./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.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/popl20-more-sum-array-hom.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 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 --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 11:48:33,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:48:33,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:48:33,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:48:33,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:48:33,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:48:33,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:48:33,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:48:33,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:48:33,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:48:33,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:48:33,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:48:33,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:48:33,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:48:33,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:48:33,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:48:33,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:48:33,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:48:33,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:48:33,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:48:33,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:48:33,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:48:33,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:48:33,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:48:33,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:48:33,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:48:33,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:48:33,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:48:33,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:48:33,950 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:48:33,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:48:33,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:48:33,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:48:33,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:48:33,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:48:33,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:48:33,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:48:33,958 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:48:33,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:48:33,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:48:33,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:48:33,961 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:48:33,994 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:48:33,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:48:33,995 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:48:33,995 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:48:33,996 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:48:33,996 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:48:33,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:48:33,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:48:33,997 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:48:33,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:48:33,998 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:48:33,998 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:48:33,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:48:33,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:48:33,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:48:33,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:48:33,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:48:33,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:48:33,999 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:48:34,000 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:48:34,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:48:34,000 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:48:34,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:48:34,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:48:34,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:48:34,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:48:34,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:48:34,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:48:34,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:48:34,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:48:34,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:48:34,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:48:34,002 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:48:34,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:48:34,003 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:48:34,003 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:48:34,003 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:48:34,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:48:34,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:48:34,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:48:34,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:48:34,316 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:48:34,316 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:48:34,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.wvr.c [2023-08-30 11:48:35,457 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:48:35,659 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:48:35,660 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.wvr.c [2023-08-30 11:48:35,670 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08bbe20ff/da2dc407d4ea479a8587343412d17e14/FLAGeda6c01a1 [2023-08-30 11:48:35,682 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08bbe20ff/da2dc407d4ea479a8587343412d17e14 [2023-08-30 11:48:35,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:48:35,686 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:48:35,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:48:35,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:48:35,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:48:35,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:48:35" (1/1) ... [2023-08-30 11:48:35,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2214c9dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:35, skipping insertion in model container [2023-08-30 11:48:35,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:48:35" (1/1) ... [2023-08-30 11:48:35,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:48:35,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:48:35,882 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/popl20-more-sum-array-hom.wvr.c[2396,2409] [2023-08-30 11:48:35,888 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:48:35,903 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:48:35,940 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/popl20-more-sum-array-hom.wvr.c[2396,2409] [2023-08-30 11:48:35,949 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:48:35,963 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:48:35,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:35 WrapperNode [2023-08-30 11:48:35,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:48:35,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:48:35,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:48:35,966 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:48:35,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:35" (1/1) ... [2023-08-30 11:48:35,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:35" (1/1) ... [2023-08-30 11:48:36,017 INFO L138 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 107 [2023-08-30 11:48:36,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:48:36,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:48:36,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:48:36,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:48:36,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:35" (1/1) ... [2023-08-30 11:48:36,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:35" (1/1) ... [2023-08-30 11:48:36,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:35" (1/1) ... [2023-08-30 11:48:36,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:35" (1/1) ... [2023-08-30 11:48:36,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:35" (1/1) ... [2023-08-30 11:48:36,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:35" (1/1) ... [2023-08-30 11:48:36,065 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:35" (1/1) ... [2023-08-30 11:48:36,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:35" (1/1) ... [2023-08-30 11:48:36,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:48:36,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:48:36,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:48:36,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:48:36,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:35" (1/1) ... [2023-08-30 11:48:36,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:48:36,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:48:36,108 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 11:48:36,132 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 11:48:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:48:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:48:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:48:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:48:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:48:36,146 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:48:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:48:36,146 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:48:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:48:36,146 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:48:36,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:48:36,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:48:36,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:48:36,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:48:36,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:48:36,149 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 11:48:36,265 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:48:36,267 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:48:36,563 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:48:36,570 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:48:36,573 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 11:48:36,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:48:36 BoogieIcfgContainer [2023-08-30 11:48:36,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:48:36,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:48:36,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:48:36,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:48:36,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:48:35" (1/3) ... [2023-08-30 11:48:36,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730d5a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:48:36, skipping insertion in model container [2023-08-30 11:48:36,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:35" (2/3) ... [2023-08-30 11:48:36,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730d5a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:48:36, skipping insertion in model container [2023-08-30 11:48:36,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:48:36" (3/3) ... [2023-08-30 11:48:36,584 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2023-08-30 11:48:36,591 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:48:36,599 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:48:36,600 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 11:48:36,600 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:48:36,682 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 11:48:36,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 165 transitions, 354 flow [2023-08-30 11:48:36,797 INFO L130 PetriNetUnfolder]: 12/162 cut-off events. [2023-08-30 11:48:36,797 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:48:36,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 162 events. 