./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 TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-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 TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 14:43:03,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:43:03,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:43:03,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:43:03,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:43:03,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:43:03,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:43:03,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:43:03,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:43:03,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:43:03,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:43:03,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:43:03,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:43:03,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:43:03,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:43:03,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:43:03,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:43:03,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:43:03,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:43:03,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:43:03,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:43:03,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:43:03,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:43:03,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:43:03,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:43:03,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:43:03,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:43:03,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:43:03,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:43:03,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:43:03,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:43:03,951 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:43:03,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:43:03,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:43:03,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:43:03,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:43:03,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:43:03,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:43:03,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:43:03,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:43:03,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:43:03,957 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:43:03,981 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:43:03,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:43:03,982 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:43:03,982 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:43:03,983 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:43:03,983 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:43:03,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:43:03,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:43:03,984 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:43:03,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:43:03,985 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:43:03,985 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:43:03,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:43:03,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:43:03,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:43:03,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:43:03,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:43:03,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:43:03,986 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:43:03,986 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:43:03,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:43:03,986 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:43:03,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:43:03,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:43:03,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:43:03,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:43:03,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:43:03,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:43:03,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:43:03,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:43:03,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:43:03,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:43:03,988 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:43:03,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:43:03,988 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:43:03,988 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:43:03,989 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:43:03,989 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:43:04,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:43:04,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:43:04,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:43:04,235 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:43:04,235 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:43:04,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c [2023-08-30 14:43:05,139 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:43:05,300 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:43:05,301 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c [2023-08-30 14:43:05,305 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/278cb2240/95d3e8331ab944bda81923f66e7445c8/FLAGd5bdb0779 [2023-08-30 14:43:05,315 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/278cb2240/95d3e8331ab944bda81923f66e7445c8 [2023-08-30 14:43:05,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:43:05,318 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:43:05,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:43:05,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:43:05,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:43:05,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:43:05" (1/1) ... [2023-08-30 14:43:05,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31908cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:05, skipping insertion in model container [2023-08-30 14:43:05,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:43:05" (1/1) ... [2023-08-30 14:43:05,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:43:05,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:43:05,495 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] [2023-08-30 14:43:05,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:43:05,512 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:43:05,541 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] [2023-08-30 14:43:05,544 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:43:05,554 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:43:05,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:05 WrapperNode [2023-08-30 14:43:05,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:43:05,555 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:43:05,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:43:05,555 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:43:05,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:05" (1/1) ... [2023-08-30 14:43:05,576 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:05" (1/1) ... [2023-08-30 14:43:05,612 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 347 [2023-08-30 14:43:05,615 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:43:05,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:43:05,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:43:05,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:43:05,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:05" (1/1) ... [2023-08-30 14:43:05,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:05" (1/1) ... [2023-08-30 14:43:05,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:05" (1/1) ... [2023-08-30 14:43:05,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:05" (1/1) ... [2023-08-30 14:43:05,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:05" (1/1) ... [2023-08-30 14:43:05,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:05" (1/1) ... [2023-08-30 14:43:05,648 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:05" (1/1) ... [2023-08-30 14:43:05,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:05" (1/1) ... [2023-08-30 14:43:05,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:43:05,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:43:05,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:43:05,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:43:05,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:05" (1/1) ... [2023-08-30 14:43:05,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:43:05,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:43:05,692 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 14:43:05,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 14:43:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:43:05,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:43:05,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:43:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:43:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 14:43:05,725 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 14:43:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 14:43:05,725 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 14:43:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 14:43:05,725 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 14:43:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:43:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 14:43:05,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:43:05,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:43:05,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:43:05,727 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 14:43:05,849 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:43:05,865 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:43:06,300 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:43:06,308 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:43:06,311 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 14:43:06,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:43:06 BoogieIcfgContainer [2023-08-30 14:43:06,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:43:06,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:43:06,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:43:06,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:43:06,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:43:05" (1/3) ... [2023-08-30 14:43:06,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea39ba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:43:06, skipping insertion in model container [2023-08-30 14:43:06,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:05" (2/3) ... [2023-08-30 14:43:06,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea39ba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:43:06, skipping insertion in model container [2023-08-30 14:43:06,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:43:06" (3/3) ... [2023-08-30 14:43:06,320 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2023-08-30 14:43:06,325 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:43:06,331 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:43:06,331 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-08-30 14:43:06,331 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:43:06,446 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:43:06,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 399 places, 424 transitions, 872 flow [2023-08-30 14:43:06,609 INFO L130 PetriNetUnfolder]: 35/421 cut-off events. [2023-08-30 14:43:06,609 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 14:43:06,618 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. [2023-08-30 14:43:06,619 INFO L82 GeneralOperation]: Start removeDead. Operand has 399 places, 424 transitions, 872 flow [2023-08-30 14:43:06,627 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 397 transitions, 809 flow [2023-08-30 14:43:06,630 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:43:06,639 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 374 places, 397 transitions, 809 flow [2023-08-30 14:43:06,641 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 374 places, 397 transitions, 809 flow [2023-08-30 14:43:06,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 397 transitions, 809 flow [2023-08-30 14:43:06,689 INFO L130 PetriNetUnfolder]: 33/397 cut-off events. [2023-08-30 14:43:06,689 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 14:43:06,692 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. [2023-08-30 14:43:06,705 INFO L119 LiptonReduction]: Number of co-enabled transitions 38184 [2023-08-30 14:43:20,145 INFO L134 LiptonReduction]: Checked pairs total: 51131 [2023-08-30 14:43:20,145 INFO L136 LiptonReduction]: Total number of compositions: 489 [2023-08-30 14:43:20,155 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:43:20,158 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;@20a7e544, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:43:20,159 INFO L358 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2023-08-30 14:43:20,161 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:43:20,168 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:43:20,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:43:20,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:43:20,170 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 14:43:20,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:43:20,174 INFO L85 PathProgramCache]: Analyzing trace with hash 55154, now seen corresponding path program 1 times [2023-08-30 14:43:20,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:43:20,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940971721] [2023-08-30 14:43:20,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:20,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:43:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:20,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:43:20,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:43:20,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940971721] [2023-08-30 14:43:20,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940971721] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:43:20,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:43:20,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:43:20,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063211019] [2023-08-30 14:43:20,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:43:20,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:43:20,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:20,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:43:20,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:43:20,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 388 out of 913 [2023-08-30 14:43:20,491 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) [2023-08-30 14:43:20,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:20,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 388 of 913 [2023-08-30 14:43:20,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:43:23,217 INFO L130 PetriNetUnfolder]: 25859/35997 cut-off events. [2023-08-30 14:43:23,217 INFO L131 PetriNetUnfolder]: For 1280/1280 co-relation queries the response was YES. [2023-08-30 14:43:23,250 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. [2023-08-30 14:43:23,391 INFO L137 encePairwiseOnDemand]: 895/913 looper letters, 115 selfloop transitions, 6 changer transitions 0/121 dead transitions. [2023-08-30 14:43:23,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 121 transitions, 514 flow [2023-08-30 14:43:23,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:43:23,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:43:23,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1303 transitions. [2023-08-30 14:43:23,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47572106608251186 [2023-08-30 14:43:23,407 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1303 transitions. [2023-08-30 14:43:23,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1303 transitions. [2023-08-30 14:43:23,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:43:23,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1303 transitions. [2023-08-30 14:43:23,418 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) [2023-08-30 14:43:23,426 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) [2023-08-30 14:43:23,427 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) [2023-08-30 14:43:23,428 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 155 flow. Second operand 3 states and 1303 transitions. [2023-08-30 14:43:23,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 121 transitions, 514 flow [2023-08-30 14:43:23,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 121 transitions, 496 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 14:43:23,447 INFO L231 Difference]: Finished difference. Result has 65 places, 69 transitions, 190 flow [2023-08-30 14:43:23,448 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} [2023-08-30 14:43:23,451 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -7 predicate places. [2023-08-30 14:43:23,451 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 69 transitions, 190 flow [2023-08-30 14:43:23,452 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) [2023-08-30 14:43:23,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:43:23,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:43:23,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:43:23,455 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 14:43:23,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:43:23,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1712135, now seen corresponding path program 1 times [2023-08-30 14:43:23,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:43:23,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832607436] [2023-08-30 14:43:23,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:23,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:43:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:23,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:43:23,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:43:23,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832607436] [2023-08-30 14:43:23,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832607436] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:43:23,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040858511] [2023-08-30 14:43:23,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:23,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:43:23,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:43:23,557 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:43:23,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 14:43:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:23,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:43:23,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:43:23,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:43:23,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:43:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:43:23,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040858511] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:43:23,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:43:23,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 14:43:23,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107980313] [2023-08-30 14:43:23,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:43:23,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:43:23,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:23,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:43:23,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:43:23,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 388 out of 913 [2023-08-30 14:43:23,786 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) [2023-08-30 14:43:23,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:23,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 388 of 913 [2023-08-30 14:43:23,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:43:29,546 INFO L130 PetriNetUnfolder]: 64655/89991 cut-off events. [2023-08-30 14:43:29,546 INFO L131 PetriNetUnfolder]: For 725/725 co-relation queries the response was YES. [2023-08-30 14:43:29,633 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. [2023-08-30 14:43:29,920 INFO L137 encePairwiseOnDemand]: 901/913 looper letters, 268 selfloop transitions, 33 changer transitions 0/301 dead transitions. [2023-08-30 14:43:29,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 301 transitions, 1340 flow [2023-08-30 14:43:29,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:43:29,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:43:29,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3026 transitions. [2023-08-30 14:43:29,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4734783289000156 [2023-08-30 14:43:29,927 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3026 transitions. [2023-08-30 14:43:29,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3026 transitions. [2023-08-30 14:43:29,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:43:29,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3026 transitions. [2023-08-30 14:43:29,934 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) [2023-08-30 14:43:29,942 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) [2023-08-30 14:43:29,944 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) [2023-08-30 14:43:29,944 INFO L175 Difference]: Start difference. First operand has 65 places, 69 transitions, 190 flow. Second operand 7 states and 3026 transitions. [2023-08-30 14:43:29,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 301 transitions, 1340 flow [2023-08-30 14:43:29,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 301 transitions, 1316 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:43:29,950 INFO L231 Difference]: Finished difference. Result has 72 places, 93 transitions, 397 flow [2023-08-30 14:43:29,951 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} [2023-08-30 14:43:29,951 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2023-08-30 14:43:29,951 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 93 transitions, 397 flow [2023-08-30 14:43:29,953 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) [2023-08-30 14:43:29,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:43:29,953 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 14:43:29,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 14:43:30,158 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 [2023-08-30 14:43:30,159 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 14:43:30,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:43:30,159 INFO L85 PathProgramCache]: Analyzing trace with hash 53078545, now seen corresponding path program 1 times [2023-08-30 14:43:30,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:43:30,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059037748] [2023-08-30 14:43:30,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:30,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:43:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:30,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:43:30,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:43:30,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059037748] [2023-08-30 14:43:30,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059037748] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:43:30,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:43:30,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:43:30,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297818258] [2023-08-30 14:43:30,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:43:30,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:43:30,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:30,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:43:30,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:43:30,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 388 out of 913 [2023-08-30 14:43:30,222 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) [2023-08-30 14:43:30,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:30,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 388 of 913 [2023-08-30 14:43:30,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:43:36,146 INFO L130 PetriNetUnfolder]: 64646/89979 cut-off events. [2023-08-30 14:43:36,146 INFO L131 PetriNetUnfolder]: For 730/730 co-relation queries the response was YES. [2023-08-30 14:43:36,240 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. [2023-08-30 14:43:36,481 INFO L137 encePairwiseOnDemand]: 909/913 looper letters, 80 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2023-08-30 14:43:36,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 81 transitions, 478 flow [2023-08-30 14:43:36,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:43:36,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:43:36,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1228 transitions. [2023-08-30 14:43:36,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4483388097845929 [2023-08-30 14:43:36,484 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1228 transitions. [2023-08-30 14:43:36,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1228 transitions. [2023-08-30 14:43:36,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:43:36,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1228 transitions. [2023-08-30 14:43:36,487 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) [2023-08-30 14:43:36,490 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) [2023-08-30 14:43:36,491 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) [2023-08-30 14:43:36,491 INFO L175 Difference]: Start difference. First operand has 72 places, 93 transitions, 397 flow. Second operand 3 states and 1228 transitions. [2023-08-30 14:43:36,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 81 transitions, 478 flow [2023-08-30 14:43:36,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 81 transitions, 448 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 14:43:36,496 INFO L231 Difference]: Finished difference. Result has 69 places, 81 transitions, 288 flow [2023-08-30 14:43:36,496 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} [2023-08-30 14:43:36,498 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-08-30 14:43:36,498 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 81 transitions, 288 flow [2023-08-30 14:43:36,498 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) [2023-08-30 14:43:36,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:43:36,499 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 14:43:36,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:43:36,499 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 14:43:36,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:43:36,499 INFO L85 PathProgramCache]: Analyzing trace with hash -531049294, now seen corresponding path program 2 times [2023-08-30 14:43:36,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:43:36,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328108898] [2023-08-30 14:43:36,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:36,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:43:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:36,597 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:43:36,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:43:36,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328108898] [2023-08-30 14:43:36,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328108898] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:43:36,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144878016] [2023-08-30 14:43:36,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:43:36,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:43:36,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:43:36,601 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:43:36,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 14:43:36,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:43:36,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:43:36,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:43:36,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:43:36,690 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:43:36,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:43:36,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144878016] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:43:36,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:43:36,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 14:43:36,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298068964] [2023-08-30 14:43:36,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:43:36,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:43:36,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:36,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:43:36,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 14:43:36,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 391 out of 913 [2023-08-30 14:43:36,723 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) [2023-08-30 14:43:36,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:36,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 391 of 913 [2023-08-30 14:43:36,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:43:42,137 INFO L130 PetriNetUnfolder]: 64646/89978 cut-off events. [2023-08-30 14:43:42,137 INFO L131 PetriNetUnfolder]: For 734/734 co-relation queries the response was YES. [2023-08-30 14:43:42,260 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. [2023-08-30 14:43:42,486 INFO L137 encePairwiseOnDemand]: 910/913 looper letters, 74 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2023-08-30 14:43:42,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 80 transitions, 438 flow [2023-08-30 14:43:42,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:43:42,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:43:42,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1234 transitions. [2023-08-30 14:43:42,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505293902884264 [2023-08-30 14:43:42,490 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1234 transitions. [2023-08-30 14:43:42,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1234 transitions. [2023-08-30 14:43:42,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:43:42,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1234 transitions. [2023-08-30 14:43:42,493 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) [2023-08-30 14:43:42,497 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) [2023-08-30 14:43:42,498 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) [2023-08-30 14:43:42,498 INFO L175 Difference]: Start difference. First operand has 69 places, 81 transitions, 288 flow. Second operand 3 states and 1234 transitions. [2023-08-30 14:43:42,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 80 transitions, 438 flow [2023-08-30 14:43:42,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 80 transitions, 437 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:43:42,500 INFO L231 Difference]: Finished difference. Result has 69 places, 80 transitions, 289 flow [2023-08-30 14:43:42,500 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} [2023-08-30 14:43:42,501 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-08-30 14:43:42,501 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 80 transitions, 289 flow [2023-08-30 14:43:42,501 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) [2023-08-30 14:43:42,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:43:42,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:43:42,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 14:43:42,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 14:43:42,706 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 14:43:42,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:43:42,709 INFO L85 PathProgramCache]: Analyzing trace with hash -466995559, now seen corresponding path program 1 times [2023-08-30 14:43:42,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:43:42,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607756051] [2023-08-30 14:43:42,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:42,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:43:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:42,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:43:42,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:43:42,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607756051] [2023-08-30 14:43:42,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607756051] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:43:42,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:43:42,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:43:42,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130320496] [2023-08-30 14:43:42,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:43:42,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:43:42,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:42,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:43:42,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:43:42,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 913 [2023-08-30 14:43:42,922 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) [2023-08-30 14:43:42,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:42,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 913 [2023-08-30 14:43:42,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:43:54,724 INFO L130 PetriNetUnfolder]: 134531/186536 cut-off events. [2023-08-30 14:43:54,724 INFO L131 PetriNetUnfolder]: For 1610/1610 co-relation queries the response was YES. [2023-08-30 14:43:55,016 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. [2023-08-30 14:43:55,471 INFO L137 encePairwiseOnDemand]: 905/913 looper letters, 189 selfloop transitions, 11 changer transitions 0/200 dead transitions. [2023-08-30 14:43:55,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 200 transitions, 1016 flow [2023-08-30 14:43:55,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:43:55,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:43:55,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2827 transitions. [2023-08-30 14:43:55,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423407917383821 [2023-08-30 14:43:55,476 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2827 transitions. [2023-08-30 14:43:55,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2827 transitions. [2023-08-30 14:43:55,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:43:55,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2827 transitions. [2023-08-30 14:43:55,482 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) [2023-08-30 14:43:55,487 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) [2023-08-30 14:43:55,488 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) [2023-08-30 14:43:55,488 INFO L175 Difference]: Start difference. First operand has 69 places, 80 transitions, 289 flow. Second operand 7 states and 2827 transitions. [2023-08-30 14:43:55,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 200 transitions, 1016 flow [2023-08-30 14:43:55,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 200 transitions, 1004 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:43:55,491 INFO L231 Difference]: Finished difference. Result has 78 places, 88 transitions, 379 flow [2023-08-30 14:43:55,491 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} [2023-08-30 14:43:55,492 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 6 predicate places. [2023-08-30 14:43:55,492 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 88 transitions, 379 flow [2023-08-30 14:43:55,493 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) [2023-08-30 14:43:55,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:43:55,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:43:55,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:43:55,493 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 14:43:55,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:43:55,493 INFO L85 PathProgramCache]: Analyzing trace with hash -466995632, now seen corresponding path program 1 times [2023-08-30 14:43:55,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:43:55,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754174165] [2023-08-30 14:43:55,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:55,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:43:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:55,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:43:55,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:43:55,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754174165] [2023-08-30 14:43:55,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754174165] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:43:55,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:43:55,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:43:55,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918001047] [2023-08-30 14:43:55,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:43:55,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:43:55,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:55,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:43:55,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:43:55,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 913 [2023-08-30 14:43:55,707 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) [2023-08-30 14:43:55,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:55,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 913 [2023-08-30 14:43:55,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:16,930 INFO L130 PetriNetUnfolder]: 236376/327537 cut-off events. [2023-08-30 14:44:16,931 INFO L131 PetriNetUnfolder]: For 26543/26543 co-relation queries the response was YES. [2023-08-30 14:44:17,655 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. [2023-08-30 14:44:18,505 INFO L137 encePairwiseOnDemand]: 907/913 looper letters, 134 selfloop transitions, 11 changer transitions 0/145 dead transitions. [2023-08-30 14:44:18,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 145 transitions, 822 flow [2023-08-30 14:44:18,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:44:18,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:44:18,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2011 transitions. [2023-08-30 14:44:18,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44052573932092004 [2023-08-30 14:44:18,508 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2011 transitions. [2023-08-30 14:44:18,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2011 transitions. [2023-08-30 14:44:18,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:18,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2011 transitions. [2023-08-30 14:44:18,512 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) [2023-08-30 14:44:18,515 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) [2023-08-30 14:44:18,516 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) [2023-08-30 14:44:18,516 INFO L175 Difference]: Start difference. First operand has 78 places, 88 transitions, 379 flow. Second operand 5 states and 2011 transitions. [2023-08-30 14:44:18,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 145 transitions, 822 flow [2023-08-30 14:44:18,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 145 transitions, 814 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-30 14:44:18,530 INFO L231 Difference]: Finished difference. Result has 84 places, 89 transitions, 417 flow [2023-08-30 14:44:18,530 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} [2023-08-30 14:44:18,531 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 12 predicate places. [2023-08-30 14:44:18,531 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 89 transitions, 417 flow [2023-08-30 14:44:18,532 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) [2023-08-30 14:44:18,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:18,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:44:18,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:44:18,532 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 14:44:18,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:18,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1646210741, now seen corresponding path program 1 times [2023-08-30 14:44:18,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:18,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105875402] [2023-08-30 14:44:18,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:18,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:18,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:44:18,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:18,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105875402] [2023-08-30 14:44:18,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105875402] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:44:18,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717008211] [2023-08-30 14:44:18,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:18,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:18,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:44:18,601 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:44:18,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 14:44:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:18,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:44:18,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:44:18,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:44:18,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:44:18,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717008211] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:44:18,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:44:18,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-30 14:44:18,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457020560] [2023-08-30 14:44:18,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:44:18,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:44:18,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:18,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:44:18,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:44:18,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 913 [2023-08-30 14:44:18,755 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) [2023-08-30 14:44:18,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:18,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 913 [2023-08-30 14:44:18,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:38,136 INFO L130 PetriNetUnfolder]: 210886/292897 cut-off events. [2023-08-30 14:44:38,137 INFO L131 PetriNetUnfolder]: For 41356/41356 co-relation queries the response was YES. [2023-08-30 14:44:38,889 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. [2023-08-30 14:44:39,654 INFO L137 encePairwiseOnDemand]: 910/913 looper letters, 85 selfloop transitions, 1 changer transitions 0/86 dead transitions. [2023-08-30 14:44:39,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 86 transitions, 573 flow [2023-08-30 14:44:39,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:44:39,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:44:39,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1242 transitions. [2023-08-30 14:44:39,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4534501642935378 [2023-08-30 14:44:39,661 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1242 transitions. [2023-08-30 14:44:39,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1242 transitions. [2023-08-30 14:44:39,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:39,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1242 transitions. [2023-08-30 14:44:39,663 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) [2023-08-30 14:44:39,665 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) [2023-08-30 14:44:39,666 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) [2023-08-30 14:44:39,666 INFO L175 Difference]: Start difference. First operand has 84 places, 89 transitions, 417 flow. Second operand 3 states and 1242 transitions. [2023-08-30 14:44:39,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 86 transitions, 573 flow [2023-08-30 14:44:39,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 86 transitions, 561 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 14:44:39,676 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 391 flow [2023-08-30 14:44:39,676 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} [2023-08-30 14:44:39,676 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 8 predicate places. [2023-08-30 14:44:39,676 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 391 flow [2023-08-30 14:44:39,677 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) [2023-08-30 14:44:39,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:39,677 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 14:44:39,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 14:44:39,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:39,881 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 14:44:39,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:39,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1648019062, now seen corresponding path program 1 times [2023-08-30 14:44:39,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:39,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657846729] [2023-08-30 14:44:39,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:39,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:39,930 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:44:39,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:39,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657846729] [2023-08-30 14:44:39,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657846729] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:44:39,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862455509] [2023-08-30 14:44:39,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:39,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:39,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:44:39,938 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:44:39,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 14:44:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:40,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 14:44:40,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:44:40,036 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:44:40,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:44:40,077 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:44:40,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862455509] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:44:40,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:44:40,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 14:44:40,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674174043] [2023-08-30 14:44:40,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:44:40,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:44:40,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:40,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:44:40,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 14:44:40,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 388 out of 913 [2023-08-30 14:44:40,203 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) [2023-08-30 14:44:40,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:40,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 388 of 913 [2023-08-30 14:44:40,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand