./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-chromosome-symm.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-chromosome-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c7fdb1595c27c144c3bf111946260cb3946663200a2d53f7fba5455031291c4f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 10:50:52,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:50:52,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:50:52,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:50:52,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:50:52,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:50:52,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:50:52,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:50:52,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:50:52,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:50:52,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:50:52,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:50:52,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:50:52,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:50:52,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:50:52,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:50:52,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:50:52,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:50:52,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:50:52,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:50:52,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:50:52,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:50:52,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:50:52,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:50:52,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:50:52,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:50:52,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:50:52,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:50:52,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:50:52,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:50:52,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:50:52,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:50:52,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:50:52,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:50:52,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:50:52,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:50:52,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:50:52,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:50:52,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:50:52,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:50:52,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:50:52,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:50:52,369 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:50:52,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:50:52,371 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:50:52,371 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:50:52,372 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:50:52,372 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:50:52,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:50:52,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:50:52,373 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:50:52,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:50:52,374 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:50:52,374 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:50:52,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:50:52,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:50:52,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:50:52,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:50:52,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:50:52,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:50:52,375 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:50:52,375 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:50:52,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:50:52,376 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:50:52,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:50:52,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:50:52,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:50:52,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:50:52,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:50:52,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:50:52,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:50:52,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:50:52,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:50:52,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:50:52,378 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:50:52,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:50:52,379 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:50:52,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:50:52,379 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:50:52,379 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7fdb1595c27c144c3bf111946260cb3946663200a2d53f7fba5455031291c4f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:50:52,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:50:52,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:50:52,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:50:52,671 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:50:52,671 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:50:52,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-symm.wvr.c [2023-08-30 10:50:53,785 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:50:53,997 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:50:53,998 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-symm.wvr.c [2023-08-30 10:50:54,003 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/704d7089b/87786a59936c440ab7be39c99ae8d164/FLAG20eef3f12 [2023-08-30 10:50:54,014 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/704d7089b/87786a59936c440ab7be39c99ae8d164 [2023-08-30 10:50:54,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:50:54,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:50:54,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:50:54,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:50:54,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:50:54,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:50:54" (1/1) ... [2023-08-30 10:50:54,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eba8237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:54, skipping insertion in model container [2023-08-30 10:50:54,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:50:54" (1/1) ... [2023-08-30 10:50:54,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:50:54,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:50:54,174 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-symm.wvr.c[2695,2708] [2023-08-30 10:50:54,179 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:50:54,187 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:50:54,206 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-symm.wvr.c[2695,2708] [2023-08-30 10:50:54,210 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:50:54,222 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:50:54,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:54 WrapperNode [2023-08-30 10:50:54,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:50:54,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:50:54,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:50:54,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:50:54,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:54" (1/1) ... [2023-08-30 10:50:54,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:54" (1/1) ... [2023-08-30 10:50:54,264 INFO L138 Inliner]: procedures = 25, calls = 37, calls flagged for inlining = 15, calls inlined = 19, statements flattened = 234 [2023-08-30 10:50:54,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:50:54,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:50:54,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:50:54,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:50:54,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:54" (1/1) ... [2023-08-30 10:50:54,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:54" (1/1) ... [2023-08-30 10:50:54,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:54" (1/1) ... [2023-08-30 10:50:54,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:54" (1/1) ... [2023-08-30 10:50:54,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:54" (1/1) ... [2023-08-30 10:50:54,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:54" (1/1) ... [2023-08-30 10:50:54,294 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:54" (1/1) ... [2023-08-30 10:50:54,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:54" (1/1) ... [2023-08-30 10:50:54,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:50:54,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:50:54,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:50:54,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:50:54,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:54" (1/1) ... [2023-08-30 10:50:54,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:50:54,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:50:54,380 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 10:50:54,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 10:50:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:50:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:50:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:50:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:50:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 10:50:54,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 10:50:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 10:50:54,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 10:50:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:50:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 10:50:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:50:54,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:50:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:50:54,420 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 10:50:54,505 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:50:54,507 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:50:54,998 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:50:55,015 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:50:55,018 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 10:50:55,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:50:55 BoogieIcfgContainer [2023-08-30 10:50:55,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:50:55,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:50:55,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:50:55,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:50:55,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:50:54" (1/3) ... [2023-08-30 10:50:55,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5301f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:50:55, skipping insertion in model container [2023-08-30 10:50:55,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:54" (2/3) ... [2023-08-30 10:50:55,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5301f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:50:55, skipping insertion in model container [2023-08-30 10:50:55,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:50:55" (3/3) ... [2023-08-30 10:50:55,030 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-symm.wvr.c [2023-08-30 10:50:55,038 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:50:55,046 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:50:55,047 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-08-30 10:50:55,047 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:50:55,194 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 10:50:55,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 289 transitions, 594 flow [2023-08-30 10:50:55,379 INFO L130 PetriNetUnfolder]: 25/287 cut-off events. [2023-08-30 10:50:55,380 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 10:50:55,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 287 events. 25/287 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 504 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 183. Up to 2 conditions per place. [2023-08-30 10:50:55,390 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 289 transitions, 594 flow [2023-08-30 10:50:55,401 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 259 transitions, 527 flow [2023-08-30 10:50:55,405 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:50:55,422 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 259 transitions, 527 flow [2023-08-30 10:50:55,430 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 259 transitions, 527 flow [2023-08-30 10:50:55,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 259 transitions, 527 flow [2023-08-30 10:50:55,499 INFO L130 PetriNetUnfolder]: 22/259 cut-off events. [2023-08-30 10:50:55,499 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:50:55,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 259 events. 22/259 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 395 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 183. Up to 2 conditions per place. [2023-08-30 10:50:55,511 INFO L119 LiptonReduction]: Number of co-enabled transitions 12212 [2023-08-30 10:51:08,321 INFO L134 LiptonReduction]: Checked pairs total: 12635 [2023-08-30 10:51:08,321 INFO L136 LiptonReduction]: Total number of compositions: 326 [2023-08-30 10:51:08,333 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:51:08,339 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;@3926c3a3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:51:08,339 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-08-30 10:51:08,342 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 10:51:08,343 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:51:08,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:51:08,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 10:51:08,344 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 10:51:08,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:51:08,349 INFO L85 PathProgramCache]: Analyzing trace with hash 37235, now seen corresponding path program 1 times [2023-08-30 10:51:08,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:51:08,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54975071] [2023-08-30 10:51:08,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:08,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:51:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:08,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:51:08,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:51:08,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54975071] [2023-08-30 10:51:08,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54975071] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:51:08,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:51:08,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:51:08,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257188694] [2023-08-30 10:51:08,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:51:08,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:51:08,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:51:08,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:51:08,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:51:08,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 615 [2023-08-30 10:51:08,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:08,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:51:08,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 615 [2023-08-30 10:51:08,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:51:09,067 INFO L130 PetriNetUnfolder]: 557/959 cut-off events. [2023-08-30 10:51:09,068 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2023-08-30 10:51:09,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1982 conditions, 959 events. 557/959 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4647 event pairs, 474 based on Foata normal form. 0/435 useless extension candidates. Maximal degree in co-relation 900. Up to 483 conditions per place. [2023-08-30 10:51:09,074 INFO L137 encePairwiseOnDemand]: 602/615 looper letters, 57 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2023-08-30 10:51:09,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 61 transitions, 262 flow [2023-08-30 10:51:09,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:51:09,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:51:09,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 858 transitions. [2023-08-30 10:51:09,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46504065040650405 [2023-08-30 10:51:09,091 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 858 transitions. [2023-08-30 10:51:09,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 858 transitions. [2023-08-30 10:51:09,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:51:09,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 858 transitions. [2023-08-30 10:51:09,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:09,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:09,108 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:09,110 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 85 flow. Second operand 3 states and 858 transitions. [2023-08-30 10:51:09,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 61 transitions, 262 flow [2023-08-30 10:51:09,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 61 transitions, 252 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 10:51:09,116 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 106 flow [2023-08-30 10:51:09,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2023-08-30 10:51:09,121 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -4 predicate places. [2023-08-30 10:51:09,121 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 106 flow [2023-08-30 10:51:09,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:09,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:51:09,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 10:51:09,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:51:09,123 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 10:51:09,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:51:09,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1156707, now seen corresponding path program 1 times [2023-08-30 10:51:09,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:51:09,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192313229] [2023-08-30 10:51:09,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:09,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:51:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:09,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:51:09,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:51:09,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192313229] [2023-08-30 10:51:09,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192313229] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:51:09,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:51:09,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:51:09,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428984221] [2023-08-30 10:51:09,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:51:09,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:51:09,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:51:09,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:51:09,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:51:09,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 615 [2023-08-30 10:51:09,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:09,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:51:09,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 615 [2023-08-30 10:51:09,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:51:09,387 INFO L130 PetriNetUnfolder]: 557/957 cut-off events. [2023-08-30 10:51:09,387 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-30 10:51:09,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1973 conditions, 957 events. 557/957 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 4763 event pairs, 474 based on Foata normal form. 0/439 useless extension candidates. Maximal degree in co-relation 975. Up to 957 conditions per place. [2023-08-30 10:51:09,392 INFO L137 encePairwiseOnDemand]: 612/615 looper letters, 33 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-08-30 10:51:09,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 34 transitions, 166 flow [2023-08-30 10:51:09,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:51:09,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:51:09,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 816 transitions. [2023-08-30 10:51:09,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44227642276422763 [2023-08-30 10:51:09,397 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 816 transitions. [2023-08-30 10:51:09,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 816 transitions. [2023-08-30 10:51:09,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:51:09,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 816 transitions. [2023-08-30 10:51:09,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:09,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:09,404 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:09,405 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 106 flow. Second operand 3 states and 816 transitions. [2023-08-30 10:51:09,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 34 transitions, 166 flow [2023-08-30 10:51:09,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:51:09,408 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 92 flow [2023-08-30 10:51:09,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-08-30 10:51:09,410 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -6 predicate places. [2023-08-30 10:51:09,410 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 92 flow [2023-08-30 10:51:09,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:09,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:51:09,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 10:51:09,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 10:51:09,412 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 10:51:09,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:51:09,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1156750, now seen corresponding path program 1 times [2023-08-30 10:51:09,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:51:09,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617227546] [2023-08-30 10:51:09,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:09,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:51:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:09,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:51:09,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:51:09,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617227546] [2023-08-30 10:51:09,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617227546] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:51:09,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666581740] [2023-08-30 10:51:09,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:09,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:51:09,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:51:09,522 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:51:09,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 10:51:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:09,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:51:09,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:51:09,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:51:09,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:51:09,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:51:09,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666581740] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:51:09,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:51:09,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 10:51:09,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200320028] [2023-08-30 10:51:09,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:51:09,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:51:09,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:51:09,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:51:09,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:51:09,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 615 [2023-08-30 10:51:09,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 92 flow. Second operand has 7 states, 7 states have (on average 262.14285714285717) internal successors, (1835), 7 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:09,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:51:09,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 615 [2023-08-30 10:51:09,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:51:10,331 INFO L130 PetriNetUnfolder]: 1391/2388 cut-off events. [2023-08-30 10:51:10,332 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-08-30 10:51:10,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4904 conditions, 2388 events. 1391/2388 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 13344 event pairs, 1185 based on Foata normal form. 0/1091 useless extension candidates. Maximal degree in co-relation 4896. Up to 481 conditions per place. [2023-08-30 10:51:10,344 INFO L137 encePairwiseOnDemand]: 609/615 looper letters, 130 selfloop transitions, 13 changer transitions 0/143 dead transitions. [2023-08-30 10:51:10,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 143 transitions, 630 flow [2023-08-30 10:51:10,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:51:10,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:51:10,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1715 transitions. [2023-08-30 10:51:10,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46476964769647694 [2023-08-30 10:51:10,349 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1715 transitions. [2023-08-30 10:51:10,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1715 transitions. [2023-08-30 10:51:10,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:51:10,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1715 transitions. [2023-08-30 10:51:10,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 285.8333333333333) internal successors, (1715), 6 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:10,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 615.0) internal successors, (4305), 7 states have internal predecessors, (4305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:10,379 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 615.0) internal successors, (4305), 7 states have internal predecessors, (4305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:10,380 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 92 flow. Second operand 6 states and 1715 transitions. [2023-08-30 10:51:10,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 143 transitions, 630 flow [2023-08-30 10:51:10,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 143 transitions, 629 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:51:10,385 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 184 flow [2023-08-30 10:51:10,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-08-30 10:51:10,386 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2023-08-30 10:51:10,387 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 184 flow [2023-08-30 10:51:10,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 262.14285714285717) internal successors, (1835), 7 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:10,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:51:10,388 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 10:51:10,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 10:51:10,594 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 [2023-08-30 10:51:10,594 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 10:51:10,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:51:10,595 INFO L85 PathProgramCache]: Analyzing trace with hash 102124958, now seen corresponding path program 2 times [2023-08-30 10:51:10,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:51:10,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279976276] [2023-08-30 10:51:10,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:10,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:51:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:10,692 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:51:10,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:51:10,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279976276] [2023-08-30 10:51:10,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279976276] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:51:10,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44097568] [2023-08-30 10:51:10,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:51:10,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:51:10,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:51:10,700 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:51:10,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 10:51:10,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:51:10,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:51:10,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 10:51:10,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:51:10,799 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 10:51:10,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:51:10,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44097568] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:51:10,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:51:10,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 10:51:10,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561055903] [2023-08-30 10:51:10,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:51:10,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:51:10,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:51:10,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:51:10,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:51:10,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 615 [2023-08-30 10:51:10,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:10,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:51:10,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 615 [2023-08-30 10:51:10,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:51:11,137 INFO L130 PetriNetUnfolder]: 1391/2386 cut-off events. [2023-08-30 10:51:11,138 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2023-08-30 10:51:11,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4925 conditions, 2386 events. 1391/2386 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 14012 event pairs, 1185 based on Foata normal form. 2/1096 useless extension candidates. Maximal degree in co-relation 4913. Up to 2386 conditions per place. [2023-08-30 10:51:11,151 INFO L137 encePairwiseOnDemand]: 612/615 looper letters, 40 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-08-30 10:51:11,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 41 transitions, 246 flow [2023-08-30 10:51:11,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:51:11,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:51:11,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 820 transitions. [2023-08-30 10:51:11,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-30 10:51:11,161 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 820 transitions. [2023-08-30 10:51:11,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 820 transitions. [2023-08-30 10:51:11,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:51:11,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 820 transitions. [2023-08-30 10:51:11,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:11,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:11,174 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:11,174 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 184 flow. Second operand 3 states and 820 transitions. [2023-08-30 10:51:11,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 41 transitions, 246 flow [2023-08-30 10:51:11,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 201 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-30 10:51:11,179 INFO L231 Difference]: Finished difference. Result has 37 places, 41 transitions, 121 flow [2023-08-30 10:51:11,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=37, PETRI_TRANSITIONS=41} [2023-08-30 10:51:11,181 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -4 predicate places. [2023-08-30 10:51:11,181 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 41 transitions, 121 flow [2023-08-30 10:51:11,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:11,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:51:11,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:51:11,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 10:51:11,387 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 [2023-08-30 10:51:11,388 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 10:51:11,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:51:11,389 INFO L85 PathProgramCache]: Analyzing trace with hash -169429443, now seen corresponding path program 1 times [2023-08-30 10:51:11,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:51:11,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607393784] [2023-08-30 10:51:11,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:11,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:51:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:11,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:51:11,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:51:11,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607393784] [2023-08-30 10:51:11,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607393784] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:51:11,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:51:11,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:51:11,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367077473] [2023-08-30 10:51:11,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:51:11,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:51:11,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:51:11,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:51:11,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:51:11,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 615 [2023-08-30 10:51:11,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 41 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:11,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:51:11,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 615 [2023-08-30 10:51:11,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:51:11,801 INFO L130 PetriNetUnfolder]: 1113/1911 cut-off events. [2023-08-30 10:51:11,801 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-08-30 10:51:11,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3927 conditions, 1911 events. 1113/1911 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 10821 event pairs, 948 based on Foata normal form. 1/876 useless extension candidates. Maximal degree in co-relation 3918. Up to 1907 conditions per place. [2023-08-30 10:51:11,811 INFO L137 encePairwiseOnDemand]: 610/615 looper letters, 33 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2023-08-30 10:51:11,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 40 transitions, 197 flow [2023-08-30 10:51:11,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:51:11,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:51:11,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 810 transitions. [2023-08-30 10:51:11,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2023-08-30 10:51:11,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 810 transitions. [2023-08-30 10:51:11,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 810 transitions. [2023-08-30 10:51:11,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:51:11,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 810 transitions. [2023-08-30 10:51:11,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.0) internal successors, (810), 3 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:11,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:11,822 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:11,822 INFO L175 Difference]: Start difference. First operand has 37 places, 41 transitions, 121 flow. Second operand 3 states and 810 transitions. [2023-08-30 10:51:11,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 40 transitions, 197 flow [2023-08-30 10:51:11,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 40 transitions, 196 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:51:11,823 INFO L231 Difference]: Finished difference. Result has 39 places, 40 transitions, 139 flow [2023-08-30 10:51:11,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=39, PETRI_TRANSITIONS=40} [2023-08-30 10:51:11,824 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -2 predicate places. [2023-08-30 10:51:11,824 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 40 transitions, 139 flow [2023-08-30 10:51:11,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:11,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:51:11,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:51:11,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 10:51:11,825 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 10:51:11,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:51:11,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1722786559, now seen corresponding path program 1 times [2023-08-30 10:51:11,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:51:11,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730195685] [2023-08-30 10:51:11,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:11,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:51:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:11,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:51:11,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:51:11,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730195685] [2023-08-30 10:51:11,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730195685] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:51:11,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:51:11,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:51:11,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457213978] [2023-08-30 10:51:11,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:51:11,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:51:11,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:51:11,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:51:11,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:51:11,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 615 [2023-08-30 10:51:11,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 40 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:11,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:51:11,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 615 [2023-08-30 10:51:11,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:51:12,317 INFO L130 PetriNetUnfolder]: 1905/3271 cut-off events. [2023-08-30 10:51:12,317 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-08-30 10:51:12,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6717 conditions, 3271 events. 1905/3271 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 21197 event pairs, 948 based on Foata normal form. 0/1495 useless extension candidates. Maximal degree in co-relation 6706. Up to 1912 conditions per place. [2023-08-30 10:51:12,336 INFO L137 encePairwiseOnDemand]: 611/615 looper letters, 58 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-08-30 10:51:12,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 60 transitions, 302 flow [2023-08-30 10:51:12,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:51:12,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:51:12,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 846 transitions. [2023-08-30 10:51:12,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585365853658537 [2023-08-30 10:51:12,340 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 846 transitions. [2023-08-30 10:51:12,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 846 transitions. [2023-08-30 10:51:12,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:51:12,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 846 transitions. [2023-08-30 10:51:12,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.0) internal successors, (846), 3 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:12,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:12,347 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:12,347 INFO L175 Difference]: Start difference. First operand has 39 places, 40 transitions, 139 flow. Second operand 3 states and 846 transitions. [2023-08-30 10:51:12,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 60 transitions, 302 flow [2023-08-30 10:51:12,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 60 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:51:12,349 INFO L231 Difference]: Finished difference. Result has 40 places, 41 transitions, 139 flow [2023-08-30 10:51:12,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=40, PETRI_TRANSITIONS=41} [2023-08-30 10:51:12,350 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2023-08-30 10:51:12,350 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 41 transitions, 139 flow [2023-08-30 10:51:12,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:12,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:51:12,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:51:12,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 10:51:12,351 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 10:51:12,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:51:12,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1722786499, now seen corresponding path program 1 times [2023-08-30 10:51:12,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:51:12,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476252261] [2023-08-30 10:51:12,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:12,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:51:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:12,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:51:12,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:51:12,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476252261] [2023-08-30 10:51:12,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476252261] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:51:12,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440403925] [2023-08-30 10:51:12,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:12,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:51:12,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:51:12,429 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:51:12,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 10:51:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:12,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 10:51:12,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:51:12,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:51:12,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:51:12,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:51:12,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440403925] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:51:12,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:51:12,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-08-30 10:51:12,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673156903] [2023-08-30 10:51:12,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:51:12,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:51:12,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:51:12,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:51:12,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:51:12,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 615 [2023-08-30 10:51:12,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 139 flow. Second operand has 8 states, 8 states have (on average 257.125) internal successors, (2057), 8 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:12,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:51:12,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 615 [2023-08-30 10:51:12,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:51:12,860 INFO L130 PetriNetUnfolder]: 477/826 cut-off events. [2023-08-30 10:51:12,860 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2023-08-30 10:51:12,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1818 conditions, 826 events. 477/826 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 3846 event pairs, 419 based on Foata normal form. 6/424 useless extension candidates. Maximal degree in co-relation 1807. Up to 819 conditions per place. [2023-08-30 10:51:12,865 INFO L137 encePairwiseOnDemand]: 610/615 looper letters, 28 selfloop transitions, 10 changer transitions 0/38 dead transitions. [2023-08-30 10:51:12,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 200 flow [2023-08-30 10:51:12,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:51:12,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:51:12,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1573 transitions. [2023-08-30 10:51:12,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42628726287262875 [2023-08-30 10:51:12,870 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1573 transitions. [2023-08-30 10:51:12,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1573 transitions. [2023-08-30 10:51:12,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:51:12,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1573 transitions. [2023-08-30 10:51:12,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 262.1666666666667) internal successors, (1573), 6 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:12,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 615.0) internal successors, (4305), 7 states have internal predecessors, (4305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:12,881 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 615.0) internal successors, (4305), 7 states have internal predecessors, (4305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:12,881 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 139 flow. Second operand 6 states and 1573 transitions. [2023-08-30 10:51:12,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 200 flow [2023-08-30 10:51:12,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 38 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:51:12,883 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 160 flow [2023-08-30 10:51:12,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2023-08-30 10:51:12,884 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2023-08-30 10:51:12,884 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 160 flow [2023-08-30 10:51:12,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 257.125) internal successors, (2057), 8 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:12,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:51:12,885 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:51:12,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 10:51:13,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:51:13,090 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 10:51:13,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:51:13,091 INFO L85 PathProgramCache]: Analyzing trace with hash -773726591, now seen corresponding path program 2 times [2023-08-30 10:51:13,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:51:13,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065074275] [2023-08-30 10:51:13,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:13,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:51:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:13,230 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 10:51:13,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:51:13,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065074275] [2023-08-30 10:51:13,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065074275] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:51:13,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936524120] [2023-08-30 10:51:13,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:51:13,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:51:13,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:51:13,232 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:51:13,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 10:51:13,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:51:13,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:51:13,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 10:51:13,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:51:13,428 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 10:51:13,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:51:13,498 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 10:51:13,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936524120] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:51:13,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:51:13,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2023-08-30 10:51:13,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394177546] [2023-08-30 10:51:13,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:51:13,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 10:51:13,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:51:13,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 10:51:13,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-08-30 10:51:13,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 615 [2023-08-30 10:51:13,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 160 flow. Second operand has 17 states, 17 states have (on average 256.52941176470586) internal successors, (4361), 17 states have internal predecessors, (4361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:13,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:51:13,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 615 [2023-08-30 10:51:13,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:51:13,840 INFO L130 PetriNetUnfolder]: 477/828 cut-off events. [2023-08-30 10:51:13,841 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-30 10:51:13,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1828 conditions, 828 events. 477/828 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 3846 event pairs, 419 based on Foata normal form. 2/422 useless extension candidates. Maximal degree in co-relation 1813. Up to 819 conditions per place. [2023-08-30 10:51:13,851 INFO L137 encePairwiseOnDemand]: 610/615 looper letters, 28 selfloop transitions, 12 changer transitions 0/40 dead transitions. [2023-08-30 10:51:13,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 40 transitions, 248 flow [2023-08-30 10:51:13,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:51:13,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:51:13,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1826 transitions. [2023-08-30 10:51:13,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42415795586527294 [2023-08-30 10:51:13,857 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1826 transitions. [2023-08-30 10:51:13,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1826 transitions. [2023-08-30 10:51:13,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:51:13,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1826 transitions. [2023-08-30 10:51:13,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 260.85714285714283) internal successors, (1826), 7 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:13,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 615.0) internal successors, (4920), 8 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:13,870 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 615.0) internal successors, (4920), 8 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:13,870 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 160 flow. Second operand 7 states and 1826 transitions. [2023-08-30 10:51:13,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 40 transitions, 248 flow [2023-08-30 10:51:13,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 40 transitions, 228 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 10:51:13,873 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 182 flow [2023-08-30 10:51:13,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=182, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-08-30 10:51:13,875 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2023-08-30 10:51:13,875 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 182 flow [2023-08-30 10:51:13,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 256.52941176470586) internal successors, (4361), 17 states have internal predecessors, (4361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:13,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:51:13,889 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:51:13,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 10:51:14,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:51:14,095 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 10:51:14,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:51:14,095 INFO L85 PathProgramCache]: Analyzing trace with hash -157181373, now seen corresponding path program 3 times [2023-08-30 10:51:14,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:51:14,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759536036] [2023-08-30 10:51:14,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:14,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:51:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:15,442 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:51:15,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:51:15,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759536036] [2023-08-30 10:51:15,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759536036] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:51:15,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986590871] [2023-08-30 10:51:15,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 10:51:15,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:51:15,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:51:15,445 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:51:15,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 10:51:15,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-30 10:51:15,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:51:15,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-30 10:51:15,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:51:15,663 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 [2023-08-30 10:51:15,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:51:15,710 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 21 treesize of output 20 [2023-08-30 10:51:15,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:51:15,753 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 21 treesize of output 20 [2023-08-30 10:51:15,798 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-30 10:51:15,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 21 treesize of output 24 [2023-08-30 10:51:15,877 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-30 10:51:15,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 25 treesize of output 28 [2023-08-30 10:51:15,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:51:15,933 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 [2023-08-30 10:51:15,948 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-30 10:51:15,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:51:27,560 INFO L321 Elim1Store]: treesize reduction 212, result has 30.5 percent of original size [2023-08-30 10:51:27,561 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 5 case distinctions, treesize of input 50 treesize of output 103 [2023-08-30 10:51:27,633 INFO L321 Elim1Store]: treesize reduction 24, result has 70.4 percent of original size [2023-08-30 10:51:27,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 102 treesize of output 122 [2023-08-30 10:51:27,744 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 5 treesize of output 3 [2023-08-30 10:51:27,800 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-30 10:51:27,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986590871] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:51:27,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:51:27,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 30 [2023-08-30 10:51:27,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771027908] [2023-08-30 10:51:27,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:51:27,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 10:51:27,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:51:27,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 10:51:27,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=795, Unknown=7, NotChecked=0, Total=992 [2023-08-30 10:51:28,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:51:32,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:51:33,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:51:35,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:51:37,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:51:40,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:51:42,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:51:44,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:51:46,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:51:47,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:51:49,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:51:51,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:51:53,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:51:56,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:51:58,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:52:00,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:52:02,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:52:05,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:52:07,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:52:09,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:52:11,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:52:14,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:52:16,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:52:18,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:52:20,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:52:23,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:52:25,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:52:25,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 615 [2023-08-30 10:52:25,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 182 flow. Second operand has 32 states, 32 states have (on average 219.21875) internal successors, (7015), 32 states have internal predecessors, (7015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:52:25,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:52:25,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 615 [2023-08-30 10:52:25,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:52:25,761 INFO L130 PetriNetUnfolder]: 540/1026 cut-off events. [2023-08-30 10:52:25,761 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2023-08-30 10:52:25,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2248 conditions, 1026 events. 540/1026 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5933 event pairs, 211 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 2232. Up to 658 conditions per place. [2023-08-30 10:52:25,767 INFO L137 encePairwiseOnDemand]: 601/615 looper letters, 40 selfloop transitions, 28 changer transitions 0/68 dead transitions. [2023-08-30 10:52:25,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 386 flow [2023-08-30 10:52:25,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 10:52:25,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 10:52:25,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2902 transitions. [2023-08-30 10:52:25,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629768605378361 [2023-08-30 10:52:25,775 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2902 transitions. [2023-08-30 10:52:25,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2902 transitions. [2023-08-30 10:52:25,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:52:25,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2902 transitions. [2023-08-30 10:52:25,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 223.23076923076923) internal successors, (2902), 13 states have internal predecessors, (2902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:52:25,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 615.0) internal successors, (8610), 14 states have internal predecessors, (8610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:52:25,792 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 615.0) internal successors, (8610), 14 states have internal predecessors, (8610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:52:25,792 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 182 flow. Second operand 13 states and 2902 transitions. [2023-08-30 10:52:25,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 386 flow [2023-08-30 10:52:25,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 68 transitions, 366 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 10:52:25,795 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 274 flow [2023-08-30 10:52:25,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=274, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2023-08-30 10:52:25,796 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2023-08-30 10:52:25,796 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 274 flow [2023-08-30 10:52:25,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 219.21875) internal successors, (7015), 32 states have internal predecessors, (7015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:52:25,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:52:25,798 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:52:25,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 10:52:26,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:52:26,004 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 10:52:26,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:52:26,004 INFO L85 PathProgramCache]: Analyzing trace with hash -157181320, now seen corresponding path program 1 times [2023-08-30 10:52:26,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:52:26,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871049414] [2023-08-30 10:52:26,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:52:26,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:52:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:52:26,831 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 10:52:26,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:52:26,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871049414] [2023-08-30 10:52:26,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871049414] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:52:26,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432361212] [2023-08-30 10:52:26,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:52:26,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:52:26,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:52:26,833 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:52:26,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 10:52:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:52:26,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-30 10:52:26,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:52:26,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:52:26,981 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2023-08-30 10:52:26,982 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 2 case distinctions, treesize of input 12 treesize of output 24 [2023-08-30 10:52:27,022 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 [2023-08-30 10:52:27,058 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 19 treesize of output 18 [2023-08-30 10:52:27,099 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 19 treesize of output 18 [2023-08-30 10:52:27,141 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 19 treesize of output 18 [2023-08-30 10:52:27,187 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 19 treesize of output 18 [2023-08-30 10:52:27,243 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:52:27,244 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 [2023-08-30 10:52:27,313 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 [2023-08-30 10:52:27,354 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 [2023-08-30 10:52:27,394 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 [2023-08-30 10:52:27,444 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 [2023-08-30 10:52:27,480 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 [2023-08-30 10:52:27,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:52:27,511 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 [2023-08-30 10:52:27,609 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:52:27,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:52:27,963 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_372 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_372))) (let ((.cse1 (select (select .cse0 ~o_2~0.base) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< (select (select .cse0 c_~o_0~0.base) c_~o_0~0.offset) (+ .cse1 2147483648)) (< .cse1 0) (< 0 .cse1))))) (forall ((v_ArrVal_372 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_372))) (let ((.cse3 (select (select .cse2 ~o_2~0.base) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< (select (select .cse2 c_~o_0~0.base) c_~o_0~0.offset) (+ .cse3 2147483648)) (< 9223372039002259455 .cse3) (<= .cse3 0)))))) is different from false [2023-08-30 10:52:27,994 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_371 (Array Int Int)) (v_ArrVal_372 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_371) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_372))) (let ((.cse0 (select (select .cse1 ~o_2~0.base) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< .cse0 0) (< (select (select .cse1 c_~o_0~0.base) c_~o_0~0.offset) (+ 2147483648 .cse0)) (< 0 .cse0))))) (forall ((v_ArrVal_371 (Array Int Int)) (v_ArrVal_372 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_371) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_372))) (let ((.cse2 (select (select .cse3 ~o_2~0.base) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (<= .cse2 0) (< (select (select .cse3 c_~o_0~0.base) c_~o_0~0.offset) (+ 2147483648 .cse2)) (< 9223372039002259455 .cse2)))))) is different from false [2023-08-30 10:52:42,143 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:52:42,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 469 treesize of output 255 [2023-08-30 10:52:42,221 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:52:42,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 7303 treesize of output 7123 [2023-08-30 10:52:42,499 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:52:42,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1251 treesize of output 1231 [2023-08-30 10:52:42,548 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:52:42,549 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 1161 treesize of output 1090 [2023-08-30 10:52:42,597 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:52:42,597 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 1081 treesize of output 1050 [2023-08-30 10:52:42,650 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:52:42,650 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 1041 treesize of output 1010 [2023-08-30 10:52:42,701 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:52:42,702 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 1001 treesize of output 990 [2023-08-30 10:56:01,187 WARN L222 SmtUtils]: Spent 10.86s on a formula simplification. DAG size of input: 532 DAG size of output: 639 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-08-30 10:56:07,045 WARN L222 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 441 DAG size of output: 443 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15