12/162 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 159 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-08-30 11:48:36,803 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 165 transitions, 354 flow [2023-08-30 11:48:36,808 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 144 transitions, 303 flow [2023-08-30 11:48:36,814 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:48:36,828 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 144 transitions, 303 flow [2023-08-30 11:48:36,835 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 144 transitions, 303 flow [2023-08-30 11:48:36,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 144 transitions, 303 flow [2023-08-30 11:48:36,912 INFO L130 PetriNetUnfolder]: 11/144 cut-off events. [2023-08-30 11:48:36,912 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:48:36,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 144 events. 11/144 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 158 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-08-30 11:48:36,917 INFO L119 LiptonReduction]: Number of co-enabled transitions 2688 [2023-08-30 11:48:41,784 INFO L134 LiptonReduction]: Checked pairs total: 2954 [2023-08-30 11:48:41,784 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-30 11:48:41,796 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:48:41,801 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;@31aaa901, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:48:41,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-30 11:48:41,804 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:48:41,804 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:48:41,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:41,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:48:41,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:48:41,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:41,809 INFO L85 PathProgramCache]: Analyzing trace with hash 19618, now seen corresponding path program 1 times [2023-08-30 11:48:41,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:41,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809617338] [2023-08-30 11:48:41,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:41,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:42,073 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 11:48:42,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:42,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809617338] [2023-08-30 11:48:42,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809617338] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:42,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:48:42,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:48:42,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886157392] [2023-08-30 11:48:42,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:42,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:48:42,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:42,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:48:42,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:48:42,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 314 [2023-08-30 11:48:42,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 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 11:48:42,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:42,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 314 [2023-08-30 11:48:42,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:42,455 INFO L130 PetriNetUnfolder]: 2441/3187 cut-off events. [2023-08-30 11:48:42,455 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2023-08-30 11:48:42,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6502 conditions, 3187 events. 2441/3187 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 13664 event pairs, 1155 based on Foata normal form. 0/1166 useless extension candidates. Maximal degree in co-relation 2744. Up to 1566 conditions per place. [2023-08-30 11:48:42,476 INFO L137 encePairwiseOnDemand]: 310/314 looper letters, 49 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-08-30 11:48:42,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 54 transitions, 240 flow [2023-08-30 11:48:42,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:48:42,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:48:42,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2023-08-30 11:48:42,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524416135881104 [2023-08-30 11:48:42,490 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2023-08-30 11:48:42,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2023-08-30 11:48:42,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:42,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2023-08-30 11:48:42,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 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 11:48:42,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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 11:48:42,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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 11:48:42,505 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 75 flow. Second operand 3 states and 494 transitions. [2023-08-30 11:48:42,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 54 transitions, 240 flow [2023-08-30 11:48:42,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 54 transitions, 222 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 11:48:42,511 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 80 flow [2023-08-30 11:48:42,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2023-08-30 11:48:42,515 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-08-30 11:48:42,516 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 80 flow [2023-08-30 11:48:42,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 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 11:48:42,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:42,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:48:42,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:48:42,517 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:48:42,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:42,518 INFO L85 PathProgramCache]: Analyzing trace with hash 609021, now seen corresponding path program 1 times [2023-08-30 11:48:42,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:42,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446064282] [2023-08-30 11:48:42,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:42,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:42,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:42,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:42,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446064282] [2023-08-30 11:48:42,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446064282] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:42,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:48:42,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:48:42,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057271454] [2023-08-30 11:48:42,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:42,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:48:42,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:42,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:48:42,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:48:42,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 314 [2023-08-30 11:48:42,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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 11:48:42,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:42,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 314 [2023-08-30 11:48:42,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:42,862 INFO L130 PetriNetUnfolder]: 2449/3194 cut-off events. [2023-08-30 11:48:42,862 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 11:48:42,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6449 conditions, 3194 events. 2449/3194 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 13667 event pairs, 1156 based on Foata normal form. 0/1169 useless extension candidates. Maximal degree in co-relation 3222. Up to 3134 conditions per place. [2023-08-30 11:48:42,879 INFO L137 encePairwiseOnDemand]: 312/314 looper letters, 26 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-08-30 11:48:42,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 30 transitions, 130 flow [2023-08-30 11:48:42,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:48:42,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:48:42,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 468 transitions. [2023-08-30 11:48:42,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968152866242038 [2023-08-30 11:48:42,885 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 468 transitions. [2023-08-30 11:48:42,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 468 transitions. [2023-08-30 11:48:42,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:42,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 468 transitions. [2023-08-30 11:48:42,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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 11:48:42,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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 11:48:42,891 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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 11:48:42,891 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 80 flow. Second operand 3 states and 468 transitions. [2023-08-30 11:48:42,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 30 transitions, 130 flow [2023-08-30 11:48:42,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 128 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:48:42,892 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 76 flow [2023-08-30 11:48:42,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2023-08-30 11:48:42,893 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-08-30 11:48:42,893 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 76 flow [2023-08-30 11:48:42,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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 11:48:42,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:42,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:48:42,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 11:48:42,895 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:48:42,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:42,897 INFO L85 PathProgramCache]: Analyzing trace with hash 609020, now seen corresponding path program 1 times [2023-08-30 11:48:42,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:42,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299580748] [2023-08-30 11:48:42,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:42,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:43,009 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 11:48:43,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:43,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299580748] [2023-08-30 