./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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-nzb-file-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 57b20b3268fa30a07af1365aac59c96531ad2ebea6861c18a1d5dfea8339adbb --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:02:20,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:02:20,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:02:20,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:02:20,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:02:20,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:02:20,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:02:20,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:02:20,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:02:20,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:02:20,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:02:20,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:02:20,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:02:20,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:02:20,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:02:20,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:02:20,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:02:20,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:02:20,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:02:20,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:02:20,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:02:20,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:02:20,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:02:20,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:02:20,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:02:20,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:02:20,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:02:20,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:02:20,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:02:20,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:02:20,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:02:20,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:02:20,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:02:20,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:02:20,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:02:20,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:02:20,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:02:20,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:02:20,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:02:20,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:02:20,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:02:20,966 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:02:21,001 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:02:21,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:02:21,002 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:02:21,002 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:02:21,003 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:02:21,003 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:02:21,004 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:02:21,004 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:02:21,004 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:02:21,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:02:21,005 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:02:21,006 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:02:21,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:02:21,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:02:21,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:02:21,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:02:21,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:02:21,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:02:21,007 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:02:21,007 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:02:21,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:02:21,008 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:02:21,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:02:21,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:02:21,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:02:21,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:02:21,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:02:21,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:02:21,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:02:21,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:02:21,009 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:02:21,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:02:21,010 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:02:21,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:02:21,010 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:02:21,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:02:21,011 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:02:21,011 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b20b3268fa30a07af1365aac59c96531ad2ebea6861c18a1d5dfea8339adbb Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:02:21,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:02:21,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:02:21,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:02:21,364 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:02:21,364 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:02:21,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c [2023-08-30 11:02:22,432 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:02:22,688 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:02:22,696 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c [2023-08-30 11:02:22,711 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03b909761/617ade4b73ed4b69a8c389e2e5468802/FLAGeabde461d [2023-08-30 11:02:22,725 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03b909761/617ade4b73ed4b69a8c389e2e5468802 [2023-08-30 11:02:22,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:02:22,729 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:02:22,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:02:22,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:02:22,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:02:22,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:02:22" (1/1) ... [2023-08-30 11:02:22,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e4b3368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:02:22, skipping insertion in model container [2023-08-30 11:02:22,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:02:22" (1/1) ... [2023-08-30 11:02:22,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:02:22,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:02:22,951 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-nzb-file-subst.wvr.c[6501,6514] [2023-08-30 11:02:22,971 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:02:22,984 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:02:23,031 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-nzb-file-subst.wvr.c[6501,6514] [2023-08-30 11:02:23,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:02:23,046 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:02:23,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:02:23 WrapperNode [2023-08-30 11:02:23,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:02:23,048 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:02:23,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:02:23,048 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:02:23,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:02:23" (1/1) ... [2023-08-30 11:02:23,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:02:23" (1/1) ... [2023-08-30 11:02:23,145 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 733 [2023-08-30 11:02:23,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:02:23,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:02:23,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:02:23,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:02:23,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:02:23" (1/1) ... [2023-08-30 11:02:23,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:02:23" (1/1) ... [2023-08-30 11:02:23,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:02:23" (1/1) ... [2023-08-30 11:02:23,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:02:23" (1/1) ... [2023-08-30 11:02:23,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:02:23" (1/1) ... [2023-08-30 11:02:23,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:02:23" (1/1) ... [2023-08-30 11:02:23,244 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:02:23" (1/1) ... [2023-08-30 11:02:23,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:02:23" (1/1) ... [2023-08-30 11:02:23,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:02:23,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:02:23,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:02:23,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:02:23,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:02:23" (1/1) ... [2023-08-30 11:02:23,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:02:23,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:02:23,294 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 11:02:23,313 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 11:02:23,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:02:23,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:02:23,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:02:23,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:02:23,325 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:02:23,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:02:23,326 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:02:23,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:02:23,326 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:02:23,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:02:23,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:02:23,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:02:23,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:02:23,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:02:23,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:02:23,329 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 11:02:23,463 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:02:23,478 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:02:24,351 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:02:24,362 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:02:24,362 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 11:02:24,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:02:24 BoogieIcfgContainer [2023-08-30 11:02:24,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:02:24,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:02:24,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:02:24,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:02:24,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:02:22" (1/3) ... [2023-08-30 11:02:24,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f360002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:02:24, skipping insertion in model container [2023-08-30 11:02:24,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:02:23" (2/3) ... [2023-08-30 11:02:24,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f360002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:02:24, skipping insertion in model container [2023-08-30 11:02:24,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:02:24" (3/3) ... [2023-08-30 11:02:24,373 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2023-08-30 11:02:24,380 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:02:24,388 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:02:24,388 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2023-08-30 11:02:24,389 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:02:24,562 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 11:02:24,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 844 places, 925 transitions, 1874 flow [2023-08-30 11:02:25,014 INFO L130 PetriNetUnfolder]: 91/922 cut-off events. [2023-08-30 11:02:25,015 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:02:25,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 935 conditions, 922 events. 91/922 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3780 event pairs, 0 based on Foata normal form. 0/771 useless extension candidates. Maximal degree in co-relation 685. Up to 2 conditions per place. [2023-08-30 11:02:25,043 INFO L82 GeneralOperation]: Start removeDead. Operand has 844 places, 925 transitions, 1874 flow [2023-08-30 11:02:25,068 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 824 places, 904 transitions, 1823 flow [2023-08-30 11:02:25,072 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:02:25,083 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 824 places, 904 transitions, 1823 flow [2023-08-30 11:02:25,089 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 824 places, 904 transitions, 1823 flow [2023-08-30 11:02:25,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 824 places, 904 transitions, 1823 flow [2023-08-30 11:02:25,372 INFO L130 PetriNetUnfolder]: 90/904 cut-off events. [2023-08-30 11:02:25,372 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:02:25,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 916 conditions, 904 events. 90/904 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3717 event pairs, 0 based on Foata normal form. 0/754 useless extension candidates. Maximal degree in co-relation 685. Up to 2 conditions per place. [2023-08-30 11:02:25,503 INFO L119 LiptonReduction]: Number of co-enabled transitions 311688 [2023-08-30 11:03:17,693 INFO L134 LiptonReduction]: Checked pairs total: 311968 [2023-08-30 11:03:17,693 INFO L136 LiptonReduction]: Total number of compositions: 1227 [2023-08-30 11:03:17,707 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:03:17,713 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;@1a5ca7d0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:03:17,713 INFO L358 AbstractCegarLoop]: Starting to check reachability of 117 error locations. [2023-08-30 11:03:17,716 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:03:17,716 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:03:17,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:03:17,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:03:17,717 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2023-08-30 11:03:17,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:03:17,722 INFO L85 PathProgramCache]: Analyzing trace with hash 132549, now seen corresponding path program 1 times [2023-08-30 11:03:17,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:03:17,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249134349] [2023-08-30 11:03:17,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:03:17,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:03:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:03:18,032 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 11:03:18,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:03:18,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249134349] [2023-08-30 11:03:18,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249134349] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:03:18,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:03:18,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:03:18,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329658126] [2023-08-30 11:03:18,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:03:18,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:03:18,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:03:18,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:03:18,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:03:18,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 872 out of 2152 [2023-08-30 11:03:18,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 108 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 872.6666666666666) internal successors, (2618), 3 states have internal predecessors, (2618), 0 states have call successors, (0), 0 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 11:03:18,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:03:18,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 872 of 2152 [2023-08-30 11:03:18,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:03:34,145 INFO L130 PetriNetUnfolder]: 103151/140665 cut-off events. [2023-08-30 11:03:34,146 INFO L131 PetriNetUnfolder]: For 2916/2916 co-relation queries the response was YES. [2023-08-30 11:03:34,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284539 conditions, 140665 events. 103151/140665 cut-off events. For 2916/2916 co-relation queries the response was YES. Maximal size of possible extension queue 4044. Compared 913501 event pairs, 86146 based on Foata normal form. 0/54153 useless extension candidates. Maximal degree in co-relation 137482. Up to 70337 conditions per place. [2023-08-30 11:03:34,879 INFO L137 encePairwiseOnDemand]: 2125/2152 looper letters, 173 selfloop transitions, 6 changer transitions 0/179 dead transitions. [2023-08-30 11:03:34,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 179 transitions, 746 flow [2023-08-30 11:03:34,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:03:34,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:03:34,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2831 transitions. [2023-08-30 11:03:34,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4385068153655514 [2023-08-30 11:03:34,905 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2831 transitions. [2023-08-30 11:03:34,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2831 transitions. [2023-08-30 11:03:34,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:03:34,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2831 transitions. [2023-08-30 11:03:34,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 943.6666666666666) internal successors, (2831), 3 states have internal predecessors, (2831), 0 states have call successors, (0), 0 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 11:03:34,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2152.0) internal successors, (8608), 4 states have internal predecessors, (8608), 0 states have call successors, (0), 0 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 11:03:34,943 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2152.0) internal successors, (8608), 4 states have internal predecessors, (8608), 0 states have call successors, (0), 0 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 11:03:34,945 INFO L175 Difference]: Start difference. First operand has 105 places, 108 transitions, 231 flow. Second operand 3 states and 2831 transitions. [2023-08-30 11:03:34,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 179 transitions, 746 flow [2023-08-30 11:03:35,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 179 transitions, 728 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 11:03:35,196 INFO L231 Difference]: Finished difference. Result has 89 places, 98 transitions, 248 flow [2023-08-30 11:03:35,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2152, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=89, PETRI_TRANSITIONS=98} [2023-08-30 11:03:35,201 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, -16 predicate places. [2023-08-30 11:03:35,201 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 98 transitions, 248 flow [2023-08-30 11:03:35,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 872.6666666666666) internal successors, (2618), 3 states have internal predecessors, (2618), 0 states have call successors, (0), 0 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 11:03:35,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:03:35,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:03:35,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:03:35,204 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2023-08-30 11:03:35,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:03:35,205 INFO L85 PathProgramCache]: Analyzing trace with hash 4115225, now seen corresponding path program 1 times [2023-08-30 11:03:35,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:03:35,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322148795] [2023-08-30 11:03:35,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:03:35,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:03:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:03:35,290 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 11:03:35,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:03:35,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322148795] [2023-08-30 11:03:35,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322148795] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:03:35,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715943303] [2023-08-30 11:03:35,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:03:35,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:03:35,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:03:35,295 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 11:03:35,313 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 11:03:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:03:35,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:03:35,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:03:35,476 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 11:03:35,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:03:35,489 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 11:03:35,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715943303] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:03:35,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:03:35,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:03:35,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038627322] [2023-08-30 11:03:35,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:03:35,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:03:35,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:03:35,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:03:35,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:03:35,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 872 out of 2152 [2023-08-30 11:03:35,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 98 transitions, 248 flow. Second operand has 7 states, 7 states have (on average 873.1428571428571) internal successors, (6112), 7 states have internal predecessors, (6112), 0 states have call successors, (0), 0 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 11:03:35,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:03:35,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 872 of 2152 [2023-08-30 11:03:35,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:04:13,113 INFO L130 PetriNetUnfolder]: 257885/351661 cut-off events. [2023-08-30 11:04:13,114 INFO L131 PetriNetUnfolder]: For 1260/1260 co-relation queries the response was YES. [2023-08-30 11:04:13,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 709509 conditions, 351661 events. 257885/351661 cut-off events. For 1260/1260 co-relation queries the response was YES. Maximal size of possible extension queue 9153. Compared 2502878 event pairs, 215365 based on Foata normal form. 0/135396 useless extension candidates. Maximal degree in co-relation 567523. Up to 70335 conditions per place. [2023-08-30 11:04:14,519 INFO L137 encePairwiseOnDemand]: 2140/2152 looper letters, 413 selfloop transitions, 33 changer transitions 0/446 dead transitions. [2023-08-30 11:04:14,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 446 transitions, 1920 flow [2023-08-30 11:04:14,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:04:14,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:04:14,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6559 transitions. [2023-08-30 11:04:14,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4354089219330855 [2023-08-30 11:04:14,539 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6559 transitions. [2023-08-30 11:04:14,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6559 transitions. [2023-08-30 11:04:14,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:04:14,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6559 transitions. [2023-08-30 11:04:14,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 937.0) internal successors, (6559), 7 states have internal predecessors, (6559), 0 states have call successors, (0), 0 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 11:04:14,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 2152.0) internal successors, (17216), 8 states have internal predecessors, (17216), 0 states have call successors, (0), 0 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 11:04:14,585 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 2152.0) internal successors, (17216), 8 states have internal predecessors, (17216), 0 states have call successors, (0), 0 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 11:04:14,586 INFO L175 Difference]: Start difference. First operand has 89 places, 98 transitions, 248 flow. Second operand 7 states and 6559 transitions. [2023-08-30 11:04:14,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 446 transitions, 1920 flow [2023-08-30 11:04:14,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 446 transitions, 1896 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:04:14,595 INFO L231 Difference]: Finished difference. Result has 96 places, 122 transitions, 455 flow [2023-08-30 11:04:14,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2152, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=455, PETRI_PLACES=96, PETRI_TRANSITIONS=122} [2023-08-30 11:04:14,596 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, -9 predicate places. [2023-08-30 11:04:14,597 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 122 transitions, 455 flow [2023-08-30 11:04:14,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 873.1428571428571) internal successors, (6112), 7 states have internal predecessors, (6112), 0 states have call successors, (0), 0 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 11:04:14,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:04:14,599 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 11:04:14,613 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 11:04:14,805 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 11:04:14,806 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2023-08-30 11:04:14,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:04:14,806 INFO L85 PathProgramCache]: Analyzing trace with hash 127575781, now seen corresponding path program 1 times [2023-08-30 11:04:14,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:04:14,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302053065] [2023-08-30 11:04:14,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:14,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:04:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:14,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:04:14,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:04:14,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302053065] [2023-08-30 11:04:14,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302053065] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:04:14,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:04:14,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:04:14,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629222886] [2023-08-30 11:04:14,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:04:14,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:04:14,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:04:14,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:04:14,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:04:14,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 872 out of 2152 [2023-08-30 11:04:14,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 122 transitions, 455 flow. Second operand has 3 states, 3 states have (on average 873.3333333333334) internal successors, (2620), 3 states have internal predecessors, (2620), 0 states have call successors, (0), 0 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 11:04:14,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:04:14,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 872 of 2152 [2023-08-30 11:04:14,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:04:50,218 INFO L130 PetriNetUnfolder]: 257876/351649 cut-off events. [2023-08-30 11:04:50,219 INFO L131 PetriNetUnfolder]: For 1265/1265 co-relation queries the response was YES. [2023-08-30 11:04:50,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 709512 conditions, 351649 events. 257876/351649 cut-off events. For 1265/1265 co-relation queries the response was YES. Maximal size of possible extension queue 9591. Compared 2519028 event pairs, 215365 based on Foata normal form. 2/135397 useless extension candidates. Maximal degree in co-relation 425679. Up to 351649 conditions per place. [2023-08-30 11:04:51,855 INFO L137 encePairwiseOnDemand]: 2148/2152 looper letters, 109 selfloop transitions, 1 changer transitions 0/110 dead transitions. [2023-08-30 11:04:51,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 110 transitions, 594 flow [2023-08-30 11:04:51,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:04:51,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:04:51,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2709 transitions. [2023-08-30 11:04:51,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41960966542750927 [2023-08-30 11:04:51,863 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2709 transitions. [2023-08-30 11:04:51,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2709 transitions. [2023-08-30 11:04:51,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:04:51,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2709 transitions. [2023-08-30 11:04:51,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 903.0) internal successors, (2709), 3 states have internal predecessors, (2709), 0 states have call successors, (0), 0 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 11:04:51,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2152.0) internal successors, (8608), 4 states have internal predecessors, (8608), 0 states have call successors, (0), 0 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 11:04:51,879 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2152.0) internal successors, (8608), 4 states have internal predecessors, (8608), 0 states have call successors, (0), 0 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 11:04:51,879 INFO L175 Difference]: Start difference. First operand has 96 places, 122 transitions, 455 flow. Second operand 3 states and 2709 transitions. [2023-08-30 11:04:51,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 110 transitions, 594 flow [2023-08-30 11:04:51,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 110 transitions, 564 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 11:04:51,883 INFO L231 Difference]: Finished difference. Result has 93 places, 110 transitions, 346 flow [2023-08-30 11:04:51,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2152, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=93, PETRI_TRANSITIONS=110} [2023-08-30 11:04:51,884 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, -12 predicate places. [2023-08-30 11:04:51,884 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 110 transitions, 346 flow [2023-08-30 11:04:51,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 873.3333333333334) internal successors, (2620), 3 states have internal predecessors, (2620), 0 states have call successors, (0), 0 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 11:04:51,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:04:51,885 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:04:51,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 11:04:51,886 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2023-08-30 11:04:51,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:04:51,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1953529776, now seen corresponding path program 2 times [2023-08-30 11:04:51,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:04:51,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831212476] [2023-08-30 11:04:51,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:04:51,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:04:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:04:51,994 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 11:04:51,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:04:51,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831212476] [2023-08-30 11:04:51,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831212476] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:04:51,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2799942] [2023-08-30 11:04:51,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:04:51,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:04:51,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:04:52,000 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 11:04:52,003 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 11:04:52,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:04:52,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:04:52,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:04:52,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:04:52,185 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 11:04:52,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:04:52,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2799942] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:04:52,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:04:52,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:04:52,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761036637] [2023-08-30 11:04:52,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:04:52,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:04:52,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:04:52,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:04:52,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:04:52,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 875 out of 2152 [2023-08-30 11:04:52,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 110 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 876.0) internal successors, (2628), 3 states have internal predecessors, (2628), 0 states have call successors, (0), 0 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 11:04:52,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:04:52,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 875 of 2152 [2023-08-30 11:04:52,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:05:26,998 INFO L130 PetriNetUnfolder]: 257876/351646 cut-off events. [2023-08-30 11:05:26,999 INFO L131 PetriNetUnfolder]: For 1269/1269 co-relation queries the response was YES. [2023-08-30 11:05:27,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 709478 conditions, 351646 events. 257876/351646 cut-off events. For 1269/1269 co-relation queries the response was YES. Maximal size of possible extension queue 9591. Compared 2519523 event pairs, 215365 based on Foata normal form. 3/135397 useless extension candidates. Maximal degree in co-relation 709466. Up to 351646 conditions per place. [2023-08-30 11:05:28,483 INFO L137 encePairwiseOnDemand]: 2148/2152 looper letters, 106 selfloop transitions, 1 changer transitions 0/107 dead transitions. [2023-08-30 11:05:28,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 107 transitions, 530 flow [2023-08-30 11:05:28,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:05:28,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:05:28,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2715 transitions. [2023-08-30 11:05:28,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4205390334572491 [2023-08-30 11:05:28,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2715 transitions. [2023-08-30 11:05:28,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2715 transitions. [2023-08-30 11:05:28,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:05:28,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2715 transitions. [2023-08-30 11:05:28,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 905.0) internal successors, (2715), 3 states have internal predecessors, (2715), 0 states have call successors, (0), 0 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 11:05:28,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2152.0) internal successors, (8608), 4 states have internal predecessors, (8608), 0 states have call successors, (0), 0 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 11:05:28,504 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2152.0) internal successors, (8608), 4 states have internal predecessors, (8608), 0 states have call successors, (0), 0 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 11:05:28,504 INFO L175 Difference]: Start difference. First operand has 93 places, 110 transitions, 346 flow. Second operand 3 states and 2715 transitions. [2023-08-30 11:05:28,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 107 transitions, 530 flow [2023-08-30 11:05:28,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 107 transitions, 487 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-30 11:05:28,507 INFO L231 Difference]: Finished difference. Result has 87 places, 107 transitions, 275 flow [2023-08-30 11:05:28,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2152, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=87, PETRI_TRANSITIONS=107} [2023-08-30 11:05:28,508 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, -18 predicate places. [2023-08-30 11:05:28,508 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 107 transitions, 275 flow [2023-08-30 11:05:28,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 876.0) internal successors, (2628), 3 states have internal predecessors, (2628), 0 states have call successors, (0), 0 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 11:05:28,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:05:28,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:05:28,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 11:05:28,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 11:05:28,720 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2023-08-30 11:05:28,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:05:28,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1748756574, now seen corresponding path program 1 times [2023-08-30 11:05:28,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:05:28,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97526951] [2023-08-30 11:05:28,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:05:28,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:05:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:05:28,818 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 11:05:28,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:05:28,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97526951] [2023-08-30 11:05:28,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97526951] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:05:28,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:05:28,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:05:28,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696576851] [2023-08-30 11:05:28,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:05:28,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:05:28,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:05:28,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:05:28,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:05:28,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 869 out of 2152 [2023-08-30 11:05:28,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 107 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 871.0) internal successors, (2613), 3 states have internal predecessors, (2613), 0 states have call successors, (0), 0 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 11:05:28,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:05:28,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 869 of 2152 [2023-08-30 11:05:28,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:05:55,781 INFO L130 PetriNetUnfolder]: 206301/281320 cut-off events. [2023-08-30 11:05:55,783 INFO L131 PetriNetUnfolder]: For 1008/1008 co-relation queries the response was YES. [2023-08-30 11:05:56,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 567574 conditions, 281320 events. 206301/281320 cut-off events. For 1008/1008 co-relation queries the response was YES. Maximal size of possible extension queue 7939. Compared 1976314 event pairs, 172292 based on Foata normal form. 1/108313 useless extension candidates. Maximal degree in co-relation 567565. Up to 281312 conditions per place. [2023-08-30 11:05:57,095 INFO L137 encePairwiseOnDemand]: 2145/2152 looper letters, 93 selfloop transitions, 12 changer transitions 0/105 dead transitions. [2023-08-30 11:05:57,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 105 transitions, 477 flow [2023-08-30 11:05:57,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:05:57,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:05:57,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2700 transitions. [2023-08-30 11:05:57,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41821561338289964 [2023-08-30 11:05:57,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2700 transitions. [2023-08-30 11:05:57,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2700 transitions. [2023-08-30 11:05:57,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:05:57,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2700 transitions. [2023-08-30 11:05:57,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 900.0) internal successors, (2700), 3 states have internal predecessors, (2700), 0 states have call successors, (0), 0 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 11:05:57,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2152.0) internal successors, (8608), 4 states have internal predecessors, (8608), 0 states have call successors, (0), 0 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 11:05:57,116 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2152.0) internal successors, (8608), 4 states have internal predecessors, (8608), 0 states have call successors, (0), 0 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 11:05:57,116 INFO L175 Difference]: Start difference. First operand has 87 places, 107 transitions, 275 flow. Second operand 3 states and 2700 transitions. [2023-08-30 11:05:57,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 105 transitions, 477 flow [2023-08-30 11:05:57,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 105 transitions, 476 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:05:57,119 INFO L231 Difference]: Finished difference. Result has 89 places, 105 transitions, 304 flow [2023-08-30 11:05:57,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2152, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=89, PETRI_TRANSITIONS=105} [2023-08-30 11:05:57,120 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, -16 predicate places. [2023-08-30 11:05:57,120 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 105 transitions, 304 flow [2023-08-30 11:05:57,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 871.0) internal successors, (2613), 3 states have internal predecessors, (2613), 0 states have call successors, (0), 0 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 11:05:57,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:05:57,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:05:57,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 11:05:57,121 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2023-08-30 11:05:57,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:05:57,122 INFO L85 PathProgramCache]: Analyzing trace with hash 406880082, now seen corresponding path program 1 times [2023-08-30 11:05:57,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:05:57,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34997531] [2023-08-30 11:05:57,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:05:57,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:05:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:05:57,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:05:57,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:05:57,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34997531] [2023-08-30 11:05:57,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34997531] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:05:57,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341428296] [2023-08-30 11:05:57,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:05:57,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:05:57,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:05:57,220 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 11:05:57,225 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 11:05:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:05:57,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:05:57,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:05:57,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:05:57,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:05:57,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:05:57,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341428296] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:05:57,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:05:57,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-30 11:05:57,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266800419] [2023-08-30 11:05:57,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:05:57,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 11:05:57,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:05:57,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 11:05:57,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:05:57,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 863 out of 2152 [2023-08-30 11:05:57,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 105 transitions, 304 flow. Second operand has 8 states, 8 states have (on average 864.875) internal successors, (6919), 8 states have internal predecessors, (6919), 0 states have call successors, (0), 0 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 11:05:57,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:05:57,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 863 of 2152 [2023-08-30 11:05:57,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:06:04,712 INFO L130 PetriNetUnfolder]: 51576/70342 cut-off events. [2023-08-30 11:06:04,712 INFO L131 PetriNetUnfolder]: For 258/258 co-relation queries the response was YES. [2023-08-30 11:06:04,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141945 conditions, 70342 events. 51576/70342 cut-off events. For 258/258 co-relation queries the response was YES. Maximal size of possible extension queue 2150. Compared 421925 event pairs, 43073 based on Foata normal form. 9/27101 useless extension candidates. Maximal degree in co-relation 141934. Up to 70331 conditions per place. [2023-08-30 11:06:05,186 INFO L137 encePairwiseOnDemand]: 2145/2152 looper letters, 84 selfloop transitions, 15 changer transitions 0/99 dead transitions. [2023-08-30 11:06:05,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 99 transitions, 460 flow [2023-08-30 11:06:05,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:06:05,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:06:05,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5286 transitions. [2023-08-30 11:06:05,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4093866171003718 [2023-08-30 11:06:05,196 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 5286 transitions. [2023-08-30 11:06:05,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 5286 transitions. [2023-08-30 11:06:05,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:06:05,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 5286 transitions. [2023-08-30 11:06:05,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 881.0) internal successors, (5286), 6 states have internal predecessors, (5286), 0 states have call successors, (0), 0 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 11:06:05,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 2152.0) internal successors, (15064), 7 states have internal predecessors, (15064), 0 states have call successors, (0), 0 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 11:06:05,220 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 2152.0) internal successors, (15064), 7 states have internal predecessors, (15064), 0 states have call successors, (0), 0 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 11:06:05,220 INFO L175 Difference]: Start difference. First operand has 89 places, 105 transitions, 304 flow. Second operand 6 states and 5286 transitions. [2023-08-30 11:06:05,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 99 transitions, 460 flow [2023-08-30 11:06:05,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 99 transitions, 448 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:06:05,223 INFO L231 Difference]: Finished difference. Result has 95 places, 99 transitions, 304 flow [2023-08-30 11:06:05,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2152, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=304, PETRI_PLACES=95, PETRI_TRANSITIONS=99} [2023-08-30 11:06:05,224 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, -10 predicate places. [2023-08-30 11:06:05,224 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 99 transitions, 304 flow [2023-08-30 11:06:05,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 864.875) internal successors, (6919), 8 states have internal predecessors, (6919), 0 states have call successors, (0), 0 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 11:06:05,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:06:05,226 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-30 11:06:05,233 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 11:06:05,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:06:05,433 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2023-08-30 11:06:05,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:06:05,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1776104030, now seen corresponding path program 2 times [2023-08-30 11:06:05,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:06:05,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366692476] [2023-08-30 11:06:05,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:06:05,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:06:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:06:05,594 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-30 11:06:05,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:06:05,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366692476] [2023-08-30 11:06:05,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366692476] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:06:05,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597202340] [2023-08-30 11:06:05,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:06:05,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:06:05,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:06:05,597 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 11:06:05,599 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 11:06:05,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:06:05,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:06:05,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:06:05,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:06:05,828 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 11:06:05,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:06:05,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597202340] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:06:05,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:06:05,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-08-30 11:06:05,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685542304] [2023-08-30 11:06:05,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:06:05,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:06:05,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:06:05,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:06:05,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:06:05,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 879 out of 2152 [2023-08-30 11:06:05,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 99 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 882.0) internal successors, (2646), 3 states have internal predecessors, (2646), 0 states have call successors, (0), 0 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 11:06:05,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:06:05,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 879 of 2152 [2023-08-30 11:06:05,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand