./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-chromosome-symm.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-chromosome-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c7fdb1595c27c144c3bf111946260cb3946663200a2d53f7fba5455031291c4f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 07:22:23,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:22:23,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:22:23,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:22:23,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:22:23,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:22:23,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:22:23,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:22:23,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:22:23,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:22:23,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:22:23,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:22:23,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:22:23,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:22:23,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:22:23,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:22:23,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:22:23,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:22:23,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:22:23,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:22:23,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:22:23,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:22:23,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:22:23,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:22:23,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:22:23,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:22:23,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:22:23,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:22:23,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:22:23,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:22:23,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:22:23,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:22:23,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:22:23,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:22:23,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:22:23,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:22:23,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:22:23,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:22:23,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:22:23,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:22:23,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:22:23,232 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:22:23,276 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:22:23,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:22:23,277 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:22:23,277 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:22:23,278 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:22:23,279 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:22:23,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:22:23,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:22:23,280 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:22:23,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:22:23,281 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:22:23,281 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:22:23,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:22:23,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:22:23,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:22:23,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:22:23,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:22:23,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:22:23,282 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:22:23,282 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:22:23,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:22:23,283 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:22:23,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:22:23,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:22:23,283 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:22:23,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:22:23,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:22:23,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:22:23,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:22:23,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:22:23,285 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:22:23,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:22:23,285 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:22:23,285 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:22:23,286 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:22:23,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:22:23,286 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:22:23,286 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7fdb1595c27c144c3bf111946260cb3946663200a2d53f7fba5455031291c4f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:22:23,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:22:23,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:22:23,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:22:23,616 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:22:23,617 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:22:23,618 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-symm.wvr.c [2023-09-01 07:22:24,857 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:22:25,052 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:22:25,052 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-symm.wvr.c [2023-09-01 07:22:25,058 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/182906c67/41974849683744259ad0d5b1f987a1ba/FLAG5141b7221 [2023-09-01 07:22:25,072 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/182906c67/41974849683744259ad0d5b1f987a1ba [2023-09-01 07:22:25,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:22:25,076 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:22:25,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:22:25,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:22:25,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:22:25,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:22:25" (1/1) ... [2023-09-01 07:22:25,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@368ebeb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:22:25, skipping insertion in model container [2023-09-01 07:22:25,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:22:25" (1/1) ... [2023-09-01 07:22:25,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:22:25,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:22:25,265 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-symm.wvr.c[2695,2708] [2023-09-01 07:22:25,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:22:25,281 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:22:25,306 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-symm.wvr.c[2695,2708] [2023-09-01 07:22:25,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:22:25,325 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:22:25,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:22:25 WrapperNode [2023-09-01 07:22:25,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:22:25,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:22:25,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:22:25,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:22:25,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:22:25" (1/1) ... [2023-09-01 07:22:25,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:22:25" (1/1) ... [2023-09-01 07:22:25,365 INFO L138 Inliner]: procedures = 25, calls = 37, calls flagged for inlining = 15, calls inlined = 19, statements flattened = 234 [2023-09-01 07:22:25,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:22:25,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:22:25,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:22:25,366 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:22:25,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:22:25" (1/1) ... [2023-09-01 07:22:25,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:22:25" (1/1) ... [2023-09-01 07:22:25,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:22:25" (1/1) ... [2023-09-01 07:22:25,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:22:25" (1/1) ... [2023-09-01 07:22:25,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:22:25" (1/1) ... [2023-09-01 07:22:25,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:22:25" (1/1) ... [2023-09-01 07:22:25,402 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:22:25" (1/1) ... [2023-09-01 07:22:25,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:22:25" (1/1) ... [2023-09-01 07:22:25,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:22:25,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:22:25,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:22:25,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:22:25,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:22:25" (1/1) ... [2023-09-01 07:22:25,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:22:25,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:22:25,445 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 07:22:25,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 07:22:25,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:22:25,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:22:25,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:22:25,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:22:25,486 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 07:22:25,487 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 07:22:25,487 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 07:22:25,487 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 07:22:25,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:22:25,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 07:22:25,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:22:25,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:22:25,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:22:25,489 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 07:22:25,636 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:22:25,638 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:22:25,971 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:22:25,981 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:22:25,982 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 07:22:25,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:22:25 BoogieIcfgContainer [2023-09-01 07:22:25,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:22:25,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:22:25,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:22:25,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:22:25,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:22:25" (1/3) ... [2023-09-01 07:22:25,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43131c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:22:25, skipping insertion in model container [2023-09-01 07:22:25,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:22:25" (2/3) ... [2023-09-01 07:22:25,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43131c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:22:25, skipping insertion in model container [2023-09-01 07:22:25,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:22:25" (3/3) ... [2023-09-01 07:22:25,992 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-symm.wvr.c [2023-09-01 07:22:25,999 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:22:26,007 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:22:26,008 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-09-01 07:22:26,008 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:22:26,198 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 07:22:26,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 289 transitions, 594 flow [2023-09-01 07:22:26,394 INFO L130 PetriNetUnfolder]: 25/287 cut-off events. [2023-09-01 07:22:26,395 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 07:22:26,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 287 events. 25/287 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 504 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 183. Up to 2 conditions per place. [2023-09-01 07:22:26,404 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 289 transitions, 594 flow [2023-09-01 07:22:26,414 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 259 transitions, 527 flow [2023-09-01 07:22:26,418 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:22:26,440 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 259 transitions, 527 flow [2023-09-01 07:22:26,443 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 259 transitions, 527 flow [2023-09-01 07:22:26,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 259 transitions, 527 flow [2023-09-01 07:22:26,511 INFO L130 PetriNetUnfolder]: 22/259 cut-off events. [2023-09-01 07:22:26,512 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 07:22:26,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 259 events. 22/259 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 395 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 183. Up to 2 conditions per place. [2023-09-01 07:22:26,523 INFO L119 LiptonReduction]: Number of co-enabled transitions 12212 [2023-09-01 07:22:39,480 INFO L134 LiptonReduction]: Checked pairs total: 12635 [2023-09-01 07:22:39,480 INFO L136 LiptonReduction]: Total number of compositions: 326 [2023-09-01 07:22:39,493 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 07:22:39,500 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;@61d281ee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:22:39,501 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-09-01 07:22:39,503 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 07:22:39,504 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:22:39,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:22:39,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 07:22:39,505 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:22:39,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:22:39,510 INFO L85 PathProgramCache]: Analyzing trace with hash 37235, now seen corresponding path program 1 times [2023-09-01 07:22:39,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:22:39,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134286193] [2023-09-01 07:22:39,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:39,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:22:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:39,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:22:39,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:22:39,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134286193] [2023-09-01 07:22:39,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134286193] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:22:39,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:22:39,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:22:39,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400473473] [2023-09-01 07:22:39,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:22:39,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:22:39,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:22:39,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:22:39,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:22:39,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 615 [2023-09-01 07:22:39,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:39,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:22:39,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 615 [2023-09-01 07:22:39,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:22:40,233 INFO L130 PetriNetUnfolder]: 557/959 cut-off events. [2023-09-01 07:22:40,234 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2023-09-01 07:22:40,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1982 conditions, 959 events. 557/959 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4647 event pairs, 474 based on Foata normal form. 0/435 useless extension candidates. Maximal degree in co-relation 900. Up to 483 conditions per place. [2023-09-01 07:22:40,241 INFO L137 encePairwiseOnDemand]: 602/615 looper letters, 57 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2023-09-01 07:22:40,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 61 transitions, 262 flow [2023-09-01 07:22:40,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:22:40,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:22:40,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 858 transitions. [2023-09-01 07:22:40,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46504065040650405 [2023-09-01 07:22:40,264 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 858 transitions. [2023-09-01 07:22:40,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 858 transitions. [2023-09-01 07:22:40,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:22:40,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 858 transitions. [2023-09-01 07:22:40,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:40,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:40,285 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:40,287 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 85 flow. Second operand 3 states and 858 transitions. [2023-09-01 07:22:40,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 61 transitions, 262 flow [2023-09-01 07:22:40,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 61 transitions, 252 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 07:22:40,295 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 106 flow [2023-09-01 07:22:40,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2023-09-01 07:22:40,302 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -4 predicate places. [2023-09-01 07:22:40,303 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 106 flow [2023-09-01 07:22:40,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:40,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:22:40,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:22:40,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:22:40,306 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:22:40,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:22:40,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1156707, now seen corresponding path program 1 times [2023-09-01 07:22:40,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:22:40,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983770744] [2023-09-01 07:22:40,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:40,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:22:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:40,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:22:40,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:22:40,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983770744] [2023-09-01 07:22:40,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983770744] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:22:40,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:22:40,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:22:40,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756458734] [2023-09-01 07:22:40,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:22:40,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:22:40,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:22:40,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:22:40,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:22:40,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 615 [2023-09-01 07:22:40,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:40,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:22:40,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 615 [2023-09-01 07:22:40,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:22:40,583 INFO L130 PetriNetUnfolder]: 557/957 cut-off events. [2023-09-01 07:22:40,584 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-09-01 07:22:40,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1973 conditions, 957 events. 557/957 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 4763 event pairs, 474 based on Foata normal form. 0/439 useless extension candidates. Maximal degree in co-relation 975. Up to 957 conditions per place. [2023-09-01 07:22:40,589 INFO L137 encePairwiseOnDemand]: 612/615 looper letters, 33 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-09-01 07:22:40,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 34 transitions, 166 flow [2023-09-01 07:22:40,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:22:40,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:22:40,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 816 transitions. [2023-09-01 07:22:40,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44227642276422763 [2023-09-01 07:22:40,592 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 816 transitions. [2023-09-01 07:22:40,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 816 transitions. [2023-09-01 07:22:40,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:22:40,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 816 transitions. [2023-09-01 07:22:40,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:40,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:40,599 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:40,599 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 106 flow. Second operand 3 states and 816 transitions. [2023-09-01 07:22:40,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 34 transitions, 166 flow [2023-09-01 07:22:40,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:22:40,601 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 92 flow [2023-09-01 07:22:40,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-09-01 07:22:40,602 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -6 predicate places. [2023-09-01 07:22:40,602 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 92 flow [2023-09-01 07:22:40,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:40,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:22:40,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:22:40,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 07:22:40,604 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:22:40,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:22:40,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1156750, now seen corresponding path program 1 times [2023-09-01 07:22:40,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:22:40,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073229407] [2023-09-01 07:22:40,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:40,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:22:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:40,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:22:40,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:22:40,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073229407] [2023-09-01 07:22:40,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073229407] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:22:40,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139367680] [2023-09-01 07:22:40,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:40,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:22:40,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:22:40,729 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:22:40,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 07:22:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:40,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:22:40,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:22:40,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:22:40,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:22:40,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:22:40,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139367680] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:22:40,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:22:40,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 07:22:40,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104537254] [2023-09-01 07:22:40,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:22:40,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 07:22:40,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:22:40,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 07:22:40,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:22:40,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 615 [2023-09-01 07:22:40,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 92 flow. Second operand has 7 states, 7 states have (on average 262.14285714285717) internal successors, (1835), 7 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:40,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:22:40,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 615 [2023-09-01 07:22:40,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:22:41,541 INFO L130 PetriNetUnfolder]: 1391/2388 cut-off events. [2023-09-01 07:22:41,542 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-09-01 07:22:41,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4904 conditions, 2388 events. 1391/2388 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 13344 event pairs, 1185 based on Foata normal form. 0/1091 useless extension candidates. Maximal degree in co-relation 4896. Up to 481 conditions per place. [2023-09-01 07:22:41,555 INFO L137 encePairwiseOnDemand]: 609/615 looper letters, 130 selfloop transitions, 13 changer transitions 0/143 dead transitions. [2023-09-01 07:22:41,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 143 transitions, 630 flow [2023-09-01 07:22:41,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:22:41,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:22:41,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1715 transitions. [2023-09-01 07:22:41,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46476964769647694 [2023-09-01 07:22:41,561 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1715 transitions. [2023-09-01 07:22:41,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1715 transitions. [2023-09-01 07:22:41,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:22:41,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1715 transitions. [2023-09-01 07:22:41,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 285.8333333333333) internal successors, (1715), 6 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:41,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 615.0) internal successors, (4305), 7 states have internal predecessors, (4305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:41,574 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 615.0) internal successors, (4305), 7 states have internal predecessors, (4305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:41,574 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 92 flow. Second operand 6 states and 1715 transitions. [2023-09-01 07:22:41,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 143 transitions, 630 flow [2023-09-01 07:22:41,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 143 transitions, 629 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:22:41,577 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 184 flow [2023-09-01 07:22:41,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-09-01 07:22:41,578 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2023-09-01 07:22:41,578 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 184 flow [2023-09-01 07:22:41,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 262.14285714285717) internal successors, (1835), 7 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:41,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:22:41,580 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 07:22:41,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 07:22:41,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:22:41,785 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:22:41,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:22:41,785 INFO L85 PathProgramCache]: Analyzing trace with hash 102124958, now seen corresponding path program 2 times [2023-09-01 07:22:41,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:22:41,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864807331] [2023-09-01 07:22:41,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:41,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:22:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:41,904 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:22:41,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:22:41,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864807331] [2023-09-01 07:22:41,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864807331] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:22:41,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38139774] [2023-09-01 07:22:41,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:22:41,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:22:41,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:22:41,907 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:22:41,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 07:22:41,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:22:41,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:22:41,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:22:41,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:22:42,000 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:22:42,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:22:42,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38139774] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:22:42,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:22:42,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 07:22:42,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310975376] [2023-09-01 07:22:42,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:22:42,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:22:42,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:22:42,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:22:42,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:22:42,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 615 [2023-09-01 07:22:42,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:42,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:22:42,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 615 [2023-09-01 07:22:42,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:22:42,366 INFO L130 PetriNetUnfolder]: 1391/2386 cut-off events. [2023-09-01 07:22:42,366 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2023-09-01 07:22:42,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4925 conditions, 2386 events. 1391/2386 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 14012 event pairs, 1185 based on Foata normal form. 2/1096 useless extension candidates. Maximal degree in co-relation 4913. Up to 2386 conditions per place. [2023-09-01 07:22:42,379 INFO L137 encePairwiseOnDemand]: 612/615 looper letters, 40 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-09-01 07:22:42,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 41 transitions, 246 flow [2023-09-01 07:22:42,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:22:42,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:22:42,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 820 transitions. [2023-09-01 07:22:42,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-09-01 07:22:42,383 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 820 transitions. [2023-09-01 07:22:42,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 820 transitions. [2023-09-01 07:22:42,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:22:42,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 820 transitions. [2023-09-01 07:22:42,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:42,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:42,390 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:42,390 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 184 flow. Second operand 3 states and 820 transitions. [2023-09-01 07:22:42,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 41 transitions, 246 flow [2023-09-01 07:22:42,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 201 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-09-01 07:22:42,394 INFO L231 Difference]: Finished difference. Result has 37 places, 41 transitions, 121 flow [2023-09-01 07:22:42,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=37, PETRI_TRANSITIONS=41} [2023-09-01 07:22:42,396 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -4 predicate places. [2023-09-01 07:22:42,397 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 41 transitions, 121 flow [2023-09-01 07:22:42,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:42,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:22:42,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:22:42,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 07:22:42,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-09-01 07:22:42,609 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:22:42,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:22:42,609 INFO L85 PathProgramCache]: Analyzing trace with hash -169429443, now seen corresponding path program 1 times [2023-09-01 07:22:42,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:22:42,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424671400] [2023-09-01 07:22:42,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:42,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:22:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:42,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:22:42,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:22:42,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424671400] [2023-09-01 07:22:42,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424671400] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:22:42,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:22:42,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 07:22:42,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857598879] [2023-09-01 07:22:42,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:22:42,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:22:42,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:22:42,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:22:42,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:22:42,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 615 [2023-09-01 07:22:42,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 41 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:42,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:22:42,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 615 [2023-09-01 07:22:42,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:22:43,017 INFO L130 PetriNetUnfolder]: 1113/1911 cut-off events. [2023-09-01 07:22:43,018 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-09-01 07:22:43,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3927 conditions, 1911 events. 1113/1911 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 10821 event pairs, 948 based on Foata normal form. 1/876 useless extension candidates. Maximal degree in co-relation 3918. Up to 1907 conditions per place. [2023-09-01 07:22:43,028 INFO L137 encePairwiseOnDemand]: 610/615 looper letters, 33 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2023-09-01 07:22:43,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 40 transitions, 197 flow [2023-09-01 07:22:43,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:22:43,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:22:43,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 810 transitions. [2023-09-01 07:22:43,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2023-09-01 07:22:43,032 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 810 transitions. [2023-09-01 07:22:43,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 810 transitions. [2023-09-01 07:22:43,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:22:43,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 810 transitions. [2023-09-01 07:22:43,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.0) internal successors, (810), 3 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:43,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:43,039 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:43,040 INFO L175 Difference]: Start difference. First operand has 37 places, 41 transitions, 121 flow. Second operand 3 states and 810 transitions. [2023-09-01 07:22:43,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 40 transitions, 197 flow [2023-09-01 07:22:43,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 40 transitions, 196 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:22:43,041 INFO L231 Difference]: Finished difference. Result has 39 places, 40 transitions, 139 flow [2023-09-01 07:22:43,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=39, PETRI_TRANSITIONS=40} [2023-09-01 07:22:43,042 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -2 predicate places. [2023-09-01 07:22:43,042 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 40 transitions, 139 flow [2023-09-01 07:22:43,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:43,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:22:43,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:22:43,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 07:22:43,044 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:22:43,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:22:43,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1722786559, now seen corresponding path program 1 times [2023-09-01 07:22:43,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:22:43,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752947688] [2023-09-01 07:22:43,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:43,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:22:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:43,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:22:43,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:22:43,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752947688] [2023-09-01 07:22:43,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752947688] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:22:43,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:22:43,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:22:43,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534224432] [2023-09-01 07:22:43,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:22:43,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:22:43,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:22:43,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:22:43,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:22:43,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 615 [2023-09-01 07:22:43,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 40 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:43,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:22:43,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 615 [2023-09-01 07:22:43,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:22:43,560 INFO L130 PetriNetUnfolder]: 1905/3271 cut-off events. [2023-09-01 07:22:43,561 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-09-01 07:22:43,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6717 conditions, 3271 events. 1905/3271 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 21197 event pairs, 948 based on Foata normal form. 0/1495 useless extension candidates. Maximal degree in co-relation 6706. Up to 1912 conditions per place. [2023-09-01 07:22:43,580 INFO L137 encePairwiseOnDemand]: 611/615 looper letters, 58 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-09-01 07:22:43,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 60 transitions, 302 flow [2023-09-01 07:22:43,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:22:43,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:22:43,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 846 transitions. [2023-09-01 07:22:43,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585365853658537 [2023-09-01 07:22:43,584 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 846 transitions. [2023-09-01 07:22:43,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 846 transitions. [2023-09-01 07:22:43,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:22:43,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 846 transitions. [2023-09-01 07:22:43,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.0) internal successors, (846), 3 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:43,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:43,590 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:43,590 INFO L175 Difference]: Start difference. First operand has 39 places, 40 transitions, 139 flow. Second operand 3 states and 846 transitions. [2023-09-01 07:22:43,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 60 transitions, 302 flow [2023-09-01 07:22:43,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 60 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:22:43,592 INFO L231 Difference]: Finished difference. Result has 40 places, 41 transitions, 139 flow [2023-09-01 07:22:43,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=40, PETRI_TRANSITIONS=41} [2023-09-01 07:22:43,593 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2023-09-01 07:22:43,593 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 41 transitions, 139 flow [2023-09-01 07:22:43,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:43,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:22:43,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:22:43,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 07:22:43,594 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:22:43,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:22:43,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1722786499, now seen corresponding path program 1 times [2023-09-01 07:22:43,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:22:43,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669739235] [2023-09-01 07:22:43,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:43,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:22:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:43,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:22:43,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:22:43,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669739235] [2023-09-01 07:22:43,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669739235] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:22:43,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32539113] [2023-09-01 07:22:43,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:43,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:22:43,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:22:43,666 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:22:43,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 07:22:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:43,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:22:43,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:22:43,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:22:43,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:22:43,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:22:43,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32539113] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:22:43,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:22:43,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-09-01 07:22:43,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774681544] [2023-09-01 07:22:43,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:22:43,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 07:22:43,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:22:43,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 07:22:43,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:22:43,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 615 [2023-09-01 07:22:43,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 139 flow. Second operand has 8 states, 8 states have (on average 257.125) internal successors, (2057), 8 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:43,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:22:43,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 615 [2023-09-01 07:22:43,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:22:44,066 INFO L130 PetriNetUnfolder]: 477/826 cut-off events. [2023-09-01 07:22:44,067 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2023-09-01 07:22:44,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1818 conditions, 826 events. 477/826 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 3846 event pairs, 419 based on Foata normal form. 6/424 useless extension candidates. Maximal degree in co-relation 1807. Up to 819 conditions per place. [2023-09-01 07:22:44,076 INFO L137 encePairwiseOnDemand]: 610/615 looper letters, 28 selfloop transitions, 10 changer transitions 0/38 dead transitions. [2023-09-01 07:22:44,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 200 flow [2023-09-01 07:22:44,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:22:44,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:22:44,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1573 transitions. [2023-09-01 07:22:44,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42628726287262875 [2023-09-01 07:22:44,082 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1573 transitions. [2023-09-01 07:22:44,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1573 transitions. [2023-09-01 07:22:44,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:22:44,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1573 transitions. [2023-09-01 07:22:44,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 262.1666666666667) internal successors, (1573), 6 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:44,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 615.0) internal successors, (4305), 7 states have internal predecessors, (4305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:44,092 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 615.0) internal successors, (4305), 7 states have internal predecessors, (4305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:44,093 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 139 flow. Second operand 6 states and 1573 transitions. [2023-09-01 07:22:44,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 200 flow [2023-09-01 07:22:44,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 38 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:22:44,095 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 160 flow [2023-09-01 07:22:44,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2023-09-01 07:22:44,095 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2023-09-01 07:22:44,096 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 160 flow [2023-09-01 07:22:44,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 257.125) internal successors, (2057), 8 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:44,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:22:44,097 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:22:44,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 07:22:44,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:22:44,305 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:22:44,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:22:44,306 INFO L85 PathProgramCache]: Analyzing trace with hash -773726591, now seen corresponding path program 2 times [2023-09-01 07:22:44,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:22:44,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187825589] [2023-09-01 07:22:44,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:44,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:22:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:44,473 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:22:44,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:22:44,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187825589] [2023-09-01 07:22:44,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187825589] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:22:44,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533049801] [2023-09-01 07:22:44,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:22:44,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:22:44,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:22:44,480 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:22:44,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 07:22:44,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 07:22:44,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:22:44,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 07:22:44,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:22:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:22:44,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:22:44,759 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:22:44,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533049801] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:22:44,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:22:44,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2023-09-01 07:22:44,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907245925] [2023-09-01 07:22:44,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:22:44,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 07:22:44,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:22:44,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 07:22:44,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-09-01 07:22:44,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 615 [2023-09-01 07:22:44,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 160 flow. Second operand has 17 states, 17 states have (on average 256.52941176470586) internal successors, (4361), 17 states have internal predecessors, (4361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:44,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:22:44,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 615 [2023-09-01 07:22:44,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:22:45,128 INFO L130 PetriNetUnfolder]: 477/828 cut-off events. [2023-09-01 07:22:45,128 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-09-01 07:22:45,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1828 conditions, 828 events. 477/828 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 3846 event pairs, 419 based on Foata normal form. 2/422 useless extension candidates. Maximal degree in co-relation 1813. Up to 819 conditions per place. [2023-09-01 07:22:45,132 INFO L137 encePairwiseOnDemand]: 610/615 looper letters, 28 selfloop transitions, 12 changer transitions 0/40 dead transitions. [2023-09-01 07:22:45,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 40 transitions, 248 flow [2023-09-01 07:22:45,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:22:45,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:22:45,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1826 transitions. [2023-09-01 07:22:45,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42415795586527294 [2023-09-01 07:22:45,137 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1826 transitions. [2023-09-01 07:22:45,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1826 transitions. [2023-09-01 07:22:45,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:22:45,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1826 transitions. [2023-09-01 07:22:45,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 260.85714285714283) internal successors, (1826), 7 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:45,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 615.0) internal successors, (4920), 8 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:45,149 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 615.0) internal successors, (4920), 8 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:45,149 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 160 flow. Second operand 7 states and 1826 transitions. [2023-09-01 07:22:45,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 40 transitions, 248 flow [2023-09-01 07:22:45,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 40 transitions, 228 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 07:22:45,151 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 182 flow [2023-09-01 07:22:45,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=182, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-09-01 07:22:45,152 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2023-09-01 07:22:45,152 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 182 flow [2023-09-01 07:22:45,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 256.52941176470586) internal successors, (4361), 17 states have internal predecessors, (4361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:45,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:22:45,154 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:22:45,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 07:22:45,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:22:45,360 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:22:45,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:22:45,360 INFO L85 PathProgramCache]: Analyzing trace with hash -157181373, now seen corresponding path program 3 times [2023-09-01 07:22:45,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:22:45,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176815266] [2023-09-01 07:22:45,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:45,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:22:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:46,953 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:22:46,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:22:46,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176815266] [2023-09-01 07:22:46,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176815266] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:22:46,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170390399] [2023-09-01 07:22:46,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 07:22:46,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:22:46,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:22:46,957 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:22:46,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 07:22:47,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-09-01 07:22:47,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:22:47,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 40 conjunts are in the unsatisfiable core [2023-09-01 07:22:47,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:22:47,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 07:22:47,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:22:47,248 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 [2023-09-01 07:22:47,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:22:47,291 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 [2023-09-01 07:22:47,341 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-09-01 07:22:47,341 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 [2023-09-01 07:22:47,415 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-09-01 07:22:47,415 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 [2023-09-01 07:22:47,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:22:47,477 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 [2023-09-01 07:22:47,493 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-09-01 07:22:47,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:23:00,549 INFO L321 Elim1Store]: treesize reduction 212, result has 30.5 percent of original size [2023-09-01 07:23:00,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 103 [2023-09-01 07:23:00,640 INFO L321 Elim1Store]: treesize reduction 24, result has 70.4 percent of original size [2023-09-01 07:23:00,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 102 treesize of output 122 [2023-09-01 07:23:00,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-09-01 07:23:00,849 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-09-01 07:23:00,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170390399] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:23:00,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:23:00,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 30 [2023-09-01 07:23:00,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762684718] [2023-09-01 07:23:00,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:23:00,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-09-01 07:23:00,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:23:00,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-09-01 07:23:00,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=796, Unknown=7, NotChecked=0, Total=992 [2023-09-01 07:23:02,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:23:04,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:23:07,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:23:09,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:23:11,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:23:12,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:23:16,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:23:18,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:23:20,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:23:22,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:23:26,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:23:28,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:23:31,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:23:33,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:23:35,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:23:37,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:23:38,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:23:40,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:23:42,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:23:44,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:23:46,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:23:48,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:23:51,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:23:53,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:23:53,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 615 [2023-09-01 07:23:53,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 182 flow. Second operand has 32 states, 32 states have (on average 219.21875) internal successors, (7015), 32 states have internal predecessors, (7015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:23:53,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:23:53,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 615 [2023-09-01 07:23:53,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:23:53,717 INFO L130 PetriNetUnfolder]: 540/1026 cut-off events. [2023-09-01 07:23:53,718 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2023-09-01 07:23:53,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2248 conditions, 1026 events. 540/1026 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5933 event pairs, 211 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 2232. Up to 658 conditions per place. [2023-09-01 07:23:53,724 INFO L137 encePairwiseOnDemand]: 601/615 looper letters, 40 selfloop transitions, 28 changer transitions 0/68 dead transitions. [2023-09-01 07:23:53,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 386 flow [2023-09-01 07:23:53,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 07:23:53,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 07:23:53,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2902 transitions. [2023-09-01 07:23:53,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629768605378361 [2023-09-01 07:23:53,733 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2902 transitions. [2023-09-01 07:23:53,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2902 transitions. [2023-09-01 07:23:53,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:23:53,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2902 transitions. [2023-09-01 07:23:53,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 223.23076923076923) internal successors, (2902), 13 states have internal predecessors, (2902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:23:53,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 615.0) internal successors, (8610), 14 states have internal predecessors, (8610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:23:53,752 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 615.0) internal successors, (8610), 14 states have internal predecessors, (8610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:23:53,753 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 182 flow. Second operand 13 states and 2902 transitions. [2023-09-01 07:23:53,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 386 flow [2023-09-01 07:23:53,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 68 transitions, 366 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-09-01 07:23:53,755 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 274 flow [2023-09-01 07:23:53,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=274, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2023-09-01 07:23:53,756 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2023-09-01 07:23:53,756 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 274 flow [2023-09-01 07:23:53,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 219.21875) internal successors, (7015), 32 states have internal predecessors, (7015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:23:53,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:23:53,759 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:23:53,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 07:23:53,964 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 [2023-09-01 07:23:53,964 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-09-01 07:23:53,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:23:53,964 INFO L85 PathProgramCache]: Analyzing trace with hash -157181320, now seen corresponding path program 1 times [2023-09-01 07:23:53,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:23:53,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051263099] [2023-09-01 07:23:53,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:23:53,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:23:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:23:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:23:54,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:23:54,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051263099] [2023-09-01 07:23:54,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051263099] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:23:54,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2337005] [2023-09-01 07:23:54,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:23:54,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:23:54,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:23:54,777 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:23:54,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 07:23:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:23:54,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 67 conjunts are in the unsatisfiable core [2023-09-01 07:23:54,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:23:54,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:23:54,923 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2023-09-01 07:23:54,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 24 [2023-09-01 07:23:54,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 07:23:54,993 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 [2023-09-01 07:23:55,026 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 [2023-09-01 07:23:55,063 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 [2023-09-01 07:23:55,108 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 [2023-09-01 07:23:55,149 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 07:23:55,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 07:23:55,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 07:23:55,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 07:23:55,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 07:23:55,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 07:23:55,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 07:23:55,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:23:55,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 07:23:55,518 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:23:55,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:23:55,880 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_372 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_372))) (let ((.cse1 (select (select .cse0 ~o_2~0.base) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< (select (select .cse0 c_~o_0~0.base) c_~o_0~0.offset) (+ .cse1 2147483648)) (< .cse1 0) (< 0 .cse1))))) (forall ((v_ArrVal_372 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_372))) (let ((.cse3 (select (select .cse2 ~o_2~0.base) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< (select (select .cse2 c_~o_0~0.base) c_~o_0~0.offset) (+ .cse3 2147483648)) (< 9223372039002259455 .cse3) (<= .cse3 0)))))) is different from false [2023-09-01 07:23:55,913 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_371 (Array Int Int)) (v_ArrVal_372 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_371) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_372))) (let ((.cse0 (select (select .cse1 ~o_2~0.base) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< .cse0 0) (< (select (select .cse1 c_~o_0~0.base) c_~o_0~0.offset) (+ 2147483648 .cse0)) (< 0 .cse0))))) (forall ((v_ArrVal_371 (Array Int Int)) (v_ArrVal_372 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_371) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_372))) (let ((.cse2 (select (select .cse3 ~o_2~0.base) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (<= .cse2 0) (< (select (select .cse3 c_~o_0~0.base) c_~o_0~0.offset) (+ 2147483648 .cse2)) (< 9223372039002259455 .cse2)))))) is different from false [2023-09-01 07:24:11,477 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:11,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 469 treesize of output 255 [2023-09-01 07:24:11,564 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:11,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 7303 treesize of output 7123 [2023-09-01 07:24:11,842 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:11,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1251 treesize of output 1231 [2023-09-01 07:24:11,889 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:11,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1161 treesize of output 1090 [2023-09-01 07:24:11,938 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:11,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1081 treesize of output 1050 [2023-09-01 07:24:11,984 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:11,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1041 treesize of output 1010 [2023-09-01 07:24:12,035 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:12,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1001 treesize of output 990 [2023-09-01 07:27:47,798 WARN L222 SmtUtils]: Spent 11.01s on a formula simplification. DAG size of input: 532 DAG size of output: 639 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-09-01 07:27:53,771 WARN L222 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 441 DAG size of output: 443 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15