times [2023-08-30 11:07:20,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:20,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583078461] [2023-08-30 11:07:20,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:20,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:20,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:20,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:20,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583078461] [2023-08-30 11:07:20,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583078461] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:07:20,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:07:20,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:07:20,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782481272] [2023-08-30 11:07:20,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:07:20,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:07:20,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:20,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:07:20,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:07:20,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 460 [2023-08-30 11:07:20,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 460 flow. Second operand has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:20,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:20,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 460 [2023-08-30 11:07:20,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:21,877 INFO L130 PetriNetUnfolder]: 9281/15018 cut-off events. [2023-08-30 11:07:21,877 INFO L131 PetriNetUnfolder]: For 7895/7895 co-relation queries the response was YES. [2023-08-30 11:07:21,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35649 conditions, 15018 events. 9281/15018 cut-off events. For 7895/7895 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 103894 event pairs, 3436 based on Foata normal form. 0/9900 useless extension candidates. Maximal degree in co-relation 28969. Up to 8624 conditions per place. [2023-08-30 11:07:21,940 INFO L137 encePairwiseOnDemand]: 456/460 looper letters, 90 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2023-08-30 11:07:21,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 93 transitions, 741 flow [2023-08-30 11:07:21,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:07:21,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:07:21,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 706 transitions. [2023-08-30 11:07:21,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115942028985507 [2023-08-30 11:07:21,942 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 706 transitions. [2023-08-30 11:07:21,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 706 transitions. [2023-08-30 11:07:21,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:21,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 706 transitions. [2023-08-30 11:07:21,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:21,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:21,945 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:21,946 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 460 flow. Second operand 3 states and 706 transitions. [2023-08-30 11:07:21,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 93 transitions, 741 flow [2023-08-30 11:07:21,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 93 transitions, 651 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-08-30 11:07:21,956 INFO L231 Difference]: Finished difference. Result has 67 places, 69 transitions, 384 flow [2023-08-30 11:07:21,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=67, PETRI_TRANSITIONS=69} [2023-08-30 11:07:21,957 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 31 predicate places. [2023-08-30 11:07:21,957 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 69 transitions, 384 flow [2023-08-30 11:07:21,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:21,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:21,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:07:21,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 11:07:21,958 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 11:07:21,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:21,958 INFO L85 PathProgramCache]: Analyzing trace with hash -591253449, now seen corresponding path program 1 times [2023-08-30 11:07:21,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:21,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34698396] [2023-08-30 11:07:21,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:21,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:22,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:22,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:22,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34698396] [2023-08-30 11:07:22,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34698396] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:07:22,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330015147] [2023-08-30 11:07:22,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:22,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:07:22,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:07:22,031 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:07:22,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 11:07:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:22,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:07:22,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:07:22,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:07:22,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:07:22,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330015147] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:07:22,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:07:22,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-30 11:07:22,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885611964] [2023-08-30 11:07:22,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:07:22,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:07:22,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:22,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:07:22,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:07:22,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 460 [2023-08-30 11:07:22,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 69 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:22,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:22,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 460 [2023-08-30 11:07:22,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:22,894 INFO L130 PetriNetUnfolder]: 6667/10662 cut-off events. [2023-08-30 11:07:22,894 INFO L131 PetriNetUnfolder]: For 8481/8481 co-relation queries the response was YES. [2023-08-30 11:07:22,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25218 conditions, 10662 events. 6667/10662 cut-off events. For 8481/8481 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 66806 event pairs, 4239 based on Foata normal form. 1000/8450 useless extension candidates. Maximal degree in co-relation 22969. Up to 10530 conditions per place. [2023-08-30 11:07:22,931 INFO L137 encePairwiseOnDemand]: 456/460 looper letters, 62 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-08-30 11:07:22,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 476 flow [2023-08-30 11:07:22,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:07:22,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:07:22,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 677 transitions. [2023-08-30 11:07:22,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4905797101449275 [2023-08-30 11:07:22,933 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 677 transitions. [2023-08-30 11:07:22,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 677 transitions. [2023-08-30 11:07:22,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:22,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 677 transitions. [2023-08-30 11:07:22,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:22,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:22,937 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:22,937 INFO L175 Difference]: Start difference. First operand has 67 places, 69 transitions, 384 flow. Second operand 3 states and 677 transitions. [2023-08-30 11:07:22,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 476 flow [2023-08-30 11:07:22,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 64 transitions, 467 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 11:07:22,945 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 343 flow [2023-08-30 11:07:22,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=343, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2023-08-30 11:07:22,946 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 25 predicate places. [2023-08-30 11:07:22,946 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 343 flow [2023-08-30 11:07:22,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:22,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:22,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:07:22,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 11:07:23,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:07:23,154 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 11:07:23,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:23,155 INFO L85 PathProgramCache]: Analyzing trace with hash -637678429, now seen corresponding path program 1 times [2023-08-30 11:07:23,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:23,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364403782] [2023-08-30 11:07:23,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:23,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:23,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:23,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:23,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364403782] [2023-08-30 11:07:23,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364403782] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:07:23,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:07:23,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:07:23,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054710690] [2023-08-30 11:07:23,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:07:23,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:07:23,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:23,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:07:23,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:07:23,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 460 [2023-08-30 11:07:23,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 343 flow. Second operand has 3 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:23,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:23,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 460 [2023-08-30 11:07:23,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:24,299 INFO L130 PetriNetUnfolder]: 9560/15557 cut-off events. [2023-08-30 11:07:24,299 INFO L131 PetriNetUnfolder]: For 2943/2943 co-relation queries the response was YES. [2023-08-30 11:07:24,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36484 conditions, 15557 events. 9560/15557 cut-off events. For 2943/2943 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 107967 event pairs, 4239 based on Foata normal form. 0/11333 useless extension candidates. Maximal degree in co-relation 36461. Up to 10531 conditions per place. [2023-08-30 11:07:24,354 INFO L137 encePairwiseOnDemand]: 457/460 looper letters, 81 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-08-30 11:07:24,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 84 transitions, 578 flow [2023-08-30 11:07:24,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:07:24,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:07:24,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 698 transitions. [2023-08-30 11:07:24,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057971014492754 [2023-08-30 11:07:24,356 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 698 transitions. [2023-08-30 11:07:24,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 698 transitions. [2023-08-30 11:07:24,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:24,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 698 transitions. [2023-08-30 11:07:24,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:24,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:24,360 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:24,360 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 343 flow. Second operand 3 states and 698 transitions. [2023-08-30 11:07:24,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 84 transitions, 578 flow [2023-08-30 11:07:24,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 84 transitions, 577 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:07:24,365 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 354 flow [2023-08-30 11:07:24,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2023-08-30 11:07:24,366 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2023-08-30 11:07:24,366 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 354 flow [2023-08-30 11:07:24,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:24,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:24,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:07:24,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 11:07:24,367 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 11:07:24,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:24,367 INFO L85 PathProgramCache]: Analyzing trace with hash 127448658, now seen corresponding path program 1 times [2023-08-30 11:07:24,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:24,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182852892] [2023-08-30 11:07:24,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:24,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:24,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:24,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:24,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182852892] [2023-08-30 11:07:24,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182852892] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:07:24,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535414343] [2023-08-30 11:07:24,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:24,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:07:24,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:07:24,426 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:07:24,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 11:07:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:24,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:07:24,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:07:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:07:24,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:07:24,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535414343] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:07:24,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:07:24,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 11:07:24,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875268416] [2023-08-30 11:07:24,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:07:24,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:07:24,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:24,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:07:24,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:07:24,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 460 [2023-08-30 11:07:24,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:24,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:24,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 460 [2023-08-30 11:07:24,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:25,432 INFO L130 PetriNetUnfolder]: 7866/12807 cut-off events. [2023-08-30 11:07:25,432 INFO L131 PetriNetUnfolder]: For 5363/5363 co-relation queries the response was YES. [2023-08-30 11:07:25,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30853 conditions, 12807 events. 7866/12807 cut-off events. For 5363/5363 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 85253 event pairs, 5302 based on Foata normal form. 968/11707 useless extension candidates. Maximal degree in co-relation 30829. Up to 12443 conditions per place. [2023-08-30 11:07:25,473 INFO L137 encePairwiseOnDemand]: 456/460 looper letters, 48 selfloop transitions, 12 changer transitions 0/61 dead transitions. [2023-08-30 11:07:25,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 448 flow [2023-08-30 11:07:25,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:07:25,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:07:25,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 881 transitions. [2023-08-30 11:07:25,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47880434782608694 [2023-08-30 11:07:25,476 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 881 transitions. [2023-08-30 11:07:25,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 881 transitions. [2023-08-30 11:07:25,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:25,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 881 transitions. [2023-08-30 11:07:25,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 220.25) internal successors, (881), 4 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:25,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 460.0) internal successors, (2300), 5 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:25,480 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 460.0) internal successors, (2300), 5 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:25,480 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 354 flow. Second operand 4 states and 881 transitions. [2023-08-30 11:07:25,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 448 flow [2023-08-30 11:07:25,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 61 transitions, 441 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 11:07:25,500 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 345 flow [2023-08-30 11:07:25,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=345, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2023-08-30 11:07:25,500 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2023-08-30 11:07:25,501 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 345 flow [2023-08-30 11:07:25,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:25,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:25,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:07:25,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 11:07:25,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:07:25,706 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 11:07:25,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:25,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1706806790, now seen corresponding path program 1 times [2023-08-30 11:07:25,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:25,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058321927] [2023-08-30 11:07:25,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:25,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:25,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:25,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:25,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058321927] [2023-08-30 11:07:25,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058321927] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:07:25,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:07:25,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:07:25,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717954357] [2023-08-30 11:07:25,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:07:25,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:07:25,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:25,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:07:25,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:07:25,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 460 [2023-08-30 11:07:25,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 345 flow. Second operand has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:25,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:25,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 460 [2023-08-30 11:07:25,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:26,460 INFO L130 PetriNetUnfolder]: 7206/12059 cut-off events. [2023-08-30 11:07:26,460 INFO L131 PetriNetUnfolder]: For 1628/1628 co-relation queries the response was YES. [2023-08-30 11:07:26,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28132 conditions, 12059 events. 7206/12059 cut-off events. For 1628/1628 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 84549 event pairs, 1694 based on Foata normal form. 0/10827 useless extension candidates. Maximal degree in co-relation 28110. Up to 7612 conditions per place. [2023-08-30 11:07:26,489 INFO L137 encePairwiseOnDemand]: 458/460 looper letters, 58 selfloop transitions, 1 changer transitions 15/74 dead transitions. [2023-08-30 11:07:26,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 74 transitions, 526 flow [2023-08-30 11:07:26,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:07:26,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:07:26,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 691 transitions. [2023-08-30 11:07:26,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5007246376811594 [2023-08-30 11:07:26,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 691 transitions. [2023-08-30 11:07:26,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 691 transitions. [2023-08-30 11:07:26,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:26,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 691 transitions. [2023-08-30 11:07:26,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:26,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:26,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:26,498 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 345 flow. Second operand 3 states and 691 transitions. [2023-08-30 11:07:26,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 74 transitions, 526 flow [2023-08-30 11:07:26,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 74 transitions, 513 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:07:26,510 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 313 flow [2023-08-30 11:07:26,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2023-08-30 11:07:26,511 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2023-08-30 11:07:26,511 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 313 flow [2023-08-30 11:07:26,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:26,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:26,512 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:07:26,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 11:07:26,512 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 11:07:26,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:26,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1666121501, now seen corresponding path program 1 times [2023-08-30 11:07:26,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:26,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649588213] [2023-08-30 11:07:26,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:26,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:26,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:07:26,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:26,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649588213] [2023-08-30 11:07:26,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649588213] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:07:26,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:07:26,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 11:07:26,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727071293] [2023-08-30 11:07:26,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:07:26,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:07:26,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:26,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:07:26,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:07:26,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 460 [2023-08-30 11:07:26,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 313 flow. Second operand has 5 states, 5 states have (on average 207.8) internal successors, (1039), 5 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:26,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:26,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 460 [2023-08-30 11:07:26,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:26,904 INFO L130 PetriNetUnfolder]: 1860/3303 cut-off events. [2023-08-30 11:07:26,904 INFO L131 PetriNetUnfolder]: For 1280/1280 co-relation queries the response was YES. [2023-08-30 11:07:26,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8705 conditions, 3303 events. 1860/3303 cut-off events. For 1280/1280 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 19226 event pairs, 1298 based on Foata normal form. 154/3149 useless extension candidates. Maximal degree in co-relation 8684. Up to 2674 conditions per place. [2023-08-30 11:07:26,914 INFO L137 encePairwiseOnDemand]: 455/460 looper letters, 61 selfloop transitions, 3 changer transitions 20/84 dead transitions. [2023-08-30 11:07:26,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 84 transitions, 636 flow [2023-08-30 11:07:26,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:07:26,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:07:26,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1071 transitions. [2023-08-30 11:07:26,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656521739130435 [2023-08-30 11:07:26,917 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1071 transitions. [2023-08-30 11:07:26,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1071 transitions. [2023-08-30 11:07:26,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:26,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1071 transitions. [2023-08-30 11:07:26,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 214.2) internal successors, (1071), 5 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:26,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 460.0) internal successors, (2760), 6 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:26,923 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 460.0) internal successors, (2760), 6 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:26,923 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 313 flow. Second operand 5 states and 1071 transitions. [2023-08-30 11:07:26,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 84 transitions, 636 flow [2023-08-30 11:07:26,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 84 transitions, 633 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:07:26,928 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 323 flow [2023-08-30 11:07:26,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=323, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2023-08-30 11:07:26,929 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2023-08-30 11:07:26,929 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 323 flow [2023-08-30 11:07:26,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 207.8) internal successors, (1039), 5 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:26,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:26,929 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:07:26,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 11:07:26,930 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 11:07:26,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:26,930 INFO L85 PathProgramCache]: Analyzing trace with hash -2076057337, now seen corresponding path program 1 times [2023-08-30 11:07:26,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:26,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105456195] [2023-08-30 11:07:26,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:26,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:07:26,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:26,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105456195] [2023-08-30 11:07:26,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105456195] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:07:26,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:07:26,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 11:07:26,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296823120] [2023-08-30 11:07:26,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:07:26,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:07:26,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:26,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:07:26,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:07:27,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 460 [2023-08-30 11:07:27,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 323 flow. Second operand has 5 states, 5 states have (on average 208.0) internal successors, (1040), 5 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:27,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:27,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 460 [2023-08-30 11:07:27,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:27,389 INFO L130 PetriNetUnfolder]: 1526/2745 cut-off events. [2023-08-30 11:07:27,389 INFO L131 PetriNetUnfolder]: For 1042/1042 co-relation queries the response was YES. [2023-08-30 11:07:27,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7658 conditions, 2745 events. 1526/2745 cut-off events. For 1042/1042 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 15437 event pairs, 1190 based on Foata normal form. 14/2479 useless extension candidates. Maximal degree in co-relation 7634. Up to 2657 conditions per place. [2023-08-30 11:07:27,397 INFO L137 encePairwiseOnDemand]: 455/460 looper letters, 39 selfloop transitions, 12 changer transitions 19/70 dead transitions. [2023-08-30 11:07:27,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 70 transitions, 522 flow [2023-08-30 11:07:27,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:07:27,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:07:27,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1068 transitions. [2023-08-30 11:07:27,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643478260869565 [2023-08-30 11:07:27,400 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1068 transitions. [2023-08-30 11:07:27,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1068 transitions. [2023-08-30 11:07:27,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:27,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1068 transitions. [2023-08-30 11:07:27,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 213.6) internal successors, (1068), 5 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:27,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 460.0) internal successors, (2760), 6 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:27,405 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 460.0) internal successors, (2760), 6 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:27,405 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 323 flow. Second operand 5 states and 1068 transitions. [2023-08-30 11:07:27,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 70 transitions, 522 flow [2023-08-30 11:07:27,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 70 transitions, 515 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 11:07:27,410 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 339 flow [2023-08-30 11:07:27,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=339, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2023-08-30 11:07:27,411 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2023-08-30 11:07:27,411 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 339 flow [2023-08-30 11:07:27,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 208.0) internal successors, (1040), 5 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:27,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:27,411 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:07:27,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 11:07:27,412 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 11:07:27,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:27,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1302376472, now seen corresponding path program 1 times [2023-08-30 11:07:27,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:27,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013367049] [2023-08-30 11:07:27,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:27,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:27,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:07:27,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:27,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013367049] [2023-08-30 11:07:27,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013367049] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:07:27,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726092065] [2023-08-30 11:07:27,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:27,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:07:27,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:07:27,445 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:07:27,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 11:07:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:27,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 11:07:27,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:07:27,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:07:27,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:07:27,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:07:27,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726092065] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:07:27,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:07:27,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 13 [2023-08-30 11:07:27,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829132123] [2023-08-30 11:07:27,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:07:27,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:07:27,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:27,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:07:27,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:07:28,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 460 [2023-08-30 11:07:28,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 339 flow. Second operand has 13 states, 13 states have (on average 204.07692307692307) internal successors, (2653), 13 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:28,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:28,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 460 [2023-08-30 11:07:28,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:28,361 INFO L130 PetriNetUnfolder]: 1238/2245 cut-off events. [2023-08-30 11:07:28,361 INFO L131 PetriNetUnfolder]: For 1253/1253 co-relation queries the response was YES. [2023-08-30 11:07:28,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6444 conditions, 2245 events. 1238/2245 cut-off events. For 1253/1253 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 12874 event pairs, 100 based on Foata normal form. 14/2133 useless extension candidates. Maximal degree in co-relation 6420. Up to 1044 conditions per place. [2023-08-30 11:07:28,368 INFO L137 encePairwiseOnDemand]: 452/460 looper letters, 51 selfloop transitions, 16 changer transitions 29/96 dead transitions. [2023-08-30 11:07:28,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 96 transitions, 679 flow [2023-08-30 11:07:28,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 11:07:28,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 11:07:28,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2084 transitions. [2023-08-30 11:07:28,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45304347826086955 [2023-08-30 11:07:28,373 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2084 transitions. [2023-08-30 11:07:28,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2084 transitions. [2023-08-30 11:07:28,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:28,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2084 transitions. [2023-08-30 11:07:28,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 208.4) internal successors, (2084), 10 states have internal predecessors, (2084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:28,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 460.0) internal successors, (5060), 11 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:28,380 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 460.0) internal successors, (5060), 11 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:28,380 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 339 flow. Second operand 10 states and 2084 transitions. [2023-08-30 11:07:28,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 96 transitions, 679 flow [2023-08-30 11:07:28,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 96 transitions, 645 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-30 11:07:28,388 INFO L231 Difference]: Finished difference. Result has 62 places, 50 transitions, 345 flow [2023-08-30 11:07:28,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=345, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2023-08-30 11:07:28,389 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2023-08-30 11:07:28,389 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 345 flow [2023-08-30 11:07:28,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 204.07692307692307) internal successors, (2653), 13 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:28,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:28,389 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:07:28,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 11:07:28,593 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 [2023-08-30 11:07:28,594 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 11:07:28,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:28,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1206893862, now seen corresponding path program 1 times [2023-08-30 11:07:28,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:28,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467571952] [2023-08-30 11:07:28,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:28,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:28,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 11:07:28,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:28,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467571952] [2023-08-30 11:07:28,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467571952] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:07:28,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055261041] [2023-08-30 11:07:28,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:28,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:07:28,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:07:28,654 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:07:28,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 11:07:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:28,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 11:07:28,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:07:28,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:07:28,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:07:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:07:28,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055261041] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:07:28,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:07:28,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-08-30 11:07:28,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022089621] [2023-08-30 11:07:28,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:07:28,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:07:28,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:28,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:07:28,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:07:29,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 460 [2023-08-30 11:07:29,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 345 flow. Second operand has 13 states, 13 states have (on average 204.23076923076923) internal successors, (2655), 13 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:29,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:29,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 460 [2023-08-30 11:07:29,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:29,659 INFO L130 PetriNetUnfolder]: 2127/3839 cut-off events. [2023-08-30 11:07:29,659 INFO L131 PetriNetUnfolder]: For 2574/2574 co-relation queries the response was YES. [2023-08-30 11:07:29,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11270 conditions, 3839 events. 2127/3839 cut-off events. For 2574/2574 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 24911 event pairs, 621 based on Foata normal form. 126/3839 useless extension candidates. Maximal degree in co-relation 11246. Up to 1273 conditions per place. [2023-08-30 11:07:29,671 INFO L137 encePairwiseOnDemand]: 451/460 looper letters, 72 selfloop transitions, 11 changer transitions 29/112 dead transitions. [2023-08-30 11:07:29,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 112 transitions, 846 flow [2023-08-30 11:07:29,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 11:07:29,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 11:07:29,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2496 transitions. [2023-08-30 11:07:29,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45217391304347826 [2023-08-30 11:07:29,676 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2496 transitions. [2023-08-30 11:07:29,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2496 transitions. [2023-08-30 11:07:29,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:29,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2496 transitions. [2023-08-30 11:07:29,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 208.0) internal successors, (2496), 12 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:29,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 460.0) internal successors, (5980), 13 states have internal predecessors, (5980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:29,685 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 460.0) internal successors, (5980), 13 states have internal predecessors, (5980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:29,685 INFO L175 Difference]: Start difference. First operand has 62 places, 50 transitions, 345 flow. Second operand 12 states and 2496 transitions. [2023-08-30 11:07:29,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 112 transitions, 846 flow [2023-08-30 11:07:29,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 112 transitions, 814 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-30 11:07:29,702 INFO L231 Difference]: Finished difference. Result has 72 places, 54 transitions, 415 flow [2023-08-30 11:07:29,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=415, PETRI_PLACES=72, PETRI_TRANSITIONS=54} [2023-08-30 11:07:29,702 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2023-08-30 11:07:29,702 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 54 transitions, 415 flow [2023-08-30 11:07:29,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 204.23076923076923) internal successors, (2655), 13 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:29,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:29,703 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-08-30 11:07:29,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 11:07:29,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 11:07:29,909 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 11:07:29,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:29,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1799402700, now seen corresponding path program 2 times [2023-08-30 11:07:29,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:29,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385206131] [2023-08-30 11:07:29,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:29,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:30,056 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:30,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:30,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385206131] [2023-08-30 11:07:30,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385206131] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:07:30,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481416828] [2023-08-30 11:07:30,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:07:30,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:07:30,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:07:30,061 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:07:30,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 11:07:30,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:07:30,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:07:30,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:07:30,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:07:30,157 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 11:07:30,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:07:30,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481416828] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:07:30,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:07:30,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-08-30 11:07:30,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900732805] [2023-08-30 11:07:30,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:07:30,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:07:30,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:30,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:07:30,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-08-30 11:07:30,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 460 [2023-08-30 11:07:30,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 54 transitions, 415 flow. Second operand has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:30,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:30,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 460 [2023-08-30 11:07:30,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:30,504 INFO L130 PetriNetUnfolder]: 1587/2918 cut-off events. [2023-08-30 11:07:30,504 INFO L131 PetriNetUnfolder]: For 2817/2817 co-relation queries the response was YES. [2023-08-30 11:07:30,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9129 conditions, 2918 events. 1587/2918 cut-off events. For 2817/2817 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 16813 event pairs, 1269 based on Foata normal form. 3/2795 useless extension candidates. Maximal degree in co-relation 9099. Up to 2918 conditions per place. [2023-08-30 11:07:30,514 INFO L137 encePairwiseOnDemand]: 458/460 looper letters, 47 selfloop transitions, 1 changer transitions 4/52 dead transitions. [2023-08-30 11:07:30,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 52 transitions, 466 flow [2023-08-30 11:07:30,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:07:30,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:07:30,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 657 transitions. [2023-08-30 11:07:30,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47608695652173916 [2023-08-30 11:07:30,516 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 657 transitions. [2023-08-30 11:07:30,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 657 transitions. [2023-08-30 11:07:30,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:30,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 657 transitions. [2023-08-30 11:07:30,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:30,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:30,518 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:30,518 INFO L175 Difference]: Start difference. First operand has 72 places, 54 transitions, 415 flow. Second operand 3 states and 657 transitions. [2023-08-30 11:07:30,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 52 transitions, 466 flow [2023-08-30 11:07:30,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 52 transitions, 361 flow, removed 6 selfloop flow, removed 17 redundant places. [2023-08-30 11:07:30,527 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 226 flow [2023-08-30 11:07:30,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2023-08-30 11:07:30,528 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2023-08-30 11:07:30,528 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 226 flow [2023-08-30 11:07:30,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:30,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:30,528 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 11:07:30,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 11:07:30,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 11:07:30,733 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 11:07:30,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:30,733 INFO L85 PathProgramCache]: Analyzing trace with hash 854946249, now seen corresponding path program 2 times [2023-08-30 11:07:30,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:30,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304297921] [2023-08-30 11:07:30,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:30,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:30,848 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:07:30,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:30,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304297921] [2023-08-30 11:07:30,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304297921] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:07:30,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622701867] [2023-08-30 11:07:30,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:07:30,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:07:30,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:07:30,850 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:07:30,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 11:07:30,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:07:30,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:07:30,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:07:30,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:07:30,952 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:07:30,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:07:30,974 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:07:30,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622701867] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:07:30,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:07:30,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 2, 2] total 10 [2023-08-30 11:07:30,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292035775] [2023-08-30 11:07:30,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:07:30,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 11:07:30,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:30,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 11:07:30,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-08-30 11:07:31,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 460 [2023-08-30 11:07:31,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 226 flow. Second operand has 11 states, 11 states have (on average 200.27272727272728) internal successors, (2203), 11 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:31,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:31,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 460 [2023-08-30 11:07:31,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:31,767 INFO L130 PetriNetUnfolder]: 2242/3931 cut-off events. [2023-08-30 11:07:31,767 INFO L131 PetriNetUnfolder]: For 1696/1696 co-relation queries the response was YES. [2023-08-30 11:07:31,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10922 conditions, 3931 events. 2242/3931 cut-off events. For 1696/1696 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 24541 event pairs, 414 based on Foata normal form. 126/4057 useless extension candidates. Maximal degree in co-relation 10905. Up to 1224 conditions per place. [2023-08-30 11:07:31,775 INFO L137 encePairwiseOnDemand]: 453/460 looper letters, 0 selfloop transitions, 0 changer transitions 106/106 dead transitions. [2023-08-30 11:07:31,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 106 transitions, 637 flow [2023-08-30 11:07:31,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 11:07:31,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 11:07:31,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2244 transitions. [2023-08-30 11:07:31,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434782608695652 [2023-08-30 11:07:31,779 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2244 transitions. [2023-08-30 11:07:31,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2244 transitions. [2023-08-30 11:07:31,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:31,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2244 transitions. [2023-08-30 11:07:31,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 204.0) internal successors, (2244), 11 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:31,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 460.0) internal successors, (5520), 12 states have internal predecessors, (5520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:31,787 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 460.0) internal successors, (5520), 12 states have internal predecessors, (5520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:31,787 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 226 flow. Second operand 11 states and 2244 transitions. [2023-08-30 11:07:31,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 106 transitions, 637 flow [2023-08-30 11:07:31,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 106 transitions, 622 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-30 11:07:31,803 INFO L231 Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow [2023-08-30 11:07:31,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=52, PETRI_TRANSITIONS=0} [2023-08-30 11:07:31,804 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2023-08-30 11:07:31,804 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow [2023-08-30 11:07:31,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 200.27272727272728) internal successors, (2203), 11 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:31,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 22 remaining) [2023-08-30 11:07:31,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2023-08-30 11:07:31,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2023-08-30 11:07:31,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2023-08-30 11:07:31,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2023-08-30 11:07:31,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2023-08-30 11:07:31,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-08-30 11:07:31,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-08-30 11:07:31,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-08-30 11:07:31,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-08-30 11:07:31,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-08-30 11:07:31,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2023-08-30 11:07:31,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 22 remaining) [2023-08-30 11:07:31,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 22 remaining) [2023-08-30 11:07:31,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2023-08-30 11:07:31,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2023-08-30 11:07:31,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2023-08-30 11:07:31,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-08-30 11:07:31,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-08-30 11:07:31,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-08-30 11:07:31,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-08-30 11:07:31,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2023-08-30 11:07:31,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 11:07:32,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 11:07:32,013 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:07:32,017 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 11:07:32,017 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 11:07:32,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:07:32 BasicIcfg [2023-08-30 11:07:32,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 11:07:32,020 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 11:07:32,020 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 11:07:32,020 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 11:07:32,021 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:07:10" (3/4) ... [2023-08-30 11:07:32,022 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 11:07:32,026 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 11:07:32,026 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 11:07:32,029 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2023-08-30 11:07:32,030 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 11:07:32,030 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 11:07:32,030 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 11:07:32,055 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 11:07:32,055 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 11:07:32,061 INFO L158 Benchmark]: Toolchain (without parser) took 22202.97ms. Allocated memory was 73.4MB in the beginning and 3.2GB in the end (delta: 3.1GB). Free memory was 51.6MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2023-08-30 11:07:32,061 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 60.8MB. Free memory is still 38.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 11:07:32,061 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.68ms. Allocated memory is still 73.4MB. Free memory was 51.3MB in the beginning and 39.7MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 11:07:32,061 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.66ms. Allocated memory is still 73.4MB. Free memory was 39.5MB in the beginning and 37.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 11:07:32,062 INFO L158 Benchmark]: Boogie Preprocessor took 44.05ms. Allocated memory is still 73.4MB. Free memory was 37.7MB in the beginning and 36.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 11:07:32,062 INFO L158 Benchmark]: RCFGBuilder took 499.58ms. Allocated memory is still 73.4MB. Free memory was 35.8MB in the beginning and 35.2MB in the end (delta: 615.7kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 11:07:32,062 INFO L158 Benchmark]: TraceAbstraction took 21352.12ms. Allocated memory was 73.4MB in the beginning and 3.2GB in the end (delta: 3.1GB). Free memory was 34.5MB in the beginning and 1.5GB in the end (delta: -1.5GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2023-08-30 11:07:32,062 INFO L158 Benchmark]: Witness Printer took 34.51ms. Allocated memory is still 3.2GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 11:07:32,063 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 60.8MB. Free memory is still 38.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 226.68ms. Allocated memory is still 73.4MB. Free memory was 51.3MB in the beginning and 39.7MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.66ms. Allocated memory is still 73.4MB. Free memory was 39.5MB in the beginning and 37.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.05ms. Allocated memory is still 73.4MB. Free memory was 37.7MB in the beginning and 36.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 499.58ms. Allocated memory is still 73.4MB. Free memory was 35.8MB in the beginning and 35.2MB in the end (delta: 615.7kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 21352.12ms. Allocated memory was 73.4MB in the beginning and 3.2GB in the end (delta: 3.1GB). Free memory was 34.5MB in the beginning and 1.5GB in the end (delta: -1.5GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. * Witness Printer took 34.51ms. Allocated memory is still 3.2GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.2s, 194 PlacesBefore, 36 PlacesAfterwards, 205 TransitionsBefore, 36 TransitionsAfterwards, 4028 CoEnabledTransitionPairs, 8 FixpointIterations, 110 TrivialSequentialCompositions, 75 ConcurrentSequentialCompositions, 17 TrivialYvCompositions, 12 ConcurrentYvCompositions, 11 ChoiceCompositions, 225 TotalNumberOfCompositions, 5000 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4175, independent: 4076, independent conditional: 0, independent unconditional: 4076, dependent: 99, dependent conditional: 0, dependent unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2251, independent: 2234, independent conditional: 0, independent unconditional: 2234, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4175, independent: 1842, independent conditional: 0, independent unconditional: 1842, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 2251, unknown conditional: 0, unknown unconditional: 2251] , Statistics on independence cache: Total cache size (in pairs): 86, Positive cache size: 79, Positive conditional cache size: 0, Positive unconditional cache size: 79, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 285 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 21.2s, OverallIterations: 18, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 11.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3712 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2899 mSDsluCounter, 1387 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1149 mSDsCounter, 152 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6513 IncrementalHoareTripleChecker+Invalid, 6665 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 152 mSolverCounterUnsat, 238 mSDtfsCounter, 6513 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 210 GetRequests, 93 SyntacticMatches, 4 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=460occurred in iteration=7, InterpolantAutomatonStates: 100, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 231 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 246 ConstructedInterpolants, 0 QuantifiedInterpolants, 849 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1466 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 33 InterpolantComputations, 13 PerfectInterpolantSequences, 122/241 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 11:07:32,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE