./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-three-array-sum-alt.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-three-array-sum-alt.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 6727abf6d3311127e7c3f388ca276994a5a41bcb1f2faca3217c66ebe13b8b8f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:02:46,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:02:46,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:02:46,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:02:46,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:02:46,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:02:46,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:02:46,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:02:46,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:02:46,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:02:46,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:02:46,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:02:46,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:02:46,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:02:46,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:02:46,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:02:46,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:02:46,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:02:46,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:02:46,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:02:46,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:02:46,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:02:46,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:02:46,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:02:47,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:02:47,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:02:47,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:02:47,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:02:47,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:02:47,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:02:47,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:02:47,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:02:47,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:02:47,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:02:47,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:02:47,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:02:47,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:02:47,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:02:47,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:02:47,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:02:47,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:02:47,013 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:02:47,046 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:02:47,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:02:47,048 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:02:47,048 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:02:47,049 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:02:47,049 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:02:47,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:02:47,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:02:47,050 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:02:47,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:02:47,051 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:02:47,051 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:02:47,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:02:47,051 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:02:47,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:02:47,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:02:47,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:02:47,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:02:47,052 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:02:47,052 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:02:47,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:02:47,053 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:02:47,053 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:02:47,053 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:02:47,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:02:47,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:02:47,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:02:47,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:02:47,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:02:47,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:02:47,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:02:47,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:02:47,055 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:02:47,055 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:02:47,056 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:02:47,056 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:02:47,056 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:02:47,056 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6727abf6d3311127e7c3f388ca276994a5a41bcb1f2faca3217c66ebe13b8b8f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:02:47,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:02:47,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:02:47,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:02:47,400 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:02:47,400 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:02:47,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-three-array-sum-alt.wvr.c [2023-09-01 08:02:48,661 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:02:48,871 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:02:48,871 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-three-array-sum-alt.wvr.c [2023-09-01 08:02:48,878 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75cecc1d1/e959178e74014da3be81507e0ea23e68/FLAG40466e878 [2023-09-01 08:02:48,891 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75cecc1d1/e959178e74014da3be81507e0ea23e68 [2023-09-01 08:02:48,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:02:48,895 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:02:48,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:02:48,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:02:48,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:02:48,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:02:48" (1/1) ... [2023-09-01 08:02:48,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5079dc35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:48, skipping insertion in model container [2023-09-01 08:02:48,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:02:48" (1/1) ... [2023-09-01 08:02:48,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:02:48,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:02:49,137 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/popl20-bad-three-array-sum-alt.wvr.c[2412,2425] [2023-09-01 08:02:49,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:02:49,164 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:02:49,202 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/popl20-bad-three-array-sum-alt.wvr.c[2412,2425] [2023-09-01 08:02:49,213 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:02:49,226 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:02:49,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:49 WrapperNode [2023-09-01 08:02:49,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:02:49,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:02:49,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:02:49,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:02:49,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:49" (1/1) ... [2023-09-01 08:02:49,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:49" (1/1) ... [2023-09-01 08:02:49,299 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 15, calls inlined = 27, statements flattened = 357 [2023-09-01 08:02:49,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:02:49,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:02:49,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:02:49,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:02:49,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:49" (1/1) ... [2023-09-01 08:02:49,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:49" (1/1) ... [2023-09-01 08:02:49,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:49" (1/1) ... [2023-09-01 08:02:49,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:49" (1/1) ... [2023-09-01 08:02:49,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:49" (1/1) ... [2023-09-01 08:02:49,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:49" (1/1) ... [2023-09-01 08:02:49,357 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:49" (1/1) ... [2023-09-01 08:02:49,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:49" (1/1) ... [2023-09-01 08:02:49,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:02:49,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:02:49,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:02:49,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:02:49,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:49" (1/1) ... [2023-09-01 08:02:49,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:02:49,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:02:49,403 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 08:02:49,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 08:02:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:02:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:02:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:02:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:02:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:02:49,443 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:02:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:02:49,443 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:02:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:02:49,444 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:02:49,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:02:49,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:02:49,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:02:49,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:02:49,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:02:49,446 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:02:49,606 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:02:49,608 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:02:50,170 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:02:50,182 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:02:50,182 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-09-01 08:02:50,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:02:50 BoogieIcfgContainer [2023-09-01 08:02:50,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:02:50,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:02:50,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:02:50,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:02:50,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:02:48" (1/3) ... [2023-09-01 08:02:50,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dad1c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:02:50, skipping insertion in model container [2023-09-01 08:02:50,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:02:49" (2/3) ... [2023-09-01 08:02:50,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dad1c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:02:50, skipping insertion in model container [2023-09-01 08:02:50,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:02:50" (3/3) ... [2023-09-01 08:02:50,192 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-three-array-sum-alt.wvr.c [2023-09-01 08:02:50,199 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:02:50,208 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:02:50,209 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-09-01 08:02:50,209 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:02:50,357 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 08:02:50,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 425 places, 454 transitions, 932 flow [2023-09-01 08:02:50,618 INFO L130 PetriNetUnfolder]: 39/451 cut-off events. [2023-09-01 08:02:50,618 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:02:50,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 451 events. 39/451 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 942 event pairs, 0 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 277. Up to 2 conditions per place. [2023-09-01 08:02:50,632 INFO L82 GeneralOperation]: Start removeDead. Operand has 425 places, 454 transitions, 932 flow [2023-09-01 08:02:50,644 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 402 places, 430 transitions, 878 flow [2023-09-01 08:02:50,651 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:02:50,664 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 402 places, 430 transitions, 878 flow [2023-09-01 08:02:50,668 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 402 places, 430 transitions, 878 flow [2023-09-01 08:02:50,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 402 places, 430 transitions, 878 flow [2023-09-01 08:02:50,756 INFO L130 PetriNetUnfolder]: 38/430 cut-off events. [2023-09-01 08:02:50,757 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:02:50,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 430 events. 38/430 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 879 event pairs, 0 based on Foata normal form. 0/351 useless extension candidates. Maximal degree in co-relation 277. Up to 2 conditions per place. [2023-09-01 08:02:50,780 INFO L119 LiptonReduction]: Number of co-enabled transitions 37326 [2023-09-01 08:03:17,256 INFO L134 LiptonReduction]: Checked pairs total: 38791 [2023-09-01 08:03:17,257 INFO L136 LiptonReduction]: Total number of compositions: 576 [2023-09-01 08:03:17,270 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:03:17,276 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;@5aa70852, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:03:17,276 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2023-09-01 08:03:17,279 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:03:17,279 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:03:17,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:03:17,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:03:17,281 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-09-01 08:03:17,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:03:17,285 INFO L85 PathProgramCache]: Analyzing trace with hash 60481, now seen corresponding path program 1 times [2023-09-01 08:03:17,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:03:17,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658596659] [2023-09-01 08:03:17,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:03:17,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:03:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:03:17,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:03:17,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:03:17,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658596659] [2023-09-01 08:03:17,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658596659] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:03:17,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:03:17,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:03:17,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164343767] [2023-09-01 08:03:17,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:03:17,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:03:17,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:03:17,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:03:17,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:03:17,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 415 out of 1030 [2023-09-01 08:03:17,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 69 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 415.6666666666667) internal successors, (1247), 3 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:17,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:03:17,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 415 of 1030 [2023-09-01 08:03:17,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:03:21,259 INFO L130 PetriNetUnfolder]: 17709/22097 cut-off events. [2023-09-01 08:03:21,261 INFO L131 PetriNetUnfolder]: For 278/278 co-relation queries the response was YES. [2023-09-01 08:03:21,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44603 conditions, 22097 events. 17709/22097 cut-off events. For 278/278 co-relation queries the response was YES. Maximal size of possible extension queue 2207. Compared 111250 event pairs, 8670 based on Foata normal form. 0/4889 useless extension candidates. Maximal degree in co-relation 20211. Up to 10962 conditions per place. [2023-09-01 08:03:21,439 INFO L137 encePairwiseOnDemand]: 1006/1030 looper letters, 95 selfloop transitions, 6 changer transitions 0/104 dead transitions. [2023-09-01 08:03:21,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 104 transitions, 446 flow [2023-09-01 08:03:21,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:03:21,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:03:21,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1376 transitions. [2023-09-01 08:03:21,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453074433656958 [2023-09-01 08:03:21,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1376 transitions. [2023-09-01 08:03:21,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1376 transitions. [2023-09-01 08:03:21,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:03:21,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1376 transitions. [2023-09-01 08:03:21,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 458.6666666666667) internal successors, (1376), 3 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:21,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:21,493 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:21,494 INFO L175 Difference]: Start difference. First operand has 73 places, 69 transitions, 156 flow. Second operand 3 states and 1376 transitions. [2023-09-01 08:03:21,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 104 transitions, 446 flow [2023-09-01 08:03:21,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 104 transitions, 422 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 08:03:21,526 INFO L231 Difference]: Finished difference. Result has 59 places, 62 transitions, 176 flow [2023-09-01 08:03:21,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=59, PETRI_TRANSITIONS=62} [2023-09-01 08:03:21,531 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -14 predicate places. [2023-09-01 08:03:21,531 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 62 transitions, 176 flow [2023-09-01 08:03:21,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 415.6666666666667) internal successors, (1247), 3 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:21,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:03:21,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:03:21,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:03:21,537 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-09-01 08:03:21,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:03:21,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1876647, now seen corresponding path program 1 times [2023-09-01 08:03:21,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:03:21,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062101330] [2023-09-01 08:03:21,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:03:21,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:03:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:03:21,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:03:21,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:03:21,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062101330] [2023-09-01 08:03:21,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062101330] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:03:21,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:03:21,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:03:21,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531460928] [2023-09-01 08:03:21,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:03:21,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:03:21,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:03:21,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:03:21,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:03:21,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 415 out of 1030 [2023-09-01 08:03:21,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 416.0) internal successors, (1248), 3 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:21,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:03:21,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 415 of 1030 [2023-09-01 08:03:21,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:03:24,385 INFO L130 PetriNetUnfolder]: 17709/22094 cut-off events. [2023-09-01 08:03:24,385 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-09-01 08:03:24,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44212 conditions, 22094 events. 17709/22094 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 2594. Compared 112449 event pairs, 8670 based on Foata normal form. 0/4895 useless extension candidates. Maximal degree in co-relation 22086. Up to 21912 conditions per place. [2023-09-01 08:03:24,483 INFO L137 encePairwiseOnDemand]: 1026/1030 looper letters, 55 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2023-09-01 08:03:24,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 59 transitions, 276 flow [2023-09-01 08:03:24,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:03:24,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:03:24,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1299 transitions. [2023-09-01 08:03:24,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4203883495145631 [2023-09-01 08:03:24,488 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1299 transitions. [2023-09-01 08:03:24,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1299 transitions. [2023-09-01 08:03:24,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:03:24,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1299 transitions. [2023-09-01 08:03:24,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 433.0) internal successors, (1299), 3 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:24,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:24,499 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:24,499 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 176 flow. Second operand 3 states and 1299 transitions. [2023-09-01 08:03:24,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 59 transitions, 276 flow [2023-09-01 08:03:24,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 59 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:03:24,502 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 154 flow [2023-09-01 08:03:24,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2023-09-01 08:03:24,503 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -17 predicate places. [2023-09-01 08:03:24,503 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 154 flow [2023-09-01 08:03:24,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 416.0) internal successors, (1248), 3 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:24,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:03:24,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:03:24,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 08:03:24,505 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-09-01 08:03:24,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:03:24,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1876648, now seen corresponding path program 1 times [2023-09-01 08:03:24,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:03:24,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070070563] [2023-09-01 08:03:24,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:03:24,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:03:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:03:24,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:03:24,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:03:24,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070070563] [2023-09-01 08:03:24,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070070563] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:03:24,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171721799] [2023-09-01 08:03:24,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:03:24,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:03:24,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:03:24,617 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:03:24,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 08:03:24,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:03:24,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:03:24,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:03:24,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:03:24,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:03:24,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:03:24,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171721799] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:03:24,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:03:24,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:03:24,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120199339] [2023-09-01 08:03:24,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:03:24,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:03:24,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:03:24,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:03:24,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:03:24,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 415 out of 1030 [2023-09-01 08:03:24,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 416.14285714285717) internal successors, (2913), 7 states have internal predecessors, (2913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:24,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:03:24,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 415 of 1030 [2023-09-01 08:03:24,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:03:30,893 INFO L130 PetriNetUnfolder]: 44271/55229 cut-off events. [2023-09-01 08:03:30,893 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 08:03:30,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110492 conditions, 55229 events. 44271/55229 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 4701. Compared 304298 event pairs, 21675 based on Foata normal form. 0/12226 useless extension candidates. Maximal degree in co-relation 110484. Up to 10960 conditions per place. [2023-09-01 08:03:31,155 INFO L137 encePairwiseOnDemand]: 1021/1030 looper letters, 218 selfloop transitions, 21 changer transitions 0/242 dead transitions. [2023-09-01 08:03:31,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 242 transitions, 1052 flow [2023-09-01 08:03:31,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:03:31,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:03:31,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2738 transitions. [2023-09-01 08:03:31,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.443042071197411 [2023-09-01 08:03:31,163 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2738 transitions. [2023-09-01 08:03:31,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2738 transitions. [2023-09-01 08:03:31,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:03:31,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2738 transitions. [2023-09-01 08:03:31,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 456.3333333333333) internal successors, (2738), 6 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:31,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1030.0) internal successors, (7210), 7 states have internal predecessors, (7210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:31,183 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1030.0) internal successors, (7210), 7 states have internal predecessors, (7210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:31,184 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 154 flow. Second operand 6 states and 2738 transitions. [2023-09-01 08:03:31,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 242 transitions, 1052 flow [2023-09-01 08:03:31,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 242 transitions, 1051 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:03:31,189 INFO L231 Difference]: Finished difference. Result has 63 places, 74 transitions, 303 flow [2023-09-01 08:03:31,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=63, PETRI_TRANSITIONS=74} [2023-09-01 08:03:31,191 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2023-09-01 08:03:31,191 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 74 transitions, 303 flow [2023-09-01 08:03:31,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 416.14285714285717) internal successors, (2913), 7 states have internal predecessors, (2913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:31,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:03:31,193 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:03:31,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 08:03:31,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:03:31,399 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-09-01 08:03:31,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:03:31,399 INFO L85 PathProgramCache]: Analyzing trace with hash 74339778, now seen corresponding path program 2 times [2023-09-01 08:03:31,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:03:31,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440709754] [2023-09-01 08:03:31,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:03:31,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:03:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:03:31,539 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:03:31,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:03:31,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440709754] [2023-09-01 08:03:31,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440709754] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:03:31,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075666863] [2023-09-01 08:03:31,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:03:31,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:03:31,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:03:31,542 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:03:31,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 08:03:31,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:03:31,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:03:31,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:03:31,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:03:31,651 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:03:31,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:03:31,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075666863] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:03:31,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:03:31,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:03:31,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173247023] [2023-09-01 08:03:31,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:03:31,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:03:31,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:03:31,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:03:31,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:03:31,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 1030 [2023-09-01 08:03:31,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 74 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 419.0) internal successors, (1257), 3 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:31,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:03:31,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 1030 [2023-09-01 08:03:31,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:03:38,107 INFO L130 PetriNetUnfolder]: 44271/55228 cut-off events. [2023-09-01 08:03:38,107 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-09-01 08:03:38,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110537 conditions, 55228 events. 44271/55228 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 4648. Compared 304814 event pairs, 21675 based on Foata normal form. 1/12235 useless extension candidates. Maximal degree in co-relation 110525. Up to 54768 conditions per place. [2023-09-01 08:03:38,359 INFO L137 encePairwiseOnDemand]: 1027/1030 looper letters, 64 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2023-09-01 08:03:38,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 73 transitions, 433 flow [2023-09-01 08:03:38,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:03:38,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:03:38,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1305 transitions. [2023-09-01 08:03:38,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4223300970873786 [2023-09-01 08:03:38,364 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1305 transitions. [2023-09-01 08:03:38,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1305 transitions. [2023-09-01 08:03:38,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:03:38,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1305 transitions. [2023-09-01 08:03:38,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 435.0) internal successors, (1305), 3 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:38,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:38,375 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:38,376 INFO L175 Difference]: Start difference. First operand has 63 places, 74 transitions, 303 flow. Second operand 3 states and 1305 transitions. [2023-09-01 08:03:38,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 73 transitions, 433 flow [2023-09-01 08:03:38,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 73 transitions, 403 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-09-01 08:03:38,378 INFO L231 Difference]: Finished difference. Result has 63 places, 73 transitions, 275 flow [2023-09-01 08:03:38,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=63, PETRI_TRANSITIONS=73} [2023-09-01 08:03:38,379 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2023-09-01 08:03:38,380 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 73 transitions, 275 flow [2023-09-01 08:03:38,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 419.0) internal successors, (1257), 3 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:38,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:03:38,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:03:38,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-09-01 08:03:38,585 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,SelfDestructingSolverStorable3 [2023-09-01 08:03:38,586 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-09-01 08:03:38,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:03:38,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1126192154, now seen corresponding path program 1 times [2023-09-01 08:03:38,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:03:38,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342759035] [2023-09-01 08:03:38,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:03:38,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:03:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:03:38,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:03:38,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:03:38,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342759035] [2023-09-01 08:03:38,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342759035] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:03:38,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:03:38,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:03:38,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398112851] [2023-09-01 08:03:38,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:03:38,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:03:38,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:03:38,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:03:38,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:03:38,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 422 out of 1030 [2023-09-01 08:03:38,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 73 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 424.0) internal successors, (1272), 3 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:38,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:03:38,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 422 of 1030 [2023-09-01 08:03:38,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:03:46,538 INFO L130 PetriNetUnfolder]: 58916/74263 cut-off events. [2023-09-01 08:03:46,539 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-09-01 08:03:46,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148996 conditions, 74263 events. 58916/74263 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 6065. Compared 440060 event pairs, 10355 based on Foata normal form. 0/17172 useless extension candidates. Maximal degree in co-relation 148983. Up to 51246 conditions per place. [2023-09-01 08:03:46,891 INFO L137 encePairwiseOnDemand]: 1022/1030 looper letters, 102 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2023-09-01 08:03:46,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 109 transitions, 564 flow [2023-09-01 08:03:46,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:03:46,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:03:46,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1356 transitions. [2023-09-01 08:03:46,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388349514563107 [2023-09-01 08:03:46,896 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1356 transitions. [2023-09-01 08:03:46,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1356 transitions. [2023-09-01 08:03:46,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:03:46,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1356 transitions. [2023-09-01 08:03:46,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 452.0) internal successors, (1356), 3 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:46,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:46,905 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:46,905 INFO L175 Difference]: Start difference. First operand has 63 places, 73 transitions, 275 flow. Second operand 3 states and 1356 transitions. [2023-09-01 08:03:46,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 109 transitions, 564 flow [2023-09-01 08:03:46,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 109 transitions, 552 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:03:46,910 INFO L231 Difference]: Finished difference. Result has 64 places, 76 transitions, 295 flow [2023-09-01 08:03:46,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=295, PETRI_PLACES=64, PETRI_TRANSITIONS=76} [2023-09-01 08:03:46,913 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2023-09-01 08:03:46,913 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 76 transitions, 295 flow [2023-09-01 08:03:46,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 424.0) internal successors, (1272), 3 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:46,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:03:46,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:03:46,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 08:03:46,914 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-09-01 08:03:46,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:03:46,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1126192174, now seen corresponding path program 1 times [2023-09-01 08:03:46,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:03:46,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813038673] [2023-09-01 08:03:46,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:03:46,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:03:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:03:46,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:03:46,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:03:46,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813038673] [2023-09-01 08:03:46,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813038673] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:03:46,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:03:46,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:03:46,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89874396] [2023-09-01 08:03:46,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:03:46,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:03:46,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:03:46,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:03:46,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:03:46,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 422 out of 1030 [2023-09-01 08:03:46,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 76 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 424.3333333333333) internal successors, (1273), 3 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:46,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:03:46,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 422 of 1030 [2023-09-01 08:03:46,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:03:54,722 INFO L130 PetriNetUnfolder]: 58331/74763 cut-off events. [2023-09-01 08:03:54,722 INFO L131 PetriNetUnfolder]: For 2101/2101 co-relation queries the response was YES. [2023-09-01 08:03:54,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157222 conditions, 74763 events. 58331/74763 cut-off events. For 2101/2101 co-relation queries the response was YES. Maximal size of possible extension queue 6382. Compared 466557 event pairs, 13935 based on Foata normal form. 0/21056 useless extension candidates. Maximal degree in co-relation 157208. Up to 47904 conditions per place. [2023-09-01 08:03:55,063 INFO L137 encePairwiseOnDemand]: 1026/1030 looper letters, 103 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2023-09-01 08:03:55,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 107 transitions, 566 flow [2023-09-01 08:03:55,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:03:55,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:03:55,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1353 transitions. [2023-09-01 08:03:55,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43786407766990293 [2023-09-01 08:03:55,067 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1353 transitions. [2023-09-01 08:03:55,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1353 transitions. [2023-09-01 08:03:55,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:03:55,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1353 transitions. [2023-09-01 08:03:55,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 451.0) internal successors, (1353), 3 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:55,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:55,076 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:55,076 INFO L175 Difference]: Start difference. First operand has 64 places, 76 transitions, 295 flow. Second operand 3 states and 1353 transitions. [2023-09-01 08:03:55,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 107 transitions, 566 flow [2023-09-01 08:03:55,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 107 transitions, 564 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:03:55,084 INFO L231 Difference]: Finished difference. Result has 65 places, 74 transitions, 287 flow [2023-09-01 08:03:55,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=65, PETRI_TRANSITIONS=74} [2023-09-01 08:03:55,086 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -8 predicate places. [2023-09-01 08:03:55,086 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 74 transitions, 287 flow [2023-09-01 08:03:55,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 424.3333333333333) internal successors, (1273), 3 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:55,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:03:55,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:03:55,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 08:03:55,087 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-09-01 08:03:55,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:03:55,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1126192153, now seen corresponding path program 1 times [2023-09-01 08:03:55,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:03:55,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615441315] [2023-09-01 08:03:55,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:03:55,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:03:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:03:55,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:03:55,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:03:55,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615441315] [2023-09-01 08:03:55,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615441315] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:03:55,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:03:55,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:03:55,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365022384] [2023-09-01 08:03:55,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:03:55,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:03:55,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:03:55,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:03:55,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:03:55,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 1030 [2023-09-01 08:03:55,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 74 transitions, 287 flow. Second operand has 5 states, 5 states have (on average 408.4) internal successors, (2042), 5 states have internal predecessors, (2042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:55,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:03:55,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 1030 [2023-09-01 08:03:55,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:04:03,051 INFO L130 PetriNetUnfolder]: 56628/73379 cut-off events. [2023-09-01 08:04:03,051 INFO L131 PetriNetUnfolder]: For 5195/5195 co-relation queries the response was YES. [2023-09-01 08:04:03,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154484 conditions, 73379 events. 56628/73379 cut-off events. For 5195/5195 co-relation queries the response was YES. Maximal size of possible extension queue 6222. Compared 468628 event pairs, 27332 based on Foata normal form. 890/23091 useless extension candidates. Maximal degree in co-relation 154470. Up to 57222 conditions per place. [2023-09-01 08:04:03,383 INFO L137 encePairwiseOnDemand]: 1017/1030 looper letters, 173 selfloop transitions, 23 changer transitions 0/198 dead transitions. [2023-09-01 08:04:03,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 198 transitions, 1018 flow [2023-09-01 08:04:03,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:04:03,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:04:03,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3034 transitions. [2023-09-01 08:04:03,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42080443828016645 [2023-09-01 08:04:03,390 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3034 transitions. [2023-09-01 08:04:03,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3034 transitions. [2023-09-01 08:04:03,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:04:03,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3034 transitions. [2023-09-01 08:04:03,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 433.42857142857144) internal successors, (3034), 7 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:03,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:03,412 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:03,412 INFO L175 Difference]: Start difference. First operand has 65 places, 74 transitions, 287 flow. Second operand 7 states and 3034 transitions. [2023-09-01 08:04:03,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 198 transitions, 1018 flow [2023-09-01 08:04:03,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 198 transitions, 1012 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:04:03,508 INFO L231 Difference]: Finished difference. Result has 74 places, 84 transitions, 444 flow [2023-09-01 08:04:03,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=444, PETRI_PLACES=74, PETRI_TRANSITIONS=84} [2023-09-01 08:04:03,509 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 1 predicate places. [2023-09-01 08:04:03,509 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 84 transitions, 444 flow [2023-09-01 08:04:03,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 408.4) internal successors, (2042), 5 states have internal predecessors, (2042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:03,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:04:03,510 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 08:04:03,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 08:04:03,510 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-09-01 08:04:03,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:04:03,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1119647531, now seen corresponding path program 1 times [2023-09-01 08:04:03,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:04:03,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023081686] [2023-09-01 08:04:03,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:03,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:04:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:03,599 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:04:03,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:04:03,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023081686] [2023-09-01 08:04:03,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023081686] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:04:03,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:04:03,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:04:03,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375437680] [2023-09-01 08:04:03,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:04:03,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:04:03,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:04:03,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:04:03,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:04:03,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 1030 [2023-09-01 08:04:03,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 84 transitions, 444 flow. Second operand has 4 states, 4 states have (on average 408.25) internal successors, (1633), 4 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:03,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:04:03,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 1030 [2023-09-01 08:04:03,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:04:10,080 INFO L130 PetriNetUnfolder]: 43251/56075 cut-off events. [2023-09-01 08:04:10,081 INFO L131 PetriNetUnfolder]: For 49397/49798 co-relation queries the response was YES. [2023-09-01 08:04:10,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142171 conditions, 56075 events. 43251/56075 cut-off events. For 49397/49798 co-relation queries the response was YES. Maximal size of possible extension queue 5347. Compared 353354 event pairs, 25296 based on Foata normal form. 403/21973 useless extension candidates. Maximal degree in co-relation 142152. Up to 53434 conditions per place. [2023-09-01 08:04:10,393 INFO L137 encePairwiseOnDemand]: 1023/1030 looper letters, 89 selfloop transitions, 15 changer transitions 0/108 dead transitions. [2023-09-01 08:04:10,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 108 transitions, 656 flow [2023-09-01 08:04:10,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:04:10,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:04:10,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1718 transitions. [2023-09-01 08:04:10,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41699029126213594 [2023-09-01 08:04:10,398 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1718 transitions. [2023-09-01 08:04:10,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1718 transitions. [2023-09-01 08:04:10,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:04:10,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1718 transitions. [2023-09-01 08:04:10,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 429.5) internal successors, (1718), 4 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:10,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:10,406 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:10,407 INFO L175 Difference]: Start difference. First operand has 74 places, 84 transitions, 444 flow. Second operand 4 states and 1718 transitions. [2023-09-01 08:04:10,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 108 transitions, 656 flow [2023-09-01 08:04:10,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 108 transitions, 638 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-09-01 08:04:10,434 INFO L231 Difference]: Finished difference. Result has 73 places, 77 transitions, 390 flow [2023-09-01 08:04:10,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=390, PETRI_PLACES=73, PETRI_TRANSITIONS=77} [2023-09-01 08:04:10,435 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 0 predicate places. [2023-09-01 08:04:10,435 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 77 transitions, 390 flow [2023-09-01 08:04:10,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 408.25) internal successors, (1633), 4 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:10,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:04:10,436 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-09-01 08:04:10,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 08:04:10,437 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-09-01 08:04:10,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:04:10,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1536217221, now seen corresponding path program 1 times [2023-09-01 08:04:10,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:04:10,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213446749] [2023-09-01 08:04:10,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:10,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:04:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:10,521 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:04:10,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:04:10,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213446749] [2023-09-01 08:04:10,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213446749] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:04:10,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057639498] [2023-09-01 08:04:10,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:10,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:04:10,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:04:10,523 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:04:10,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 08:04:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:10,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 08:04:10,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:04:10,717 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:04:10,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:04:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:04:10,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057639498] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:04:10,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:04:10,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2023-09-01 08:04:10,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902806839] [2023-09-01 08:04:10,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:04:10,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 08:04:10,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:04:10,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 08:04:10,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-09-01 08:04:11,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 1030 [2023-09-01 08:04:11,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 77 transitions, 390 flow. Second operand has 14 states, 14 states have (on average 405.2857142857143) internal successors, (5674), 14 states have internal predecessors, (5674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:11,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:04:11,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 1030 [2023-09-01 08:04:11,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:04:18,198 INFO L130 PetriNetUnfolder]: 48331/62749 cut-off events. [2023-09-01 08:04:18,198 INFO L131 PetriNetUnfolder]: For 18971/19372 co-relation queries the response was YES. [2023-09-01 08:04:18,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142130 conditions, 62749 events. 48331/62749 cut-off events. For 18971/19372 co-relation queries the response was YES. Maximal size of possible extension queue 4769. Compared 393100 event pairs, 28231 based on Foata normal form. 2143/25182 useless extension candidates. Maximal degree in co-relation 142111. Up to 40062 conditions per place. [2023-09-01 08:04:18,547 INFO L137 encePairwiseOnDemand]: 1018/1030 looper letters, 162 selfloop transitions, 27 changer transitions 0/193 dead transitions. [2023-09-01 08:04:18,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 193 transitions, 1103 flow [2023-09-01 08:04:18,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 08:04:18,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 08:04:18,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4224 transitions. [2023-09-01 08:04:18,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41009708737864076 [2023-09-01 08:04:18,553 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4224 transitions. [2023-09-01 08:04:18,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4224 transitions. [2023-09-01 08:04:18,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:04:18,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4224 transitions. [2023-09-01 08:04:18,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 422.4) internal successors, (4224), 10 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:18,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:18,568 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:18,569 INFO L175 Difference]: Start difference. First operand has 73 places, 77 transitions, 390 flow. Second operand 10 states and 4224 transitions. [2023-09-01 08:04:18,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 193 transitions, 1103 flow [2023-09-01 08:04:18,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 193 transitions, 1068 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:04:18,589 INFO L231 Difference]: Finished difference. Result has 84 places, 84 transitions, 508 flow [2023-09-01 08:04:18,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=508, PETRI_PLACES=84, PETRI_TRANSITIONS=84} [2023-09-01 08:04:18,593 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 11 predicate places. [2023-09-01 08:04:18,593 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 84 transitions, 508 flow [2023-09-01 08:04:18,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 405.2857142857143) internal successors, (5674), 14 states have internal predecessors, (5674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:18,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:04:18,595 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-09-01 08:04:18,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-09-01 08:04:18,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:04:18,800 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-09-01 08:04:18,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:04:18,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1564975723, now seen corresponding path program 2 times [2023-09-01 08:04:18,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:04:18,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991895389] [2023-09-01 08:04:18,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:18,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:04:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:18,948 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:04:18,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:04:18,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991895389] [2023-09-01 08:04:18,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991895389] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:04:18,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688327942] [2023-09-01 08:04:18,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:04:18,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:04:18,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:04:18,949 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:04:18,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 08:04:19,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:04:19,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:04:19,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:04:19,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:04:19,068 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-09-01 08:04:19,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:04:19,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688327942] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:04:19,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:04:19,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-09-01 08:04:19,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995249821] [2023-09-01 08:04:19,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:04:19,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:04:19,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:04:19,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:04:19,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-09-01 08:04:19,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 416 out of 1030 [2023-09-01 08:04:19,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 84 transitions, 508 flow. Second operand has 4 states, 4 states have (on average 417.25) internal successors, (1669), 4 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:19,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:04:19,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 416 of 1030 [2023-09-01 08:04:19,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:04:24,899 INFO L130 PetriNetUnfolder]: 42562/54764 cut-off events. [2023-09-01 08:04:24,900 INFO L131 PetriNetUnfolder]: For 33194/33595 co-relation queries the response was YES. [2023-09-01 08:04:25,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118385 conditions, 54764 events. 42562/54764 cut-off events. For 33194/33595 co-relation queries the response was YES. Maximal size of possible extension queue 3447. Compared 328749 event pairs, 23861 based on Foata normal form. 3676/21360 useless extension candidates. Maximal degree in co-relation 118362. Up to 54470 conditions per place. [2023-09-01 08:04:25,214 INFO L137 encePairwiseOnDemand]: 1024/1030 looper letters, 74 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2023-09-01 08:04:25,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 79 transitions, 604 flow [2023-09-01 08:04:25,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:04:25,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:04:25,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1298 transitions. [2023-09-01 08:04:25,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42006472491909386 [2023-09-01 08:04:25,216 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1298 transitions. [2023-09-01 08:04:25,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1298 transitions. [2023-09-01 08:04:25,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:04:25,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1298 transitions. [2023-09-01 08:04:25,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 432.6666666666667) internal successors, (1298), 3 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:25,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:25,222 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:25,223 INFO L175 Difference]: Start difference. First operand has 84 places, 84 transitions, 508 flow. Second operand 3 states and 1298 transitions. [2023-09-01 08:04:25,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 79 transitions, 604 flow [2023-09-01 08:04:25,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 79 transitions, 511 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-09-01 08:04:25,245 INFO L231 Difference]: Finished difference. Result has 71 places, 79 transitions, 363 flow [2023-09-01 08:04:25,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=363, PETRI_PLACES=71, PETRI_TRANSITIONS=79} [2023-09-01 08:04:25,246 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -2 predicate places. [2023-09-01 08:04:25,246 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 79 transitions, 363 flow [2023-09-01 08:04:25,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 417.25) internal successors, (1669), 4 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:25,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:04:25,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:04:25,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 08:04:25,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:04:25,453 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-09-01 08:04:25,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:04:25,454 INFO L85 PathProgramCache]: Analyzing trace with hash -43015009, now seen corresponding path program 1 times [2023-09-01 08:04:25,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:04:25,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240397482] [2023-09-01 08:04:25,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:25,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:04:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:04:25,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:04:25,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240397482] [2023-09-01 08:04:25,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240397482] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:04:25,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:04:25,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:04:25,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267870872] [2023-09-01 08:04:25,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:04:25,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:04:25,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:04:25,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:04:25,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:04:25,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 1030 [2023-09-01 08:04:25,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 79 transitions, 363 flow. Second operand has 5 states, 5 states have (on average 408.8) internal successors, (2044), 5 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:25,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:04:25,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 1030 [2023-09-01 08:04:25,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:04:30,159 INFO L130 PetriNetUnfolder]: 31403/43285 cut-off events. [2023-09-01 08:04:30,160 INFO L131 PetriNetUnfolder]: For 5198/5330 co-relation queries the response was YES. [2023-09-01 08:04:30,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95263 conditions, 43285 events. 31403/43285 cut-off events. For 5198/5330 co-relation queries the response was YES. Maximal size of possible extension queue 3375. Compared 292501 event pairs, 22748 based on Foata normal form. 132/17277 useless extension candidates. Maximal degree in co-relation 95246. Up to 42128 conditions per place. [2023-09-01 08:04:30,386 INFO L137 encePairwiseOnDemand]: 1016/1030 looper letters, 96 selfloop transitions, 21 changer transitions 0/120 dead transitions. [2023-09-01 08:04:30,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 120 transitions, 693 flow [2023-09-01 08:04:30,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:04:30,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:04:30,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2135 transitions. [2023-09-01 08:04:30,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4145631067961165 [2023-09-01 08:04:30,390 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2135 transitions. [2023-09-01 08:04:30,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2135 transitions. [2023-09-01 08:04:30,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:04:30,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2135 transitions. [2023-09-01 08:04:30,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 427.0) internal successors, (2135), 5 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:30,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1030.0) internal successors, (6180), 6 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:30,398 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1030.0) internal successors, (6180), 6 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:30,398 INFO L175 Difference]: Start difference. First operand has 71 places, 79 transitions, 363 flow. Second operand 5 states and 2135 transitions. [2023-09-01 08:04:30,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 120 transitions, 693 flow [2023-09-01 08:04:30,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 120 transitions, 692 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:04:30,404 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 427 flow [2023-09-01 08:04:30,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=427, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2023-09-01 08:04:30,405 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2023-09-01 08:04:30,405 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 427 flow [2023-09-01 08:04:30,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 408.8) internal successors, (2044), 5 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:30,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:04:30,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:04:30,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 08:04:30,406 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-09-01 08:04:30,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:04:30,407 INFO L85 PathProgramCache]: Analyzing trace with hash -875630716, now seen corresponding path program 1 times [2023-09-01 08:04:30,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:04:30,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759505614] [2023-09-01 08:04:30,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:30,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:04:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:04:31,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:04:31,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759505614] [2023-09-01 08:04:31,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759505614] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:04:31,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147573174] [2023-09-01 08:04:31,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:31,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:04:31,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:04:31,229 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:04:31,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 08:04:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:31,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 31 conjunts are in the unsatisfiable core [2023-09-01 08:04:31,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:04:31,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:04:31,445 INFO L321 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-09-01 08:04:31,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 39 [2023-09-01 08:04:31,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:04:31,546 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-09-01 08:04:31,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-09-01 08:04:31,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:04:31,636 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 08:04:31,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 08:04:31,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:04:31,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:04:31,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:04:31,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:04:31,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:04:31,949 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:04:31,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2023-09-01 08:04:31,960 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:04:31,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 119 [2023-09-01 08:04:31,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 100 [2023-09-01 08:04:31,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 96 [2023-09-01 08:04:31,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 46 [2023-09-01 08:04:32,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:04:32,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147573174] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:04:32,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:04:32,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-09-01 08:04:32,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723630158] [2023-09-01 08:04:32,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:04:32,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 08:04:32,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:04:32,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 08:04:32,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=434, Unknown=10, NotChecked=0, Total=552 [2023-09-01 08:04:32,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 1030 [2023-09-01 08:04:32,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 427 flow. Second operand has 24 states, 24 states have (on average 363.125) internal successors, (8715), 24 states have internal predecessors, (8715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:32,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:04:32,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 1030 [2023-09-01 08:04:32,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:04:40,849 INFO L130 PetriNetUnfolder]: 57576/74752 cut-off events. [2023-09-01 08:04:40,849 INFO L131 PetriNetUnfolder]: For 7654/7734 co-relation queries the response was YES. [2023-09-01 08:04:41,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184952 conditions, 74752 events. 57576/74752 cut-off events. For 7654/7734 co-relation queries the response was YES. Maximal size of possible extension queue 5614. Compared 486184 event pairs, 20113 based on Foata normal form. 80/27516 useless extension candidates. Maximal degree in co-relation 184932. Up to 52934 conditions per place. [2023-09-01 08:04:41,260 INFO L137 encePairwiseOnDemand]: 1018/1030 looper letters, 92 selfloop transitions, 22 changer transitions 0/117 dead transitions. [2023-09-01 08:04:41,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 117 transitions, 775 flow [2023-09-01 08:04:41,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:04:41,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:04:41,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2982 transitions. [2023-09-01 08:04:41,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36189320388349516 [2023-09-01 08:04:41,265 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2982 transitions. [2023-09-01 08:04:41,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2982 transitions. [2023-09-01 08:04:41,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:04:41,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2982 transitions. [2023-09-01 08:04:41,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 372.75) internal successors, (2982), 8 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:41,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1030.0) internal successors, (9270), 9 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:41,274 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1030.0) internal successors, (9270), 9 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:41,274 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 427 flow. Second operand 8 states and 2982 transitions. [2023-09-01 08:04:41,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 117 transitions, 775 flow [2023-09-01 08:04:41,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 117 transitions, 740 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:04:41,317 INFO L231 Difference]: Finished difference. Result has 84 places, 92 transitions, 516 flow [2023-09-01 08:04:41,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=516, PETRI_PLACES=84, PETRI_TRANSITIONS=92} [2023-09-01 08:04:41,319 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 11 predicate places. [2023-09-01 08:04:41,319 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 92 transitions, 516 flow [2023-09-01 08:04:41,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 363.125) internal successors, (8715), 24 states have internal predecessors, (8715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:41,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:04:41,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:04:41,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-09-01 08:04:41,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-09-01 08:04:41,527 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-09-01 08:04:41,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:04:41,527 INFO L85 PathProgramCache]: Analyzing trace with hash -875630748, now seen corresponding path program 1 times [2023-09-01 08:04:41,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:04:41,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258197424] [2023-09-01 08:04:41,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:41,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:04:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:42,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:04:42,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:04:42,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258197424] [2023-09-01 08:04:42,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258197424] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:04:42,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975012120] [2023-09-01 08:04:42,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:42,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:04:42,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:04:42,024 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:04:42,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 08:04:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:42,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 33 conjunts are in the unsatisfiable core [2023-09-01 08:04:42,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:04:42,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:04:42,216 INFO L321 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-09-01 08:04:42,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 39 [2023-09-01 08:04:42,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:04:42,296 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-09-01 08:04:42,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-09-01 08:04:42,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:04:42,389 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-09-01 08:04:42,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:04:42,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:04:42,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:04:42,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:04:42,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:04:42,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:04:42,653 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:04:42,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-09-01 08:04:42,665 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:04:42,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1107 treesize of output 1075 [2023-09-01 08:04:42,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 59 [2023-09-01 08:04:42,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2023-09-01 08:04:42,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2023-09-01 08:04:42,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:04:42,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975012120] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:04:42,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:04:42,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-09-01 08:04:42,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710044482] [2023-09-01 08:04:42,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:04:42,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 08:04:42,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:04:42,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 08:04:42,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=434, Unknown=7, NotChecked=0, Total=552 [2023-09-01 08:04:44,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 1030 [2023-09-01 08:04:44,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 92 transitions, 516 flow. Second operand has 24 states, 24 states have (on average 363.125) internal successors, (8715), 24 states have internal predecessors, (8715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:44,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:04:44,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 1030 [2023-09-01 08:04:44,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:04:53,119 INFO L130 PetriNetUnfolder]: 61731/80582 cut-off events. [2023-09-01 08:04:53,120 INFO L131 PetriNetUnfolder]: For 29319/29396 co-relation queries the response was YES. [2023-09-01 08:04:53,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207773 conditions, 80582 events. 61731/80582 cut-off events. For 29319/29396 co-relation queries the response was YES. Maximal size of possible extension queue 6156. Compared 538351 event pairs, 22073 based on Foata normal form. 82/32010 useless extension candidates. Maximal degree in co-relation 207750. Up to 58689 conditions per place. [2023-09-01 08:04:53,774 INFO L137 encePairwiseOnDemand]: 1018/1030 looper letters, 92 selfloop transitions, 25 changer transitions 0/120 dead transitions. [2023-09-01 08:04:53,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 120 transitions, 839 flow [2023-09-01 08:04:53,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:04:53,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:04:53,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2981 transitions. [2023-09-01 08:04:53,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3617718446601942 [2023-09-01 08:04:53,779 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2981 transitions. [2023-09-01 08:04:53,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2981 transitions. [2023-09-01 08:04:53,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:04:53,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2981 transitions. [2023-09-01 08:04:53,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 372.625) internal successors, (2981), 8 states have internal predecessors, (2981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:53,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1030.0) internal successors, (9270), 9 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:53,788 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1030.0) internal successors, (9270), 9 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:53,788 INFO L175 Difference]: Start difference. First operand has 84 places, 92 transitions, 516 flow. Second operand 8 states and 2981 transitions. [2023-09-01 08:04:53,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 120 transitions, 839 flow [2023-09-01 08:04:53,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 120 transitions, 837 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-09-01 08:04:53,821 INFO L231 Difference]: Finished difference. Result has 92 places, 96 transitions, 592 flow [2023-09-01 08:04:53,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=592, PETRI_PLACES=92, PETRI_TRANSITIONS=96} [2023-09-01 08:04:53,822 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 19 predicate places. [2023-09-01 08:04:53,822 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 96 transitions, 592 flow [2023-09-01 08:04:53,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 363.125) internal successors, (8715), 24 states have internal predecessors, (8715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:53,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:04:53,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:04:53,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-09-01 08:04:54,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:04:54,025 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-09-01 08:04:54,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:04:54,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1374171565, now seen corresponding path program 1 times [2023-09-01 08:04:54,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:04:54,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678879463] [2023-09-01 08:04:54,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:54,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:04:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:54,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:04:54,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:04:54,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678879463] [2023-09-01 08:04:54,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678879463] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:04:54,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995748567] [2023-09-01 08:04:54,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:54,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:04:54,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:04:54,461 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:04:54,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 08:04:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:54,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 35 conjunts are in the unsatisfiable core [2023-09-01 08:04:54,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:04:54,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:04:54,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:04:54,653 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-09-01 08:04:54,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2023-09-01 08:04:54,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:04:54,746 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-09-01 08:04:54,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-09-01 08:04:54,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:04:54,848 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-09-01 08:04:54,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:04:54,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:04:54,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:04:54,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:04:54,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:04:54,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:04:54,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:04:54,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:04:57,197 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:04:57,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-09-01 08:04:57,210 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:04:57,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1099 treesize of output 1083 [2023-09-01 08:04:57,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 260 treesize of output 252 [2023-09-01 08:04:57,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 248 [2023-09-01 08:04:57,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 122 [2023-09-01 08:04:57,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 246 treesize of output 230 [2023-09-01 08:04:57,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:04:57,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995748567] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:04:57,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:04:57,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-09-01 08:04:57,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371272714] [2023-09-01 08:04:57,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:04:57,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-09-01 08:04:57,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:04:57,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-09-01 08:04:57,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=550, Unknown=10, NotChecked=0, Total=702 [2023-09-01 08:05:00,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:05:02,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:05:02,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 361 out of 1030 [2023-09-01 08:05:02,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 96 transitions, 592 flow. Second operand has 27 states, 27 states have (on average 362.14814814814815) internal successors, (9778), 27 states have internal predecessors, (9778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:02,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:02,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 361 of 1030 [2023-09-01 08:05:02,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:11,494 INFO L130 PetriNetUnfolder]: 59500/77476 cut-off events. [2023-09-01 08:05:11,495 INFO L131 PetriNetUnfolder]: For 45048/45130 co-relation queries the response was YES. [2023-09-01 08:05:11,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205319 conditions, 77476 events. 59500/77476 cut-off events. For 45048/45130 co-relation queries the response was YES. Maximal size of possible extension queue 5735. Compared 512673 event pairs, 13043 based on Foata normal form. 127/31077 useless extension candidates. Maximal degree in co-relation 205293. Up to 54727 conditions per place. [2023-09-01 08:05:11,969 INFO L137 encePairwiseOnDemand]: 1019/1030 looper letters, 121 selfloop transitions, 32 changer transitions 0/156 dead transitions. [2023-09-01 08:05:11,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 156 transitions, 1156 flow [2023-09-01 08:05:11,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:05:11,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:05:11,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2999 transitions. [2023-09-01 08:05:11,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36395631067961165 [2023-09-01 08:05:11,973 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2999 transitions. [2023-09-01 08:05:11,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2999 transitions. [2023-09-01 08:05:11,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:11,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2999 transitions. [2023-09-01 08:05:11,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 374.875) internal successors, (2999), 8 states have internal predecessors, (2999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:11,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1030.0) internal successors, (9270), 9 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:11,983 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1030.0) internal successors, (9270), 9 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:11,983 INFO L175 Difference]: Start difference. First operand has 92 places, 96 transitions, 592 flow. Second operand 8 states and 2999 transitions. [2023-09-01 08:05:11,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 156 transitions, 1156 flow [2023-09-01 08:05:12,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 156 transitions, 1142 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-09-01 08:05:12,019 INFO L231 Difference]: Finished difference. Result has 98 places, 108 transitions, 778 flow [2023-09-01 08:05:12,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=778, PETRI_PLACES=98, PETRI_TRANSITIONS=108} [2023-09-01 08:05:12,020 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 25 predicate places. [2023-09-01 08:05:12,020 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 108 transitions, 778 flow [2023-09-01 08:05:12,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 362.14814814814815) internal successors, (9778), 27 states have internal predecessors, (9778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:12,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:12,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:12,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 08:05:12,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:12,223 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-09-01 08:05:12,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:12,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1627700661, now seen corresponding path program 1 times [2023-09-01 08:05:12,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:12,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330792052] [2023-09-01 08:05:12,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:12,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:12,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:05:12,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:12,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330792052] [2023-09-01 08:05:12,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330792052] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:12,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:05:12,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:05:12,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450772486] [2023-09-01 08:05:12,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:12,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:05:12,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:12,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:05:12,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:05:12,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 422 out of 1030 [2023-09-01 08:05:12,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 108 transitions, 778 flow. Second operand has 3 states, 3 states have (on average 425.3333333333333) internal successors, (1276), 3 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:12,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:12,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 422 of 1030 [2023-09-01 08:05:12,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:23,315 INFO L130 PetriNetUnfolder]: 70833/96246 cut-off events. [2023-09-01 08:05:23,315 INFO L131 PetriNetUnfolder]: For 113747/114160 co-relation queries the response was YES. [2023-09-01 08:05:23,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271464 conditions, 96246 events. 70833/96246 cut-off events. For 113747/114160 co-relation queries the response was YES. Maximal size of possible extension queue 8142. Compared 735897 event pairs, 17643 based on Foata normal form. 408/42205 useless extension candidates. Maximal degree in co-relation 271435. Up to 57034 conditions per place. [2023-09-01 08:05:23,980 INFO L137 encePairwiseOnDemand]: 1025/1030 looper letters, 128 selfloop transitions, 3 changer transitions 0/140 dead transitions. [2023-09-01 08:05:23,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 140 transitions, 1179 flow [2023-09-01 08:05:23,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:05:23,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:05:23,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1344 transitions. [2023-09-01 08:05:23,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349514563106796 [2023-09-01 08:05:23,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1344 transitions. [2023-09-01 08:05:23,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1344 transitions. [2023-09-01 08:05:23,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:23,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1344 transitions. [2023-09-01 08:05:23,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 448.0) internal successors, (1344), 3 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:23,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:23,987 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:23,987 INFO L175 Difference]: Start difference. First operand has 98 places, 108 transitions, 778 flow. Second operand 3 states and 1344 transitions. [2023-09-01 08:05:23,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 140 transitions, 1179 flow [2023-09-01 08:05:24,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 140 transitions, 1159 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-09-01 08:05:24,097 INFO L231 Difference]: Finished difference. Result has 99 places, 110 transitions, 779 flow [2023-09-01 08:05:24,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=779, PETRI_PLACES=99, PETRI_TRANSITIONS=110} [2023-09-01 08:05:24,097 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 26 predicate places. [2023-09-01 08:05:24,097 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 110 transitions, 779 flow [2023-09-01 08:05:24,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 425.3333333333333) internal successors, (1276), 3 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:24,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:24,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:24,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 08:05:24,098 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-09-01 08:05:24,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:24,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1627700658, now seen corresponding path program 1 times [2023-09-01 08:05:24,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:24,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725607479] [2023-09-01 08:05:24,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:24,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:24,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:05:24,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:24,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725607479] [2023-09-01 08:05:24,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725607479] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:24,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:05:24,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:05:24,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953043840] [2023-09-01 08:05:24,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:24,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:05:24,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:24,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:05:24,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:05:24,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 422 out of 1030 [2023-09-01 08:05:24,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 110 transitions, 779 flow. Second operand has 3 states, 3 states have (on average 425.6666666666667) internal successors, (1277), 3 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:24,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:24,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 422 of 1030 [2023-09-01 08:05:24,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand