./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-array-int-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 d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 07:21:02,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:21:02,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:21:02,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:21:02,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:21:02,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:21:02,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:21:02,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:21:02,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:21:02,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:21:02,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:21:02,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:21:02,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:21:02,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:21:02,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:21:02,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:21:02,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:21:02,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:21:02,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:21:02,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:21:02,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:21:02,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:21:02,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:21:02,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:21:02,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:21:02,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:21:02,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:21:02,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:21:02,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:21:02,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:21:02,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:21:02,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:21:02,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:21:02,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:21:02,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:21:02,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:21:02,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:21:02,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:21:02,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:21:02,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:21:02,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:21:02,131 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:21:02,158 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:21:02,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:21:02,159 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:21:02,159 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:21:02,160 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:21:02,160 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:21:02,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:21:02,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:21:02,161 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:21:02,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:21:02,162 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:21:02,162 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:21:02,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:21:02,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:21:02,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:21:02,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:21:02,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:21:02,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:21:02,163 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:21:02,163 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:21:02,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:21:02,163 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:21:02,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:21:02,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:21:02,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:21:02,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:21:02,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:21:02,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:21:02,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:21:02,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:21:02,165 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:21:02,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:21:02,165 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:21:02,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:21:02,165 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:21:02,166 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:21:02,166 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:21:02,166 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:21:02,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:21:02,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:21:02,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:21:02,415 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:21:02,415 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:21:02,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c [2023-09-01 07:21:03,465 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:21:03,637 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:21:03,637 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c [2023-09-01 07:21:03,643 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edd04f512/22718e3fa8c045c5a81af1f79b2ef6ee/FLAGa3880fabf [2023-09-01 07:21:04,019 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edd04f512/22718e3fa8c045c5a81af1f79b2ef6ee [2023-09-01 07:21:04,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:21:04,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:21:04,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:21:04,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:21:04,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:21:04,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:21:04" (1/1) ... [2023-09-01 07:21:04,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@521ca4f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:04, skipping insertion in model container [2023-09-01 07:21:04,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:21:04" (1/1) ... [2023-09-01 07:21:04,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:21:04,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:21:04,185 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-array-int-subst.wvr.c[2781,2794] [2023-09-01 07:21:04,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:21:04,197 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:21:04,220 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-array-int-subst.wvr.c[2781,2794] [2023-09-01 07:21:04,237 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:21:04,251 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:21:04,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:04 WrapperNode [2023-09-01 07:21:04,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:21:04,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:21:04,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:21:04,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:21:04,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:04" (1/1) ... [2023-09-01 07:21:04,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:04" (1/1) ... [2023-09-01 07:21:04,314 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 347 [2023-09-01 07:21:04,315 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:21:04,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:21:04,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:21:04,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:21:04,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:04" (1/1) ... [2023-09-01 07:21:04,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:04" (1/1) ... [2023-09-01 07:21:04,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:04" (1/1) ... [2023-09-01 07:21:04,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:04" (1/1) ... [2023-09-01 07:21:04,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:04" (1/1) ... [2023-09-01 07:21:04,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:04" (1/1) ... [2023-09-01 07:21:04,358 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:04" (1/1) ... [2023-09-01 07:21:04,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:04" (1/1) ... [2023-09-01 07:21:04,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:21:04,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:21:04,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:21:04,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:21:04,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:04" (1/1) ... [2023-09-01 07:21:04,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:21:04,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:21:04,394 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 07:21:04,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 07:21:04,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:21:04,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:21:04,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:21:04,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:21:04,445 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 07:21:04,445 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 07:21:04,445 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 07:21:04,445 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 07:21:04,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 07:21:04,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 07:21:04,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:21:04,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 07:21:04,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:21:04,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:21:04,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:21:04,447 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 07:21:04,551 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:21:04,552 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:21:05,040 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:21:05,048 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:21:05,048 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-09-01 07:21:05,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:21:05 BoogieIcfgContainer [2023-09-01 07:21:05,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:21:05,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:21:05,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:21:05,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:21:05,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:21:04" (1/3) ... [2023-09-01 07:21:05,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@354e93ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:21:05, skipping insertion in model container [2023-09-01 07:21:05,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:04" (2/3) ... [2023-09-01 07:21:05,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@354e93ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:21:05, skipping insertion in model container [2023-09-01 07:21:05,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:21:05" (3/3) ... [2023-09-01 07:21:05,055 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2023-09-01 07:21:05,060 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:21:05,066 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:21:05,066 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-09-01 07:21:05,066 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:21:05,166 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 07:21:05,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 399 places, 424 transitions, 872 flow [2023-09-01 07:21:05,337 INFO L130 PetriNetUnfolder]: 35/421 cut-off events. [2023-09-01 07:21:05,337 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 07:21:05,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 421 events. 35/421 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1007 event pairs, 0 based on Foata normal form. 0/350 useless extension candidates. Maximal degree in co-relation 317. Up to 3 conditions per place. [2023-09-01 07:21:05,349 INFO L82 GeneralOperation]: Start removeDead. Operand has 399 places, 424 transitions, 872 flow [2023-09-01 07:21:05,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 397 transitions, 809 flow [2023-09-01 07:21:05,360 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:21:05,375 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 374 places, 397 transitions, 809 flow [2023-09-01 07:21:05,383 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 374 places, 397 transitions, 809 flow [2023-09-01 07:21:05,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 397 transitions, 809 flow [2023-09-01 07:21:05,443 INFO L130 PetriNetUnfolder]: 33/397 cut-off events. [2023-09-01 07:21:05,444 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 07:21:05,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 397 events. 33/397 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 948 event pairs, 0 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 317. Up to 3 conditions per place. [2023-09-01 07:21:05,460 INFO L119 LiptonReduction]: Number of co-enabled transitions 38184 [2023-09-01 07:21:19,867 INFO L134 LiptonReduction]: Checked pairs total: 51131 [2023-09-01 07:21:19,868 INFO L136 LiptonReduction]: Total number of compositions: 489 [2023-09-01 07:21:19,881 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 07:21:19,886 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;@5309724c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:21:19,886 INFO L358 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2023-09-01 07:21:19,888 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 07:21:19,888 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:21:19,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:19,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 07:21:19,889 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-09-01 07:21:19,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:19,892 INFO L85 PathProgramCache]: Analyzing trace with hash 55154, now seen corresponding path program 1 times [2023-09-01 07:21:19,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:19,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722647410] [2023-09-01 07:21:19,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:19,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:20,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:20,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722647410] [2023-09-01 07:21:20,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722647410] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:20,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:21:20,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:21:20,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158003435] [2023-09-01 07:21:20,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:20,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:21:20,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:20,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:21:20,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:21:20,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 388 out of 913 [2023-09-01 07:21:20,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 388.6666666666667) internal successors, (1166), 3 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:20,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:20,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 388 of 913 [2023-09-01 07:21:20,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:23,091 INFO L130 PetriNetUnfolder]: 25859/35997 cut-off events. [2023-09-01 07:21:23,092 INFO L131 PetriNetUnfolder]: For 1280/1280 co-relation queries the response was YES. [2023-09-01 07:21:23,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73173 conditions, 35997 events. 25859/35997 cut-off events. For 1280/1280 co-relation queries the response was YES. Maximal size of possible extension queue 1474. Compared 213617 event pairs, 22226 based on Foata normal form. 0/14469 useless extension candidates. Maximal degree in co-relation 34416. Up to 18003 conditions per place. [2023-09-01 07:21:23,268 INFO L137 encePairwiseOnDemand]: 895/913 looper letters, 115 selfloop transitions, 6 changer transitions 0/121 dead transitions. [2023-09-01 07:21:23,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 121 transitions, 514 flow [2023-09-01 07:21:23,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:21:23,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:21:23,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1303 transitions. [2023-09-01 07:21:23,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47572106608251186 [2023-09-01 07:21:23,284 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1303 transitions. [2023-09-01 07:21:23,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1303 transitions. [2023-09-01 07:21:23,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:23,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1303 transitions. [2023-09-01 07:21:23,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 434.3333333333333) internal successors, (1303), 3 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:23,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 913.0) internal successors, (3652), 4 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:23,305 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 913.0) internal successors, (3652), 4 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:23,306 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 155 flow. Second operand 3 states and 1303 transitions. [2023-09-01 07:21:23,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 121 transitions, 514 flow [2023-09-01 07:21:23,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 121 transitions, 496 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 07:21:23,325 INFO L231 Difference]: Finished difference. Result has 65 places, 69 transitions, 190 flow [2023-09-01 07:21:23,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=913, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=65, PETRI_TRANSITIONS=69} [2023-09-01 07:21:23,329 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -7 predicate places. [2023-09-01 07:21:23,329 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 69 transitions, 190 flow [2023-09-01 07:21:23,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 388.6666666666667) internal successors, (1166), 3 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:23,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:23,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:21:23,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:21:23,333 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-09-01 07:21:23,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:23,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1712135, now seen corresponding path program 1 times [2023-09-01 07:21:23,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:23,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516136565] [2023-09-01 07:21:23,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:23,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:23,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:23,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:23,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516136565] [2023-09-01 07:21:23,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516136565] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:21:23,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174163895] [2023-09-01 07:21:23,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:23,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:23,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:21:23,428 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:21:23,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 07:21:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:23,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:21:23,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:21:23,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:23,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:21:23,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:23,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174163895] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:21:23,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:21:23,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 07:21:23,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226373852] [2023-09-01 07:21:23,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:21:23,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 07:21:23,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:23,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 07:21:23,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:21:23,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 388 out of 913 [2023-09-01 07:21:23,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 69 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 389.14285714285717) internal successors, (2724), 7 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:23,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:23,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 388 of 913 [2023-09-01 07:21:23,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:29,912 INFO L130 PetriNetUnfolder]: 64655/89991 cut-off events. [2023-09-01 07:21:29,912 INFO L131 PetriNetUnfolder]: For 725/725 co-relation queries the response was YES. [2023-09-01 07:21:30,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182074 conditions, 89991 events. 64655/89991 cut-off events. For 725/725 co-relation queries the response was YES. Maximal size of possible extension queue 3344. Compared 593587 event pairs, 55565 based on Foata normal form. 0/36186 useless extension candidates. Maximal degree in co-relation 145575. Up to 18001 conditions per place. [2023-09-01 07:21:30,382 INFO L137 encePairwiseOnDemand]: 901/913 looper letters, 268 selfloop transitions, 33 changer transitions 0/301 dead transitions. [2023-09-01 07:21:30,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 301 transitions, 1340 flow [2023-09-01 07:21:30,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:21:30,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:21:30,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3026 transitions. [2023-09-01 07:21:30,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4734783289000156 [2023-09-01 07:21:30,389 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3026 transitions. [2023-09-01 07:21:30,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3026 transitions. [2023-09-01 07:21:30,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:30,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3026 transitions. [2023-09-01 07:21:30,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 432.2857142857143) internal successors, (3026), 7 states have internal predecessors, (3026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:30,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 913.0) internal successors, (7304), 8 states have internal predecessors, (7304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:30,407 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 913.0) internal successors, (7304), 8 states have internal predecessors, (7304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:30,407 INFO L175 Difference]: Start difference. First operand has 65 places, 69 transitions, 190 flow. Second operand 7 states and 3026 transitions. [2023-09-01 07:21:30,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 301 transitions, 1340 flow [2023-09-01 07:21:30,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 301 transitions, 1316 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:21:30,414 INFO L231 Difference]: Finished difference. Result has 72 places, 93 transitions, 397 flow [2023-09-01 07:21:30,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=913, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=397, PETRI_PLACES=72, PETRI_TRANSITIONS=93} [2023-09-01 07:21:30,415 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2023-09-01 07:21:30,415 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 93 transitions, 397 flow [2023-09-01 07:21:30,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 389.14285714285717) internal successors, (2724), 7 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:30,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:30,417 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-09-01 07:21:30,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 07:21:30,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:30,623 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-09-01 07:21:30,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:30,624 INFO L85 PathProgramCache]: Analyzing trace with hash 53078545, now seen corresponding path program 1 times [2023-09-01 07:21:30,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:30,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102159146] [2023-09-01 07:21:30,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:30,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:30,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:21:30,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:30,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102159146] [2023-09-01 07:21:30,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102159146] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:30,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:21:30,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:21:30,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822983569] [2023-09-01 07:21:30,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:30,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:21:30,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:30,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:21:30,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:21:30,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 388 out of 913 [2023-09-01 07:21:30,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 93 transitions, 397 flow. Second operand has 3 states, 3 states have (on average 389.3333333333333) internal successors, (1168), 3 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:30,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:30,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 388 of 913 [2023-09-01 07:21:30,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:36,902 INFO L130 PetriNetUnfolder]: 64646/89979 cut-off events. [2023-09-01 07:21:36,902 INFO L131 PetriNetUnfolder]: For 730/730 co-relation queries the response was YES. [2023-09-01 07:21:37,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182077 conditions, 89979 events. 64646/89979 cut-off events. For 730/730 co-relation queries the response was YES. Maximal size of possible extension queue 3456. Compared 597301 event pairs, 55565 based on Foata normal form. 2/36187 useless extension candidates. Maximal degree in co-relation 109218. Up to 89979 conditions per place. [2023-09-01 07:21:37,312 INFO L137 encePairwiseOnDemand]: 909/913 looper letters, 80 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2023-09-01 07:21:37,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 81 transitions, 478 flow [2023-09-01 07:21:37,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:21:37,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:21:37,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1228 transitions. [2023-09-01 07:21:37,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4483388097845929 [2023-09-01 07:21:37,316 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1228 transitions. [2023-09-01 07:21:37,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1228 transitions. [2023-09-01 07:21:37,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:37,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1228 transitions. [2023-09-01 07:21:37,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:37,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 913.0) internal successors, (3652), 4 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:37,327 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 913.0) internal successors, (3652), 4 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:37,327 INFO L175 Difference]: Start difference. First operand has 72 places, 93 transitions, 397 flow. Second operand 3 states and 1228 transitions. [2023-09-01 07:21:37,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 81 transitions, 478 flow [2023-09-01 07:21:37,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 81 transitions, 448 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-09-01 07:21:37,331 INFO L231 Difference]: Finished difference. Result has 69 places, 81 transitions, 288 flow [2023-09-01 07:21:37,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=913, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=67, 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=288, PETRI_PLACES=69, PETRI_TRANSITIONS=81} [2023-09-01 07:21:37,332 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-09-01 07:21:37,332 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 81 transitions, 288 flow [2023-09-01 07:21:37,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 389.3333333333333) internal successors, (1168), 3 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:37,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:37,334 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 07:21:37,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 07:21:37,334 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-09-01 07:21:37,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:37,335 INFO L85 PathProgramCache]: Analyzing trace with hash -531049294, now seen corresponding path program 2 times [2023-09-01 07:21:37,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:37,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073898324] [2023-09-01 07:21:37,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:37,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:37,447 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:37,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:37,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073898324] [2023-09-01 07:21:37,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073898324] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:21:37,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303436904] [2023-09-01 07:21:37,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:21:37,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:37,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:21:37,456 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:21:37,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 07:21:37,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:21:37,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:21:37,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 07:21:37,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:21:37,559 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:21:37,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:21:37,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303436904] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:37,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:21:37,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 07:21:37,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998554822] [2023-09-01 07:21:37,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:37,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:21:37,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:37,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:21:37,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:21:37,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 391 out of 913 [2023-09-01 07:21:37,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 81 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 392.0) internal successors, (1176), 3 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:37,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:37,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 391 of 913 [2023-09-01 07:21:37,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:43,598 INFO L130 PetriNetUnfolder]: 64646/89978 cut-off events. [2023-09-01 07:21:43,599 INFO L131 PetriNetUnfolder]: For 734/734 co-relation queries the response was YES. [2023-09-01 07:21:43,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182055 conditions, 89978 events. 64646/89978 cut-off events. For 734/734 co-relation queries the response was YES. Maximal size of possible extension queue 3463. Compared 596643 event pairs, 55565 based on Foata normal form. 1/36187 useless extension candidates. Maximal degree in co-relation 182043. Up to 89973 conditions per place. [2023-09-01 07:21:44,003 INFO L137 encePairwiseOnDemand]: 910/913 looper letters, 74 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2023-09-01 07:21:44,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 80 transitions, 438 flow [2023-09-01 07:21:44,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:21:44,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:21:44,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1234 transitions. [2023-09-01 07:21:44,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505293902884264 [2023-09-01 07:21:44,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1234 transitions. [2023-09-01 07:21:44,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1234 transitions. [2023-09-01 07:21:44,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:44,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1234 transitions. [2023-09-01 07:21:44,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 411.3333333333333) internal successors, (1234), 3 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:44,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 913.0) internal successors, (3652), 4 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:44,018 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 913.0) internal successors, (3652), 4 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:44,018 INFO L175 Difference]: Start difference. First operand has 69 places, 81 transitions, 288 flow. Second operand 3 states and 1234 transitions. [2023-09-01 07:21:44,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 80 transitions, 438 flow [2023-09-01 07:21:44,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 80 transitions, 437 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:21:44,022 INFO L231 Difference]: Finished difference. Result has 69 places, 80 transitions, 289 flow [2023-09-01 07:21:44,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=913, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=69, PETRI_TRANSITIONS=80} [2023-09-01 07:21:44,024 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-09-01 07:21:44,024 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 80 transitions, 289 flow [2023-09-01 07:21:44,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 392.0) internal successors, (1176), 3 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:44,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:44,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 07:21:44,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 07:21:44,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-09-01 07:21:44,230 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-09-01 07:21:44,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:44,230 INFO L85 PathProgramCache]: Analyzing trace with hash -466995559, now seen corresponding path program 1 times [2023-09-01 07:21:44,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:44,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781522780] [2023-09-01 07:21:44,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:44,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:44,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:44,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:44,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781522780] [2023-09-01 07:21:44,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781522780] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:44,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:21:44,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 07:21:44,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957632883] [2023-09-01 07:21:44,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:44,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:21:44,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:44,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:21:44,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:21:44,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 913 [2023-09-01 07:21:44,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 80 transitions, 289 flow. Second operand has 5 states, 5 states have (on average 380.2) internal successors, (1901), 5 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:44,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:44,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 913 [2023-09-01 07:21:44,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:56,959 INFO L130 PetriNetUnfolder]: 134531/186536 cut-off events. [2023-09-01 07:21:56,959 INFO L131 PetriNetUnfolder]: For 1610/1610 co-relation queries the response was YES. [2023-09-01 07:21:57,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377338 conditions, 186536 events. 134531/186536 cut-off events. For 1610/1610 co-relation queries the response was YES. Maximal size of possible extension queue 6869. Compared 1332562 event pairs, 112931 based on Foata normal form. 0/75636 useless extension candidates. Maximal degree in co-relation 377325. Up to 85701 conditions per place. [2023-09-01 07:21:57,822 INFO L137 encePairwiseOnDemand]: 905/913 looper letters, 189 selfloop transitions, 11 changer transitions 0/200 dead transitions. [2023-09-01 07:21:57,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 200 transitions, 1016 flow [2023-09-01 07:21:57,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:21:57,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:21:57,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2827 transitions. [2023-09-01 07:21:57,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423407917383821 [2023-09-01 07:21:57,832 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2827 transitions. [2023-09-01 07:21:57,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2827 transitions. [2023-09-01 07:21:57,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:57,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2827 transitions. [2023-09-01 07:21:57,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 403.85714285714283) internal successors, (2827), 7 states have internal predecessors, (2827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:57,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 913.0) internal successors, (7304), 8 states have internal predecessors, (7304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:57,845 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 913.0) internal successors, (7304), 8 states have internal predecessors, (7304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:57,845 INFO L175 Difference]: Start difference. First operand has 69 places, 80 transitions, 289 flow. Second operand 7 states and 2827 transitions. [2023-09-01 07:21:57,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 200 transitions, 1016 flow [2023-09-01 07:21:57,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 200 transitions, 1004 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:21:57,849 INFO L231 Difference]: Finished difference. Result has 78 places, 88 transitions, 379 flow [2023-09-01 07:21:57,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=913, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=379, PETRI_PLACES=78, PETRI_TRANSITIONS=88} [2023-09-01 07:21:57,850 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 6 predicate places. [2023-09-01 07:21:57,850 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 88 transitions, 379 flow [2023-09-01 07:21:57,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 380.2) internal successors, (1901), 5 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:57,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:57,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 07:21:57,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 07:21:57,851 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-09-01 07:21:57,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:57,852 INFO L85 PathProgramCache]: Analyzing trace with hash -466995632, now seen corresponding path program 1 times [2023-09-01 07:21:57,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:57,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768672195] [2023-09-01 07:21:57,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:57,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:57,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:57,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:57,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768672195] [2023-09-01 07:21:57,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768672195] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:57,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:21:57,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 07:21:57,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635155469] [2023-09-01 07:21:57,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:57,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:21:57,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:57,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:21:57,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:21:58,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 913 [2023-09-01 07:21:58,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 88 transitions, 379 flow. Second operand has 5 states, 5 states have (on average 380.2) internal successors, (1901), 5 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:58,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:58,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 913 [2023-09-01 07:21:58,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:22:20,563 INFO L130 PetriNetUnfolder]: 236376/327537 cut-off events. [2023-09-01 07:22:20,563 INFO L131 PetriNetUnfolder]: For 26543/26543 co-relation queries the response was YES. [2023-09-01 07:22:21,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 674333 conditions, 327537 events. 236376/327537 cut-off events. For 26543/26543 co-relation queries the response was YES. Maximal size of possible extension queue 11609. Compared 2472675 event pairs, 198980 based on Foata normal form. 3380/144036 useless extension candidates. Maximal degree in co-relation 674315. Up to 163778 conditions per place. [2023-09-01 07:22:22,542 INFO L137 encePairwiseOnDemand]: 907/913 looper letters, 134 selfloop transitions, 11 changer transitions 0/145 dead transitions. [2023-09-01 07:22:22,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 145 transitions, 822 flow [2023-09-01 07:22:22,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:22:22,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:22:22,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2011 transitions. [2023-09-01 07:22:22,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44052573932092004 [2023-09-01 07:22:22,547 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2011 transitions. [2023-09-01 07:22:22,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2011 transitions. [2023-09-01 07:22:22,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:22:22,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2011 transitions. [2023-09-01 07:22:22,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 402.2) internal successors, (2011), 5 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:22,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 913.0) internal successors, (5478), 6 states have internal predecessors, (5478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:22,555 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 913.0) internal successors, (5478), 6 states have internal predecessors, (5478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:22,555 INFO L175 Difference]: Start difference. First operand has 78 places, 88 transitions, 379 flow. Second operand 5 states and 2011 transitions. [2023-09-01 07:22:22,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 145 transitions, 822 flow [2023-09-01 07:22:22,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 145 transitions, 814 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-09-01 07:22:22,579 INFO L231 Difference]: Finished difference. Result has 84 places, 89 transitions, 417 flow [2023-09-01 07:22:22,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=913, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=417, PETRI_PLACES=84, PETRI_TRANSITIONS=89} [2023-09-01 07:22:22,581 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 12 predicate places. [2023-09-01 07:22:22,582 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 89 transitions, 417 flow [2023-09-01 07:22:22,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 380.2) internal successors, (1901), 5 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:22,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:22:22,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:22:22,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 07:22:22,588 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-09-01 07:22:22,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:22:22,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1646210741, now seen corresponding path program 1 times [2023-09-01 07:22:22,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:22:22,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816277420] [2023-09-01 07:22:22,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:22,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:22:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:22,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:22:22,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:22:22,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816277420] [2023-09-01 07:22:22,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816277420] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:22:22,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040582312] [2023-09-01 07:22:22,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:22,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:22:22,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:22:22,708 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:22:22,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 07:22:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:22,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:22:22,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:22:22,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:22:22,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:22:22,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040582312] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:22:22,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:22:22,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-09-01 07:22:22,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479219805] [2023-09-01 07:22:22,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:22:22,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:22:22,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:22:22,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:22:22,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:22:22,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 913 [2023-09-01 07:22:22,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 89 transitions, 417 flow. Second operand has 3 states, 3 states have (on average 396.3333333333333) internal successors, (1189), 3 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:22,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:22:22,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 913 [2023-09-01 07:22:22,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:22:43,688 INFO L130 PetriNetUnfolder]: 210886/292897 cut-off events. [2023-09-01 07:22:43,689 INFO L131 PetriNetUnfolder]: For 41356/41356 co-relation queries the response was YES. [2023-09-01 07:22:44,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 603942 conditions, 292897 events. 210886/292897 cut-off events. For 41356/41356 co-relation queries the response was YES. Maximal size of possible extension queue 10464. Compared 2195964 event pairs, 177880 based on Foata normal form. 3100/128817 useless extension candidates. Maximal degree in co-relation 603920. Up to 292897 conditions per place. [2023-09-01 07:22:45,384 INFO L137 encePairwiseOnDemand]: 910/913 looper letters, 85 selfloop transitions, 1 changer transitions 0/86 dead transitions. [2023-09-01 07:22:45,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 86 transitions, 573 flow [2023-09-01 07:22:45,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:22:45,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:22:45,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1242 transitions. [2023-09-01 07:22:45,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4534501642935378 [2023-09-01 07:22:45,387 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1242 transitions. [2023-09-01 07:22:45,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1242 transitions. [2023-09-01 07:22:45,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:22:45,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1242 transitions. [2023-09-01 07:22:45,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:45,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 913.0) internal successors, (3652), 4 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:45,392 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 913.0) internal successors, (3652), 4 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:45,392 INFO L175 Difference]: Start difference. First operand has 84 places, 89 transitions, 417 flow. Second operand 3 states and 1242 transitions. [2023-09-01 07:22:45,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 86 transitions, 573 flow [2023-09-01 07:22:45,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 86 transitions, 561 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-09-01 07:22:45,403 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 391 flow [2023-09-01 07:22:45,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=913, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=391, PETRI_PLACES=80, PETRI_TRANSITIONS=86} [2023-09-01 07:22:45,404 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 8 predicate places. [2023-09-01 07:22:45,404 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 391 flow [2023-09-01 07:22:45,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 396.3333333333333) internal successors, (1189), 3 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:45,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:22:45,404 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 07:22:45,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 07:22:45,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:22:45,610 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-09-01 07:22:45,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:22:45,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1648019062, now seen corresponding path program 1 times [2023-09-01 07:22:45,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:22:45,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646792245] [2023-09-01 07:22:45,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:45,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:22:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:45,679 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:22:45,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:22:45,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646792245] [2023-09-01 07:22:45,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646792245] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:22:45,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390816902] [2023-09-01 07:22:45,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:45,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:22:45,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:22:45,682 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:22:45,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 07:22:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:45,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 07:22:45,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:22:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:22:45,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:22:45,816 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:22:45,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390816902] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:22:45,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:22:45,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-09-01 07:22:45,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236938687] [2023-09-01 07:22:45,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:22:45,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 07:22:45,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:22:45,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 07:22:45,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 07:22:45,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 388 out of 913 [2023-09-01 07:22:45,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 86 transitions, 391 flow. Second operand has 13 states, 13 states have (on average 389.15384615384613) internal successors, (5059), 13 states have internal predecessors, (5059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:45,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:22:45,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 388 of 913 [2023-09-01 07:22:45,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand