./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-node-subst.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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-node-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 14:50:34,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:50:34,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:50:34,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:50:34,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:50:34,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:50:34,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:50:34,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:50:34,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:50:34,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:50:34,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:50:34,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:50:34,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:50:34,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:50:34,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:50:34,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:50:34,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:50:34,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:50:34,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:50:34,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:50:34,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:50:34,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:50:34,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:50:34,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:50:34,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:50:34,246 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:50:34,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:50:34,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:50:34,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:50:34,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:50:34,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:50:34,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:50:34,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:50:34,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:50:34,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:50:34,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:50:34,256 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:50:34,256 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:50:34,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:50:34,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:50:34,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:50:34,259 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:50:34,284 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:50:34,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:50:34,285 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:50:34,285 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:50:34,286 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:50:34,286 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:50:34,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:50:34,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:50:34,287 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:50:34,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:50:34,287 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:50:34,288 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:50:34,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:50:34,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:50:34,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:50:34,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:50:34,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:50:34,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:50:34,289 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:50:34,289 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:50:34,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:50:34,289 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:50:34,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:50:34,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:50:34,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:50:34,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:50:34,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:50:34,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:50:34,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:50:34,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:50:34,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:50:34,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:50:34,291 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:50:34,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:50:34,291 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:50:34,291 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:50:34,291 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:50:34,292 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:50:34,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:50:34,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:50:34,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:50:34,559 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:50:34,560 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:50:34,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2023-08-30 14:50:35,445 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:50:35,648 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:50:35,648 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2023-08-30 14:50:35,656 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b05baab73/5ce0989b56834644b0881067db208fcc/FLAGfd9b701bb [2023-08-30 14:50:35,671 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b05baab73/5ce0989b56834644b0881067db208fcc [2023-08-30 14:50:35,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:50:35,674 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:50:35,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:50:35,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:50:35,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:50:35,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:50:35" (1/1) ... [2023-08-30 14:50:35,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d5d02cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:50:35, skipping insertion in model container [2023-08-30 14:50:35,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:50:35" (1/1) ... [2023-08-30 14:50:35,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:50:35,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:50:35,861 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-node-subst.wvr.c[3996,4009] [2023-08-30 14:50:35,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:50:35,893 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:50:35,925 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-node-subst.wvr.c[3996,4009] [2023-08-30 14:50:35,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:50:35,949 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:50:35,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:50:35 WrapperNode [2023-08-30 14:50:35,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:50:35,950 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:50:35,950 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:50:35,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:50:35,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:50:35" (1/1) ... [2023-08-30 14:50:35,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:50:35" (1/1) ... [2023-08-30 14:50:36,014 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 497 [2023-08-30 14:50:36,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:50:36,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:50:36,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:50:36,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:50:36,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:50:35" (1/1) ... [2023-08-30 14:50:36,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:50:35" (1/1) ... [2023-08-30 14:50:36,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:50:35" (1/1) ... [2023-08-30 14:50:36,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:50:35" (1/1) ... [2023-08-30 14:50:36,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:50:35" (1/1) ... [2023-08-30 14:50:36,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:50:35" (1/1) ... [2023-08-30 14:50:36,066 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:50:35" (1/1) ... [2023-08-30 14:50:36,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:50:35" (1/1) ... [2023-08-30 14:50:36,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:50:36,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:50:36,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:50:36,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:50:36,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:50:35" (1/1) ... [2023-08-30 14:50:36,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:50:36,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:50:36,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 14:50:36,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 14:50:36,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:50:36,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:50:36,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:50:36,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:50:36,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 14:50:36,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 14:50:36,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 14:50:36,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 14:50:36,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 14:50:36,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 14:50:36,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:50:36,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 14:50:36,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:50:36,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:50:36,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:50:36,125 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 14:50:36,267 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:50:36,268 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:50:36,780 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:50:36,793 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:50:36,793 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 14:50:36,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:50:36 BoogieIcfgContainer [2023-08-30 14:50:36,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:50:36,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:50:36,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:50:36,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:50:36,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:50:35" (1/3) ... [2023-08-30 14:50:36,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db8c755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:50:36, skipping insertion in model container [2023-08-30 14:50:36,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:50:35" (2/3) ... [2023-08-30 14:50:36,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db8c755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:50:36, skipping insertion in model container [2023-08-30 14:50:36,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:50:36" (3/3) ... [2023-08-30 14:50:36,802 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2023-08-30 14:50:36,807 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:50:36,813 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:50:36,813 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-08-30 14:50:36,813 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:50:36,904 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:50:36,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 577 places, 614 transitions, 1252 flow [2023-08-30 14:50:37,095 INFO L130 PetriNetUnfolder]: 47/611 cut-off events. [2023-08-30 14:50:37,095 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 14:50:37,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 624 conditions, 611 events. 47/611 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1065 event pairs, 0 based on Foata normal form. 0/522 useless extension candidates. Maximal degree in co-relation 517. Up to 2 conditions per place. [2023-08-30 14:50:37,101 INFO L82 GeneralOperation]: Start removeDead. Operand has 577 places, 614 transitions, 1252 flow [2023-08-30 14:50:37,109 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 557 places, 593 transitions, 1201 flow [2023-08-30 14:50:37,112 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:50:37,122 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 557 places, 593 transitions, 1201 flow [2023-08-30 14:50:37,126 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 557 places, 593 transitions, 1201 flow [2023-08-30 14:50:37,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 557 places, 593 transitions, 1201 flow [2023-08-30 14:50:37,257 INFO L130 PetriNetUnfolder]: 46/593 cut-off events. [2023-08-30 14:50:37,257 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 14:50:37,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 593 events. 46/593 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1064 event pairs, 0 based on Foata normal form. 0/505 useless extension candidates. Maximal degree in co-relation 517. Up to 2 conditions per place. [2023-08-30 14:50:37,271 INFO L119 LiptonReduction]: Number of co-enabled transitions 34440 [2023-08-30 14:51:00,166 INFO L134 LiptonReduction]: Checked pairs total: 44964 [2023-08-30 14:51:00,166 INFO L136 LiptonReduction]: Total number of compositions: 761 [2023-08-30 14:51:00,179 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:51:00,183 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;@62cc1162, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:51:00,183 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2023-08-30 14:51:00,185 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 14:51:00,185 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:51:00,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:51:00,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 14:51:00,186 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 14:51:00,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:51:00,190 INFO L85 PathProgramCache]: Analyzing trace with hash 2435, now seen corresponding path program 1 times [2023-08-30 14:51:00,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:51:00,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260818802] [2023-08-30 14:51:00,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:51:00,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:51:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:51:00,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:51:00,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:51:00,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260818802] [2023-08-30 14:51:00,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260818802] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:51:00,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:51:00,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 14:51:00,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29109443] [2023-08-30 14:51:00,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:51:00,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 14:51:00,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:51:00,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 14:51:00,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 14:51:00,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 578 out of 1375 [2023-08-30 14:51:00,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 177 flow. Second operand has 2 states, 2 states have (on average 578.5) internal successors, (1157), 2 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:00,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:51:00,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 578 of 1375 [2023-08-30 14:51:00,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:51:01,029 INFO L130 PetriNetUnfolder]: 4309/6198 cut-off events. [2023-08-30 14:51:01,029 INFO L131 PetriNetUnfolder]: For 296/296 co-relation queries the response was YES. [2023-08-30 14:51:01,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12739 conditions, 6198 events. 4309/6198 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 29847 event pairs, 3825 based on Foata normal form. 0/3340 useless extension candidates. Maximal degree in co-relation 11796. Up to 6199 conditions per place. [2023-08-30 14:51:01,053 INFO L137 encePairwiseOnDemand]: 1367/1375 looper letters, 73 selfloop transitions, 0 changer transitions 0/73 dead transitions. [2023-08-30 14:51:01,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 73 transitions, 307 flow [2023-08-30 14:51:01,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 14:51:01,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 14:51:01,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1237 transitions. [2023-08-30 14:51:01,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44981818181818184 [2023-08-30 14:51:01,065 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1237 transitions. [2023-08-30 14:51:01,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1237 transitions. [2023-08-30 14:51:01,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:51:01,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1237 transitions. [2023-08-30 14:51:01,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 618.5) internal successors, (1237), 2 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:01,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1375.0) internal successors, (4125), 3 states have internal predecessors, (4125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:01,087 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1375.0) internal successors, (4125), 3 states have internal predecessors, (4125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:01,088 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 177 flow. Second operand 2 states and 1237 transitions. [2023-08-30 14:51:01,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 73 transitions, 307 flow [2023-08-30 14:51:01,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 298 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 14:51:01,099 INFO L231 Difference]: Finished difference. Result has 70 places, 73 transitions, 152 flow [2023-08-30 14:51:01,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=152, PETRI_PLACES=70, PETRI_TRANSITIONS=73} [2023-08-30 14:51:01,102 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -12 predicate places. [2023-08-30 14:51:01,102 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 73 transitions, 152 flow [2023-08-30 14:51:01,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 578.5) internal successors, (1157), 2 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:01,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:51:01,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:51:01,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:51:01,104 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 14:51:01,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:51:01,104 INFO L85 PathProgramCache]: Analyzing trace with hash 77732, now seen corresponding path program 1 times [2023-08-30 14:51:01,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:51:01,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890597595] [2023-08-30 14:51:01,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:51:01,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:51:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:51:01,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:51:01,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:51:01,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890597595] [2023-08-30 14:51:01,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890597595] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:51:01,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:51:01,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:51:01,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396873702] [2023-08-30 14:51:01,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:51:01,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:51:01,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:51:01,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:51:01,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:51:01,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 570 out of 1375 [2023-08-30 14:51:01,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 73 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 570.6666666666666) internal successors, (1712), 3 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:01,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:51:01,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 570 of 1375 [2023-08-30 14:51:01,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:51:01,913 INFO L130 PetriNetUnfolder]: 4309/6196 cut-off events. [2023-08-30 14:51:01,913 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:51:01,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12649 conditions, 6196 events. 4309/6196 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 29844 event pairs, 3825 based on Foata normal form. 0/3340 useless extension candidates. Maximal degree in co-relation 12646. Up to 6196 conditions per place. [2023-08-30 14:51:01,934 INFO L137 encePairwiseOnDemand]: 1372/1375 looper letters, 70 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2023-08-30 14:51:01,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 71 transitions, 290 flow [2023-08-30 14:51:01,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:51:01,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:51:01,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1783 transitions. [2023-08-30 14:51:01,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43224242424242426 [2023-08-30 14:51:01,938 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1783 transitions. [2023-08-30 14:51:01,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1783 transitions. [2023-08-30 14:51:01,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:51:01,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1783 transitions. [2023-08-30 14:51:01,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 594.3333333333334) internal successors, (1783), 3 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:01,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:01,948 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:01,948 INFO L175 Difference]: Start difference. First operand has 70 places, 73 transitions, 152 flow. Second operand 3 states and 1783 transitions. [2023-08-30 14:51:01,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 71 transitions, 290 flow [2023-08-30 14:51:01,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 290 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:51:01,950 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 150 flow [2023-08-30 14:51:01,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2023-08-30 14:51:01,951 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -12 predicate places. [2023-08-30 14:51:01,951 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 150 flow [2023-08-30 14:51:01,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 570.6666666666666) internal successors, (1712), 3 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:01,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:51:01,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:51:01,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:51:01,952 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 14:51:01,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:51:01,953 INFO L85 PathProgramCache]: Analyzing trace with hash 77731, now seen corresponding path program 1 times [2023-08-30 14:51:01,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:51:01,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819868463] [2023-08-30 14:51:01,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:51:01,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:51:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:51:02,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:51:02,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:51:02,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819868463] [2023-08-30 14:51:02,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819868463] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:51:02,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:51:02,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:51:02,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134680290] [2023-08-30 14:51:02,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:51:02,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:51:02,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:51:02,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:51:02,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:51:02,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 572 out of 1375 [2023-08-30 14:51:02,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 572.6666666666666) internal successors, (1718), 3 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:02,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:51:02,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 572 of 1375 [2023-08-30 14:51:02,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:51:02,721 INFO L130 PetriNetUnfolder]: 4309/6194 cut-off events. [2023-08-30 14:51:02,721 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:51:02,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12647 conditions, 6194 events. 4309/6194 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 29840 event pairs, 3825 based on Foata normal form. 0/3340 useless extension candidates. Maximal degree in co-relation 12643. Up to 6194 conditions per place. [2023-08-30 14:51:02,743 INFO L137 encePairwiseOnDemand]: 1372/1375 looper letters, 68 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2023-08-30 14:51:02,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 284 flow [2023-08-30 14:51:02,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:51:02,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:51:02,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1787 transitions. [2023-08-30 14:51:02,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4332121212121212 [2023-08-30 14:51:02,747 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1787 transitions. [2023-08-30 14:51:02,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1787 transitions. [2023-08-30 14:51:02,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:51:02,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1787 transitions. [2023-08-30 14:51:02,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 595.6666666666666) internal successors, (1787), 3 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:02,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:02,758 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:02,758 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 150 flow. Second operand 3 states and 1787 transitions. [2023-08-30 14:51:02,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 284 flow [2023-08-30 14:51:02,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:51:02,760 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 147 flow [2023-08-30 14:51:02,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2023-08-30 14:51:02,761 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -13 predicate places. [2023-08-30 14:51:02,761 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 147 flow [2023-08-30 14:51:02,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 572.6666666666666) internal successors, (1718), 3 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:02,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:51:02,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:51:02,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:51:02,762 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 14:51:02,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:51:02,763 INFO L85 PathProgramCache]: Analyzing trace with hash 77639, now seen corresponding path program 1 times [2023-08-30 14:51:02,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:51:02,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497546567] [2023-08-30 14:51:02,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:51:02,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:51:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:51:02,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:51:02,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:51:02,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497546567] [2023-08-30 14:51:02,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497546567] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:51:02,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:51:02,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:51:02,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860195170] [2023-08-30 14:51:02,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:51:02,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:51:02,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:51:02,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:51:02,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:51:02,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 569 out of 1375 [2023-08-30 14:51:02,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 569.6666666666666) internal successors, (1709), 3 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:02,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:51:02,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 569 of 1375 [2023-08-30 14:51:02,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:51:04,053 INFO L130 PetriNetUnfolder]: 8617/12381 cut-off events. [2023-08-30 14:51:04,054 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 14:51:04,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25276 conditions, 12381 events. 8617/12381 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 66718 event pairs, 7650 based on Foata normal form. 0/6679 useless extension candidates. Maximal degree in co-relation 25272. Up to 6195 conditions per place. [2023-08-30 14:51:04,086 INFO L137 encePairwiseOnDemand]: 1363/1375 looper letters, 125 selfloop transitions, 6 changer transitions 0/131 dead transitions. [2023-08-30 14:51:04,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 131 transitions, 539 flow [2023-08-30 14:51:04,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:51:04,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:51:04,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1844 transitions. [2023-08-30 14:51:04,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44703030303030306 [2023-08-30 14:51:04,090 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1844 transitions. [2023-08-30 14:51:04,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1844 transitions. [2023-08-30 14:51:04,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:51:04,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1844 transitions. [2023-08-30 14:51:04,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 614.6666666666666) internal successors, (1844), 3 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:04,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:04,100 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:04,100 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 147 flow. Second operand 3 states and 1844 transitions. [2023-08-30 14:51:04,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 131 transitions, 539 flow [2023-08-30 14:51:04,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 131 transitions, 538 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:51:04,102 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 202 flow [2023-08-30 14:51:04,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2023-08-30 14:51:04,103 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -10 predicate places. [2023-08-30 14:51:04,103 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 202 flow [2023-08-30 14:51:04,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 569.6666666666666) internal successors, (1709), 3 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:04,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:51:04,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:51:04,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:51:04,104 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 14:51:04,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:51:04,105 INFO L85 PathProgramCache]: Analyzing trace with hash 2412280, now seen corresponding path program 1 times [2023-08-30 14:51:04,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:51:04,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455546151] [2023-08-30 14:51:04,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:51:04,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:51:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:51:04,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:51:04,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:51:04,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455546151] [2023-08-30 14:51:04,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455546151] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:51:04,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:51:04,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:51:04,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184183223] [2023-08-30 14:51:04,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:51:04,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:51:04,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:51:04,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:51:04,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:51:04,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 569 out of 1375 [2023-08-30 14:51:04,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 570.0) internal successors, (1710), 3 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:04,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:51:04,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 569 of 1375 [2023-08-30 14:51:04,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:51:05,446 INFO L130 PetriNetUnfolder]: 8617/12378 cut-off events. [2023-08-30 14:51:05,447 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 14:51:05,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25291 conditions, 12378 events. 8617/12378 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 66615 event pairs, 7650 based on Foata normal form. 0/6687 useless extension candidates. Maximal degree in co-relation 25286. Up to 12378 conditions per place. [2023-08-30 14:51:05,483 INFO L137 encePairwiseOnDemand]: 1371/1375 looper letters, 70 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2023-08-30 14:51:05,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 71 transitions, 332 flow [2023-08-30 14:51:05,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:51:05,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:51:05,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1776 transitions. [2023-08-30 14:51:05,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43054545454545456 [2023-08-30 14:51:05,487 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1776 transitions. [2023-08-30 14:51:05,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1776 transitions. [2023-08-30 14:51:05,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:51:05,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1776 transitions. [2023-08-30 14:51:05,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 592.0) internal successors, (1776), 3 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:05,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:05,495 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:05,495 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 202 flow. Second operand 3 states and 1776 transitions. [2023-08-30 14:51:05,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 71 transitions, 332 flow [2023-08-30 14:51:05,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 71 transitions, 320 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:51:05,497 INFO L231 Difference]: Finished difference. Result has 69 places, 71 transitions, 180 flow [2023-08-30 14:51:05,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=69, PETRI_TRANSITIONS=71} [2023-08-30 14:51:05,497 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -13 predicate places. [2023-08-30 14:51:05,498 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 180 flow [2023-08-30 14:51:05,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 570.0) internal successors, (1710), 3 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:05,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:51:05,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:51:05,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:51:05,499 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 14:51:05,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:51:05,499 INFO L85 PathProgramCache]: Analyzing trace with hash 2414611, now seen corresponding path program 1 times [2023-08-30 14:51:05,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:51:05,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240297675] [2023-08-30 14:51:05,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:51:05,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:51:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:51:05,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:51:05,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:51:05,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240297675] [2023-08-30 14:51:05,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240297675] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:51:05,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:51:05,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:51:05,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216958137] [2023-08-30 14:51:05,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:51:05,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:51:05,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:51:05,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:51:05,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:51:05,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 572 out of 1375 [2023-08-30 14:51:05,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 71 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 573.0) internal successors, (1719), 3 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:05,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:51:05,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 572 of 1375 [2023-08-30 14:51:05,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:51:06,601 INFO L130 PetriNetUnfolder]: 8617/12374 cut-off events. [2023-08-30 14:51:06,601 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 14:51:06,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25278 conditions, 12374 events. 8617/12374 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 66587 event pairs, 7650 based on Foata normal form. 0/6683 useless extension candidates. Maximal degree in co-relation 25273. Up to 12374 conditions per place. [2023-08-30 14:51:06,644 INFO L137 encePairwiseOnDemand]: 1372/1375 looper letters, 68 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2023-08-30 14:51:06,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 69 transitions, 314 flow [2023-08-30 14:51:06,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:51:06,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:51:06,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1782 transitions. [2023-08-30 14:51:06,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432 [2023-08-30 14:51:06,647 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1782 transitions. [2023-08-30 14:51:06,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1782 transitions. [2023-08-30 14:51:06,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:51:06,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1782 transitions. [2023-08-30 14:51:06,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 594.0) internal successors, (1782), 3 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:06,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:06,655 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:06,655 INFO L175 Difference]: Start difference. First operand has 69 places, 71 transitions, 180 flow. Second operand 3 states and 1782 transitions. [2023-08-30 14:51:06,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 69 transitions, 314 flow [2023-08-30 14:51:06,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 69 transitions, 313 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:51:06,657 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 177 flow [2023-08-30 14:51:06,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2023-08-30 14:51:06,657 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -14 predicate places. [2023-08-30 14:51:06,658 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 177 flow [2023-08-30 14:51:06,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 573.0) internal successors, (1719), 3 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:06,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:51:06,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:51:06,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:51:06,659 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 14:51:06,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:51:06,659 INFO L85 PathProgramCache]: Analyzing trace with hash 2414678, now seen corresponding path program 1 times [2023-08-30 14:51:06,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:51:06,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543728932] [2023-08-30 14:51:06,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:51:06,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:51:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:51:06,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:51:06,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:51:06,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543728932] [2023-08-30 14:51:06,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543728932] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:51:06,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:51:06,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:51:06,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228318328] [2023-08-30 14:51:06,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:51:06,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:51:06,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:51:06,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:51:06,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:51:06,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 570 out of 1375 [2023-08-30 14:51:06,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 571.0) internal successors, (1713), 3 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:06,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:51:06,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 570 of 1375 [2023-08-30 14:51:06,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:51:07,764 INFO L130 PetriNetUnfolder]: 8617/12370 cut-off events. [2023-08-30 14:51:07,764 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 14:51:07,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25271 conditions, 12370 events. 8617/12370 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 66550 event pairs, 7650 based on Foata normal form. 2/6683 useless extension candidates. Maximal degree in co-relation 25266. Up to 12370 conditions per place. [2023-08-30 14:51:07,797 INFO L137 encePairwiseOnDemand]: 1372/1375 looper letters, 66 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2023-08-30 14:51:07,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 67 transitions, 307 flow [2023-08-30 14:51:07,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:51:07,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:51:07,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1774 transitions. [2023-08-30 14:51:07,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4300606060606061 [2023-08-30 14:51:07,801 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1774 transitions. [2023-08-30 14:51:07,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1774 transitions. [2023-08-30 14:51:07,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:51:07,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1774 transitions. [2023-08-30 14:51:07,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 591.3333333333334) internal successors, (1774), 3 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:07,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:07,808 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:07,808 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 177 flow. Second operand 3 states and 1774 transitions. [2023-08-30 14:51:07,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 67 transitions, 307 flow [2023-08-30 14:51:07,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 306 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:51:07,809 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 174 flow [2023-08-30 14:51:07,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2023-08-30 14:51:07,810 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -15 predicate places. [2023-08-30 14:51:07,810 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 174 flow [2023-08-30 14:51:07,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 571.0) internal successors, (1713), 3 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:07,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:51:07,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:51:07,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:51:07,811 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 14:51:07,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:51:07,811 INFO L85 PathProgramCache]: Analyzing trace with hash 2412279, now seen corresponding path program 1 times [2023-08-30 14:51:07,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:51:07,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67556935] [2023-08-30 14:51:07,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:51:07,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:51:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:51:07,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:51:07,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:51:07,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67556935] [2023-08-30 14:51:07,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67556935] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:51:07,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615620240] [2023-08-30 14:51:07,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:51:07,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:51:07,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:51:07,847 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:51:07,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 14:51:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:51:07,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:51:07,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:51:07,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:51:07,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:51:07,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:51:07,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615620240] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:51:07,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:51:07,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 14:51:07,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537335522] [2023-08-30 14:51:07,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:51:07,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:51:07,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:51:07,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:51:07,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:51:08,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 569 out of 1375 [2023-08-30 14:51:08,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 570.1428571428571) internal successors, (3991), 7 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:08,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:51:08,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 569 of 1375 [2023-08-30 14:51:08,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:51:11,203 INFO L130 PetriNetUnfolder]: 21541/30919 cut-off events. [2023-08-30 14:51:11,203 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2023-08-30 14:51:11,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63147 conditions, 30919 events. 21541/30919 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 1104. Compared 186755 event pairs, 19125 based on Foata normal form. 0/16701 useless extension candidates. Maximal degree in co-relation 63142. Up to 6189 conditions per place. [2023-08-30 14:51:11,310 INFO L137 encePairwiseOnDemand]: 1366/1375 looper letters, 273 selfloop transitions, 21 changer transitions 0/294 dead transitions. [2023-08-30 14:51:11,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 294 transitions, 1270 flow [2023-08-30 14:51:11,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:51:11,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:51:11,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3717 transitions. [2023-08-30 14:51:11,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505454545454545 [2023-08-30 14:51:11,316 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3717 transitions. [2023-08-30 14:51:11,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3717 transitions. [2023-08-30 14:51:11,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:51:11,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3717 transitions. [2023-08-30 14:51:11,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 619.5) internal successors, (3717), 6 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:11,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1375.0) internal successors, (9625), 7 states have internal predecessors, (9625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:11,329 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1375.0) internal successors, (9625), 7 states have internal predecessors, (9625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:11,329 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 174 flow. Second operand 6 states and 3717 transitions. [2023-08-30 14:51:11,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 294 transitions, 1270 flow [2023-08-30 14:51:11,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 294 transitions, 1269 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:51:11,332 INFO L231 Difference]: Finished difference. Result has 74 places, 82 transitions, 323 flow [2023-08-30 14:51:11,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=323, PETRI_PLACES=74, PETRI_TRANSITIONS=82} [2023-08-30 14:51:11,333 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2023-08-30 14:51:11,333 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 82 transitions, 323 flow [2023-08-30 14:51:11,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 570.1428571428571) internal successors, (3991), 7 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:11,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:51:11,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:51:11,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 14:51:11,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:51:11,539 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 14:51:11,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:51:11,539 INFO L85 PathProgramCache]: Analyzing trace with hash 74862323, now seen corresponding path program 1 times [2023-08-30 14:51:11,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:51:11,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248665149] [2023-08-30 14:51:11,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:51:11,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:51:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:51:11,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:51:11,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:51:11,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248665149] [2023-08-30 14:51:11,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248665149] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:51:11,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:51:11,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:51:11,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670307321] [2023-08-30 14:51:11,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:51:11,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:51:11,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:51:11,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:51:11,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:51:11,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 572 out of 1375 [2023-08-30 14:51:11,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 82 transitions, 323 flow. Second operand has 3 states, 3 states have (on average 573.3333333333334) internal successors, (1720), 3 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:11,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:51:11,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 572 of 1375 [2023-08-30 14:51:11,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:51:14,310 INFO L130 PetriNetUnfolder]: 21541/30914 cut-off events. [2023-08-30 14:51:14,310 INFO L131 PetriNetUnfolder]: For 245/245 co-relation queries the response was YES. [2023-08-30 14:51:14,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63188 conditions, 30914 events. 21541/30914 cut-off events. For 245/245 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 188536 event pairs, 19125 based on Foata normal form. 0/16710 useless extension candidates. Maximal degree in co-relation 63180. Up to 30914 conditions per place. [2023-08-30 14:51:14,399 INFO L137 encePairwiseOnDemand]: 1373/1375 looper letters, 80 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2023-08-30 14:51:14,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 81 transitions, 483 flow [2023-08-30 14:51:14,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:51:14,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:51:14,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1778 transitions. [2023-08-30 14:51:14,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43103030303030304 [2023-08-30 14:51:14,403 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1778 transitions. [2023-08-30 14:51:14,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1778 transitions. [2023-08-30 14:51:14,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:51:14,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1778 transitions. [2023-08-30 14:51:14,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 592.6666666666666) internal successors, (1778), 3 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:14,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:14,409 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:14,409 INFO L175 Difference]: Start difference. First operand has 74 places, 82 transitions, 323 flow. Second operand 3 states and 1778 transitions. [2023-08-30 14:51:14,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 81 transitions, 483 flow [2023-08-30 14:51:14,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 81 transitions, 453 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 14:51:14,411 INFO L231 Difference]: Finished difference. Result has 74 places, 81 transitions, 293 flow [2023-08-30 14:51:14,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=293, PETRI_PLACES=74, PETRI_TRANSITIONS=81} [2023-08-30 14:51:14,412 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2023-08-30 14:51:14,412 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 81 transitions, 293 flow [2023-08-30 14:51:14,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 573.3333333333334) internal successors, (1720), 3 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:14,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:51:14,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:51:14,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 14:51:14,413 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 14:51:14,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:51:14,413 INFO L85 PathProgramCache]: Analyzing trace with hash 74862322, now seen corresponding path program 1 times [2023-08-30 14:51:14,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:51:14,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46809731] [2023-08-30 14:51:14,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:51:14,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:51:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:51:14,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:51:14,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:51:14,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46809731] [2023-08-30 14:51:14,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46809731] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:51:14,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:51:14,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:51:14,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258135257] [2023-08-30 14:51:14,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:51:14,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:51:14,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:51:14,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:51:14,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:51:14,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 570 out of 1375 [2023-08-30 14:51:14,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 81 transitions, 293 flow. Second operand has 3 states, 3 states have (on average 571.3333333333334) internal successors, (1714), 3 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:14,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:51:14,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 570 of 1375 [2023-08-30 14:51:14,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:51:17,496 INFO L130 PetriNetUnfolder]: 21541/30909 cut-off events. [2023-08-30 14:51:17,497 INFO L131 PetriNetUnfolder]: For 249/249 co-relation queries the response was YES. [2023-08-30 14:51:17,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63162 conditions, 30909 events. 21541/30909 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 188538 event pairs, 19125 based on Foata normal form. 0/16712 useless extension candidates. Maximal degree in co-relation 63153. Up to 30909 conditions per place. [2023-08-30 14:51:17,594 INFO L137 encePairwiseOnDemand]: 1373/1375 looper letters, 79 selfloop transitions, 1 changer transitions 0/80 dead transitions. [2023-08-30 14:51:17,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 80 transitions, 451 flow [2023-08-30 14:51:17,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:51:17,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:51:17,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1771 transitions. [2023-08-30 14:51:17,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42933333333333334 [2023-08-30 14:51:17,598 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1771 transitions. [2023-08-30 14:51:17,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1771 transitions. [2023-08-30 14:51:17,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:51:17,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1771 transitions. [2023-08-30 14:51:17,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 590.3333333333334) internal successors, (1771), 3 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:17,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:17,604 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:17,604 INFO L175 Difference]: Start difference. First operand has 74 places, 81 transitions, 293 flow. Second operand 3 states and 1771 transitions. [2023-08-30 14:51:17,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 80 transitions, 451 flow [2023-08-30 14:51:17,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 80 transitions, 450 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:51:17,606 INFO L231 Difference]: Finished difference. Result has 74 places, 80 transitions, 292 flow [2023-08-30 14:51:17,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=74, PETRI_TRANSITIONS=80} [2023-08-30 14:51:17,606 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2023-08-30 14:51:17,607 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 80 transitions, 292 flow [2023-08-30 14:51:17,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 571.3333333333334) internal successors, (1714), 3 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:17,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:51:17,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:51:17,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:51:17,607 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 14:51:17,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:51:17,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1974230638, now seen corresponding path program 1 times [2023-08-30 14:51:17,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:51:17,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277970408] [2023-08-30 14:51:17,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:51:17,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:51:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:51:17,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:51:17,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:51:17,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277970408] [2023-08-30 14:51:17,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277970408] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:51:17,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:51:17,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:51:17,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840626295] [2023-08-30 14:51:17,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:51:17,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:51:17,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:51:17,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:51:17,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:51:17,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 569 out of 1375 [2023-08-30 14:51:17,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 80 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 570.6666666666666) internal successors, (1712), 3 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:17,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:51:17,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 569 of 1375 [2023-08-30 14:51:17,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:51:23,154 INFO L130 PetriNetUnfolder]: 43066/61754 cut-off events. [2023-08-30 14:51:23,154 INFO L131 PetriNetUnfolder]: For 489/489 co-relation queries the response was YES. [2023-08-30 14:51:23,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126123 conditions, 61754 events. 43066/61754 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 2201. Compared 412742 event pairs, 38250 based on Foata normal form. 0/33392 useless extension candidates. Maximal degree in co-relation 126114. Up to 30910 conditions per place. [2023-08-30 14:51:23,443 INFO L137 encePairwiseOnDemand]: 1363/1375 looper letters, 118 selfloop transitions, 6 changer transitions 0/124 dead transitions. [2023-08-30 14:51:23,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 124 transitions, 634 flow [2023-08-30 14:51:23,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:51:23,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:51:23,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1817 transitions. [2023-08-30 14:51:23,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4404848484848485 [2023-08-30 14:51:23,447 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1817 transitions. [2023-08-30 14:51:23,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1817 transitions. [2023-08-30 14:51:23,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:51:23,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1817 transitions. [2023-08-30 14:51:23,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 605.6666666666666) internal successors, (1817), 3 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:23,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:23,454 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:23,454 INFO L175 Difference]: Start difference. First operand has 74 places, 80 transitions, 292 flow. Second operand 3 states and 1817 transitions. [2023-08-30 14:51:23,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 124 transitions, 634 flow [2023-08-30 14:51:23,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 124 transitions, 633 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:51:23,456 INFO L231 Difference]: Finished difference. Result has 77 places, 85 transitions, 347 flow [2023-08-30 14:51:23,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=347, PETRI_PLACES=77, PETRI_TRANSITIONS=85} [2023-08-30 14:51:23,457 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -5 predicate places. [2023-08-30 14:51:23,457 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 85 transitions, 347 flow [2023-08-30 14:51:23,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 570.6666666666666) internal successors, (1712), 3 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:23,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:51:23,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:51:23,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 14:51:23,458 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 14:51:23,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:51:23,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1071601384, now seen corresponding path program 1 times [2023-08-30 14:51:23,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:51:23,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955343967] [2023-08-30 14:51:23,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:51:23,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:51:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:51:23,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:51:23,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:51:23,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955343967] [2023-08-30 14:51:23,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955343967] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:51:23,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489470166] [2023-08-30 14:51:23,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:51:23,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:51:23,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:51:23,498 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:51:23,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 14:51:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:51:23,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:51:23,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:51:23,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:51:23,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:51:23,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489470166] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:51:23,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:51:23,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 14:51:23,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508363451] [2023-08-30 14:51:23,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:51:23,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:51:23,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:51:23,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:51:23,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:51:23,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 566 out of 1375 [2023-08-30 14:51:23,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 85 transitions, 347 flow. Second operand has 3 states, 3 states have (on average 568.0) internal successors, (1704), 3 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:23,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:51:23,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 566 of 1375 [2023-08-30 14:51:23,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:51:30,178 INFO L130 PetriNetUnfolder]: 43065/61753 cut-off events. [2023-08-30 14:51:30,178 INFO L131 PetriNetUnfolder]: For 494/494 co-relation queries the response was YES. [2023-08-30 14:51:30,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126236 conditions, 61753 events. 43065/61753 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 2201. Compared 412740 event pairs, 38250 based on Foata normal form. 1/33422 useless extension candidates. Maximal degree in co-relation 126226. Up to 61753 conditions per place. [2023-08-30 14:51:30,495 INFO L137 encePairwiseOnDemand]: 1372/1375 looper letters, 82 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-08-30 14:51:30,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 84 transitions, 511 flow [2023-08-30 14:51:30,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:51:30,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:51:30,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1760 transitions. [2023-08-30 14:51:30,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2023-08-30 14:51:30,498 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1760 transitions. [2023-08-30 14:51:30,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1760 transitions. [2023-08-30 14:51:30,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:51:30,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1760 transitions. [2023-08-30 14:51:30,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 586.6666666666666) internal successors, (1760), 3 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:30,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:30,644 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:30,644 INFO L175 Difference]: Start difference. First operand has 77 places, 85 transitions, 347 flow. Second operand 3 states and 1760 transitions. [2023-08-30 14:51:30,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 84 transitions, 511 flow [2023-08-30 14:51:30,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 84 transitions, 499 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:51:30,651 INFO L231 Difference]: Finished difference. Result has 77 places, 84 transitions, 335 flow [2023-08-30 14:51:30,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=335, PETRI_PLACES=77, PETRI_TRANSITIONS=84} [2023-08-30 14:51:30,653 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -5 predicate places. [2023-08-30 14:51:30,653 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 84 transitions, 335 flow [2023-08-30 14:51:30,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 568.0) internal successors, (1704), 3 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:30,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:51:30,653 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 14:51:30,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 14:51:30,857 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,SelfDestructingSolverStorable11 [2023-08-30 14:51:30,858 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 14:51:30,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:51:30,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1144777850, now seen corresponding path program 2 times [2023-08-30 14:51:30,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:51:30,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586118448] [2023-08-30 14:51:30,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:51:30,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:51:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:51:30,918 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:51:30,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:51:30,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586118448] [2023-08-30 14:51:30,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586118448] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:51:30,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402136422] [2023-08-30 14:51:30,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:51:30,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:51:30,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:51:30,920 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:51:30,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 14:51:31,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:51:31,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:51:31,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:51:31,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:51:31,021 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:51:31,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:51:31,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402136422] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:51:31,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:51:31,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 14:51:31,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699343584] [2023-08-30 14:51:31,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:51:31,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:51:31,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:51:31,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:51:31,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 14:51:31,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 572 out of 1375 [2023-08-30 14:51:31,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 84 transitions, 335 flow. Second operand has 3 states, 3 states have (on average 573.0) internal successors, (1719), 3 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:31,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:51:31,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 572 of 1375 [2023-08-30 14:51:31,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:51:36,896 INFO L130 PetriNetUnfolder]: 43065/61750 cut-off events. [2023-08-30 14:51:36,896 INFO L131 PetriNetUnfolder]: For 489/489 co-relation queries the response was YES. [2023-08-30 14:51:37,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126190 conditions, 61750 events. 43065/61750 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 2201. Compared 412746 event pairs, 38250 based on Foata normal form. 3/33401 useless extension candidates. Maximal degree in co-relation 126180. Up to 61750 conditions per place. [2023-08-30 14:51:37,237 INFO L137 encePairwiseOnDemand]: 1371/1375 looper letters, 80 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2023-08-30 14:51:37,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 81 transitions, 467 flow [2023-08-30 14:51:37,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:51:37,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:51:37,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1776 transitions. [2023-08-30 14:51:37,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43054545454545456 [2023-08-30 14:51:37,240 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1776 transitions. [2023-08-30 14:51:37,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1776 transitions. [2023-08-30 14:51:37,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:51:37,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1776 transitions. [2023-08-30 14:51:37,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 592.0) internal successors, (1776), 3 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:37,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:37,245 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:37,245 INFO L175 Difference]: Start difference. First operand has 77 places, 84 transitions, 335 flow. Second operand 3 states and 1776 transitions. [2023-08-30 14:51:37,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 81 transitions, 467 flow [2023-08-30 14:51:37,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 81 transitions, 421 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-30 14:51:37,247 INFO L231 Difference]: Finished difference. Result has 71 places, 81 transitions, 261 flow [2023-08-30 14:51:37,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=71, PETRI_TRANSITIONS=81} [2023-08-30 14:51:37,247 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -11 predicate places. [2023-08-30 14:51:37,247 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 81 transitions, 261 flow [2023-08-30 14:51:37,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 573.0) internal successors, (1719), 3 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:37,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:51:37,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:51:37,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 14:51:37,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:51:37,453 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 14:51:37,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:51:37,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1055193015, now seen corresponding path program 1 times [2023-08-30 14:51:37,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:51:37,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101901702] [2023-08-30 14:51:37,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:51:37,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:51:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:51:37,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:51:37,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:51:37,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101901702] [2023-08-30 14:51:37,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101901702] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:51:37,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167857092] [2023-08-30 14:51:37,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:51:37,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:51:37,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:51:37,508 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:51:37,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 14:51:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:51:37,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:51:37,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:51:37,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:51:37,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:51:37,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167857092] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:51:37,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:51:37,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-08-30 14:51:37,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861303814] [2023-08-30 14:51:37,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:51:37,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:51:37,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:51:37,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:51:37,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:51:37,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 560 out of 1375 [2023-08-30 14:51:37,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 81 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 561.75) internal successors, (2247), 4 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:37,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:51:37,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 560 of 1375 [2023-08-30 14:51:37,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:51:43,655 INFO L130 PetriNetUnfolder]: 43064/61749 cut-off events. [2023-08-30 14:51:43,655 INFO L131 PetriNetUnfolder]: For 480/480 co-relation queries the response was YES. [2023-08-30 14:51:43,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126161 conditions, 61749 events. 43064/61749 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 2201. Compared 412772 event pairs, 38250 based on Foata normal form. 0/33391 useless extension candidates. Maximal degree in co-relation 126155. Up to 61744 conditions per place. [2023-08-30 14:51:43,912 INFO L137 encePairwiseOnDemand]: 1370/1375 looper letters, 73 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2023-08-30 14:51:43,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 80 transitions, 417 flow [2023-08-30 14:51:43,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:51:43,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:51:43,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2300 transitions. [2023-08-30 14:51:43,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2023-08-30 14:51:43,916 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2300 transitions. [2023-08-30 14:51:43,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2300 transitions. [2023-08-30 14:51:43,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:51:43,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2300 transitions. [2023-08-30 14:51:43,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:43,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:43,923 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:43,923 INFO L175 Difference]: Start difference. First operand has 71 places, 81 transitions, 261 flow. Second operand 4 states and 2300 transitions. [2023-08-30 14:51:43,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 80 transitions, 417 flow [2023-08-30 14:51:43,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 80 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:51:43,924 INFO L231 Difference]: Finished difference. Result has 73 places, 80 transitions, 270 flow [2023-08-30 14:51:43,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=73, PETRI_TRANSITIONS=80} [2023-08-30 14:51:43,925 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -9 predicate places. [2023-08-30 14:51:43,925 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 80 transitions, 270 flow [2023-08-30 14:51:43,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 561.75) internal successors, (2247), 4 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:43,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:51:43,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:51:43,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 14:51:44,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:51:44,130 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 14:51:44,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:51:44,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1536929800, now seen corresponding path program 1 times [2023-08-30 14:51:44,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:51:44,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221799980] [2023-08-30 14:51:44,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:51:44,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:51:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:51:44,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:51:44,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:51:44,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221799980] [2023-08-30 14:51:44,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221799980] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:51:44,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425432282] [2023-08-30 14:51:44,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:51:44,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:51:44,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:51:44,189 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:51:44,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 14:51:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:51:44,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:51:44,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:51:44,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 14:51:44,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:51:44,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425432282] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:51:44,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:51:44,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-08-30 14:51:44,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615165359] [2023-08-30 14:51:44,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:51:44,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:51:44,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:51:44,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:51:44,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:51:44,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 560 out of 1375 [2023-08-30 14:51:44,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 80 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 562.0) internal successors, (2248), 4 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:44,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:51:44,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 560 of 1375 [2023-08-30 14:51:44,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:51:48,996 INFO L130 PetriNetUnfolder]: 34453/49404 cut-off events. [2023-08-30 14:51:48,996 INFO L131 PetriNetUnfolder]: For 384/384 co-relation queries the response was YES. [2023-08-30 14:51:49,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100953 conditions, 49404 events. 34453/49404 cut-off events. For 384/384 co-relation queries the response was YES. Maximal size of possible extension queue 1786. Compared 322680 event pairs, 30600 based on Foata normal form. 1/26721 useless extension candidates. Maximal degree in co-relation 100947. Up to 49399 conditions per place. [2023-08-30 14:51:49,218 INFO L137 encePairwiseOnDemand]: 1370/1375 looper letters, 73 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2023-08-30 14:51:49,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 80 transitions, 430 flow [2023-08-30 14:51:49,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:51:49,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:51:49,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2300 transitions. [2023-08-30 14:51:49,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2023-08-30 14:51:49,222 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2300 transitions. [2023-08-30 14:51:49,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2300 transitions. [2023-08-30 14:51:49,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:51:49,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2300 transitions. [2023-08-30 14:51:49,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:49,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:49,228 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:49,228 INFO L175 Difference]: Start difference. First operand has 73 places, 80 transitions, 270 flow. Second operand 4 states and 2300 transitions. [2023-08-30 14:51:49,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 80 transitions, 430 flow [2023-08-30 14:51:49,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 80 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:51:49,229 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 292 flow [2023-08-30 14:51:49,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2023-08-30 14:51:49,229 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -6 predicate places. [2023-08-30 14:51:49,230 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 292 flow [2023-08-30 14:51:49,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 562.0) internal successors, (2248), 4 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:49,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:51:49,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:51:49,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 14:51:49,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 14:51:49,434 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 14:51:49,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:51:49,436 INFO L85 PathProgramCache]: Analyzing trace with hash 396618935, now seen corresponding path program 1 times [2023-08-30 14:51:49,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:51:49,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101126492] [2023-08-30 14:51:49,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:51:49,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:51:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:51:49,484 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 14:51:49,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:51:49,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101126492] [2023-08-30 14:51:49,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101126492] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:51:49,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213696697] [2023-08-30 14:51:49,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:51:49,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:51:49,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:51:49,486 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:51:49,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 14:51:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:51:49,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:51:49,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:51:49,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 14:51:49,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:51:49,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 14:51:49,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213696697] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:51:49,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:51:49,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:51:49,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530720220] [2023-08-30 14:51:49,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:51:49,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:51:49,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:51:49,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:51:49,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:51:49,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 569 out of 1375 [2023-08-30 14:51:49,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 292 flow. Second operand has 7 states, 7 states have (on average 571.0) internal successors, (3997), 7 states have internal predecessors, (3997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:51:49,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:51:49,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 569 of 1375 [2023-08-30 14:51:49,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:52:01,675 INFO L130 PetriNetUnfolder]: 86149/123468 cut-off events. [2023-08-30 14:52:01,676 INFO L131 PetriNetUnfolder]: For 967/967 co-relation queries the response was YES. [2023-08-30 14:52:02,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252239 conditions, 123468 events. 86149/123468 cut-off events. For 967/967 co-relation queries the response was YES. Maximal size of possible extension queue 4209. Compared 892226 event pairs, 76500 based on Foata normal form. 0/66768 useless extension candidates. Maximal degree in co-relation 252232. Up to 24717 conditions per place. [2023-08-30 14:52:02,354 INFO L137 encePairwiseOnDemand]: 1363/1375 looper letters, 227 selfloop transitions, 33 changer transitions 0/260 dead transitions. [2023-08-30 14:52:02,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 260 transitions, 1244 flow [2023-08-30 14:52:02,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:52:02,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:52:02,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4234 transitions. [2023-08-30 14:52:02,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398961038961039 [2023-08-30 14:52:02,359 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4234 transitions. [2023-08-30 14:52:02,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4234 transitions. [2023-08-30 14:52:02,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:52:02,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4234 transitions. [2023-08-30 14:52:02,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 604.8571428571429) internal successors, (4234), 7 states have internal predecessors, (4234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:52:02,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1375.0) internal successors, (11000), 8 states have internal predecessors, (11000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:52:02,369 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1375.0) internal successors, (11000), 8 states have internal predecessors, (11000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:52:02,369 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 292 flow. Second operand 7 states and 4234 transitions. [2023-08-30 14:52:02,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 260 transitions, 1244 flow [2023-08-30 14:52:02,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 260 transitions, 1225 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 14:52:02,372 INFO L231 Difference]: Finished difference. Result has 82 places, 104 transitions, 492 flow [2023-08-30 14:52:02,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=492, PETRI_PLACES=82, PETRI_TRANSITIONS=104} [2023-08-30 14:52:02,372 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 0 predicate places. [2023-08-30 14:52:02,372 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 104 transitions, 492 flow [2023-08-30 14:52:02,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 571.0) internal successors, (3997), 7 states have internal predecessors, (3997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:52:02,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:52:02,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:52:02,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 14:52:02,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 14:52:02,577 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 14:52:02,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:52:02,578 INFO L85 PathProgramCache]: Analyzing trace with hash 396618880, now seen corresponding path program 1 times [2023-08-30 14:52:02,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:52:02,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862882741] [2023-08-30 14:52:02,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:52:02,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:52:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:52:02,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 14:52:02,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:52:02,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862882741] [2023-08-30 14:52:02,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862882741] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:52:02,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554744727] [2023-08-30 14:52:02,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:52:02,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:52:02,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:52:02,641 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:52:02,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 14:52:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:52:02,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:52:02,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:52:02,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 14:52:02,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:52:02,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554744727] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:52:02,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:52:02,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 14:52:02,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559099762] [2023-08-30 14:52:02,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:52:02,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:52:02,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:52:02,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:52:02,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:52:02,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 569 out of 1375 [2023-08-30 14:52:02,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 104 transitions, 492 flow. Second operand has 4 states, 4 states have (on average 571.25) internal successors, (2285), 4 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:52:02,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:52:02,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 569 of 1375 [2023-08-30 14:52:02,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:52:15,272 INFO L130 PetriNetUnfolder]: 86113/123420 cut-off events. [2023-08-30 14:52:15,272 INFO L131 PetriNetUnfolder]: For 990/990 co-relation queries the response was YES. [2023-08-30 14:52:15,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252279 conditions, 123420 events. 86113/123420 cut-off events. For 990/990 co-relation queries the response was YES. Maximal size of possible extension queue 4234. Compared 894158 event pairs, 76500 based on Foata normal form. 8/66812 useless extension candidates. Maximal degree in co-relation 252269. Up to 98696 conditions per place. [2023-08-30 14:52:15,944 INFO L137 encePairwiseOnDemand]: 1366/1375 looper letters, 119 selfloop transitions, 12 changer transitions 0/131 dead transitions. [2023-08-30 14:52:15,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 131 transitions, 757 flow [2023-08-30 14:52:15,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:52:15,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:52:15,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2377 transitions. [2023-08-30 14:52:15,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43218181818181817 [2023-08-30 14:52:15,947 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2377 transitions. [2023-08-30 14:52:15,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2377 transitions. [2023-08-30 14:52:15,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:52:15,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2377 transitions. [2023-08-30 14:52:15,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 594.25) internal successors, (2377), 4 states have internal predecessors, (2377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:52:15,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:52:15,952 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:52:15,952 INFO L175 Difference]: Start difference. First operand has 82 places, 104 transitions, 492 flow. Second operand 4 states and 2377 transitions. [2023-08-30 14:52:15,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 131 transitions, 757 flow [2023-08-30 14:52:15,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 131 transitions, 727 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 14:52:15,955 INFO L231 Difference]: Finished difference. Result has 80 places, 92 transitions, 405 flow [2023-08-30 14:52:15,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=405, PETRI_PLACES=80, PETRI_TRANSITIONS=92} [2023-08-30 14:52:15,955 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -2 predicate places. [2023-08-30 14:52:15,955 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 92 transitions, 405 flow [2023-08-30 14:52:15,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 571.25) internal successors, (2285), 4 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:52:15,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:52:15,956 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:52:15,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 14:52:16,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:52:16,160 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 14:52:16,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:52:16,161 INFO L85 PathProgramCache]: Analyzing trace with hash 224174474, now seen corresponding path program 2 times [2023-08-30 14:52:16,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:52:16,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030030829] [2023-08-30 14:52:16,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:52:16,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:52:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:52:16,254 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 14:52:16,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:52:16,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030030829] [2023-08-30 14:52:16,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030030829] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:52:16,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685092555] [2023-08-30 14:52:16,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:52:16,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:52:16,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:52:16,256 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:52:16,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 14:52:16,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:52:16,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:52:16,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:52:16,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:52:16,381 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-30 14:52:16,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:52:16,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685092555] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:52:16,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:52:16,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-08-30 14:52:16,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943100474] [2023-08-30 14:52:16,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:52:16,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:52:16,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:52:16,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:52:16,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 14:52:16,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 572 out of 1375 [2023-08-30 14:52:16,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 92 transitions, 405 flow. Second operand has 3 states, 3 states have (on average 575.0) internal successors, (1725), 3 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:52:16,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:52:16,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 572 of 1375 [2023-08-30 14:52:16,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:52:28,468 INFO L130 PetriNetUnfolder]: 86113/123408 cut-off events. [2023-08-30 14:52:28,468 INFO L131 PetriNetUnfolder]: For 1049/1049 co-relation queries the response was YES. [2023-08-30 14:52:28,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252184 conditions, 123408 events. 86113/123408 cut-off events. For 1049/1049 co-relation queries the response was YES. Maximal size of possible extension queue 4255. Compared 894119 event pairs, 76500 based on Foata normal form. 12/66820 useless extension candidates. Maximal degree in co-relation 252173. Up to 123384 conditions per place. [2023-08-30 14:52:29,170 INFO L137 encePairwiseOnDemand]: 1371/1375 looper letters, 88 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2023-08-30 14:52:29,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 89 transitions, 553 flow [2023-08-30 14:52:29,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:52:29,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:52:29,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1770 transitions. [2023-08-30 14:52:29,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290909090909091 [2023-08-30 14:52:29,173 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1770 transitions. [2023-08-30 14:52:29,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1770 transitions. [2023-08-30 14:52:29,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:52:29,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1770 transitions. [2023-08-30 14:52:29,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 590.0) internal successors, (1770), 3 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:52:29,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:52:29,177 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:52:29,177 INFO L175 Difference]: Start difference. First operand has 80 places, 92 transitions, 405 flow. Second operand 3 states and 1770 transitions. [2023-08-30 14:52:29,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 89 transitions, 553 flow [2023-08-30 14:52:29,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 89 transitions, 498 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-30 14:52:29,180 INFO L231 Difference]: Finished difference. Result has 73 places, 89 transitions, 322 flow [2023-08-30 14:52:29,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=73, PETRI_TRANSITIONS=89} [2023-08-30 14:52:29,180 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -9 predicate places. [2023-08-30 14:52:29,180 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 89 transitions, 322 flow [2023-08-30 14:52:29,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 575.0) internal successors, (1725), 3 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:52:29,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:52:29,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:52:29,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 14:52:29,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 14:52:29,386 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 14:52:29,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:52:29,386 INFO L85 PathProgramCache]: Analyzing trace with hash 719084549, now seen corresponding path program 1 times [2023-08-30 14:52:29,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:52:29,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473617164] [2023-08-30 14:52:29,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:52:29,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:52:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:52:29,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 14:52:29,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:52:29,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473617164] [2023-08-30 14:52:29,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473617164] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:52:29,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:52:29,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:52:29,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257202664] [2023-08-30 14:52:29,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:52:29,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:52:29,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:52:29,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:52:29,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:52:29,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 560 out of 1375 [2023-08-30 14:52:29,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 89 transitions, 322 flow. Second operand has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:52:29,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:52:29,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 560 of 1375 [2023-08-30 14:52:29,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:52:41,297 INFO L130 PetriNetUnfolder]: 86109/123404 cut-off events. [2023-08-30 14:52:41,297 INFO L131 PetriNetUnfolder]: For 970/970 co-relation queries the response was YES. [2023-08-30 14:52:41,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252052 conditions, 123404 events. 86109/123404 cut-off events. For 970/970 co-relation queries the response was YES. Maximal size of possible extension queue 4255. Compared 894005 event pairs, 76500 based on Foata normal form. 0/66800 useless extension candidates. Maximal degree in co-relation 252045. Up to 123400 conditions per place. [2023-08-30 14:52:41,969 INFO L137 encePairwiseOnDemand]: 1371/1375 looper letters, 85 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2023-08-30 14:52:41,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 88 transitions, 494 flow [2023-08-30 14:52:41,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:52:41,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:52:41,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2293 transitions. [2023-08-30 14:52:41,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4169090909090909 [2023-08-30 14:52:41,972 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2293 transitions. [2023-08-30 14:52:41,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2293 transitions. [2023-08-30 14:52:41,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:52:41,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2293 transitions. [2023-08-30 14:52:41,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 573.25) internal successors, (2293), 4 states have internal predecessors, (2293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:52:41,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:52:41,976 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:52:41,976 INFO L175 Difference]: Start difference. First operand has 73 places, 89 transitions, 322 flow. Second operand 4 states and 2293 transitions. [2023-08-30 14:52:41,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 88 transitions, 494 flow [2023-08-30 14:52:41,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 88 transitions, 493 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:52:41,978 INFO L231 Difference]: Finished difference. Result has 75 places, 88 transitions, 323 flow [2023-08-30 14:52:41,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=323, PETRI_PLACES=75, PETRI_TRANSITIONS=88} [2023-08-30 14:52:41,979 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -7 predicate places. [2023-08-30 14:52:41,979 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 88 transitions, 323 flow [2023-08-30 14:52:41,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:52:41,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:52:41,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:52:41,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 14:52:41,979 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 14:52:41,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:52:41,979 INFO L85 PathProgramCache]: Analyzing trace with hash -718561934, now seen corresponding path program 1 times [2023-08-30 14:52:41,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:52:41,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683775158] [2023-08-30 14:52:41,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:52:41,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:52:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:52:42,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 14:52:42,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:52:42,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683775158] [2023-08-30 14:52:42,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683775158] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:52:42,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:52:42,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:52:42,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629354598] [2023-08-30 14:52:42,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:52:42,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:52:42,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:52:42,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:52:42,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:52:42,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 560 out of 1375 [2023-08-30 14:52:42,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 88 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 564.25) internal successors, (2257), 4 states have internal predecessors, (2257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:52:42,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:52:42,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 560 of 1375 [2023-08-30 14:52:42,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:52:53,973 INFO L130 PetriNetUnfolder]: 86105/123400 cut-off events. [2023-08-30 14:52:53,973 INFO L131 PetriNetUnfolder]: For 970/970 co-relation queries the response was YES. [2023-08-30 14:52:54,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252049 conditions, 123400 events. 86105/123400 cut-off events. For 970/970 co-relation queries the response was YES. Maximal size of possible extension queue 4255. Compared 894096 event pairs, 76500 based on Foata normal form. 0/66800 useless extension candidates. Maximal degree in co-relation 252042. Up to 123384 conditions per place. [2023-08-30 14:52:54,671 INFO L137 encePairwiseOnDemand]: 1371/1375 looper letters, 81 selfloop transitions, 6 changer transitions 0/87 dead transitions. [2023-08-30 14:52:54,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 87 transitions, 493 flow [2023-08-30 14:52:54,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:52:54,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:52:54,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2293 transitions. [2023-08-30 14:52:54,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4169090909090909 [2023-08-30 14:52:54,674 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2293 transitions. [2023-08-30 14:52:54,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2293 transitions. [2023-08-30 14:52:54,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:52:54,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2293 transitions. [2023-08-30 14:52:54,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 573.25) internal successors, (2293), 4 states have internal predecessors, (2293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:52:54,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:52:54,679 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:52:54,679 INFO L175 Difference]: Start difference. First operand has 75 places, 88 transitions, 323 flow. Second operand 4 states and 2293 transitions. [2023-08-30 14:52:54,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 87 transitions, 493 flow [2023-08-30 14:52:54,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 87 transitions, 487 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 14:52:54,681 INFO L231 Difference]: Finished difference. Result has 76 places, 87 transitions, 325 flow [2023-08-30 14:52:54,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=325, PETRI_PLACES=76, PETRI_TRANSITIONS=87} [2023-08-30 14:52:54,681 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -6 predicate places. [2023-08-30 14:52:54,681 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 87 transitions, 325 flow [2023-08-30 14:52:54,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 564.25) internal successors, (2257), 4 states have internal predecessors, (2257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:52:54,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:52:54,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:52:54,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 14:52:54,682 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 14:52:54,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:52:54,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1289482083, now seen corresponding path program 1 times [2023-08-30 14:52:54,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:52:54,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830177849] [2023-08-30 14:52:54,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:52:54,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:52:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:52:54,750 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 14:52:54,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:52:54,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830177849] [2023-08-30 14:52:54,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830177849] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:52:54,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:52:54,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:52:54,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736913682] [2023-08-30 14:52:54,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:52:54,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:52:54,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:52:54,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:52:54,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:52:54,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 560 out of 1375 [2023-08-30 14:52:54,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 87 transitions, 325 flow. Second operand has 4 states, 4 states have (on average 564.5) internal successors, (2258), 4 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:52:54,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:52:54,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 560 of 1375 [2023-08-30 14:52:54,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:53:04,377 INFO L130 PetriNetUnfolder]: 68893/98744 cut-off events. [2023-08-30 14:53:04,377 INFO L131 PetriNetUnfolder]: For 787/787 co-relation queries the response was YES. [2023-08-30 14:53:04,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201733 conditions, 98744 events. 68893/98744 cut-off events. For 787/787 co-relation queries the response was YES. Maximal size of possible extension queue 3452. Compared 700092 event pairs, 61200 based on Foata normal form. 4/53468 useless extension candidates. Maximal degree in co-relation 201726. Up to 98728 conditions per place. [2023-08-30 14:53:04,907 INFO L137 encePairwiseOnDemand]: 1371/1375 looper letters, 81 selfloop transitions, 6 changer transitions 0/87 dead transitions. [2023-08-30 14:53:04,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 87 transitions, 499 flow [2023-08-30 14:53:04,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:53:04,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:53:04,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2293 transitions. [2023-08-30 14:53:04,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4169090909090909 [2023-08-30 14:53:04,911 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2293 transitions. [2023-08-30 14:53:04,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2293 transitions. [2023-08-30 14:53:04,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:53:04,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2293 transitions. [2023-08-30 14:53:04,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 573.25) internal successors, (2293), 4 states have internal predecessors, (2293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:04,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:04,916 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:04,916 INFO L175 Difference]: Start difference. First operand has 76 places, 87 transitions, 325 flow. Second operand 4 states and 2293 transitions. [2023-08-30 14:53:04,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 87 transitions, 499 flow [2023-08-30 14:53:04,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 87 transitions, 490 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 14:53:04,918 INFO L231 Difference]: Finished difference. Result has 78 places, 87 transitions, 335 flow [2023-08-30 14:53:04,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=335, PETRI_PLACES=78, PETRI_TRANSITIONS=87} [2023-08-30 14:53:04,918 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -4 predicate places. [2023-08-30 14:53:04,918 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 87 transitions, 335 flow [2023-08-30 14:53:04,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 564.5) internal successors, (2258), 4 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:04,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:53:04,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:53:04,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 14:53:04,919 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 14:53:04,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:53:04,919 INFO L85 PathProgramCache]: Analyzing trace with hash -546910741, now seen corresponding path program 1 times [2023-08-30 14:53:04,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:53:04,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736274771] [2023-08-30 14:53:04,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:53:04,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:53:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:53:06,045 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:53:06,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:53:06,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736274771] [2023-08-30 14:53:06,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736274771] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:53:06,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995101978] [2023-08-30 14:53:06,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:53:06,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:53:06,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:53:06,047 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:53:06,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 14:53:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:53:06,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-30 14:53:06,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:53:06,262 INFO L321 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2023-08-30 14:53:06,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 31 [2023-08-30 14:53:06,362 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2023-08-30 14:53:06,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2023-08-30 14:53:06,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 14:53:06,533 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2023-08-30 14:53:06,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 27 treesize of output 45 [2023-08-30 14:53:06,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:53:06,746 INFO L321 Elim1Store]: treesize reduction 80, result has 31.6 percent of original size [2023-08-30 14:53:06,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 32 treesize of output 57 [2023-08-30 14:53:06,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:53:06,952 INFO L321 Elim1Store]: treesize reduction 80, result has 31.6 percent of original size [2023-08-30 14:53:06,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 32 treesize of output 57 [2023-08-30 14:53:07,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:53:07,196 INFO L321 Elim1Store]: treesize reduction 28, result has 42.9 percent of original size [2023-08-30 14:53:07,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 39 [2023-08-30 14:53:07,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:53:07,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:53:07,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:53:07,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:53:07,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:53:07,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:53:07,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:53:07,511 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_799 (Array Int Int)) (v_ArrVal_798 (Array Int Int)) (v_ArrVal_797 (Array Int Int)) (v_ArrVal_796 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_796) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_797) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_798) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_799) c_~get_5~0.base) (+ (* c_~id_3~0 4) c_~get_5~0.offset))))) is different from false [2023-08-30 14:53:08,189 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:53:08,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 44 [2023-08-30 14:53:08,214 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:53:08,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43075 treesize of output 42819 [2023-08-30 14:53:08,504 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 661 treesize of output 565 [2023-08-30 14:53:08,531 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 565 treesize of output 541 [2023-08-30 14:53:08,555 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 541 treesize of output 493 [2023-08-30 14:53:08,582 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 493 treesize of output 487 [2023-08-30 14:53:08,606 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 487 treesize of output 475 [2023-08-30 14:53:08,633 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 666 treesize of output 474 [2023-08-30 14:53:09,898 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-30 14:53:09,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995101978] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:53:09,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:53:09,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2023-08-30 14:53:09,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702860363] [2023-08-30 14:53:09,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:53:09,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-30 14:53:09,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:53:09,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-30 14:53:09,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1039, Unknown=20, NotChecked=70, Total=1406 [2023-08-30 14:53:10,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 468 out of 1375 [2023-08-30 14:53:10,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 87 transitions, 335 flow. Second operand has 38 states, 38 states have (on average 469.3421052631579) internal successors, (17835), 38 states have internal predecessors, (17835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:10,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:53:10,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 468 of 1375 [2023-08-30 14:53:10,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:53:15,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:53:25,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:53:27,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:53:31,676 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ (* c_~id_3~0 4) c_~get_5~0.offset)) (.cse0 (+ |c_#StackHeapBarrier| 1))) (and (= (select |c_#valid| |c_ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base|) (forall ((v_ArrVal_799 (Array Int Int)) (v_ArrVal_798 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_798) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_799) c_~get_5~0.base) .cse1)))) (= (select |c_#valid| |c_ULTIMATE.start_main_~#t3~0#1.base|) 1) (<= 0 c_~id_3~0) (<= .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base|) (forall ((v_ArrVal_799 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_799) c_~get_5~0.base) .cse1)))) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#t1~0#1.base|) (<= .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base|))) is different from false