./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-array-int-trans.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-trans.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 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 --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 14:43:08,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:43:08,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:43:08,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:43:08,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:43:08,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:43:08,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:43:08,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:43:08,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:43:08,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:43:08,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:43:08,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:43:08,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:43:08,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:43:08,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:43:08,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:43:08,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:43:08,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:43:08,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:43:08,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:43:08,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:43:08,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:43:08,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:43:08,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:43:08,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:43:08,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:43:08,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:43:08,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:43:08,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:43:08,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:43:08,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:43:08,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:43:08,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:43:08,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:43:08,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:43:08,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:43:08,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:43:08,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:43:08,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:43:08,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:43:08,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:43:08,737 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:43:08,769 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:43:08,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:43:08,770 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:43:08,771 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:43:08,771 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:43:08,772 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:43:08,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:43:08,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:43:08,773 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:43:08,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:43:08,774 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:43:08,774 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:43:08,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:43:08,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:43:08,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:43:08,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:43:08,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:43:08,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:43:08,775 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:43:08,775 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:43:08,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:43:08,775 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:43:08,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:43:08,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:43:08,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:43:08,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:43:08,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:43:08,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:43:08,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:43:08,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:43:08,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:43:08,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:43:08,777 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:43:08,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:43:08,778 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:43:08,778 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:43:08,778 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:43:08,778 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:43:09,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:43:09,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:43:09,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:43:09,088 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:43:09,088 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:43:09,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c [2023-08-30 14:43:10,337 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:43:10,543 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:43:10,544 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c [2023-08-30 14:43:10,550 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd2d91881/b622ba4969ea4505bdbcd3337bb4858f/FLAG15f671377 [2023-08-30 14:43:10,561 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd2d91881/b622ba4969ea4505bdbcd3337bb4858f [2023-08-30 14:43:10,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:43:10,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:43:10,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:43:10,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:43:10,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:43:10,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:43:10" (1/1) ... [2023-08-30 14:43:10,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@184df6bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:10, skipping insertion in model container [2023-08-30 14:43:10,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:43:10" (1/1) ... [2023-08-30 14:43:10,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:43:10,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:43:10,746 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-trans.wvr.c[2728,2741] [2023-08-30 14:43:10,752 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:43:10,760 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:43:10,780 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-trans.wvr.c[2728,2741] [2023-08-30 14:43:10,784 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:43:10,796 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:43:10,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:10 WrapperNode [2023-08-30 14:43:10,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:43:10,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:43:10,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:43:10,798 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:43:10,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:10" (1/1) ... [2023-08-30 14:43:10,812 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:10" (1/1) ... [2023-08-30 14:43:10,846 INFO L138 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 13, calls inlined = 21, statements flattened = 343 [2023-08-30 14:43:10,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:43:10,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:43:10,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:43:10,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:43:10,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:10" (1/1) ... [2023-08-30 14:43:10,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:10" (1/1) ... [2023-08-30 14:43:10,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:10" (1/1) ... [2023-08-30 14:43:10,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:10" (1/1) ... [2023-08-30 14:43:10,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:10" (1/1) ... [2023-08-30 14:43:10,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:10" (1/1) ... [2023-08-30 14:43:10,884 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:10" (1/1) ... [2023-08-30 14:43:10,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:10" (1/1) ... [2023-08-30 14:43:10,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:43:10,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:43:10,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:43:10,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:43:10,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:10" (1/1) ... [2023-08-30 14:43:10,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:43:10,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:43:10,926 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 14:43:10,939 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 14:43:10,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:43:10,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:43:10,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:43:10,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:43:10,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 14:43:10,966 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 14:43:10,966 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 14:43:10,966 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 14:43:10,966 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 14:43:10,966 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 14:43:10,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:43:10,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 14:43:10,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:43:10,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:43:10,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:43:10,968 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 14:43:11,141 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:43:11,142 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:43:11,770 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:43:11,782 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:43:11,787 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 14:43:11,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:43:11 BoogieIcfgContainer [2023-08-30 14:43:11,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:43:11,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:43:11,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:43:11,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:43:11,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:43:10" (1/3) ... [2023-08-30 14:43:11,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300a3bf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:43:11, skipping insertion in model container [2023-08-30 14:43:11,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:10" (2/3) ... [2023-08-30 14:43:11,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300a3bf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:43:11, skipping insertion in model container [2023-08-30 14:43:11,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:43:11" (3/3) ... [2023-08-30 14:43:11,800 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2023-08-30 14:43:11,808 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:43:11,816 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:43:11,817 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-08-30 14:43:11,817 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:43:11,932 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:43:11,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 394 places, 418 transitions, 860 flow [2023-08-30 14:43:12,092 INFO L130 PetriNetUnfolder]: 34/415 cut-off events. [2023-08-30 14:43:12,093 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 14:43:12,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 415 events. 34/415 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1009 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 317. Up to 3 conditions per place. [2023-08-30 14:43:12,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 394 places, 418 transitions, 860 flow [2023-08-30 14:43:12,115 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 397 transitions, 809 flow [2023-08-30 14:43:12,122 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:43:12,134 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 374 places, 397 transitions, 809 flow [2023-08-30 14:43:12,141 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 374 places, 397 transitions, 809 flow [2023-08-30 14:43:12,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 397 transitions, 809 flow [2023-08-30 14:43:12,214 INFO L130 PetriNetUnfolder]: 33/397 cut-off events. [2023-08-30 14:43:12,214 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 14:43:12,219 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 955 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 14:43:12,234 INFO L119 LiptonReduction]: Number of co-enabled transitions 38184 [2023-08-30 14:43:28,229 INFO L134 LiptonReduction]: Checked pairs total: 51437 [2023-08-30 14:43:28,230 INFO L136 LiptonReduction]: Total number of compositions: 504 [2023-08-30 14:43:28,252 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:43:28,259 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;@52e5e9bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:43:28,260 INFO L358 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2023-08-30 14:43:28,265 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:43:28,266 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:43:28,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:43:28,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:43:28,268 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 14:43:28,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:43:28,273 INFO L85 PathProgramCache]: Analyzing trace with hash 55444, now seen corresponding path program 1 times [2023-08-30 14:43:28,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:43:28,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786846549] [2023-08-30 14:43:28,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:28,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:43:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:28,538 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 14:43:28,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:43:28,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786846549] [2023-08-30 14:43:28,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786846549] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:43:28,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:43:28,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:43:28,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617519516] [2023-08-30 14:43:28,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:43:28,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:43:28,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:28,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:43:28,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:43:28,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 922 [2023-08-30 14:43:28,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 383.6666666666667) internal successors, (1151), 3 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:28,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:28,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 922 [2023-08-30 14:43:28,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:43:32,440 INFO L130 PetriNetUnfolder]: 25859/35997 cut-off events. [2023-08-30 14:43:32,441 INFO L131 PetriNetUnfolder]: For 1328/1328 co-relation queries the response was YES. [2023-08-30 14:43:32,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73173 conditions, 35997 events. 25859/35997 cut-off events. For 1328/1328 co-relation queries the response was YES. Maximal size of possible extension queue 1572. Compared 214824 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 14:43:32,693 INFO L137 encePairwiseOnDemand]: 904/922 looper letters, 115 selfloop transitions, 6 changer transitions 0/121 dead transitions. [2023-08-30 14:43:32,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 121 transitions, 514 flow [2023-08-30 14:43:32,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:43:32,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:43:32,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1288 transitions. [2023-08-30 14:43:32,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656543745480839 [2023-08-30 14:43:32,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1288 transitions. [2023-08-30 14:43:32,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1288 transitions. [2023-08-30 14:43:32,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:43:32,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1288 transitions. [2023-08-30 14:43:32,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 429.3333333333333) internal successors, (1288), 3 states have internal predecessors, (1288), 0 states have call successors, (0), 0 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 14:43:32,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 922.0) internal successors, (3688), 4 states have internal predecessors, (3688), 0 states have call successors, (0), 0 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 14:43:32,742 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 922.0) internal successors, (3688), 4 states have internal predecessors, (3688), 0 states have call successors, (0), 0 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 14:43:32,744 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 155 flow. Second operand 3 states and 1288 transitions. [2023-08-30 14:43:32,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 121 transitions, 514 flow [2023-08-30 14:43:32,755 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 14:43:32,758 INFO L231 Difference]: Finished difference. Result has 65 places, 69 transitions, 190 flow [2023-08-30 14:43:32,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=922, 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 14:43:32,764 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -7 predicate places. [2023-08-30 14:43:32,765 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 69 transitions, 190 flow [2023-08-30 14:43:32,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 383.6666666666667) internal successors, (1151), 3 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:32,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:43:32,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:43:32,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:43:32,770 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 14:43:32,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:43:32,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1721417, now seen corresponding path program 1 times [2023-08-30 14:43:32,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:43:32,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516241467] [2023-08-30 14:43:32,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:32,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:43:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:32,881 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 14:43:32,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:43:32,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516241467] [2023-08-30 14:43:32,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516241467] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:43:32,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093135292] [2023-08-30 14:43:32,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:32,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:43:32,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:43:32,886 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 14:43:32,909 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 14:43:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:33,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:43:33,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:43:33,055 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 14:43:33,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:43:33,071 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 14:43:33,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093135292] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:43:33,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:43:33,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 14:43:33,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653207094] [2023-08-30 14:43:33,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:43:33,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:43:33,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:33,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:43:33,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:43:33,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 922 [2023-08-30 14:43:33,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 69 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 384.14285714285717) internal successors, (2689), 7 states have internal predecessors, (2689), 0 states have call successors, (0), 0 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 14:43:33,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:33,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 922 [2023-08-30 14:43:33,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:43:40,054 INFO L130 PetriNetUnfolder]: 64655/89991 cut-off events. [2023-08-30 14:43:40,054 INFO L131 PetriNetUnfolder]: For 740/740 co-relation queries the response was YES. [2023-08-30 14:43:40,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182074 conditions, 89991 events. 64655/89991 cut-off events. For 740/740 co-relation queries the response was YES. Maximal size of possible extension queue 3343. Compared 595520 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 14:43:40,509 INFO L137 encePairwiseOnDemand]: 910/922 looper letters, 268 selfloop transitions, 33 changer transitions 0/301 dead transitions. [2023-08-30 14:43:40,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 301 transitions, 1340 flow [2023-08-30 14:43:40,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:43:40,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:43:40,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2991 transitions. [2023-08-30 14:43:40,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634335295940502 [2023-08-30 14:43:40,521 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2991 transitions. [2023-08-30 14:43:40,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2991 transitions. [2023-08-30 14:43:40,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:43:40,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2991 transitions. [2023-08-30 14:43:40,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 427.2857142857143) internal successors, (2991), 7 states have internal predecessors, (2991), 0 states have call successors, (0), 0 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 14:43:40,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 922.0) internal successors, (7376), 8 states have internal predecessors, (7376), 0 states have call successors, (0), 0 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 14:43:40,543 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 922.0) internal successors, (7376), 8 states have internal predecessors, (7376), 0 states have call successors, (0), 0 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 14:43:40,543 INFO L175 Difference]: Start difference. First operand has 65 places, 69 transitions, 190 flow. Second operand 7 states and 2991 transitions. [2023-08-30 14:43:40,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 301 transitions, 1340 flow [2023-08-30 14:43:40,547 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 14:43:40,551 INFO L231 Difference]: Finished difference. Result has 72 places, 93 transitions, 397 flow [2023-08-30 14:43:40,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=922, 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 14:43:40,552 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2023-08-30 14:43:40,552 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 93 transitions, 397 flow [2023-08-30 14:43:40,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 384.14285714285717) internal successors, (2689), 7 states have internal predecessors, (2689), 0 states have call successors, (0), 0 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 14:43:40,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:43:40,555 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 14:43:40,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 14:43:40,761 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 14:43:40,761 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 14:43:40,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:43:40,762 INFO L85 PathProgramCache]: Analyzing trace with hash 53365524, now seen corresponding path program 1 times [2023-08-30 14:43:40,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:43:40,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376519805] [2023-08-30 14:43:40,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:40,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:43:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:40,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:43:40,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:43:40,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376519805] [2023-08-30 14:43:40,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376519805] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:43:40,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25820413] [2023-08-30 14:43:40,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:40,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:43:40,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:43:40,907 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:43:40,909 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 14:43:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:40,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:43:40,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:43:41,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:43:41,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:43:41,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25820413] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:43:41,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:43:41,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 14:43:41,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343493999] [2023-08-30 14:43:41,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:43:41,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:43:41,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:41,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:43:41,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:43:41,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 922 [2023-08-30 14:43:41,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 93 transitions, 397 flow. Second operand has 5 states, 5 states have (on average 383.8) internal successors, (1919), 5 states have internal predecessors, (1919), 0 states have call successors, (0), 0 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 14:43:41,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:41,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 922 [2023-08-30 14:43:41,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:43:47,572 INFO L130 PetriNetUnfolder]: 64646/89979 cut-off events. [2023-08-30 14:43:47,573 INFO L131 PetriNetUnfolder]: For 745/745 co-relation queries the response was YES. [2023-08-30 14:43:47,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182077 conditions, 89979 events. 64646/89979 cut-off events. For 745/745 co-relation queries the response was YES. Maximal size of possible extension queue 3225. Compared 593292 event pairs, 55565 based on Foata normal form. 2/36187 useless extension candidates. Maximal degree in co-relation 109218. Up to 53985 conditions per place. [2023-08-30 14:43:48,014 INFO L137 encePairwiseOnDemand]: 913/922 looper letters, 170 selfloop transitions, 15 changer transitions 0/185 dead transitions. [2023-08-30 14:43:48,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 185 transitions, 906 flow [2023-08-30 14:43:48,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:43:48,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:43:48,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2096 transitions. [2023-08-30 14:43:48,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4546637744034707 [2023-08-30 14:43:48,022 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2096 transitions. [2023-08-30 14:43:48,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2096 transitions. [2023-08-30 14:43:48,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:43:48,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2096 transitions. [2023-08-30 14:43:48,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 419.2) internal successors, (2096), 5 states have internal predecessors, (2096), 0 states have call successors, (0), 0 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 14:43:48,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 922.0) internal successors, (5532), 6 states have internal predecessors, (5532), 0 states have call successors, (0), 0 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 14:43:48,039 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 922.0) internal successors, (5532), 6 states have internal predecessors, (5532), 0 states have call successors, (0), 0 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 14:43:48,039 INFO L175 Difference]: Start difference. First operand has 72 places, 93 transitions, 397 flow. Second operand 5 states and 2096 transitions. [2023-08-30 14:43:48,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 185 transitions, 906 flow [2023-08-30 14:43:48,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 185 transitions, 876 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 14:43:48,047 INFO L231 Difference]: Finished difference. Result has 71 places, 81 transitions, 316 flow [2023-08-30 14:43:48,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=922, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=316, PETRI_PLACES=71, PETRI_TRANSITIONS=81} [2023-08-30 14:43:48,049 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -1 predicate places. [2023-08-30 14:43:48,049 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 81 transitions, 316 flow [2023-08-30 14:43:48,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 383.8) internal successors, (1919), 5 states have internal predecessors, (1919), 0 states have call successors, (0), 0 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 14:43:48,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:43:48,054 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 14:43:48,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 14:43:48,262 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,SelfDestructingSolverStorable2 [2023-08-30 14:43:48,263 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 14:43:48,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:43:48,263 INFO L85 PathProgramCache]: Analyzing trace with hash -255255115, now seen corresponding path program 2 times [2023-08-30 14:43:48,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:43:48,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095471111] [2023-08-30 14:43:48,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:48,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:43:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:48,375 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 14:43:48,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:43:48,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095471111] [2023-08-30 14:43:48,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095471111] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:43:48,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125020993] [2023-08-30 14:43:48,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:43:48,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:43:48,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:43:48,380 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 14:43:48,383 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 14:43:48,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:43:48,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:43:48,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:43:48,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:43:48,484 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 14:43:48,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:43:48,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125020993] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:43:48,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:43:48,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 14:43:48,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029602107] [2023-08-30 14:43:48,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:43:48,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:43:48,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:48,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:43:48,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 14:43:48,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 386 out of 922 [2023-08-30 14:43:48,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 81 transitions, 316 flow. Second operand has 3 states, 3 states have (on average 387.0) internal successors, (1161), 3 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:48,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:48,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 386 of 922 [2023-08-30 14:43:48,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:43:54,489 INFO L130 PetriNetUnfolder]: 64646/89978 cut-off events. [2023-08-30 14:43:54,490 INFO L131 PetriNetUnfolder]: For 755/755 co-relation queries the response was YES. [2023-08-30 14:43:54,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182069 conditions, 89978 events. 64646/89978 cut-off events. For 755/755 co-relation queries the response was YES. Maximal size of possible extension queue 3484. Compared 597623 event pairs, 55565 based on Foata normal form. 1/36189 useless extension candidates. Maximal degree in co-relation 145561. Up to 89973 conditions per place. [2023-08-30 14:43:54,955 INFO L137 encePairwiseOnDemand]: 919/922 looper letters, 74 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2023-08-30 14:43:54,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 80 transitions, 466 flow [2023-08-30 14:43:54,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:43:54,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:43:54,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1219 transitions. [2023-08-30 14:43:54,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44070860448300797 [2023-08-30 14:43:54,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1219 transitions. [2023-08-30 14:43:54,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1219 transitions. [2023-08-30 14:43:54,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:43:54,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1219 transitions. [2023-08-30 14:43:54,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 0 states have call successors, (0), 0 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 14:43:54,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 922.0) internal successors, (3688), 4 states have internal predecessors, (3688), 0 states have call successors, (0), 0 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 14:43:54,970 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 922.0) internal successors, (3688), 4 states have internal predecessors, (3688), 0 states have call successors, (0), 0 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 14:43:54,970 INFO L175 Difference]: Start difference. First operand has 71 places, 81 transitions, 316 flow. Second operand 3 states and 1219 transitions. [2023-08-30 14:43:54,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 80 transitions, 466 flow [2023-08-30 14:43:54,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 80 transitions, 445 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 14:43:54,973 INFO L231 Difference]: Finished difference. Result has 69 places, 80 transitions, 297 flow [2023-08-30 14:43:54,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=922, PETRI_DIFFERENCE_MINUEND_FLOW=285, 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=297, PETRI_PLACES=69, PETRI_TRANSITIONS=80} [2023-08-30 14:43:54,974 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-08-30 14:43:54,975 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 80 transitions, 297 flow [2023-08-30 14:43:54,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 387.0) internal successors, (1161), 3 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:43:54,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:43:54,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:43:54,983 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 14:43:55,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:43:55,181 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 14:43:55,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:43:55,181 INFO L85 PathProgramCache]: Analyzing trace with hash -173559524, now seen corresponding path program 1 times [2023-08-30 14:43:55,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:43:55,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709823100] [2023-08-30 14:43:55,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:43:55,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:43:55,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:43:55,318 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 14:43:55,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:43:55,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709823100] [2023-08-30 14:43:55,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709823100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:43:55,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:43:55,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:43:55,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916164232] [2023-08-30 14:43:55,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:43:55,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:43:55,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:55,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:43:55,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:43:55,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 377 out of 922 [2023-08-30 14:43:55,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 80 transitions, 297 flow. Second operand has 4 states, 4 states have (on average 378.5) internal successors, (1514), 4 states have internal predecessors, (1514), 0 states have call successors, (0), 0 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 14:43:55,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:55,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 377 of 922 [2023-08-30 14:43:55,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:07,748 INFO L130 PetriNetUnfolder]: 134531/186536 cut-off events. [2023-08-30 14:44:07,748 INFO L131 PetriNetUnfolder]: For 1651/1651 co-relation queries the response was YES. [2023-08-30 14:44:08,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377342 conditions, 186536 events. 134531/186536 cut-off events. For 1651/1651 co-relation queries the response was YES. Maximal size of possible extension queue 6908. Compared 1332699 event pairs, 112931 based on Foata normal form. 0/75638 useless extension candidates. Maximal degree in co-relation 239963. Up to 85707 conditions per place. [2023-08-30 14:44:08,633 INFO L137 encePairwiseOnDemand]: 915/922 looper letters, 194 selfloop transitions, 6 changer transitions 0/200 dead transitions. [2023-08-30 14:44:08,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 200 transitions, 1029 flow [2023-08-30 14:44:08,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:44:08,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:44:08,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2059 transitions. [2023-08-30 14:44:08,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4466377440347072 [2023-08-30 14:44:08,638 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2059 transitions. [2023-08-30 14:44:08,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2059 transitions. [2023-08-30 14:44:08,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:08,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2059 transitions. [2023-08-30 14:44:08,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 411.8) internal successors, (2059), 5 states have internal predecessors, (2059), 0 states have call successors, (0), 0 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 14:44:08,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 922.0) internal successors, (5532), 6 states have internal predecessors, (5532), 0 states have call successors, (0), 0 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 14:44:08,650 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 922.0) internal successors, (5532), 6 states have internal predecessors, (5532), 0 states have call successors, (0), 0 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 14:44:08,650 INFO L175 Difference]: Start difference. First operand has 69 places, 80 transitions, 297 flow. Second operand 5 states and 2059 transitions. [2023-08-30 14:44:08,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 200 transitions, 1029 flow [2023-08-30 14:44:08,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 200 transitions, 1017 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:44:08,653 INFO L231 Difference]: Finished difference. Result has 74 places, 83 transitions, 330 flow [2023-08-30 14:44:08,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=922, PETRI_DIFFERENCE_MINUEND_FLOW=285, 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=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=330, PETRI_PLACES=74, PETRI_TRANSITIONS=83} [2023-08-30 14:44:08,654 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 2 predicate places. [2023-08-30 14:44:08,654 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 83 transitions, 330 flow [2023-08-30 14:44:08,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 378.5) internal successors, (1514), 4 states have internal predecessors, (1514), 0 states have call successors, (0), 0 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 14:44:08,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:08,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:44:08,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:44:08,655 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 14:44:08,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:08,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1108307414, now seen corresponding path program 1 times [2023-08-30 14:44:08,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:08,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951650064] [2023-08-30 14:44:08,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:08,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:08,902 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 14:44:08,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:08,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951650064] [2023-08-30 14:44:08,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951650064] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:44:08,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783498001] [2023-08-30 14:44:08,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:08,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:08,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:44:08,905 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 14:44:08,926 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 14:44:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:09,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:44:09,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:44:09,047 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 14:44:09,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:44:09,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783498001] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:44:09,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:44:09,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-30 14:44:09,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581191744] [2023-08-30 14:44:09,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:44:09,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:44:09,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:09,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:44:09,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:44:09,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 922 [2023-08-30 14:44:09,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 83 transitions, 330 flow. Second operand has 3 states, 3 states have (on average 391.3333333333333) internal successors, (1174), 3 states have internal predecessors, (1174), 0 states have call successors, (0), 0 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 14:44:09,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:09,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 922 [2023-08-30 14:44:09,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:21,200 INFO L130 PetriNetUnfolder]: 127729/177706 cut-off events. [2023-08-30 14:44:21,200 INFO L131 PetriNetUnfolder]: For 13793/13793 co-relation queries the response was YES. [2023-08-30 14:44:21,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362895 conditions, 177706 events. 127729/177706 cut-off events. For 13793/13793 co-relation queries the response was YES. Maximal size of possible extension queue 6725. Compared 1275561 event pairs, 109051 based on Foata normal form. 3718/78886 useless extension candidates. Maximal degree in co-relation 230334. Up to 177706 conditions per place. [2023-08-30 14:44:22,023 INFO L137 encePairwiseOnDemand]: 920/922 looper letters, 80 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2023-08-30 14:44:22,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 81 transitions, 482 flow [2023-08-30 14:44:22,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:44:22,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:44:22,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1227 transitions. [2023-08-30 14:44:22,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4436008676789588 [2023-08-30 14:44:22,027 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1227 transitions. [2023-08-30 14:44:22,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1227 transitions. [2023-08-30 14:44:22,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:22,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1227 transitions. [2023-08-30 14:44:22,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 409.0) internal successors, (1227), 3 states have internal predecessors, (1227), 0 states have call successors, (0), 0 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 14:44:22,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 922.0) internal successors, (3688), 4 states have internal predecessors, (3688), 0 states have call successors, (0), 0 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 14:44:22,034 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 922.0) internal successors, (3688), 4 states have internal predecessors, (3688), 0 states have call successors, (0), 0 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 14:44:22,035 INFO L175 Difference]: Start difference. First operand has 74 places, 83 transitions, 330 flow. Second operand 3 states and 1227 transitions. [2023-08-30 14:44:22,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 81 transitions, 482 flow [2023-08-30 14:44:22,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 81 transitions, 474 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 14:44:22,041 INFO L231 Difference]: Finished difference. Result has 73 places, 81 transitions, 314 flow [2023-08-30 14:44:22,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=922, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=71, 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=314, PETRI_PLACES=73, PETRI_TRANSITIONS=81} [2023-08-30 14:44:22,042 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 1 predicate places. [2023-08-30 14:44:22,042 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 81 transitions, 314 flow [2023-08-30 14:44:22,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 391.3333333333333) internal successors, (1174), 3 states have internal predecessors, (1174), 0 states have call successors, (0), 0 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 14:44:22,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:22,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:44:22,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 14:44:22,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:22,249 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 14:44:22,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:22,249 INFO L85 PathProgramCache]: Analyzing trace with hash 758723248, now seen corresponding path program 1 times [2023-08-30 14:44:22,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:22,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020984783] [2023-08-30 14:44:22,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:22,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:22,324 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 14:44:22,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:22,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020984783] [2023-08-30 14:44:22,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020984783] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:44:22,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771591325] [2023-08-30 14:44:22,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:22,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:22,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:44:22,326 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:44:22,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 14:44:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:22,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:44:22,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:44:22,471 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 14:44:22,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:44:22,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771591325] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:44:22,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:44:22,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 14:44:22,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783203661] [2023-08-30 14:44:22,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:44:22,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:44:22,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:22,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:44:22,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:44:22,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 922 [2023-08-30 14:44:22,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 81 transitions, 314 flow. Second operand has 4 states, 4 states have (on average 388.75) internal successors, (1555), 4 states have internal predecessors, (1555), 0 states have call successors, (0), 0 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 14:44:22,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:22,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 922 [2023-08-30 14:44:22,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:32,957 INFO L130 PetriNetUnfolder]: 112997/157258 cut-off events. [2023-08-30 14:44:32,958 INFO L131 PetriNetUnfolder]: For 6140/6140 co-relation queries the response was YES. [2023-08-30 14:44:33,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318471 conditions, 157258 events. 112997/157258 cut-off events. For 6140/6140 co-relation queries the response was YES. Maximal size of possible extension queue 5942. Compared 1113517 event pairs, 95887 based on Foata normal form. 1550/68080 useless extension candidates. Maximal degree in co-relation 318456. Up to 157252 conditions per place. [2023-08-30 14:44:33,666 INFO L137 encePairwiseOnDemand]: 918/922 looper letters, 73 selfloop transitions, 6 changer transitions 0/79 dead transitions. [2023-08-30 14:44:33,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 79 transitions, 464 flow [2023-08-30 14:44:33,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:44:33,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:44:33,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1607 transitions. [2023-08-30 14:44:33,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43573752711496744 [2023-08-30 14:44:33,670 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1607 transitions. [2023-08-30 14:44:33,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1607 transitions. [2023-08-30 14:44:33,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:33,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1607 transitions. [2023-08-30 14:44:33,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 401.75) internal successors, (1607), 4 states have internal predecessors, (1607), 0 states have call successors, (0), 0 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 14:44:33,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 922.0) internal successors, (4610), 5 states have internal predecessors, (4610), 0 states have call successors, (0), 0 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 14:44:33,679 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 922.0) internal successors, (4610), 5 states have internal predecessors, (4610), 0 states have call successors, (0), 0 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 14:44:33,679 INFO L175 Difference]: Start difference. First operand has 73 places, 81 transitions, 314 flow. Second operand 4 states and 1607 transitions. [2023-08-30 14:44:33,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 79 transitions, 464 flow [2023-08-30 14:44:33,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 79 transitions, 461 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:44:33,682 INFO L231 Difference]: Finished difference. Result has 72 places, 79 transitions, 315 flow [2023-08-30 14:44:33,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=922, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=315, PETRI_PLACES=72, PETRI_TRANSITIONS=79} [2023-08-30 14:44:33,683 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2023-08-30 14:44:33,683 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 79 transitions, 315 flow [2023-08-30 14:44:33,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 388.75) internal successors, (1555), 4 states have internal predecessors, (1555), 0 states have call successors, (0), 0 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 14:44:33,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:33,684 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 14:44:33,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 14:44:33,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:33,889 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 14:44:33,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:33,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1109071732, now seen corresponding path program 1 times [2023-08-30 14:44:33,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:33,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431049960] [2023-08-30 14:44:33,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:33,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:33,983 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 14:44:33,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:33,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431049960] [2023-08-30 14:44:33,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431049960] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:44:33,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104963604] [2023-08-30 14:44:33,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:33,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:33,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:44:33,985 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:44:34,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 14:44:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:34,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 14:44:34,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:44:34,101 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 14:44:34,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:44:34,146 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 14:44:34,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104963604] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:44:34,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:44:34,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 14:44:34,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920229439] [2023-08-30 14:44:34,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:44:34,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:44:34,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:34,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:44:34,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 14:44:34,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 922 [2023-08-30 14:44:34,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 79 transitions, 315 flow. Second operand has 13 states, 13 states have (on average 384.15384615384613) internal successors, (4994), 13 states have internal predecessors, (4994), 0 states have call successors, (0), 0 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 14:44:34,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:34,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 922 [2023-08-30 14:44:34,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:57,493 INFO L130 PetriNetUnfolder]: 236267/328810 cut-off events. [2023-08-30 14:44:57,494 INFO L131 PetriNetUnfolder]: For 3188/3188 co-relation queries the response was YES. [2023-08-30 14:44:58,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 665852 conditions, 328810 events. 236267/328810 cut-off events. For 3188/3188 co-relation queries the response was YES. Maximal size of possible extension queue 8292. Compared 2434858 event pairs, 200491 based on Foata normal form. 24/139130 useless extension candidates. Maximal degree in co-relation 665837. Up to 42910 conditions per place. [2023-08-30 14:44:59,229 INFO L137 encePairwiseOnDemand]: 914/922 looper letters, 546 selfloop transitions, 53 changer transitions 0/599 dead transitions. [2023-08-30 14:44:59,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 599 transitions, 2745 flow [2023-08-30 14:44:59,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:44:59,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:44:59,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 5205 transitions. [2023-08-30 14:44:59,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47044468546637747 [2023-08-30 14:44:59,240 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 5205 transitions. [2023-08-30 14:44:59,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 5205 transitions. [2023-08-30 14:44:59,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:59,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 5205 transitions. [2023-08-30 14:44:59,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 433.75) internal successors, (5205), 12 states have internal predecessors, (5205), 0 states have call successors, (0), 0 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 14:44:59,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 922.0) internal successors, (11986), 13 states have internal predecessors, (11986), 0 states have call successors, (0), 0 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 14:44:59,265 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 922.0) internal successors, (11986), 13 states have internal predecessors, (11986), 0 states have call successors, (0), 0 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 14:44:59,265 INFO L175 Difference]: Start difference. First operand has 72 places, 79 transitions, 315 flow. Second operand 12 states and 5205 transitions. [2023-08-30 14:44:59,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 599 transitions, 2745 flow [2023-08-30 14:44:59,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 599 transitions, 2732 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:44:59,273 INFO L231 Difference]: Finished difference. Result has 87 places, 109 transitions, 678 flow [2023-08-30 14:44:59,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=922, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=678, PETRI_PLACES=87, PETRI_TRANSITIONS=109} [2023-08-30 14:44:59,274 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 15 predicate places. [2023-08-30 14:44:59,274 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 109 transitions, 678 flow [2023-08-30 14:44:59,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 384.15384615384613) internal successors, (4994), 13 states have internal predecessors, (4994), 0 states have call successors, (0), 0 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 14:44:59,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:59,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:44:59,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 14:44:59,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:59,481 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 14:44:59,481 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:59,481 INFO L85 PathProgramCache]: Analyzing trace with hash 713143274, now seen corresponding path program 1 times [2023-08-30 14:44:59,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:59,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291898953] [2023-08-30 14:44:59,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:59,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:59,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:44:59,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:59,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291898953] [2023-08-30 14:44:59,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291898953] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:44:59,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:44:59,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:44:59,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190409770] [2023-08-30 14:44:59,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:44:59,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:44:59,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:59,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:44:59,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:44:59,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 374 out of 922 [2023-08-30 14:44:59,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 109 transitions, 678 flow. Second operand has 5 states, 5 states have (on average 375.6) internal successors, (1878), 5 states have internal predecessors, (1878), 0 states have call successors, (0), 0 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 14:44:59,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:59,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 374 of 922 [2023-08-30 14:44:59,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand