./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-chromosome-subst.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-subst.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 b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 --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 10:50:50,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:50:50,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:50:50,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:50:50,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:50:50,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:50:50,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:50:50,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:50:50,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:50:50,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:50:50,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:50:50,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:50:50,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:50:50,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:50:50,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:50:50,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:50:50,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:50:50,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:50:50,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:50:50,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:50:50,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:50:50,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:50:50,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:50:50,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:50:50,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:50:50,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:50:50,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:50:50,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:50:50,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:50:50,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:50:50,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:50:50,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:50:50,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:50:50,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:50:50,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:50:50,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:50:50,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:50:50,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:50:50,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:50:50,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:50:50,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:50:50,509 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:50:50,538 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:50:50,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:50:50,540 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:50:50,540 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:50:50,541 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:50:50,541 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:50:50,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:50:50,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:50:50,543 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:50:50,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:50:50,544 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:50:50,544 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:50:50,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:50:50,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:50:50,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:50:50,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:50:50,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:50:50,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:50:50,545 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:50:50,546 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:50:50,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:50:50,546 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:50:50,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:50:50,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:50:50,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:50:50,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:50:50,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:50:50,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:50:50,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:50:50,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:50:50,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:50:50,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:50:50,548 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:50:50,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:50:50,549 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:50:50,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:50:50,549 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:50:50,549 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:50:50,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:50:50,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:50:50,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:50:50,865 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:50:50,865 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:50:50,867 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c [2023-08-30 10:50:51,948 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:50:52,159 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:50:52,160 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c [2023-08-30 10:50:52,165 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c29bb02c/8f2ab63dc5d64e0ca3e0690ddcd8548b/FLAG61cfc21d0 [2023-08-30 10:50:52,176 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c29bb02c/8f2ab63dc5d64e0ca3e0690ddcd8548b [2023-08-30 10:50:52,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:50:52,179 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:50:52,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:50:52,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:50:52,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:50:52,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:50:52" (1/1) ... [2023-08-30 10:50:52,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dc60a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:52, skipping insertion in model container [2023-08-30 10:50:52,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:50:52" (1/1) ... [2023-08-30 10:50:52,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:50:52,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:50:52,400 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-subst.wvr.c[3097,3110] [2023-08-30 10:50:52,414 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:50:52,425 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:50:52,464 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-subst.wvr.c[3097,3110] [2023-08-30 10:50:52,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:50:52,489 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:50:52,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:52 WrapperNode [2023-08-30 10:50:52,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:50:52,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:50:52,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:50:52,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:50:52,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:52" (1/1) ... [2023-08-30 10:50:52,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:52" (1/1) ... [2023-08-30 10:50:52,577 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 335 [2023-08-30 10:50:52,577 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:50:52,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:50:52,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:50:52,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:50:52,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:52" (1/1) ... [2023-08-30 10:50:52,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:52" (1/1) ... [2023-08-30 10:50:52,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:52" (1/1) ... [2023-08-30 10:50:52,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:52" (1/1) ... [2023-08-30 10:50:52,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:52" (1/1) ... [2023-08-30 10:50:52,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:52" (1/1) ... [2023-08-30 10:50:52,624 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:52" (1/1) ... [2023-08-30 10:50:52,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:52" (1/1) ... [2023-08-30 10:50:52,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:50:52,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:50:52,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:50:52,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:50:52,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:52" (1/1) ... [2023-08-30 10:50:52,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:50:52,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:50:52,665 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 10:50:52,688 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 10:50:52,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:50:52,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:50:52,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:50:52,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:50:52,704 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 10:50:52,705 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 10:50:52,705 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 10:50:52,705 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 10:50:52,705 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 10:50:52,705 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 10:50:52,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:50:52,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 10:50:52,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:50:52,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:50:52,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:50:52,708 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 10:50:52,843 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:50:52,844 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:50:53,337 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:50:53,352 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:50:53,353 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 10:50:53,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:50:53 BoogieIcfgContainer [2023-08-30 10:50:53,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:50:53,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:50:53,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:50:53,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:50:53,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:50:52" (1/3) ... [2023-08-30 10:50:53,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b88248e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:50:53, skipping insertion in model container [2023-08-30 10:50:53,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:52" (2/3) ... [2023-08-30 10:50:53,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b88248e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:50:53, skipping insertion in model container [2023-08-30 10:50:53,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:50:53" (3/3) ... [2023-08-30 10:50:53,362 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2023-08-30 10:50:53,368 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:50:53,376 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:50:53,376 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-08-30 10:50:53,376 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:50:53,521 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 10:50:53,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 387 places, 412 transitions, 848 flow [2023-08-30 10:50:53,686 INFO L130 PetriNetUnfolder]: 35/409 cut-off events. [2023-08-30 10:50:53,686 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 10:50:53,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 409 events. 35/409 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 876 event pairs, 0 based on Foata normal form. 0/344 useless extension candidates. Maximal degree in co-relation 308. Up to 2 conditions per place. [2023-08-30 10:50:53,696 INFO L82 GeneralOperation]: Start removeDead. Operand has 387 places, 412 transitions, 848 flow [2023-08-30 10:50:53,704 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 362 places, 385 transitions, 785 flow [2023-08-30 10:50:53,707 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:50:53,714 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 362 places, 385 transitions, 785 flow [2023-08-30 10:50:53,716 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 362 places, 385 transitions, 785 flow [2023-08-30 10:50:53,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 362 places, 385 transitions, 785 flow [2023-08-30 10:50:53,829 INFO L130 PetriNetUnfolder]: 33/385 cut-off events. [2023-08-30 10:50:53,829 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 10:50:53,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 385 events. 33/385 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 848 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 308. Up to 2 conditions per place. [2023-08-30 10:50:53,853 INFO L119 LiptonReduction]: Number of co-enabled transitions 35358 [2023-08-30 10:51:12,923 INFO L134 LiptonReduction]: Checked pairs total: 37939 [2023-08-30 10:51:12,923 INFO L136 LiptonReduction]: Total number of compositions: 496 [2023-08-30 10:51:12,936 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:51:12,941 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;@5949d190, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:51:12,941 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2023-08-30 10:51:12,943 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 10:51:12,944 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:51:12,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:51:12,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 10:51:12,945 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 10:51:12,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:51:12,949 INFO L85 PathProgramCache]: Analyzing trace with hash 54461, now seen corresponding path program 1 times [2023-08-30 10:51:12,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:51:12,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499643299] [2023-08-30 10:51:12,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:12,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:51:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:13,206 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 10:51:13,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:51:13,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499643299] [2023-08-30 10:51:13,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499643299] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:51:13,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:51:13,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:51:13,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089620672] [2023-08-30 10:51:13,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:51:13,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:51:13,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:51:13,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:51:13,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:51:13,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 908 [2023-08-30 10:51:13,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 373.6666666666667) internal successors, (1121), 3 states have internal predecessors, (1121), 0 states have call successors, (0), 0 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 10:51:13,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:51:13,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 908 [2023-08-30 10:51:13,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:51:14,278 INFO L130 PetriNetUnfolder]: 4760/6763 cut-off events. [2023-08-30 10:51:14,279 INFO L131 PetriNetUnfolder]: For 345/345 co-relation queries the response was YES. [2023-08-30 10:51:14,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13841 conditions, 6763 events. 4760/6763 cut-off events. For 345/345 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 34301 event pairs, 4157 based on Foata normal form. 0/2779 useless extension candidates. Maximal degree in co-relation 12700. Up to 6763 conditions per place. [2023-08-30 10:51:14,312 INFO L137 encePairwiseOnDemand]: 897/908 looper letters, 47 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2023-08-30 10:51:14,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 207 flow [2023-08-30 10:51:14,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:51:14,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:51:14,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1177 transitions. [2023-08-30 10:51:14,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43208516886930987 [2023-08-30 10:51:14,328 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1177 transitions. [2023-08-30 10:51:14,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1177 transitions. [2023-08-30 10:51:14,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:51:14,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1177 transitions. [2023-08-30 10:51:14,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 392.3333333333333) internal successors, (1177), 3 states have internal predecessors, (1177), 0 states have call successors, (0), 0 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 10:51:14,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 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 10:51:14,347 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 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 10:51:14,349 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 131 flow. Second operand 3 states and 1177 transitions. [2023-08-30 10:51:14,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 207 flow [2023-08-30 10:51:14,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 198 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 10:51:14,354 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 104 flow [2023-08-30 10:51:14,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2023-08-30 10:51:14,358 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -13 predicate places. [2023-08-30 10:51:14,359 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 104 flow [2023-08-30 10:51:14,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 373.6666666666667) internal successors, (1121), 3 states have internal predecessors, (1121), 0 states have call successors, (0), 0 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 10:51:14,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:51:14,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 10:51:14,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:51:14,360 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 10:51:14,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:51:14,361 INFO L85 PathProgramCache]: Analyzing trace with hash 54462, now seen corresponding path program 1 times [2023-08-30 10:51:14,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:51:14,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40563932] [2023-08-30 10:51:14,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:14,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:51:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:14,463 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 10:51:14,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:51:14,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40563932] [2023-08-30 10:51:14,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40563932] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:51:14,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:51:14,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:51:14,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657715104] [2023-08-30 10:51:14,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:51:14,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:51:14,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:51:14,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:51:14,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:51:14,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 908 [2023-08-30 10:51:14,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 373.6666666666667) internal successors, (1121), 3 states have internal predecessors, (1121), 0 states have call successors, (0), 0 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 10:51:14,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:51:14,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 908 [2023-08-30 10:51:14,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:51:16,319 INFO L130 PetriNetUnfolder]: 9519/13522 cut-off events. [2023-08-30 10:51:16,320 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2023-08-30 10:51:16,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27470 conditions, 13522 events. 9519/13522 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 75596 event pairs, 8314 based on Foata normal form. 0/5557 useless extension candidates. Maximal degree in co-relation 27464. Up to 6764 conditions per place. [2023-08-30 10:51:16,377 INFO L137 encePairwiseOnDemand]: 899/908 looper letters, 86 selfloop transitions, 6 changer transitions 0/92 dead transitions. [2023-08-30 10:51:16,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 92 transitions, 382 flow [2023-08-30 10:51:16,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:51:16,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:51:16,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1214 transitions. [2023-08-30 10:51:16,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4456681350954479 [2023-08-30 10:51:16,381 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1214 transitions. [2023-08-30 10:51:16,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1214 transitions. [2023-08-30 10:51:16,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:51:16,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1214 transitions. [2023-08-30 10:51:16,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 404.6666666666667) internal successors, (1214), 3 states have internal predecessors, (1214), 0 states have call successors, (0), 0 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 10:51:16,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 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 10:51:16,390 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 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 10:51:16,391 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 104 flow. Second operand 3 states and 1214 transitions. [2023-08-30 10:51:16,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 92 transitions, 382 flow [2023-08-30 10:51:16,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 92 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:51:16,393 INFO L231 Difference]: Finished difference. Result has 52 places, 53 transitions, 153 flow [2023-08-30 10:51:16,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=52, PETRI_TRANSITIONS=53} [2023-08-30 10:51:16,394 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -10 predicate places. [2023-08-30 10:51:16,394 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 53 transitions, 153 flow [2023-08-30 10:51:16,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 373.6666666666667) internal successors, (1121), 3 states have internal predecessors, (1121), 0 states have call successors, (0), 0 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 10:51:16,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:51:16,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 10:51:16,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 10:51:16,396 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 10:51:16,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:51:16,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1689929, now seen corresponding path program 1 times [2023-08-30 10:51:16,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:51:16,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625279734] [2023-08-30 10:51:16,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:16,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:51:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:16,442 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 10:51:16,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:51:16,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625279734] [2023-08-30 10:51:16,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625279734] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:51:16,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046417856] [2023-08-30 10:51:16,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:16,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:51:16,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:51:16,446 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 10:51:16,460 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 10:51:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:16,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:51:16,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:51:16,585 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 10:51:16,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:51:16,621 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 10:51:16,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046417856] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:51:16,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:51:16,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 10:51:16,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571873572] [2023-08-30 10:51:16,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:51:16,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:51:16,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:51:16,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:51:16,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:51:16,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 908 [2023-08-30 10:51:16,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 53 transitions, 153 flow. Second operand has 6 states, 6 states have (on average 374.0) internal successors, (2244), 6 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:16,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:51:16,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 908 [2023-08-30 10:51:16,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:51:20,515 INFO L130 PetriNetUnfolder]: 23796/33799 cut-off events. [2023-08-30 10:51:20,515 INFO L131 PetriNetUnfolder]: For 380/380 co-relation queries the response was YES. [2023-08-30 10:51:20,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68699 conditions, 33799 events. 23796/33799 cut-off events. For 380/380 co-relation queries the response was YES. Maximal size of possible extension queue 1612. Compared 208475 event pairs, 20785 based on Foata normal form. 0/13906 useless extension candidates. Maximal degree in co-relation 68690. Up to 6765 conditions per place. [2023-08-30 10:51:20,682 INFO L137 encePairwiseOnDemand]: 899/908 looper letters, 203 selfloop transitions, 21 changer transitions 0/224 dead transitions. [2023-08-30 10:51:20,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 224 transitions, 1009 flow [2023-08-30 10:51:20,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:51:20,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:51:20,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2471 transitions. [2023-08-30 10:51:20,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45356093979441997 [2023-08-30 10:51:20,690 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2471 transitions. [2023-08-30 10:51:20,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2471 transitions. [2023-08-30 10:51:20,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:51:20,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2471 transitions. [2023-08-30 10:51:20,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 411.8333333333333) internal successors, (2471), 6 states have internal predecessors, (2471), 0 states have call successors, (0), 0 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 10:51:20,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 908.0) internal successors, (6356), 7 states have internal predecessors, (6356), 0 states have call successors, (0), 0 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 10:51:20,708 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 908.0) internal successors, (6356), 7 states have internal predecessors, (6356), 0 states have call successors, (0), 0 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 10:51:20,708 INFO L175 Difference]: Start difference. First operand has 52 places, 53 transitions, 153 flow. Second operand 6 states and 2471 transitions. [2023-08-30 10:51:20,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 224 transitions, 1009 flow [2023-08-30 10:51:20,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 224 transitions, 985 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:51:20,715 INFO L231 Difference]: Finished difference. Result has 58 places, 68 transitions, 291 flow [2023-08-30 10:51:20,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=291, PETRI_PLACES=58, PETRI_TRANSITIONS=68} [2023-08-30 10:51:20,716 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2023-08-30 10:51:20,717 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 68 transitions, 291 flow [2023-08-30 10:51:20,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 374.0) internal successors, (2244), 6 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:20,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:51:20,718 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 10:51:20,726 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 10:51:20,926 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 10:51:20,927 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 10:51:20,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:51:20,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1193336962, now seen corresponding path program 2 times [2023-08-30 10:51:20,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:51:20,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827375084] [2023-08-30 10:51:20,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:20,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:51:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:21,077 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 10:51:21,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:51:21,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827375084] [2023-08-30 10:51:21,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827375084] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:51:21,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969869451] [2023-08-30 10:51:21,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:51:21,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:51:21,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:51:21,085 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 10:51:21,086 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 10:51:21,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:51:21,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:51:21,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 10:51:21,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:51:21,187 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 10:51:21,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:51:21,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969869451] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:51:21,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:51:21,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 10:51:21,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315759919] [2023-08-30 10:51:21,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:51:21,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:51:21,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:51:21,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:51:21,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:51:21,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 908 [2023-08-30 10:51:21,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 68 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 377.0) internal successors, (1131), 3 states have internal predecessors, (1131), 0 states have call successors, (0), 0 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 10:51:21,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:51:21,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 908 [2023-08-30 10:51:21,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:51:24,296 INFO L130 PetriNetUnfolder]: 23796/33796 cut-off events. [2023-08-30 10:51:24,297 INFO L131 PetriNetUnfolder]: For 385/385 co-relation queries the response was YES. [2023-08-30 10:51:24,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68720 conditions, 33796 events. 23796/33796 cut-off events. For 385/385 co-relation queries the response was YES. Maximal size of possible extension queue 1932. Compared 213062 event pairs, 20785 based on Foata normal form. 3/13905 useless extension candidates. Maximal degree in co-relation 68708. Up to 33796 conditions per place. [2023-08-30 10:51:24,437 INFO L137 encePairwiseOnDemand]: 904/908 looper letters, 64 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2023-08-30 10:51:24,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 391 flow [2023-08-30 10:51:24,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:51:24,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:51:24,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1176 transitions. [2023-08-30 10:51:24,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43171806167400884 [2023-08-30 10:51:24,444 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1176 transitions. [2023-08-30 10:51:24,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1176 transitions. [2023-08-30 10:51:24,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:51:24,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1176 transitions. [2023-08-30 10:51:24,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 392.0) internal successors, (1176), 3 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:24,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 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 10:51:24,453 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 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 10:51:24,454 INFO L175 Difference]: Start difference. First operand has 58 places, 68 transitions, 291 flow. Second operand 3 states and 1176 transitions. [2023-08-30 10:51:24,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 391 flow [2023-08-30 10:51:24,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 65 transitions, 319 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-08-30 10:51:24,459 INFO L231 Difference]: Finished difference. Result has 52 places, 65 transitions, 191 flow [2023-08-30 10:51:24,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=52, PETRI_TRANSITIONS=65} [2023-08-30 10:51:24,460 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -10 predicate places. [2023-08-30 10:51:24,460 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 65 transitions, 191 flow [2023-08-30 10:51:24,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 377.0) internal successors, (1131), 3 states have internal predecessors, (1131), 0 states have call successors, (0), 0 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 10:51:24,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:51:24,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:51:24,470 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 10:51:24,667 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 10:51:24,667 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 10:51:24,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:51:24,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1064991367, now seen corresponding path program 1 times [2023-08-30 10:51:24,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:51:24,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564560397] [2023-08-30 10:51:24,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:24,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:51:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:24,762 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 10:51:24,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:51:24,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564560397] [2023-08-30 10:51:24,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564560397] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:51:24,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:51:24,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:51:24,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078941551] [2023-08-30 10:51:24,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:51:24,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:51:24,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:51:24,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:51:24,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:51:24,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 908 [2023-08-30 10:51:24,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 65 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 372.6666666666667) internal successors, (1118), 3 states have internal predecessors, (1118), 0 states have call successors, (0), 0 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 10:51:24,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:51:24,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 908 [2023-08-30 10:51:24,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:51:27,897 INFO L130 PetriNetUnfolder]: 19037/27040 cut-off events. [2023-08-30 10:51:27,898 INFO L131 PetriNetUnfolder]: For 304/304 co-relation queries the response was YES. [2023-08-30 10:51:27,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54954 conditions, 27040 events. 19037/27040 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 1611. Compared 166365 event pairs, 16628 based on Foata normal form. 1/11121 useless extension candidates. Maximal degree in co-relation 54945. Up to 27032 conditions per place. [2023-08-30 10:51:27,983 INFO L137 encePairwiseOnDemand]: 901/908 looper letters, 51 selfloop transitions, 12 changer transitions 0/63 dead transitions. [2023-08-30 10:51:27,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 63 transitions, 309 flow [2023-08-30 10:51:27,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:51:27,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:51:27,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1161 transitions. [2023-08-30 10:51:27,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4262114537444934 [2023-08-30 10:51:27,992 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1161 transitions. [2023-08-30 10:51:27,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1161 transitions. [2023-08-30 10:51:27,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:51:27,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1161 transitions. [2023-08-30 10:51:27,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 387.0) internal successors, (1161), 3 states have internal predecessors, (1161), 0 states have call successors, (0), 0 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 10:51:28,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 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 10:51:28,005 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 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 10:51:28,005 INFO L175 Difference]: Start difference. First operand has 52 places, 65 transitions, 191 flow. Second operand 3 states and 1161 transitions. [2023-08-30 10:51:28,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 63 transitions, 309 flow [2023-08-30 10:51:28,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:51:28,009 INFO L231 Difference]: Finished difference. Result has 54 places, 63 transitions, 220 flow [2023-08-30 10:51:28,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=54, PETRI_TRANSITIONS=63} [2023-08-30 10:51:28,010 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -8 predicate places. [2023-08-30 10:51:28,010 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 63 transitions, 220 flow [2023-08-30 10:51:28,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 372.6666666666667) internal successors, (1118), 3 states have internal predecessors, (1118), 0 states have call successors, (0), 0 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 10:51:28,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:51:28,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:51:28,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 10:51:28,011 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 10:51:28,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:51:28,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1572430903, now seen corresponding path program 1 times [2023-08-30 10:51:28,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:51:28,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605139080] [2023-08-30 10:51:28,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:28,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:51:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:28,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:51:28,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:51:28,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605139080] [2023-08-30 10:51:28,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605139080] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:51:28,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290018881] [2023-08-30 10:51:28,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:28,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:51:28,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:51:28,105 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 10:51:28,107 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 10:51:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:28,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 10:51:28,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:51:28,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:51:28,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:51:28,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:51:28,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290018881] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:51:28,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:51:28,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-08-30 10:51:28,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305328286] [2023-08-30 10:51:28,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:51:28,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:51:28,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:51:28,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:51:28,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:51:28,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 364 out of 908 [2023-08-30 10:51:28,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 63 transitions, 220 flow. Second operand has 8 states, 8 states have (on average 366.375) internal successors, (2931), 8 states have internal predecessors, (2931), 0 states have call successors, (0), 0 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 10:51:28,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:51:28,425 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 364 of 908 [2023-08-30 10:51:28,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:51:29,064 INFO L130 PetriNetUnfolder]: 4760/6772 cut-off events. [2023-08-30 10:51:29,064 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2023-08-30 10:51:29,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13790 conditions, 6772 events. 4760/6772 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 34287 event pairs, 4157 based on Foata normal form. 9/2803 useless extension candidates. Maximal degree in co-relation 13779. Up to 6761 conditions per place. [2023-08-30 10:51:29,087 INFO L137 encePairwiseOnDemand]: 901/908 looper letters, 42 selfloop transitions, 15 changer transitions 0/57 dead transitions. [2023-08-30 10:51:29,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 292 flow [2023-08-30 10:51:29,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:51:29,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:51:29,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2250 transitions. [2023-08-30 10:51:29,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129955947136564 [2023-08-30 10:51:29,094 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2250 transitions. [2023-08-30 10:51:29,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2250 transitions. [2023-08-30 10:51:29,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:51:29,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2250 transitions. [2023-08-30 10:51:29,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 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 10:51:29,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 908.0) internal successors, (6356), 7 states have internal predecessors, (6356), 0 states have call successors, (0), 0 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 10:51:29,108 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 908.0) internal successors, (6356), 7 states have internal predecessors, (6356), 0 states have call successors, (0), 0 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 10:51:29,108 INFO L175 Difference]: Start difference. First operand has 54 places, 63 transitions, 220 flow. Second operand 6 states and 2250 transitions. [2023-08-30 10:51:29,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 292 flow [2023-08-30 10:51:29,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:51:29,110 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 220 flow [2023-08-30 10:51:29,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2023-08-30 10:51:29,111 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -2 predicate places. [2023-08-30 10:51:29,111 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 220 flow [2023-08-30 10:51:29,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 366.375) internal successors, (2931), 8 states have internal predecessors, (2931), 0 states have call successors, (0), 0 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 10:51:29,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:51:29,112 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:51:29,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 10:51:29,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:51:29,324 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 10:51:29,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:51:29,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1390982649, now seen corresponding path program 2 times [2023-08-30 10:51:29,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:51:29,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948695749] [2023-08-30 10:51:29,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:29,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:51:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:29,504 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-30 10:51:29,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:51:29,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948695749] [2023-08-30 10:51:29,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948695749] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:51:29,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850799291] [2023-08-30 10:51:29,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:51:29,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:51:29,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:51:29,506 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 10:51:29,509 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 10:51:29,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:51:29,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:51:29,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 10:51:29,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:51:29,730 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-30 10:51:29,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:51:29,804 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-30 10:51:29,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850799291] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:51:29,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:51:29,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2023-08-30 10:51:29,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578414418] [2023-08-30 10:51:29,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:51:29,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 10:51:29,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:51:29,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 10:51:29,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-08-30 10:51:30,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 364 out of 908 [2023-08-30 10:51:30,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 220 flow. Second operand has 17 states, 17 states have (on average 365.6470588235294) internal successors, (6216), 17 states have internal predecessors, (6216), 0 states have call successors, (0), 0 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 10:51:30,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:51:30,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 364 of 908 [2023-08-30 10:51:30,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:51:30,899 INFO L130 PetriNetUnfolder]: 4760/6775 cut-off events. [2023-08-30 10:51:30,899 INFO L131 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2023-08-30 10:51:30,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13823 conditions, 6775 events. 4760/6775 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 34287 event pairs, 4157 based on Foata normal form. 3/2800 useless extension candidates. Maximal degree in co-relation 13809. Up to 6761 conditions per place. [2023-08-30 10:51:30,914 INFO L137 encePairwiseOnDemand]: 901/908 looper letters, 42 selfloop transitions, 18 changer transitions 0/60 dead transitions. [2023-08-30 10:51:30,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 60 transitions, 352 flow [2023-08-30 10:51:30,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:51:30,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:51:30,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2611 transitions. [2023-08-30 10:51:30,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107929515418502 [2023-08-30 10:51:30,921 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2611 transitions. [2023-08-30 10:51:30,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2611 transitions. [2023-08-30 10:51:30,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:51:30,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2611 transitions. [2023-08-30 10:51:30,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 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 10:51:30,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 908.0) internal successors, (7264), 8 states have internal predecessors, (7264), 0 states have call successors, (0), 0 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 10:51:30,935 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 908.0) internal successors, (7264), 8 states have internal predecessors, (7264), 0 states have call successors, (0), 0 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 10:51:30,935 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 220 flow. Second operand 7 states and 2611 transitions. [2023-08-30 10:51:30,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 60 transitions, 352 flow [2023-08-30 10:51:30,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 60 transitions, 322 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 10:51:30,938 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 252 flow [2023-08-30 10:51:30,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=252, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2023-08-30 10:51:30,939 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 0 predicate places. [2023-08-30 10:51:30,939 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 252 flow [2023-08-30 10:51:30,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 365.6470588235294) internal successors, (6216), 17 states have internal predecessors, (6216), 0 states have call successors, (0), 0 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 10:51:30,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:51:30,941 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:51:30,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 10:51:31,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:51:31,149 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 10:51:31,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:51:31,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1756628230, now seen corresponding path program 1 times [2023-08-30 10:51:31,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:51:31,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476877556] [2023-08-30 10:51:31,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:31,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:51:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:31,221 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 10:51:31,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:51:31,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476877556] [2023-08-30 10:51:31,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476877556] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:51:31,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:51:31,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:51:31,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230624998] [2023-08-30 10:51:31,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:51:31,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:51:31,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:51:31,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:51:31,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:51:31,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 908 [2023-08-30 10:51:31,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 383.6666666666667) internal successors, (1151), 3 states have internal predecessors, (1151), 0 states have call successors, (0), 0 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 10:51:31,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:51:31,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 908 [2023-08-30 10:51:31,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:51:32,387 INFO L130 PetriNetUnfolder]: 8190/11655 cut-off events. [2023-08-30 10:51:32,387 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2023-08-30 10:51:32,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23741 conditions, 11655 events. 8190/11655 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 67114 event pairs, 4157 based on Foata normal form. 0/4801 useless extension candidates. Maximal degree in co-relation 23726. Up to 6776 conditions per place. [2023-08-30 10:51:32,425 INFO L137 encePairwiseOnDemand]: 904/908 looper letters, 92 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2023-08-30 10:51:32,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 94 transitions, 513 flow [2023-08-30 10:51:32,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:51:32,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:51:32,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1221 transitions. [2023-08-30 10:51:32,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44823788546255505 [2023-08-30 10:51:32,429 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1221 transitions. [2023-08-30 10:51:32,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1221 transitions. [2023-08-30 10:51:32,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:51:32,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1221 transitions. [2023-08-30 10:51:32,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 407.0) internal successors, (1221), 3 states have internal predecessors, (1221), 0 states have call successors, (0), 0 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 10:51:32,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 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 10:51:32,436 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 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 10:51:32,436 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 252 flow. Second operand 3 states and 1221 transitions. [2023-08-30 10:51:32,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 94 transitions, 513 flow [2023-08-30 10:51:32,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 94 transitions, 483 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-30 10:51:32,438 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 236 flow [2023-08-30 10:51:32,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2023-08-30 10:51:32,439 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -1 predicate places. [2023-08-30 10:51:32,439 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 236 flow [2023-08-30 10:51:32,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 383.6666666666667) internal successors, (1151), 3 states have internal predecessors, (1151), 0 states have call successors, (0), 0 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 10:51:32,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:51:32,440 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:51:32,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 10:51:32,440 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 10:51:32,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:51:32,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1756628297, now seen corresponding path program 3 times [2023-08-30 10:51:32,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:51:32,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163077529] [2023-08-30 10:51:32,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:32,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:51:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:33,358 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-30 10:51:33,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:51:33,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163077529] [2023-08-30 10:51:33,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163077529] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:51:33,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213527517] [2023-08-30 10:51:33,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 10:51:33,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:51:33,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:51:33,361 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 10:51:33,363 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 10:51:33,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-30 10:51:33,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:51:33,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-30 10:51:33,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:51:33,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 10:51:33,664 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 10:51:33,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:51:33,707 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 10:51:33,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:51:33,751 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 10:51:33,797 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-30 10:51:33,797 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 10:51:33,870 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-30 10:51:33,871 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 10:51:33,928 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:51:33,928 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 10:51:33,957 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 10:51:33,967 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 10:51:33,979 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 10:51:33,994 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 10:51:34,006 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 10:51:34,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:51:34,032 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 10:51:34,045 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-30 10:51:34,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:51:34,120 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_443 (Array Int Int)) (v_ArrVal_442 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_442) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_443) c_~o_2~0.base) c_~o_2~0.offset) 9223372039002259456)) is different from false [2023-08-30 10:51:44,749 INFO L321 Elim1Store]: treesize reduction 212, result has 30.5 percent of original size [2023-08-30 10:51:44,749 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 53 treesize of output 106 [2023-08-30 10:51:44,825 INFO L321 Elim1Store]: treesize reduction 24, result has 70.4 percent of original size [2023-08-30 10:51:44,826 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 132 treesize of output 152 [2023-08-30 10:51:44,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-08-30 10:51:44,859 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 22 treesize of output 20 [2023-08-30 10:51:45,096 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 10 treesize of output 8 [2023-08-30 10:51:45,125 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 25 trivial. 5 not checked. [2023-08-30 10:51:45,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213527517] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:51:45,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:51:45,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-30 10:51:45,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191849586] [2023-08-30 10:51:45,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:51:45,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 10:51:45,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:51:45,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 10:51:45,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=773, Unknown=13, NotChecked=58, Total=992 [2023-08-30 10:51:45,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 908 [2023-08-30 10:51:45,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 236 flow. Second operand has 32 states, 32 states have (on average 311.3125) internal successors, (9962), 32 states have internal predecessors, (9962), 0 states have call successors, (0), 0 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 10:51:45,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:51:45,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 908 [2023-08-30 10:51:45,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:52:17,907 WARN L222 SmtUtils]: Spent 32.35s on a formula simplification. DAG size of input: 42 DAG size of output: 40 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:52:44,380 WARN L222 SmtUtils]: Spent 26.44s on a formula simplification. DAG size of input: 45 DAG size of output: 43 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:53:02,744 WARN L222 SmtUtils]: Spent 18.32s on a formula simplification. DAG size of input: 45 DAG size of output: 43 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:53:10,954 WARN L222 SmtUtils]: Spent 8.19s on a formula simplification. DAG size of input: 49 DAG size of output: 44 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:53:12,857 INFO L130 PetriNetUnfolder]: 10269/15181 cut-off events. [2023-08-30 10:53:12,858 INFO L131 PetriNetUnfolder]: For 1062/1062 co-relation queries the response was YES. [2023-08-30 10:53:12,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32040 conditions, 15181 events. 10269/15181 cut-off events. For 1062/1062 co-relation queries the response was YES. Maximal size of possible extension queue 1087. Compared 97373 event pairs, 5647 based on Foata normal form. 0/6724 useless extension candidates. Maximal degree in co-relation 32024. Up to 10246 conditions per place. [2023-08-30 10:53:12,914 INFO L137 encePairwiseOnDemand]: 891/908 looper letters, 72 selfloop transitions, 29 changer transitions 0/101 dead transitions. [2023-08-30 10:53:12,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 101 transitions, 533 flow [2023-08-30 10:53:12,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 10:53:12,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 10:53:12,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4745 transitions. [2023-08-30 10:53:12,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838472834067546 [2023-08-30 10:53:12,925 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4745 transitions. [2023-08-30 10:53:12,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4745 transitions. [2023-08-30 10:53:12,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:53:12,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4745 transitions. [2023-08-30 10:53:12,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 316.3333333333333) internal successors, (4745), 15 states have internal predecessors, (4745), 0 states have call successors, (0), 0 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 10:53:12,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 908.0) internal successors, (14528), 16 states have internal predecessors, (14528), 0 states have call successors, (0), 0 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 10:53:12,954 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 908.0) internal successors, (14528), 16 states have internal predecessors, (14528), 0 states have call successors, (0), 0 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 10:53:12,954 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 236 flow. Second operand 15 states and 4745 transitions. [2023-08-30 10:53:12,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 101 transitions, 533 flow [2023-08-30 10:53:12,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 101 transitions, 529 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:53:12,957 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 358 flow [2023-08-30 10:53:12,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=358, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2023-08-30 10:53:12,958 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 15 predicate places. [2023-08-30 10:53:12,958 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 358 flow [2023-08-30 10:53:12,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 311.3125) internal successors, (9962), 32 states have internal predecessors, (9962), 0 states have call successors, (0), 0 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 10:53:12,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:53:12,961 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:53:12,969 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 10:53:13,168 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 10:53:13,168 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 10:53:13,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:53:13,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1756628226, now seen corresponding path program 1 times [2023-08-30 10:53:13,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:53:13,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902382747] [2023-08-30 10:53:13,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:53:13,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:53:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:53:14,882 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 10:53:14,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:53:14,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902382747] [2023-08-30 10:53:14,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902382747] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:53:14,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595389823] [2023-08-30 10:53:14,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:53:14,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:53:14,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:53:14,885 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 10:53:14,889 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 10:53:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:53:15,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-30 10:53:15,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:53:15,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:53:15,106 INFO L321 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-08-30 10:53:15,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 39 [2023-08-30 10:53:15,139 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 10:53:15,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:53:15,185 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 23 treesize of output 22 [2023-08-30 10:53:15,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:53:15,233 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 23 treesize of output 22 [2023-08-30 10:53:15,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:53:15,285 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 23 treesize of output 22 [2023-08-30 10:53:15,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:53:15,336 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 23 treesize of output 22 [2023-08-30 10:53:15,387 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 10:53:15,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 10:53:15,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:53:15,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:53:15,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:53:15,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:53:15,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:53:15,538 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:53:15,538 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 10:53:15,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:53:15,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:53:15,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:53:15,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:53:15,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:53:15,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:53:15,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:53:15,743 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 10:53:15,745 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:53:15,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 12 [2023-08-30 10:53:15,766 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-30 10:53:15,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:53:15,883 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_568 (Array Int Int)) (v_ArrVal_569 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_568) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_569) c_~o_0~0.base) c_~o_0~0.offset)))) is different from false [2023-08-30 10:53:29,486 INFO L321 Elim1Store]: treesize reduction 244, result has 20.0 percent of original size [2023-08-30 10:53:29,487 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 58 treesize of output 79 [2023-08-30 10:53:29,504 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:53:29,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1107 treesize of output 1075 [2023-08-30 10:53:29,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 59 [2023-08-30 10:53:29,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2023-08-30 10:53:29,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2023-08-30 10:53:29,707 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 17 refuted. 1 times theorem prover too weak. 20 trivial. 5 not checked. [2023-08-30 10:53:29,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595389823] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:53:29,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:53:29,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 38 [2023-08-30 10:53:29,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078765360] [2023-08-30 10:53:29,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:53:29,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-30 10:53:29,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:53:29,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-30 10:53:29,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1280, Unknown=16, NotChecked=74, Total=1560 [2023-08-30 10:53:29,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 908 [2023-08-30 10:53:29,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 358 flow. Second operand has 40 states, 40 states have (on average 310.25) internal successors, (12410), 40 states have internal predecessors, (12410), 0 states have call successors, (0), 0 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 10:53:29,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:53:29,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 908 [2023-08-30 10:53:29,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:53:33,001 INFO L130 PetriNetUnfolder]: 12522/18486 cut-off events. [2023-08-30 10:53:33,001 INFO L131 PetriNetUnfolder]: For 5381/5381 co-relation queries the response was YES. [2023-08-30 10:53:33,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42106 conditions, 18486 events. 12522/18486 cut-off events. For 5381/5381 co-relation queries the response was YES. Maximal size of possible extension queue 1388. Compared 118947 event pairs, 9557 based on Foata normal form. 0/8939 useless extension candidates. Maximal degree in co-relation 42086. Up to 13151 conditions per place. [2023-08-30 10:53:33,062 INFO L137 encePairwiseOnDemand]: 896/908 looper letters, 110 selfloop transitions, 21 changer transitions 0/131 dead transitions. [2023-08-30 10:53:33,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 131 transitions, 769 flow [2023-08-30 10:53:33,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 10:53:33,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 10:53:33,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4755 transitions. [2023-08-30 10:53:33,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3491189427312775 [2023-08-30 10:53:33,072 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4755 transitions. [2023-08-30 10:53:33,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4755 transitions. [2023-08-30 10:53:33,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:53:33,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4755 transitions. [2023-08-30 10:53:33,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 317.0) internal successors, (4755), 15 states have internal predecessors, (4755), 0 states have call successors, (0), 0 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 10:53:33,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 908.0) internal successors, (14528), 16 states have internal predecessors, (14528), 0 states have call successors, (0), 0 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 10:53:33,099 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 908.0) internal successors, (14528), 16 states have internal predecessors, (14528), 0 states have call successors, (0), 0 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 10:53:33,099 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 358 flow. Second operand 15 states and 4755 transitions. [2023-08-30 10:53:33,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 131 transitions, 769 flow [2023-08-30 10:53:33,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 131 transitions, 720 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-08-30 10:53:33,105 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 388 flow [2023-08-30 10:53:33,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=388, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2023-08-30 10:53:33,106 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 25 predicate places. [2023-08-30 10:53:33,106 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 388 flow [2023-08-30 10:53:33,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 310.25) internal successors, (12410), 40 states have internal predecessors, (12410), 0 states have call successors, (0), 0 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 10:53:33,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:53:33,109 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:53:33,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 10:53:33,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:53:33,317 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 10:53:33,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:53:33,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1756628228, now seen corresponding path program 1 times [2023-08-30 10:53:33,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:53:33,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758877586] [2023-08-30 10:53:33,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:53:33,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:53:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:53:34,148 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-30 10:53:34,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:53:34,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758877586] [2023-08-30 10:53:34,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758877586] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:53:34,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075523313] [2023-08-30 10:53:34,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:53:34,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:53:34,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:53:34,153 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:53:34,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 10:53:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:53:34,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-30 10:53:34,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:53:34,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 10:53:34,375 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 10:53:34,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:53:34,418 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 23 treesize of output 22 [2023-08-30 10:53:34,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:53:34,459 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 23 treesize of output 22 [2023-08-30 10:53:34,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:53:34,504 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 23 treesize of output 22 [2023-08-30 10:53:34,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:53:34,552 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 23 treesize of output 22 [2023-08-30 10:53:34,589 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:53:34,589 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 10:53:34,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:53:34,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:53:34,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:53:34,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:53:34,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:53:34,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:53:34,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:53:34,719 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-30 10:53:34,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:53:34,763 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_686 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_686) c_~o_2~0.base) c_~o_2~0.offset) 4294967296))) is different from false [2023-08-30 10:53:55,232 INFO L321 Elim1Store]: treesize reduction 244, result has 20.0 percent of original size [2023-08-30 10:53:55,232 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 55 treesize of output 76 [2023-08-30 10:53:55,241 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:53:55,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 69 [2023-08-30 10:53:55,247 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 28 treesize of output 26 [2023-08-30 10:53:55,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2023-08-30 10:53:55,338 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 10 treesize of output 8 [2023-08-30 10:53:55,362 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 12 refuted. 2 times theorem prover too weak. 25 trivial. 5 not checked. [2023-08-30 10:53:55,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075523313] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:53:55,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:53:55,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-30 10:53:55,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579473268] [2023-08-30 10:53:55,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:53:55,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 10:53:55,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:53:55,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 10:53:55,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=756, Unknown=15, NotChecked=58, Total=992 [2023-08-30 10:53:57,725 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 10:53:59,845 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 10:54:00,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 908 [2023-08-30 10:54:00,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 388 flow. Second operand has 32 states, 32 states have (on average 320.3125) internal successors, (10250), 32 states have internal predecessors, (10250), 0 states have call successors, (0), 0 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 10:54:00,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:54:00,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 908 [2023-08-30 10:54:00,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:54:02,946 INFO L130 PetriNetUnfolder]: 13271/19744 cut-off events. [2023-08-30 10:54:02,946 INFO L131 PetriNetUnfolder]: For 12916/12916 co-relation queries the response was YES. [2023-08-30 10:54:03,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46859 conditions, 19744 events. 13271/19744 cut-off events. For 12916/12916 co-relation queries the response was YES. Maximal size of possible extension queue 1533. Compared 133290 event pairs, 7358 based on Foata normal form. 0/10751 useless extension candidates. Maximal degree in co-relation 46839. Up to 13587 conditions per place. [2023-08-30 10:54:03,071 INFO L137 encePairwiseOnDemand]: 892/908 looper letters, 70 selfloop transitions, 37 changer transitions 0/107 dead transitions. [2023-08-30 10:54:03,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 107 transitions, 683 flow [2023-08-30 10:54:03,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 10:54:03,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 10:54:03,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 5200 transitions. [2023-08-30 10:54:03,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3579295154185022 [2023-08-30 10:54:03,079 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 5200 transitions. [2023-08-30 10:54:03,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 5200 transitions. [2023-08-30 10:54:03,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:54:03,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 5200 transitions. [2023-08-30 10:54:03,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 325.0) internal successors, (5200), 16 states have internal predecessors, (5200), 0 states have call successors, (0), 0 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 10:54:03,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 908.0) internal successors, (15436), 17 states have internal predecessors, (15436), 0 states have call successors, (0), 0 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 10:54:03,099 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 908.0) internal successors, (15436), 17 states have internal predecessors, (15436), 0 states have call successors, (0), 0 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 10:54:03,099 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 388 flow. Second operand 16 states and 5200 transitions. [2023-08-30 10:54:03,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 107 transitions, 683 flow [2023-08-30 10:54:03,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 107 transitions, 673 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-08-30 10:54:03,110 INFO L231 Difference]: Finished difference. Result has 103 places, 82 transitions, 488 flow [2023-08-30 10:54:03,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=488, PETRI_PLACES=103, PETRI_TRANSITIONS=82} [2023-08-30 10:54:03,110 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 41 predicate places. [2023-08-30 10:54:03,110 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 82 transitions, 488 flow [2023-08-30 10:54:03,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 320.3125) internal successors, (10250), 32 states have internal predecessors, (10250), 0 states have call successors, (0), 0 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 10:54:03,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:54:03,112 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:54:03,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 10:54:03,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:54:03,312 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 10:54:03,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:54:03,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1756628227, now seen corresponding path program 1 times [2023-08-30 10:54:03,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:54:03,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968579793] [2023-08-30 10:54:03,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:54:03,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:54:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:54:04,867 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 10:54:04,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:54:04,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968579793] [2023-08-30 10:54:04,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968579793] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:54:04,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442352282] [2023-08-30 10:54:04,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:54:04,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:54:04,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:54:04,869 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:54:04,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 10:54:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:54:05,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 73 conjunts are in the unsatisfiable core [2023-08-30 10:54:05,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:54:05,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:54:05,099 INFO L321 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-08-30 10:54:05,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 39 [2023-08-30 10:54:05,140 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 10:54:05,172 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 10:54:05,209 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 10:54:05,241 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 10:54:05,275 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 10:54:05,321 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 10:54:05,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 10:54:05,390 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 10:54:05,431 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 10:54:05,477 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 10:54:05,513 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 10:54:05,564 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 10:54:05,608 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:54:05,609 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 10:54:05,641 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 10:54:05,663 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 10:54:05,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:54:05,690 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 10:54:05,706 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 10:54:05,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:54:05,745 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 10:54:05,845 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 10:54:05,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:54:06,182 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_812 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_812))) (let ((.cse0 (select (select .cse1 ~o_2~0.base) c_~o_2~0.offset))) (or (< 9223372039002259455 .cse0) (< (select (select .cse1 c_~o_0~0.base) c_~o_0~0.offset) (+ .cse0 2147483648)) (<= .cse0 0))))) (forall ((v_ArrVal_812 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_812))) (let ((.cse2 (select (select .cse3 ~o_2~0.base) c_~o_2~0.offset))) (or (< .cse2 0) (< (select (select .cse3 c_~o_0~0.base) c_~o_0~0.offset) (+ .cse2 2147483648)) (< 0 .cse2)))))) is different from false [2023-08-30 10:54:06,214 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_812 (Array Int Int)) (v_ArrVal_811 (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_811) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_812))) (let ((.cse0 (select (select .cse1 ~o_2~0.base) c_~o_2~0.offset))) (or (< 0 .cse0) (< (select (select .cse1 c_~o_0~0.base) c_~o_0~0.offset) (+ .cse0 2147483648)) (< .cse0 0))))) (forall ((v_ArrVal_812 (Array Int Int)) (v_ArrVal_811 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse2 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_811) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_812))) (let ((.cse3 (select (select .cse2 ~o_2~0.base) c_~o_2~0.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 10:54:52,344 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:54:52,345 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 511 treesize of output 297 [2023-08-30 10:54:52,543 INFO L321 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2023-08-30 10:54:52,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 80941 treesize of output 78885 [2023-08-30 10:54:52,937 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:54:52,937 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 1519 treesize of output 1492 [2023-08-30 10:54:53,026 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:54:53,027 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 1483 treesize of output 1420 [2023-08-30 10:54:53,108 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:54:53,108 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 1411 treesize of output 1276 [2023-08-30 10:54:53,262 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:54:53,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11684 treesize of output 11438 [2023-08-30 10:54:53,613 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:54:53,613 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 2627 treesize of output 2564 [2023-08-30 10:54:53,731 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:54:53,732 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 2555 treesize of output 2528 [2023-08-30 10:54:53,859 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:54:53,860 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 2519 treesize of output 2384 Killed by 15