11:48:43,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299580748] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:48:43,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533231421] [2023-08-30 11:48:43,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:43,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:43,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:48:43,013 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 11:48:43,015 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 11:48:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:43,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:48:43,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:48:43,134 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 11:48:43,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:48:43,162 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 11:48:43,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533231421] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:48:43,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:48:43,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:48:43,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230194276] [2023-08-30 11:48:43,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:48:43,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:48:43,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:43,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:48:43,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:48:43,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 314 [2023-08-30 11:48:43,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 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 11:48:43,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:43,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 314 [2023-08-30 11:48:43,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:43,910 INFO L130 PetriNetUnfolder]: 6089/7950 cut-off events. [2023-08-30 11:48:43,911 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-08-30 11:48:43,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16038 conditions, 7950 events. 6089/7950 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 38430 event pairs, 2886 based on Foata normal form. 0/2917 useless extension candidates. Maximal degree in co-relation 16030. Up to 1566 conditions per place. [2023-08-30 11:48:43,950 INFO L137 encePairwiseOnDemand]: 311/314 looper letters, 117 selfloop transitions, 5 changer transitions 0/125 dead transitions. [2023-08-30 11:48:43,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 125 transitions, 540 flow [2023-08-30 11:48:43,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:48:43,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:48:43,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1007 transitions. [2023-08-30 11:48:43,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345010615711253 [2023-08-30 11:48:43,955 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1007 transitions. [2023-08-30 11:48:43,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1007 transitions. [2023-08-30 11:48:43,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:43,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1007 transitions. [2023-08-30 11:48:43,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.83333333333334) internal successors, (1007), 6 states have internal predecessors, (1007), 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 11:48:43,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 314.0) internal successors, (2198), 7 states have internal predecessors, (2198), 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 11:48:43,962 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 314.0) internal successors, (2198), 7 states have internal predecessors, (2198), 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 11:48:43,962 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 76 flow. Second operand 6 states and 1007 transitions. [2023-08-30 11:48:43,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 125 transitions, 540 flow [2023-08-30 11:48:43,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 125 transitions, 539 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:48:43,967 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 111 flow [2023-08-30 11:48:43,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=111, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2023-08-30 11:48:43,968 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2023-08-30 11:48:43,968 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 111 flow [2023-08-30 11:48:43,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 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 11:48:43,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:43,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 11:48:43,975 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 11:48:44,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:44,176 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:48:44,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:44,177 INFO L85 PathProgramCache]: Analyzing trace with hash 585731244, now seen corresponding path program 1 times [2023-08-30 11:48:44,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:44,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494391017] [2023-08-30 11:48:44,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:44,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:44,252 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 11:48:44,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:44,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494391017] [2023-08-30 11:48:44,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494391017] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:44,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:48:44,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:48:44,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146298978] [2023-08-30 11:48:44,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:44,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:48:44,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:44,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:48:44,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:48:44,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 314 [2023-08-30 11:48:44,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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 11:48:44,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:44,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 314 [2023-08-30 11:48:44,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:45,122 INFO L130 PetriNetUnfolder]: 8331/11112 cut-off events. [2023-08-30 11:48:45,122 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2023-08-30 11:48:45,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22506 conditions, 11112 events. 8331/11112 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 59819 event pairs, 1930 based on Foata normal form. 0/4577 useless extension candidates. Maximal degree in co-relation 22494. Up to 7078 conditions per place. [2023-08-30 11:48:45,176 INFO L137 encePairwiseOnDemand]: 310/314 looper letters, 48 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-08-30 11:48:45,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 254 flow [2023-08-30 11:48:45,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:48:45,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:48:45,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 492 transitions. [2023-08-30 11:48:45,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222929936305732 [2023-08-30 11:48:45,179 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 492 transitions. [2023-08-30 11:48:45,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 492 transitions. [2023-08-30 11:48:45,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:45,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 492 transitions. [2023-08-30 11:48:45,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 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 11:48:45,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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 11:48:45,184 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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 11:48:45,184 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 111 flow. Second operand 3 states and 492 transitions. [2023-08-30 11:48:45,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 254 flow [2023-08-30 11:48:45,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 246 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 11:48:45,187 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 117 flow [2023-08-30 11:48:45,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2023-08-30 11:48:45,189 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2023-08-30 11:48:45,189 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 117 flow [2023-08-30 11:48:45,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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 11:48:45,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:45,190 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:48:45,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 11:48:45,190 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:48:45,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:45,191 INFO L85 PathProgramCache]: Analyzing trace with hash 964332385, now seen corresponding path program 2 times [2023-08-30 11:48:45,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:45,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770206039] [2023-08-30 11:48:45,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:45,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:45,310 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 11:48:45,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:45,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770206039] [2023-08-30 11:48:45,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770206039] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:48:45,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989110528] [2023-08-30 11:48:45,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:48:45,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:45,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:48:45,313 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 11:48:45,315 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 11:48:45,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:48:45,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:48:45,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:48:45,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:48:45,399 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 11:48:45,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:48:45,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989110528] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:45,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:48:45,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:48:45,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20714169] [2023-08-30 11:48:45,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:45,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:48:45,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:45,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:48:45,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:48:45,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 314 [2023-08-30 11:48:45,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 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 11:48:45,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:45,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 314 [2023-08-30 11:48:45,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:46,137 INFO L130 PetriNetUnfolder]: 7076/9551 cut-off events. [2023-08-30 11:48:46,138 INFO L131 PetriNetUnfolder]: For 603/873 co-relation queries the response was YES. [2023-08-30 11:48:46,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20693 conditions, 9551 events. 7076/9551 cut-off events. For 603/873 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 52026 event pairs, 3890 based on Foata normal form. 271/4642 useless extension candidates. Maximal degree in co-relation 20680. Up to 9381 conditions per place. [2023-08-30 11:48:46,196 INFO L137 encePairwiseOnDemand]: 312/314 looper letters, 29 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-08-30 11:48:46,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 33 transitions, 167 flow [2023-08-30 11:48:46,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:48:46,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:48:46,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2023-08-30 11:48:46,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4989384288747346 [2023-08-30 11:48:46,199 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 470 transitions. [2023-08-30 11:48:46,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 470 transitions. [2023-08-30 11:48:46,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:46,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 470 transitions. [2023-08-30 11:48:46,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 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 11:48:46,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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 11:48:46,204 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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 11:48:46,204 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 117 flow. Second operand 3 states and 470 transitions. [2023-08-30 11:48:46,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 33 transitions, 167 flow [2023-08-30 11:48:46,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 155 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 11:48:46,209 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 97 flow [2023-08-30 11:48:46,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-08-30 11:48:46,211 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2023-08-30 11:48:46,214 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 97 flow [2023-08-30 11:48:46,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 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 11:48:46,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:46,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:48:46,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 11:48:46,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:46,421 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:48:46,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:46,422 INFO L85 PathProgramCache]: Analyzing trace with hash 977799977, now seen corresponding path program 1 times [2023-08-30 11:48:46,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:46,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44343840] [2023-08-30 11:48:46,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:46,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:46,483 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 11:48:46,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:46,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44343840] [2023-08-30 11:48:46,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44343840] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:48:46,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418985422] [2023-08-30 11:48:46,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:46,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:46,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:48:46,485 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 11:48:46,488 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 11:48:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:46,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:48:46,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:48:46,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:46,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:48:46,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418985422] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:46,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:48:46,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-08-30 11:48:46,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441733188] [2023-08-30 11:48:46,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:46,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:48:46,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:46,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:48:46,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:48:46,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 314 [2023-08-30 11:48:46,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 142.2) internal successors, (711), 5 states have internal predecessors, (711), 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 11:48:46,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:46,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 314 [2023-08-30 11:48:46,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:47,351 INFO L130 PetriNetUnfolder]: 6913/9343 cut-off events. [2023-08-30 11:48:47,352 INFO L131 PetriNetUnfolder]: For 747/747 co-relation queries the response was YES. [2023-08-30 11:48:47,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20045 conditions, 9343 events. 6913/9343 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 50159 event pairs, 3591 based on Foata normal form. 52/4466 useless extension candidates. Maximal degree in co-relation 20035. Up to 8410 conditions per place. [2023-08-30 11:48:47,398 INFO L137 encePairwiseOnDemand]: 308/314 looper letters, 59 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2023-08-30 11:48:47,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 65 transitions, 298 flow [2023-08-30 11:48:47,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:48:47,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:48:47,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 767 transitions. [2023-08-30 11:48:47,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48853503184713376 [2023-08-30 11:48:47,401 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 767 transitions. [2023-08-30 11:48:47,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 767 transitions. [2023-08-30 11:48:47,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:47,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 767 transitions. [2023-08-30 11:48:47,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.4) internal successors, (767), 5 states have internal predecessors, (767), 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 11:48:47,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 314.0) internal successors, (1884), 6 states have internal predecessors, (1884), 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 11:48:47,465 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 314.0) internal successors, (1884), 6 states have internal predecessors, (1884), 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 11:48:47,465 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 97 flow. Second operand 5 states and 767 transitions. [2023-08-30 11:48:47,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 65 transitions, 298 flow [2023-08-30 11:48:47,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 65 transitions, 297 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:48:47,467 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 126 flow [2023-08-30 11:48:47,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2023-08-30 11:48:47,468 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2023-08-30 11:48:47,468 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 126 flow [2023-08-30 11:48:47,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.2) internal successors, (711), 5 states have internal predecessors, (711), 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 11:48:47,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:47,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:48:47,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 11:48:47,674 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 11:48:47,674 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:48:47,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:47,674 INFO L85 PathProgramCache]: Analyzing trace with hash 251954377, now seen corresponding path program 1 times [2023-08-30 11:48:47,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:47,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729574668] [2023-08-30 11:48:47,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:47,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:47,724 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 11:48:47,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:47,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729574668] [2023-08-30 11:48:47,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729574668] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:47,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:48:47,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:48:47,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736290174] [2023-08-30 11:48:47,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:47,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:48:47,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:47,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:48:47,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:48:47,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 314 [2023-08-30 11:48:47,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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 11:48:47,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:47,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 314 [2023-08-30 11:48:47,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:48,455 INFO L130 PetriNetUnfolder]: 8062/11133 cut-off events. [2023-08-30 11:48:48,455 INFO L131 PetriNetUnfolder]: For 4139/4623 co-relation queries the response was YES. [2023-08-30 11:48:48,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26504 conditions, 11133 events. 8062/11133 cut-off events. For 4139/4623 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 65439 event pairs, 3653 based on Foata normal form. 481/7114 useless extension candidates. Maximal degree in co-relation 26490. Up to 7771 conditions per place. [2023-08-30 11:48:48,508 INFO L137 encePairwiseOnDemand]: 310/314 looper letters, 48 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-08-30 11:48:48,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 53 transitions, 280 flow [2023-08-30 11:48:48,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:48:48,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:48:48,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2023-08-30 11:48:48,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191082802547771 [2023-08-30 11:48:48,510 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2023-08-30 11:48:48,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2023-08-30 11:48:48,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:48,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2023-08-30 11:48:48,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 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 11:48:48,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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 11:48:48,514 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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 11:48:48,514 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 126 flow. Second operand 3 states and 489 transitions. [2023-08-30 11:48:48,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 53 transitions, 280 flow [2023-08-30 11:48:48,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 274 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 11:48:48,521 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 134 flow [2023-08-30 11:48:48,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2023-08-30 11:48:48,522 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2023-08-30 11:48:48,522 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 134 flow [2023-08-30 11:48:48,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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 11:48:48,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:48,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:48:48,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 11:48:48,524 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:48:48,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:48,525 INFO L85 PathProgramCache]: Analyzing trace with hash -156998660, now seen corresponding path program 1 times [2023-08-30 11:48:48,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:48,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998459973] [2023-08-30 11:48:48,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:48,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:48,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:48:48,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:48,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998459973] [2023-08-30 11:48:48,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998459973] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:48,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:48:48,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:48:48,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141084674] [2023-08-30 11:48:48,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:48,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:48:48,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:48,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:48:48,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:48:48,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 314 [2023-08-30 11:48:48,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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 11:48:48,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:48,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 314 [2023-08-30 11:48:48,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:49,266 INFO L130 PetriNetUnfolder]: 7064/9745 cut-off events. [2023-08-30 11:48:49,266 INFO L131 PetriNetUnfolder]: For 3941/4382 co-relation queries the response was YES. [2023-08-30 11:48:49,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25404 conditions, 9745 events. 7064/9745 cut-off events. For 3941/4382 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 57017 event pairs, 402 based on Foata normal form. 399/7196 useless extension candidates. Maximal degree in co-relation 25390. Up to 8812 conditions per place. [2023-08-30 11:48:49,328 INFO L137 encePairwiseOnDemand]: 312/314 looper letters, 45 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-08-30 11:48:49,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 49 transitions, 268 flow [2023-08-30 11:48:49,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:48:49,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:48:49,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2023-08-30 11:48:49,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127388535031847 [2023-08-30 11:48:49,330 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2023-08-30 11:48:49,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2023-08-30 11:48:49,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:49,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2023-08-30 11:48:49,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 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 11:48:49,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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 11:48:49,334 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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 11:48:49,334 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 134 flow. Second operand 3 states and 483 transitions. [2023-08-30 11:48:49,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 49 transitions, 268 flow [2023-08-30 11:48:49,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 49 transitions, 265 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:48:49,339 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 132 flow [2023-08-30 11:48:49,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2023-08-30 11:48:49,340 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2023-08-30 11:48:49,340 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 132 flow [2023-08-30 11:48:49,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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 11:48:49,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:49,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:48:49,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 11:48:49,341 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:48:49,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:49,341 INFO L85 PathProgramCache]: Analyzing trace with hash -156998652, now seen corresponding path program 1 times [2023-08-30 11:48:49,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:49,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508417153] [2023-08-30 11:48:49,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:49,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:49,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:48:49,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:49,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508417153] [2023-08-30 11:48:49,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508417153] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:48:49,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638479986] [2023-08-30 11:48:49,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:49,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:49,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:48:49,397 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 11:48:49,401 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 11:48:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:49,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 11:48:49,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:48:49,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:49,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:48:49,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:49,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638479986] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:48:49,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:48:49,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-08-30 11:48:49,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172772726] [2023-08-30 11:48:49,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:48:49,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:48:49,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:49,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:48:49,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:48:49,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 314 [2023-08-30 11:48:49,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 132 flow. Second operand has 13 states, 13 states have (on average 139.53846153846155) internal successors, (1814), 13 states have internal predecessors, (1814), 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 11:48:49,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:49,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 314 [2023-08-30 11:48:49,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:50,881 INFO L130 PetriNetUnfolder]: 7898/11100 cut-off events. [2023-08-30 11:48:50,882 INFO L131 PetriNetUnfolder]: For 6545/7020 co-relation queries the response was YES. [2023-08-30 11:48:50,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27767 conditions, 11100 events. 7898/11100 cut-off events. For 6545/7020 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 66616 event pairs, 799 based on Foata normal form. 1044/8741 useless extension candidates. Maximal degree in co-relation 27753. Up to 2405 conditions per place. [2023-08-30 11:48:50,941 INFO L137 encePairwiseOnDemand]: 306/314 looper letters, 207 selfloop transitions, 16 changer transitions 0/225 dead transitions. [2023-08-30 11:48:50,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 225 transitions, 1128 flow [2023-08-30 11:48:50,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 11:48:50,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 11:48:50,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2425 transitions. [2023-08-30 11:48:50,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48268312101910826 [2023-08-30 11:48:50,947 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2425 transitions. [2023-08-30 11:48:50,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2425 transitions. [2023-08-30 11:48:50,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:50,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2425 transitions. [2023-08-30 11:48:50,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 151.5625) internal successors, (2425), 16 states have internal predecessors, (2425), 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 11:48:50,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 314.0) internal successors, (5338), 17 states have internal predecessors, (5338), 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 11:48:50,959 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 314.0) internal successors, (5338), 17 states have internal predecessors, (5338), 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 11:48:50,960 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 132 flow. Second operand 16 states and 2425 transitions. [2023-08-30 11:48:50,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 225 transitions, 1128 flow [2023-08-30 11:48:50,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 225 transitions, 1125 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:48:50,966 INFO L231 Difference]: Finished difference. Result has 68 places, 44 transitions, 232 flow [2023-08-30 11:48:50,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=232, PETRI_PLACES=68, PETRI_TRANSITIONS=44} [2023-08-30 11:48:50,967 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2023-08-30 11:48:50,967 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 44 transitions, 232 flow [2023-08-30 11:48:50,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 139.53846153846155) internal successors, (1814), 13 states have internal predecessors, (1814), 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 11:48:50,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:50,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:48:50,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 11:48:51,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:51,174 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:48:51,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:51,174 INFO L85 PathProgramCache]: Analyzing trace with hash -779348364, now seen corresponding path program 1 times [2023-08-30 11:48:51,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:51,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476120828] [2023-08-30 11:48:51,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:51,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:51,229 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 11:48:51,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:51,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476120828] [2023-08-30 11:48:51,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476120828] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:48:51,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408840988] [2023-08-30 11:48:51,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:51,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:51,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:48:51,231 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:48:51,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 11:48:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:51,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:48:51,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:48:51,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:51,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:48:51,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408840988] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:51,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:48:51,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 11:48:51,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276963581] [2023-08-30 11:48:51,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:51,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:48:51,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:51,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:48:51,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:48:51,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 314 [2023-08-30 11:48:51,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 44 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 11:48:51,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:51,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 314 [2023-08-30 11:48:51,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:51,873 INFO L130 PetriNetUnfolder]: 7180/10069 cut-off events. [2023-08-30 11:48:51,873 INFO L131 PetriNetUnfolder]: For 26622/27209 co-relation queries the response was YES. [2023-08-30 11:48:51,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30535 conditions, 10069 events. 7180/10069 cut-off events. For 26622/27209 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 58978 event pairs, 796 based on Foata normal form. 561/7856 useless extension candidates. Maximal degree in co-relation 30512. Up to 5460 conditions per place. [2023-08-30 11:48:51,934 INFO L137 encePairwiseOnDemand]: 311/314 looper letters, 80 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-08-30 11:48:51,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 86 transitions, 615 flow [2023-08-30 11:48:51,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:48:51,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:48:51,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 645 transitions. [2023-08-30 11:48:51,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135350318471338 [2023-08-30 11:48:51,937 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 645 transitions. [2023-08-30 11:48:51,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 645 transitions. [2023-08-30 11:48:51,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:51,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 645 transitions. [2023-08-30 11:48:51,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 161.25) internal successors, (645), 4 states have internal predecessors, (645), 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 11:48:51,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 314.0) internal successors, (1570), 5 states have internal predecessors, (1570), 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 11:48:51,941 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 314.0) internal successors, (1570), 5 states have internal predecessors, (1570), 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 11:48:51,941 INFO L175 Difference]: Start difference. First operand has 68 places, 44 transitions, 232 flow. Second operand 4 states and 645 transitions. [2023-08-30 11:48:51,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 86 transitions, 615 flow [2023-08-30 11:48:51,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 86 transitions, 563 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-08-30 11:48:51,974 INFO L231 Difference]: Finished difference. Result has 66 places, 43 transitions, 204 flow [2023-08-30 11:48:51,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=66, PETRI_TRANSITIONS=43} [2023-08-30 11:48:51,975 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2023-08-30 11:48:51,975 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 43 transitions, 204 flow [2023-08-30 11:48:51,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 11:48:51,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:51,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:48:51,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 11:48:52,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 11:48:52,182 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:48:52,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:52,182 INFO L85 PathProgramCache]: Analyzing trace with hash -779348363, now seen corresponding path program 1 times [2023-08-30 11:48:52,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:52,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836776712] [2023-08-30 11:48:52,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:52,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:52,217 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 11:48:52,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:52,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836776712] [2023-08-30 11:48:52,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836776712] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:48:52,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630405292] [2023-08-30 11:48:52,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:52,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:52,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:48:52,220 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:48:52,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 11:48:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:52,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:48:52,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:48:52,308 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 11:48:52,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:48:52,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:52,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630405292] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:48:52,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:48:52,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 11:48:52,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338808893] [2023-08-30 11:48:52,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:48:52,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:48:52,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:52,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:48:52,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:48:52,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 314 [2023-08-30 11:48:52,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 43 transitions, 204 flow. Second operand has 7 states, 7 states have (on average 149.85714285714286) internal successors, (1049), 7 states have internal predecessors, (1049), 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 11:48:52,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:52,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 314 [2023-08-30 11:48:52,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:53,461 INFO L130 PetriNetUnfolder]: 14479/20302 cut-off events. [2023-08-30 11:48:53,462 INFO L131 PetriNetUnfolder]: For 50217/51368 co-relation queries the response was YES. [2023-08-30 11:48:53,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60097 conditions, 20302 events. 14479/20302 cut-off events. For 50217/51368 co-relation queries the response was YES. Maximal size of possible extension queue 1159. Compared 131610 event pairs, 2375 based on Foata normal form. 1151/16281 useless extension candidates. Maximal degree in co-relation 60074. Up to 6530 conditions per place. [2023-08-30 11:48:53,566 INFO L137 encePairwiseOnDemand]: 311/314 looper letters, 129 selfloop transitions, 5 changer transitions 0/138 dead transitions. [2023-08-30 11:48:53,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 138 transitions, 896 flow [2023-08-30 11:48:53,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:48:53,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:48:53,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 979 transitions. [2023-08-30 11:48:53,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196390658174098 [2023-08-30 11:48:53,569 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 979 transitions. [2023-08-30 11:48:53,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 979 transitions. [2023-08-30 11:48:53,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:53,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 979 transitions. [2023-08-30 11:48:53,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 163.16666666666666) internal successors, (979), 6 states have internal predecessors, (979), 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 11:48:53,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 314.0) internal successors, (2198), 7 states have internal predecessors, (2198), 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 11:48:53,575 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 314.0) internal successors, (2198), 7 states have internal predecessors, (2198), 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 11:48:53,576 INFO L175 Difference]: Start difference. First operand has 66 places, 43 transitions, 204 flow. Second operand 6 states and 979 transitions. [2023-08-30 11:48:53,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 138 transitions, 896 flow [2023-08-30 11:48:53,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 138 transitions, 893 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:48:53,597 INFO L231 Difference]: Finished difference. Result has 72 places, 46 transitions, 237 flow [2023-08-30 11:48:53,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=72, PETRI_TRANSITIONS=46} [2023-08-30 11:48:53,597 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2023-08-30 11:48:53,598 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 46 transitions, 237 flow [2023-08-30 11:48:53,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 149.85714285714286) internal successors, (1049), 7 states have internal predecessors, (1049), 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 11:48:53,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:53,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:48:53,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 11:48:53,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:53,804 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:48:53,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:53,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1614511956, now seen corresponding path program 1 times [2023-08-30 11:48:53,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:53,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622386584] [2023-08-30 11:48:53,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:53,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:53,855 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 11:48:53,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:53,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622386584] [2023-08-30 11:48:53,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622386584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:53,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:48:53,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:48:53,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492938028] [2023-08-30 11:48:53,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:53,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:48:53,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:53,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:48:53,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:48:53,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 314 [2023-08-30 11:48:53,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 46 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 148.25) internal successors, (593), 4 states have internal predecessors, (593), 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 11:48:53,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:53,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 314 [2023-08-30 11:48:53,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:54,678 INFO L130 PetriNetUnfolder]: 8850/13277 cut-off events. [2023-08-30 11:48:54,678 INFO L131 PetriNetUnfolder]: For 34088/35505 co-relation queries the response was YES. [2023-08-30 11:48:54,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42485 conditions, 13277 events. 8850/13277 cut-off events. For 34088/35505 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 87304 event pairs, 2106 based on Foata normal form. 1417/13306 useless extension candidates. Maximal degree in co-relation 42459. Up to 9245 conditions per place. [2023-08-30 11:48:54,732 INFO L137 encePairwiseOnDemand]: 311/314 looper letters, 62 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-30 11:48:54,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 483 flow [2023-08-30 11:48:54,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:48:54,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:48:54,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 619 transitions. [2023-08-30 11:48:54,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928343949044586 [2023-08-30 11:48:54,734 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 619 transitions. [2023-08-30 11:48:54,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 619 transitions. [2023-08-30 11:48:54,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:54,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 619 transitions. [2023-08-30 11:48:54,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 154.75) internal successors, (619), 4 states have internal predecessors, (619), 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 11:48:54,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 314.0) internal successors, (1570), 5 states have internal predecessors, (1570), 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 11:48:54,738 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 314.0) internal successors, (1570), 5 states have internal predecessors, (1570), 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 11:48:54,739 INFO L175 Difference]: Start difference. First operand has 72 places, 46 transitions, 237 flow. Second operand 4 states and 619 transitions. [2023-08-30 11:48:54,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 483 flow [2023-08-30 11:48:54,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 68 transitions, 468 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 11:48:54,765 INFO L231 Difference]: Finished difference. Result has 73 places, 45 transitions, 231 flow [2023-08-30 11:48:54,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=231, PETRI_PLACES=73, PETRI_TRANSITIONS=45} [2023-08-30 11:48:54,766 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 37 predicate places. [2023-08-30 11:48:54,766 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 45 transitions, 231 flow [2023-08-30 11:48:54,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.25) internal successors, (593), 4 states have internal predecessors, (593), 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 11:48:54,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:54,766 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 11:48:54,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 11:48:54,767 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:48:54,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:54,767 INFO L85 PathProgramCache]: Analyzing trace with hash -191779604, now seen corresponding path program 2 times [2023-08-30 11:48:54,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:54,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724092133] [2023-08-30 11:48:54,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:54,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:54,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:48:54,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:54,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724092133] [2023-08-30 11:48:54,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724092133] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:48:54,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919130682] [2023-08-30 11:48:54,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:48:54,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:54,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:48:54,833 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:48:54,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 11:48:54,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:48:54,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:48:54,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:48:54,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:48:54,931 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 11:48:54,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:48:54,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919130682] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:54,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:48:54,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-30 11:48:54,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963209944] [2023-08-30 11:48:54,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:54,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:48:54,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:54,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:48:54,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:48:54,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 314 [2023-08-30 11:48:54,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 45 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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 11:48:54,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:54,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 314 [2023-08-30 11:48:54,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:55,552 INFO L130 PetriNetUnfolder]: 7514/10855 cut-off events. [2023-08-30 11:48:55,552 INFO L131 PetriNetUnfolder]: For 41015/42240 co-relation queries the response was YES. [2023-08-30 11:48:55,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29354 conditions, 10855 events. 7514/10855 cut-off events. For 41015/42240 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 67139 event pairs, 5211 based on Foata normal form. 1913/10974 useless extension candidates. Maximal degree in co-relation 29326. Up to 10780 conditions per place. [2023-08-30 11:48:55,586 INFO L137 encePairwiseOnDemand]: 311/314 looper letters, 34 selfloop transitions, 1 changer transitions 3/43 dead transitions. [2023-08-30 11:48:55,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 43 transitions, 281 flow [2023-08-30 11:48:55,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:48:55,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:48:55,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 466 transitions. [2023-08-30 11:48:55,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49469214437367304 [2023-08-30 11:48:55,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 466 transitions. [2023-08-30 11:48:55,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 466 transitions. [2023-08-30 11:48:55,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:55,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 466 transitions. [2023-08-30 11:48:55,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 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 11:48:55,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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 11:48:55,592 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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 11:48:55,592 INFO L175 Difference]: Start difference. First operand has 73 places, 45 transitions, 231 flow. Second operand 3 states and 466 transitions. [2023-08-30 11:48:55,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 43 transitions, 281 flow [2023-08-30 11:48:55,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 43 transitions, 263 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-08-30 11:48:55,604 INFO L231 Difference]: Finished difference. Result has 64 places, 40 transitions, 182 flow [2023-08-30 11:48:55,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=64, PETRI_TRANSITIONS=40} [2023-08-30 11:48:55,605 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 28 predicate places. [2023-08-30 11:48:55,605 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 40 transitions, 182 flow [2023-08-30 11:48:55,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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 11:48:55,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:55,605 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:48:55,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 11:48:55,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:55,811 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:48:55,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:55,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1026627466, now seen corresponding path program 2 times [2023-08-30 11:48:55,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:55,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468482576] [2023-08-30 11:48:55,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:55,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:55,879 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 11:48:55,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:55,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468482576] [2023-08-30 11:48:55,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468482576] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:48:55,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333499814] [2023-08-30 11:48:55,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:48:55,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:55,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:48:55,881 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:48:55,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 11:48:55,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:48:55,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:48:55,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:48:55,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:48:55,977 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 11:48:55,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:48:55,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333499814] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:55,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:48:55,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-08-30 11:48:55,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946662765] [2023-08-30 11:48:55,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:55,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:48:55,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:55,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:48:55,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:48:55,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 314 [2023-08-30 11:48:55,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 40 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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 11:48:55,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:55,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 314 [2023-08-30 11:48:55,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:56,258 INFO L130 PetriNetUnfolder]: 3214/4611 cut-off events. [2023-08-30 11:48:56,258 INFO L131 PetriNetUnfolder]: For 7504/8281 co-relation queries the response was YES. [2023-08-30 11:48:56,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13630 conditions, 4611 events. 3214/4611 cut-off events. For 7504/8281 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 24317 event pairs, 2131 based on Foata normal form. 1041/4936 useless extension candidates. Maximal degree in co-relation 13609. Up to 4564 conditions per place. [2023-08-30 11:48:56,272 INFO L137 encePairwiseOnDemand]: 312/314 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2023-08-30 11:48:56,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 39 transitions, 240 flow [2023-08-30 11:48:56,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:48:56,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:48:56,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 461 transitions. [2023-08-30 11:48:56,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4893842887473461 [2023-08-30 11:48:56,275 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 461 transitions. [2023-08-30 11:48:56,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 461 transitions. [2023-08-30 11:48:56,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:56,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 461 transitions. [2023-08-30 11:48:56,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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 11:48:56,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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 11:48:56,278 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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 11:48:56,278 INFO L175 Difference]: Start difference. First operand has 64 places, 40 transitions, 182 flow. Second operand 3 states and 461 transitions. [2023-08-30 11:48:56,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 39 transitions, 240 flow [2023-08-30 11:48:56,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 39 transitions, 221 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-30 11:48:56,290 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2023-08-30 11:48:56,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2023-08-30 11:48:56,290 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2023-08-30 11:48:56,290 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2023-08-30 11:48:56,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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 11:48:56,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2023-08-30 11:48:56,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-08-30 11:48:56,294 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-08-30 11:48:56,294 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-08-30 11:48:56,294 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-08-30 11:48:56,294 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-08-30 11:48:56,294 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-08-30 11:48:56,294 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-08-30 11:48:56,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2023-08-30 11:48:56,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2023-08-30 11:48:56,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2023-08-30 11:48:56,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-08-30 11:48:56,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-08-30 11:48:56,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-08-30 11:48:56,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-08-30 11:48:56,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-08-30 11:48:56,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-08-30 11:48:56,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 11:48:56,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 11:48:56,501 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:48:56,505 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 11:48:56,505 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 11:48:56,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:48:56 BasicIcfg [2023-08-30 11:48:56,507 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 11:48:56,507 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 11:48:56,508 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 11:48:56,508 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 11:48:56,508 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:48:36" (3/4) ... [2023-08-30 11:48:56,510 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 11:48:56,515 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 11:48:56,515 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 11:48:56,515 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 11:48:56,519 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-08-30 11:48:56,520 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 11:48:56,520 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 11:48:56,520 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 11:48:56,557 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 11:48:56,557 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 11:48:56,558 INFO L158 Benchmark]: Toolchain (without parser) took 20872.16ms. Allocated memory was 92.3MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 71.8MB in the beginning and 872.7MB in the end (delta: -800.9MB). Peak memory consumption was 636.0MB. Max. memory is 16.1GB. [2023-08-30 11:48:56,558 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 65.0MB. Free memory is still 42.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 11:48:56,558 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.99ms. Allocated memory is still 92.3MB. Free memory was 71.6MB in the beginning and 59.8MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 11:48:56,558 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.72ms. Allocated memory is still 92.3MB. Free memory was 59.8MB in the beginning and 57.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 11:48:56,559 INFO L158 Benchmark]: Boogie Preprocessor took 55.74ms. Allocated memory is still 92.3MB. Free memory was 57.9MB in the beginning and 56.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 11:48:56,559 INFO L158 Benchmark]: RCFGBuilder took 501.94ms. Allocated memory is still 92.3MB. Free memory was 56.4MB in the beginning and 62.5MB in the end (delta: -6.1MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2023-08-30 11:48:56,561 INFO L158 Benchmark]: TraceAbstraction took 19929.01ms. Allocated memory was 92.3MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 61.6MB in the beginning and 876.9MB in the end (delta: -815.4MB). Peak memory consumption was 623.1MB. Max. memory is 16.1GB. [2023-08-30 11:48:56,561 INFO L158 Benchmark]: Witness Printer took 49.77ms. Allocated memory is still 1.5GB. Free memory was 876.9MB in the beginning and 872.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 11:48:56,562 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 65.0MB. Free memory is still 42.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.99ms. Allocated memory is still 92.3MB. Free memory was 71.6MB in the beginning and 59.8MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.72ms. Allocated memory is still 92.3MB. Free memory was 59.8MB in the beginning and 57.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.74ms. Allocated memory is still 92.3MB. Free memory was 57.9MB in the beginning and 56.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 501.94ms. Allocated memory is still 92.3MB. Free memory was 56.4MB in the beginning and 62.5MB in the end (delta: -6.1MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * TraceAbstraction took 19929.01ms. Allocated memory was 92.3MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 61.6MB in the beginning and 876.9MB in the end (delta: -815.4MB). Peak memory consumption was 623.1MB. Max. memory is 16.1GB. * Witness Printer took 49.77ms. Allocated memory is still 1.5GB. Free memory was 876.9MB in the beginning and 872.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.9s, 143 PlacesBefore, 36 PlacesAfterwards, 144 TransitionsBefore, 30 TransitionsAfterwards, 2688 CoEnabledTransitionPairs, 7 FixpointIterations, 73 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 6 ConcurrentYvCompositions, 7 ChoiceCompositions, 149 TotalNumberOfCompositions, 2954 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2784, independent: 2760, independent conditional: 0, independent unconditional: 2760, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1434, independent: 1425, independent conditional: 0, independent unconditional: 1425, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2784, independent: 1335, independent conditional: 0, independent unconditional: 1335, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 1434, unknown conditional: 0, unknown unconditional: 1434] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 65, Positive conditional cache size: 0, Positive unconditional cache size: 65, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 100]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 100]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 202 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.8s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 10.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1465 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1275 mSDsluCounter, 209 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 177 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1857 IncrementalHoareTripleChecker+Invalid, 1901 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 32 mSDtfsCounter, 1857 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=237occurred in iteration=11, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 149 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 142 ConstructedInterpolants, 0 QuantifiedInterpolants, 368 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1092 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 25 InterpolantComputations, 11 PerfectInterpolantSequences, 37/71 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 11:48:56,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE