./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-counter-fun.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-counter-fun.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 00b544e07f34285bd260f481b4b1205a15ed1c83d300c57496244de51f7f3936 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:05:33,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:05:33,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:05:33,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:05:33,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:05:33,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:05:33,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:05:33,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:05:33,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:05:33,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:05:33,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:05:33,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:05:33,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:05:33,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:05:33,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:05:33,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:05:33,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:05:33,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:05:33,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:05:33,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:05:33,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:05:33,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:05:33,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:05:33,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:05:33,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:05:33,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:05:33,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:05:33,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:05:33,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:05:33,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:05:33,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:05:33,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:05:33,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:05:33,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:05:33,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:05:33,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:05:33,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:05:33,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:05:33,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:05:33,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:05:33,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:05:33,969 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:05:34,002 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:05:34,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:05:34,004 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:05:34,004 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:05:34,005 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:05:34,005 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:05:34,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:05:34,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:05:34,007 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:05:34,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:05:34,008 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:05:34,008 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:05:34,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:05:34,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:05:34,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:05:34,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:05:34,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:05:34,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:05:34,009 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:05:34,009 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:05:34,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:05:34,010 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:05:34,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:05:34,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:05:34,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:05:34,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:05:34,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:05:34,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:05:34,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:05:34,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:05:34,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:05:34,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:05:34,012 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:05:34,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:05:34,012 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:05:34,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:05:34,013 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:05:34,013 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00b544e07f34285bd260f481b4b1205a15ed1c83d300c57496244de51f7f3936 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:05:34,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:05:34,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:05:34,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:05:34,357 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:05:34,358 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:05:34,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-counter-fun.wvr.c [2023-09-01 08:05:35,437 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:05:35,664 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:05:35,665 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-counter-fun.wvr.c [2023-09-01 08:05:35,671 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8588c0785/0963ac7c18e94a22b9863d2c837a384e/FLAG14c5a42d5 [2023-09-01 08:05:35,686 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8588c0785/0963ac7c18e94a22b9863d2c837a384e [2023-09-01 08:05:35,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:05:35,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:05:35,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:05:35,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:05:35,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:05:35,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:05:35" (1/1) ... [2023-09-01 08:05:35,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cd5ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:05:35, skipping insertion in model container [2023-09-01 08:05:35,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:05:35" (1/1) ... [2023-09-01 08:05:35,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:05:35,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:05:35,928 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-counter-fun.wvr.c[2681,2694] [2023-09-01 08:05:35,940 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:05:35,950 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:05:35,985 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-counter-fun.wvr.c[2681,2694] [2023-09-01 08:05:35,993 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:05:36,001 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:05:36,002 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:05:36,008 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:05:36,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:05:36 WrapperNode [2023-09-01 08:05:36,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:05:36,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:05:36,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:05:36,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:05:36,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:05:36" (1/1) ... [2023-09-01 08:05:36,041 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:05:36" (1/1) ... [2023-09-01 08:05:36,080 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 13, calls inlined = 15, statements flattened = 206 [2023-09-01 08:05:36,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:05:36,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:05:36,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:05:36,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:05:36,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:05:36" (1/1) ... [2023-09-01 08:05:36,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:05:36" (1/1) ... [2023-09-01 08:05:36,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:05:36" (1/1) ... [2023-09-01 08:05:36,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:05:36" (1/1) ... [2023-09-01 08:05:36,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:05:36" (1/1) ... [2023-09-01 08:05:36,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:05:36" (1/1) ... [2023-09-01 08:05:36,127 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:05:36" (1/1) ... [2023-09-01 08:05:36,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:05:36" (1/1) ... [2023-09-01 08:05:36,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:05:36,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:05:36,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:05:36,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:05:36,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:05:36" (1/1) ... [2023-09-01 08:05:36,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:05:36,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:05:36,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 08:05:36,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 08:05:36,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:05:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:05:36,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:05:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:05:36,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:05:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:05:36,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:05:36,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:05:36,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:05:36,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:05:36,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:05:36,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:05:36,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:05:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:05:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:05:36,210 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:05:36,338 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:05:36,340 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:05:36,765 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:05:37,044 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:05:37,044 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 08:05:37,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:05:37 BoogieIcfgContainer [2023-09-01 08:05:37,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:05:37,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:05:37,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:05:37,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:05:37,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:05:35" (1/3) ... [2023-09-01 08:05:37,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c40446a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:05:37, skipping insertion in model container [2023-09-01 08:05:37,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:05:36" (2/3) ... [2023-09-01 08:05:37,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c40446a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:05:37, skipping insertion in model container [2023-09-01 08:05:37,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:05:37" (3/3) ... [2023-09-01 08:05:37,056 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-fun.wvr.c [2023-09-01 08:05:37,063 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:05:37,071 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:05:37,072 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 08:05:37,072 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:05:37,149 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 08:05:37,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 169 transitions, 354 flow [2023-09-01 08:05:37,280 INFO L130 PetriNetUnfolder]: 13/167 cut-off events. [2023-09-01 08:05:37,280 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:05:37,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 167 events. 13/167 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 124 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 132. Up to 2 conditions per place. [2023-09-01 08:05:37,285 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 169 transitions, 354 flow [2023-09-01 08:05:37,296 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 151 transitions, 311 flow [2023-09-01 08:05:37,300 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:05:37,312 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 151 transitions, 311 flow [2023-09-01 08:05:37,317 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 151 transitions, 311 flow [2023-09-01 08:05:37,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 151 transitions, 311 flow [2023-09-01 08:05:37,371 INFO L130 PetriNetUnfolder]: 12/151 cut-off events. [2023-09-01 08:05:37,372 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 08:05:37,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 151 events. 12/151 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 121 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 132. Up to 2 conditions per place. [2023-09-01 08:05:37,376 INFO L119 LiptonReduction]: Number of co-enabled transitions 812 [2023-09-01 08:05:43,045 INFO L134 LiptonReduction]: Checked pairs total: 865 [2023-09-01 08:05:43,046 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-09-01 08:05:43,057 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:05:43,062 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;@1840291f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:05:43,062 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-09-01 08:05:43,065 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:05:43,065 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:05:43,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:43,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:05:43,066 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 08:05:43,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:43,070 INFO L85 PathProgramCache]: Analyzing trace with hash 25166, now seen corresponding path program 1 times [2023-09-01 08:05:43,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:43,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465799783] [2023-09-01 08:05:43,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:43,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:43,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:05:43,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:43,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465799783] [2023-09-01 08:05:43,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465799783] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:43,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:05:43,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:05:43,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16615750] [2023-09-01 08:05:43,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:43,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:05:43,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:43,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:05:43,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:05:43,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 331 [2023-09-01 08:05:43,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 59 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) [2023-09-01 08:05:43,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:43,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 331 [2023-09-01 08:05:43,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:43,519 INFO L130 PetriNetUnfolder]: 275/425 cut-off events. [2023-09-01 08:05:43,519 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 08:05:43,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 876 conditions, 425 events. 275/425 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 1725 event pairs, 124 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 362. Up to 210 conditions per place. [2023-09-01 08:05:43,523 INFO L137 encePairwiseOnDemand]: 323/331 looper letters, 37 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2023-09-01 08:05:43,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 43 transitions, 186 flow [2023-09-01 08:05:43,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:05:43,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:05:43,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2023-09-01 08:05:43,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48942598187311176 [2023-09-01 08:05:43,540 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 486 transitions. [2023-09-01 08:05:43,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 486 transitions. [2023-09-01 08:05:43,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:43,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 486 transitions. [2023-09-01 08:05:43,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:43,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:43,553 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:43,555 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 59 flow. Second operand 3 states and 486 transitions. [2023-09-01 08:05:43,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 43 transitions, 186 flow [2023-09-01 08:05:43,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 43 transitions, 176 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 08:05:43,560 INFO L231 Difference]: Finished difference. Result has 29 places, 28 transitions, 90 flow [2023-09-01 08:05:43,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=29, PETRI_TRANSITIONS=28} [2023-09-01 08:05:43,564 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2023-09-01 08:05:43,565 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 28 transitions, 90 flow [2023-09-01 08:05:43,565 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) [2023-09-01 08:05:43,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:43,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:05:43,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:05:43,566 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 08:05:43,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:43,567 INFO L85 PathProgramCache]: Analyzing trace with hash 780853, now seen corresponding path program 1 times [2023-09-01 08:05:43,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:43,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518854566] [2023-09-01 08:05:43,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:43,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:43,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:05:43,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:43,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518854566] [2023-09-01 08:05:43,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518854566] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:05:43,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570310039] [2023-09-01 08:05:43,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:43,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:43,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:05:43,713 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:05:43,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 08:05:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:43,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:05:43,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:05:43,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:05:43,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:05:43,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:05:43,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570310039] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:05:43,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:05:43,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:05:43,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603319677] [2023-09-01 08:05:43,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:05:43,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:05:43,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:43,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:05:43,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:05:43,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 331 [2023-09-01 08:05:43,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 90 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) [2023-09-01 08:05:43,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:43,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 331 [2023-09-01 08:05:43,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:44,299 INFO L130 PetriNetUnfolder]: 692/1061 cut-off events. [2023-09-01 08:05:44,300 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-09-01 08:05:44,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 1061 events. 692/1061 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5248 event pairs, 310 based on Foata normal form. 0/451 useless extension candidates. Maximal degree in co-relation 1703. Up to 208 conditions per place. [2023-09-01 08:05:44,306 INFO L137 encePairwiseOnDemand]: 323/331 looper letters, 80 selfloop transitions, 21 changer transitions 0/103 dead transitions. [2023-09-01 08:05:44,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 103 transitions, 494 flow [2023-09-01 08:05:44,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:05:44,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:05:44,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1136 transitions. [2023-09-01 08:05:44,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49028916702632713 [2023-09-01 08:05:44,311 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1136 transitions. [2023-09-01 08:05:44,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1136 transitions. [2023-09-01 08:05:44,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:44,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1136 transitions. [2023-09-01 08:05:44,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:44,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:44,320 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:44,320 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 90 flow. Second operand 7 states and 1136 transitions. [2023-09-01 08:05:44,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 103 transitions, 494 flow [2023-09-01 08:05:44,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 103 transitions, 480 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:05:44,323 INFO L231 Difference]: Finished difference. Result has 36 places, 43 transitions, 221 flow [2023-09-01 08:05:44,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=221, PETRI_PLACES=36, PETRI_TRANSITIONS=43} [2023-09-01 08:05:44,324 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 8 predicate places. [2023-09-01 08:05:44,324 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 43 transitions, 221 flow [2023-09-01 08:05:44,325 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) [2023-09-01 08:05:44,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:44,325 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-09-01 08:05:44,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 08:05:44,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:44,531 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 08:05:44,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:44,532 INFO L85 PathProgramCache]: Analyzing trace with hash 24207148, now seen corresponding path program 1 times [2023-09-01 08:05:44,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:44,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932979813] [2023-09-01 08:05:44,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:44,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:44,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:05:44,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:44,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932979813] [2023-09-01 08:05:44,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932979813] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:44,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:05:44,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:05:44,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454416214] [2023-09-01 08:05:44,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:44,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:05:44,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:44,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:05:44,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:05:44,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 331 [2023-09-01 08:05:44,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 43 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:44,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:44,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 331 [2023-09-01 08:05:44,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:44,760 INFO L130 PetriNetUnfolder]: 686/1053 cut-off events. [2023-09-01 08:05:44,760 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 08:05:44,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2186 conditions, 1053 events. 686/1053 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5173 event pairs, 310 based on Foata normal form. 2/453 useless extension candidates. Maximal degree in co-relation 1292. Up to 1023 conditions per place. [2023-09-01 08:05:44,767 INFO L137 encePairwiseOnDemand]: 328/331 looper letters, 32 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-09-01 08:05:44,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 233 flow [2023-09-01 08:05:44,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:05:44,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:05:44,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 464 transitions. [2023-09-01 08:05:44,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46727089627391744 [2023-09-01 08:05:44,769 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 464 transitions. [2023-09-01 08:05:44,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 464 transitions. [2023-09-01 08:05:44,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:44,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 464 transitions. [2023-09-01 08:05:44,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:44,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:44,774 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:44,774 INFO L175 Difference]: Start difference. First operand has 36 places, 43 transitions, 221 flow. Second operand 3 states and 464 transitions. [2023-09-01 08:05:44,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 233 flow [2023-09-01 08:05:44,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 214 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 08:05:44,776 INFO L231 Difference]: Finished difference. Result has 34 places, 35 transitions, 150 flow [2023-09-01 08:05:44,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=34, PETRI_TRANSITIONS=35} [2023-09-01 08:05:44,777 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2023-09-01 08:05:44,777 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 35 transitions, 150 flow [2023-09-01 08:05:44,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:44,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:44,778 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:05:44,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 08:05:44,779 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 08:05:44,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:44,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1788257294, now seen corresponding path program 2 times [2023-09-01 08:05:44,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:44,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987666849] [2023-09-01 08:05:44,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:44,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:44,904 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:05:44,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:44,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987666849] [2023-09-01 08:05:44,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987666849] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:05:44,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386172665] [2023-09-01 08:05:44,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:05:44,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:44,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:05:44,909 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:05:44,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 08:05:44,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:05:44,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:05:44,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:05:44,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:05:45,018 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:05:45,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:05:45,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386172665] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:45,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:05:45,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:05:45,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797755293] [2023-09-01 08:05:45,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:45,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:05:45,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:45,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:05:45,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:05:45,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 331 [2023-09-01 08:05:45,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 35 transitions, 150 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) [2023-09-01 08:05:45,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:45,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 331 [2023-09-01 08:05:45,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:45,186 INFO L130 PetriNetUnfolder]: 686/1052 cut-off events. [2023-09-01 08:05:45,187 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-09-01 08:05:45,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2171 conditions, 1052 events. 686/1052 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5198 event pairs, 310 based on Foata normal form. 1/452 useless extension candidates. Maximal degree in co-relation 2159. Up to 1017 conditions per place. [2023-09-01 08:05:45,193 INFO L137 encePairwiseOnDemand]: 328/331 looper letters, 26 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2023-09-01 08:05:45,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 34 transitions, 204 flow [2023-09-01 08:05:45,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:05:45,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:05:45,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 468 transitions. [2023-09-01 08:05:45,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47129909365558914 [2023-09-01 08:05:45,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 468 transitions. [2023-09-01 08:05:45,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 468 transitions. [2023-09-01 08:05:45,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:45,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 468 transitions. [2023-09-01 08:05:45,197 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) [2023-09-01 08:05:45,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:45,199 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:45,199 INFO L175 Difference]: Start difference. First operand has 34 places, 35 transitions, 150 flow. Second operand 3 states and 468 transitions. [2023-09-01 08:05:45,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 34 transitions, 204 flow [2023-09-01 08:05:45,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 203 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:05:45,201 INFO L231 Difference]: Finished difference. Result has 34 places, 34 transitions, 151 flow [2023-09-01 08:05:45,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=34, PETRI_TRANSITIONS=34} [2023-09-01 08:05:45,202 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2023-09-01 08:05:45,202 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 34 transitions, 151 flow [2023-09-01 08:05:45,203 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) [2023-09-01 08:05:45,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:45,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:05:45,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 08:05:45,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-09-01 08:05:45,409 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 08:05:45,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:45,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1805718030, now seen corresponding path program 1 times [2023-09-01 08:05:45,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:45,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480500342] [2023-09-01 08:05:45,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:45,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:45,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:05:45,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:45,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480500342] [2023-09-01 08:05:45,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480500342] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:45,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:05:45,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:05:45,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256307793] [2023-09-01 08:05:45,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:45,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:05:45,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:45,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:05:45,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:05:45,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-09-01 08:05:45,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 34 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:45,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:45,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-09-01 08:05:45,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:45,712 INFO L130 PetriNetUnfolder]: 911/1447 cut-off events. [2023-09-01 08:05:45,713 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2023-09-01 08:05:45,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3007 conditions, 1447 events. 911/1447 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 7816 event pairs, 230 based on Foata normal form. 0/697 useless extension candidates. Maximal degree in co-relation 2994. Up to 963 conditions per place. [2023-09-01 08:05:45,720 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 42 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-09-01 08:05:45,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 45 transitions, 264 flow [2023-09-01 08:05:45,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:05:45,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:05:45,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-09-01 08:05:45,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904330312185297 [2023-09-01 08:05:45,723 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-09-01 08:05:45,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-09-01 08:05:45,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:45,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-09-01 08:05:45,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:45,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:45,729 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:45,729 INFO L175 Difference]: Start difference. First operand has 34 places, 34 transitions, 151 flow. Second operand 3 states and 487 transitions. [2023-09-01 08:05:45,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 45 transitions, 264 flow [2023-09-01 08:05:45,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:05:45,734 INFO L231 Difference]: Finished difference. Result has 35 places, 35 transitions, 153 flow [2023-09-01 08:05:45,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=35, PETRI_TRANSITIONS=35} [2023-09-01 08:05:45,734 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 7 predicate places. [2023-09-01 08:05:45,735 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 35 transitions, 153 flow [2023-09-01 08:05:45,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:45,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:45,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:45,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 08:05:45,736 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 08:05:45,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:45,737 INFO L85 PathProgramCache]: Analyzing trace with hash 142684837, now seen corresponding path program 1 times [2023-09-01 08:05:45,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:45,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693124068] [2023-09-01 08:05:45,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:45,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:45,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:05:45,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:45,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693124068] [2023-09-01 08:05:45,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693124068] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:05:45,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021521642] [2023-09-01 08:05:45,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:45,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:45,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:05:45,824 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:05:45,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 08:05:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:45,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:05:45,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:05:45,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:05:45,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:05:45,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021521642] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:45,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:05:45,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2023-09-01 08:05:45,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167792642] [2023-09-01 08:05:45,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:45,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:05:45,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:45,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:05:45,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:05:45,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 331 [2023-09-01 08:05:45,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 35 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 144.5) internal successors, (578), 4 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:45,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:45,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 331 [2023-09-01 08:05:45,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:46,146 INFO L130 PetriNetUnfolder]: 611/1018 cut-off events. [2023-09-01 08:05:46,147 INFO L131 PetriNetUnfolder]: For 101/146 co-relation queries the response was YES. [2023-09-01 08:05:46,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2338 conditions, 1018 events. 611/1018 cut-off events. For 101/146 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 5463 event pairs, 353 based on Foata normal form. 51/644 useless extension candidates. Maximal degree in co-relation 2325. Up to 965 conditions per place. [2023-09-01 08:05:46,152 INFO L137 encePairwiseOnDemand]: 324/331 looper letters, 27 selfloop transitions, 6 changer transitions 9/44 dead transitions. [2023-09-01 08:05:46,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 44 transitions, 259 flow [2023-09-01 08:05:46,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:05:46,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:05:46,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 606 transitions. [2023-09-01 08:05:46,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45770392749244715 [2023-09-01 08:05:46,155 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 606 transitions. [2023-09-01 08:05:46,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 606 transitions. [2023-09-01 08:05:46,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:46,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 606 transitions. [2023-09-01 08:05:46,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:46,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:46,159 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:46,159 INFO L175 Difference]: Start difference. First operand has 35 places, 35 transitions, 153 flow. Second operand 4 states and 606 transitions. [2023-09-01 08:05:46,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 44 transitions, 259 flow [2023-09-01 08:05:46,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 44 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:05:46,161 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 179 flow [2023-09-01 08:05:46,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2023-09-01 08:05:46,162 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 11 predicate places. [2023-09-01 08:05:46,162 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 179 flow [2023-09-01 08:05:46,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.5) internal successors, (578), 4 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:46,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:46,163 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 08:05:46,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 08:05:46,369 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 [2023-09-01 08:05:46,369 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 08:05:46,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:46,370 INFO L85 PathProgramCache]: Analyzing trace with hash 151081669, now seen corresponding path program 1 times [2023-09-01 08:05:46,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:46,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337440645] [2023-09-01 08:05:46,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:46,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:05:46,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:46,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337440645] [2023-09-01 08:05:46,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337440645] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:05:46,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018422898] [2023-09-01 08:05:46,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:46,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:46,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:05:46,451 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:05:46,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 08:05:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:46,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 08:05:46,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:05:46,560 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:05:46,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:05:46,609 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:05:46,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018422898] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:05:46,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:05:46,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-09-01 08:05:46,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354969780] [2023-09-01 08:05:46,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:05:46,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:05:46,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:46,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:05:46,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:05:46,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 331 [2023-09-01 08:05:46,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 179 flow. Second operand has 13 states, 13 states have (on average 148.15384615384616) internal successors, (1926), 13 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:46,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:46,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 331 [2023-09-01 08:05:46,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:47,231 INFO L130 PetriNetUnfolder]: 1502/2465 cut-off events. [2023-09-01 08:05:47,231 INFO L131 PetriNetUnfolder]: For 608/708 co-relation queries the response was YES. [2023-09-01 08:05:47,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6508 conditions, 2465 events. 1502/2465 cut-off events. For 608/708 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 14433 event pairs, 860 based on Foata normal form. 106/1787 useless extension candidates. Maximal degree in co-relation 6493. Up to 951 conditions per place. [2023-09-01 08:05:47,246 INFO L137 encePairwiseOnDemand]: 326/331 looper letters, 164 selfloop transitions, 31 changer transitions 0/197 dead transitions. [2023-09-01 08:05:47,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 197 transitions, 1175 flow [2023-09-01 08:05:47,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 08:05:47,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 08:05:47,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1955 transitions. [2023-09-01 08:05:47,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921953675730111 [2023-09-01 08:05:47,252 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1955 transitions. [2023-09-01 08:05:47,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1955 transitions. [2023-09-01 08:05:47,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:47,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1955 transitions. [2023-09-01 08:05:47,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 162.91666666666666) internal successors, (1955), 12 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:47,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 331.0) internal successors, (4303), 13 states have internal predecessors, (4303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:47,264 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 331.0) internal successors, (4303), 13 states have internal predecessors, (4303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:47,264 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 179 flow. Second operand 12 states and 1955 transitions. [2023-09-01 08:05:47,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 197 transitions, 1175 flow [2023-09-01 08:05:47,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 197 transitions, 1161 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 08:05:47,270 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 393 flow [2023-09-01 08:05:47,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=393, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2023-09-01 08:05:47,271 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 26 predicate places. [2023-09-01 08:05:47,272 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 393 flow [2023-09-01 08:05:47,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 148.15384615384616) internal successors, (1926), 13 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:47,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:47,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:47,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 08:05:47,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:47,479 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 08:05:47,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:47,480 INFO L85 PathProgramCache]: Analyzing trace with hash 380168414, now seen corresponding path program 1 times [2023-09-01 08:05:47,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:47,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298626774] [2023-09-01 08:05:47,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:47,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:47,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:05:47,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:47,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298626774] [2023-09-01 08:05:47,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298626774] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:05:47,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805842269] [2023-09-01 08:05:47,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:47,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:47,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:05:47,545 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) [2023-09-01 08:05:47,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 08:05:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:47,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:05:47,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:05:47,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:05:47,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:05:47,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805842269] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:47,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:05:47,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-09-01 08:05:47,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587687095] [2023-09-01 08:05:47,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:47,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:05:47,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:47,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:05:47,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:05:47,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 331 [2023-09-01 08:05:47,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 393 flow. Second operand has 4 states, 4 states have (on average 144.75) internal successors, (579), 4 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:47,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:47,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 331 [2023-09-01 08:05:47,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:48,137 INFO L130 PetriNetUnfolder]: 1592/2767 cut-off events. [2023-09-01 08:05:48,138 INFO L131 PetriNetUnfolder]: For 855/1005 co-relation queries the response was YES. [2023-09-01 08:05:48,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7262 conditions, 2767 events. 1592/2767 cut-off events. For 855/1005 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 18016 event pairs, 950 based on Foata normal form. 270/2257 useless extension candidates. Maximal degree in co-relation 7240. Up to 2414 conditions per place. [2023-09-01 08:05:48,154 INFO L137 encePairwiseOnDemand]: 323/331 looper letters, 59 selfloop transitions, 4 changer transitions 9/74 dead transitions. [2023-09-01 08:05:48,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 74 transitions, 682 flow [2023-09-01 08:05:48,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:05:48,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:05:48,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 753 transitions. [2023-09-01 08:05:48,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45498489425981875 [2023-09-01 08:05:48,157 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 753 transitions. [2023-09-01 08:05:48,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 753 transitions. [2023-09-01 08:05:48,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:48,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 753 transitions. [2023-09-01 08:05:48,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.6) internal successors, (753), 5 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:48,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 331.0) internal successors, (1986), 6 states have internal predecessors, (1986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:48,162 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 331.0) internal successors, (1986), 6 states have internal predecessors, (1986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:48,162 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 393 flow. Second operand 5 states and 753 transitions. [2023-09-01 08:05:48,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 74 transitions, 682 flow [2023-09-01 08:05:48,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 74 transitions, 558 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-09-01 08:05:48,166 INFO L231 Difference]: Finished difference. Result has 55 places, 54 transitions, 330 flow [2023-09-01 08:05:48,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=330, PETRI_PLACES=55, PETRI_TRANSITIONS=54} [2023-09-01 08:05:48,167 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 27 predicate places. [2023-09-01 08:05:48,168 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 54 transitions, 330 flow [2023-09-01 08:05:48,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.75) internal successors, (579), 4 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:48,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:48,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:48,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 08:05:48,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:48,374 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 08:05:48,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:48,375 INFO L85 PathProgramCache]: Analyzing trace with hash -948787323, now seen corresponding path program 1 times [2023-09-01 08:05:48,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:48,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12379116] [2023-09-01 08:05:48,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:48,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:48,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:05:48,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:48,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12379116] [2023-09-01 08:05:48,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12379116] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:05:48,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025856298] [2023-09-01 08:05:48,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:48,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:48,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:05:48,427 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) [2023-09-01 08:05:48,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 08:05:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:48,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:05:48,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:05:48,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:05:48,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:05:48,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:05:48,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025856298] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:05:48,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:05:48,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 08:05:48,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146466167] [2023-09-01 08:05:48,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:05:48,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:05:48,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:48,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:05:48,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:05:48,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-09-01 08:05:48,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 54 transitions, 330 flow. Second operand has 7 states, 7 states have (on average 153.0) internal successors, (1071), 7 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:48,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:48,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-09-01 08:05:48,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:49,501 INFO L130 PetriNetUnfolder]: 4192/6537 cut-off events. [2023-09-01 08:05:49,501 INFO L131 PetriNetUnfolder]: For 2335/2335 co-relation queries the response was YES. [2023-09-01 08:05:49,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19328 conditions, 6537 events. 4192/6537 cut-off events. For 2335/2335 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 41903 event pairs, 420 based on Foata normal form. 0/4557 useless extension candidates. Maximal degree in co-relation 19304. Up to 2221 conditions per place. [2023-09-01 08:05:49,548 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 97 selfloop transitions, 9 changer transitions 0/107 dead transitions. [2023-09-01 08:05:49,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 107 transitions, 734 flow [2023-09-01 08:05:49,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:05:49,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:05:49,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1135 transitions. [2023-09-01 08:05:49,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48985757444971945 [2023-09-01 08:05:49,552 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1135 transitions. [2023-09-01 08:05:49,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1135 transitions. [2023-09-01 08:05:49,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:49,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1135 transitions. [2023-09-01 08:05:49,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 162.14285714285714) internal successors, (1135), 7 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:49,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:49,559 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:49,560 INFO L175 Difference]: Start difference. First operand has 55 places, 54 transitions, 330 flow. Second operand 7 states and 1135 transitions. [2023-09-01 08:05:49,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 107 transitions, 734 flow [2023-09-01 08:05:49,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 107 transitions, 676 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-09-01 08:05:49,567 INFO L231 Difference]: Finished difference. Result has 61 places, 60 transitions, 361 flow [2023-09-01 08:05:49,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=361, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2023-09-01 08:05:49,568 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 33 predicate places. [2023-09-01 08:05:49,568 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 361 flow [2023-09-01 08:05:49,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 153.0) internal successors, (1071), 7 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:49,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:49,569 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:49,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 08:05:49,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:49,776 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 08:05:49,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:49,777 INFO L85 PathProgramCache]: Analyzing trace with hash 652364777, now seen corresponding path program 1 times [2023-09-01 08:05:49,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:49,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168182282] [2023-09-01 08:05:49,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:49,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:49,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:49,851 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:05:49,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:49,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168182282] [2023-09-01 08:05:49,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168182282] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:05:49,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91402287] [2023-09-01 08:05:49,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:49,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:49,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:05:49,853 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) [2023-09-01 08:05:49,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 08:05:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:49,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 08:05:49,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:05:49,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:05:49,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:05:49,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91402287] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:49,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:05:49,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-09-01 08:05:49,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970660904] [2023-09-01 08:05:49,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:49,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:05:49,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:49,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:05:49,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:05:49,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-09-01 08:05:49,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 361 flow. Second operand has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:49,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:49,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-09-01 08:05:49,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:50,825 INFO L130 PetriNetUnfolder]: 3682/5907 cut-off events. [2023-09-01 08:05:50,825 INFO L131 PetriNetUnfolder]: For 1447/1447 co-relation queries the response was YES. [2023-09-01 08:05:50,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16776 conditions, 5907 events. 3682/5907 cut-off events. For 1447/1447 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 39576 event pairs, 50 based on Foata normal form. 240/4807 useless extension candidates. Maximal degree in co-relation 16751. Up to 3350 conditions per place. [2023-09-01 08:05:50,861 INFO L137 encePairwiseOnDemand]: 328/331 looper letters, 79 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2023-09-01 08:05:50,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 83 transitions, 578 flow [2023-09-01 08:05:50,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:05:50,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:05:50,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 806 transitions. [2023-09-01 08:05:50,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48700906344410877 [2023-09-01 08:05:50,864 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 806 transitions. [2023-09-01 08:05:50,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 806 transitions. [2023-09-01 08:05:50,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:50,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 806 transitions. [2023-09-01 08:05:50,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 161.2) internal successors, (806), 5 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:50,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 331.0) internal successors, (1986), 6 states have internal predecessors, (1986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:50,869 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 331.0) internal successors, (1986), 6 states have internal predecessors, (1986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:50,869 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 361 flow. Second operand 5 states and 806 transitions. [2023-09-01 08:05:50,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 83 transitions, 578 flow [2023-09-01 08:05:50,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 83 transitions, 570 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 08:05:50,890 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 332 flow [2023-09-01 08:05:50,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=332, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2023-09-01 08:05:50,891 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 34 predicate places. [2023-09-01 08:05:50,891 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 332 flow [2023-09-01 08:05:50,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:50,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:50,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:50,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 08:05:51,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:51,097 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 08:05:51,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:51,098 INFO L85 PathProgramCache]: Analyzing trace with hash 657119057, now seen corresponding path program 1 times [2023-09-01 08:05:51,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:51,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991179256] [2023-09-01 08:05:51,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:51,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:51,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:05:51,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:51,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991179256] [2023-09-01 08:05:51,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991179256] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:51,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:05:51,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:05:51,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030968673] [2023-09-01 08:05:51,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:51,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:05:51,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:51,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:05:51,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:05:51,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-09-01 08:05:51,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:51,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:51,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-09-01 08:05:51,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:51,789 INFO L130 PetriNetUnfolder]: 3402/6157 cut-off events. [2023-09-01 08:05:51,789 INFO L131 PetriNetUnfolder]: For 4307/4707 co-relation queries the response was YES. [2023-09-01 08:05:51,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16767 conditions, 6157 events. 3402/6157 cut-off events. For 4307/4707 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 44567 event pairs, 1970 based on Foata normal form. 400/5887 useless extension candidates. Maximal degree in co-relation 16741. Up to 4398 conditions per place. [2023-09-01 08:05:51,833 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 65 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-09-01 08:05:51,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 68 transitions, 526 flow [2023-09-01 08:05:51,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:05:51,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:05:51,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2023-09-01 08:05:51,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.486404833836858 [2023-09-01 08:05:51,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2023-09-01 08:05:51,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2023-09-01 08:05:51,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:51,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2023-09-01 08:05:51,837 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) [2023-09-01 08:05:51,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:51,839 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:51,839 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 332 flow. Second operand 3 states and 483 transitions. [2023-09-01 08:05:51,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 68 transitions, 526 flow [2023-09-01 08:05:51,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 68 transitions, 518 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 08:05:51,848 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 343 flow [2023-09-01 08:05:51,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=343, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2023-09-01 08:05:51,849 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 34 predicate places. [2023-09-01 08:05:51,849 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 343 flow [2023-09-01 08:05:51,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:51,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:51,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:51,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 08:05:51,850 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 08:05:51,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:51,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1104144534, now seen corresponding path program 1 times [2023-09-01 08:05:51,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:51,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734288745] [2023-09-01 08:05:51,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:51,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:51,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:05:51,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:51,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734288745] [2023-09-01 08:05:51,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734288745] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:05:51,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138824117] [2023-09-01 08:05:51,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:51,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:51,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:05:51,900 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) [2023-09-01 08:05:51,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 08:05:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:52,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:05:52,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:05:52,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:05:52,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:05:52,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:05:52,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138824117] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:05:52,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:05:52,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 08:05:52,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119331537] [2023-09-01 08:05:52,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:05:52,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:05:52,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:52,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:05:52,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:05:52,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-09-01 08:05:52,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 343 flow. Second operand has 7 states, 7 states have (on average 153.28571428571428) internal successors, (1073), 7 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:52,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:52,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-09-01 08:05:52,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:53,510 INFO L130 PetriNetUnfolder]: 6942/11617 cut-off events. [2023-09-01 08:05:53,510 INFO L131 PetriNetUnfolder]: For 8927/9607 co-relation queries the response was YES. [2023-09-01 08:05:53,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35248 conditions, 11617 events. 6942/11617 cut-off events. For 8927/9607 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 83567 event pairs, 1560 based on Foata normal form. 680/10697 useless extension candidates. Maximal degree in co-relation 35221. Up to 3648 conditions per place. [2023-09-01 08:05:53,587 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 107 selfloop transitions, 9 changer transitions 0/117 dead transitions. [2023-09-01 08:05:53,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 117 transitions, 874 flow [2023-09-01 08:05:53,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:05:53,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:05:53,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1121 transitions. [2023-09-01 08:05:53,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4838152783772119 [2023-09-01 08:05:53,591 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1121 transitions. [2023-09-01 08:05:53,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1121 transitions. [2023-09-01 08:05:53,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:53,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1121 transitions. [2023-09-01 08:05:53,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 160.14285714285714) internal successors, (1121), 7 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:53,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:53,598 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:53,598 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 343 flow. Second operand 7 states and 1121 transitions. [2023-09-01 08:05:53,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 117 transitions, 874 flow [2023-09-01 08:05:53,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 117 transitions, 872 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:05:53,621 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 412 flow [2023-09-01 08:05:53,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=412, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2023-09-01 08:05:53,621 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 42 predicate places. [2023-09-01 08:05:53,622 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 412 flow [2023-09-01 08:05:53,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 153.28571428571428) internal successors, (1073), 7 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:53,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:53,622 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:53,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 08:05:53,828 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,SelfDestructingSolverStorable11 [2023-09-01 08:05:53,828 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 08:05:53,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:53,829 INFO L85 PathProgramCache]: Analyzing trace with hash 131258979, now seen corresponding path program 1 times [2023-09-01 08:05:53,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:53,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566208980] [2023-09-01 08:05:53,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:53,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:53,874 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:05:53,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:53,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566208980] [2023-09-01 08:05:53,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566208980] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:53,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:05:53,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:05:53,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967360617] [2023-09-01 08:05:53,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:53,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:05:53,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:53,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:05:53,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:05:53,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-09-01 08:05:53,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:53,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:53,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-09-01 08:05:53,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:54,710 INFO L130 PetriNetUnfolder]: 5552/9907 cut-off events. [2023-09-01 08:05:54,711 INFO L131 PetriNetUnfolder]: For 8497/9137 co-relation queries the response was YES. [2023-09-01 08:05:54,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32531 conditions, 9907 events. 5552/9907 cut-off events. For 8497/9137 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 76108 event pairs, 330 based on Foata normal form. 1280/11187 useless extension candidates. Maximal degree in co-relation 32501. Up to 8810 conditions per place. [2023-09-01 08:05:54,759 INFO L137 encePairwiseOnDemand]: 329/331 looper letters, 67 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2023-09-01 08:05:54,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 564 flow [2023-09-01 08:05:54,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:05:54,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:05:54,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2023-09-01 08:05:54,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823766364551863 [2023-09-01 08:05:54,762 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 479 transitions. [2023-09-01 08:05:54,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 479 transitions. [2023-09-01 08:05:54,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:54,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 479 transitions. [2023-09-01 08:05:54,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:54,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:54,766 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:54,766 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 412 flow. Second operand 3 states and 479 transitions. [2023-09-01 08:05:54,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 564 flow [2023-09-01 08:05:54,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 556 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 08:05:54,850 INFO L231 Difference]: Finished difference. Result has 69 places, 59 transitions, 371 flow [2023-09-01 08:05:54,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=371, PETRI_PLACES=69, PETRI_TRANSITIONS=59} [2023-09-01 08:05:54,851 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 41 predicate places. [2023-09-01 08:05:54,851 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 59 transitions, 371 flow [2023-09-01 08:05:54,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:54,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:54,852 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:54,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 08:05:54,852 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 08:05:54,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:54,853 INFO L85 PathProgramCache]: Analyzing trace with hash -142614802, now seen corresponding path program 2 times [2023-09-01 08:05:54,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:54,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268657887] [2023-09-01 08:05:54,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:54,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:54,958 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:05:54,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:54,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268657887] [2023-09-01 08:05:54,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268657887] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:05:54,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547090718] [2023-09-01 08:05:54,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:05:54,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:54,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:05:54,961 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:05:54,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 08:05:55,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:05:55,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:05:55,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:05:55,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:05:55,085 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-09-01 08:05:55,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:05:55,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547090718] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:55,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:05:55,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-09-01 08:05:55,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036687972] [2023-09-01 08:05:55,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:55,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:05:55,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:55,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:05:55,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:05:55,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-09-01 08:05:55,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 59 transitions, 371 flow. Second operand has 3 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) [2023-09-01 08:05:55,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:55,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-09-01 08:05:55,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:55,750 INFO L130 PetriNetUnfolder]: 4312/7807 cut-off events. [2023-09-01 08:05:55,751 INFO L131 PetriNetUnfolder]: For 10197/11157 co-relation queries the response was YES. [2023-09-01 08:05:55,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23232 conditions, 7807 events. 4312/7807 cut-off events. For 10197/11157 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 59818 event pairs, 3780 based on Foata normal form. 1480/9187 useless extension candidates. Maximal degree in co-relation 23201. Up to 7727 conditions per place. [2023-09-01 08:05:55,770 INFO L137 encePairwiseOnDemand]: 328/331 looper letters, 35 selfloop transitions, 1 changer transitions 21/57 dead transitions. [2023-09-01 08:05:55,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 57 transitions, 459 flow [2023-09-01 08:05:55,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:05:55,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:05:55,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2023-09-01 08:05:55,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4743202416918429 [2023-09-01 08:05:55,772 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2023-09-01 08:05:55,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2023-09-01 08:05:55,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:55,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2023-09-01 08:05:55,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:55,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:55,776 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:55,776 INFO L175 Difference]: Start difference. First operand has 69 places, 59 transitions, 371 flow. Second operand 3 states and 471 transitions. [2023-09-01 08:05:55,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 57 transitions, 459 flow [2023-09-01 08:05:55,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 438 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-09-01 08:05:55,808 INFO L231 Difference]: Finished difference. Result has 60 places, 36 transitions, 244 flow [2023-09-01 08:05:55,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=60, PETRI_TRANSITIONS=36} [2023-09-01 08:05:55,809 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 32 predicate places. [2023-09-01 08:05:55,809 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 36 transitions, 244 flow [2023-09-01 08:05:55,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-09-01 08:05:55,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:55,810 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-09-01 08:05:55,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-09-01 08:05:56,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-09-01 08:05:56,015 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 08:05:56,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:56,016 INFO L85 PathProgramCache]: Analyzing trace with hash -2141728731, now seen corresponding path program 2 times [2023-09-01 08:05:56,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:56,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903015630] [2023-09-01 08:05:56,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:56,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:56,228 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:05:56,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:56,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903015630] [2023-09-01 08:05:56,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903015630] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:05:56,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829155142] [2023-09-01 08:05:56,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:05:56,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:56,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:05:56,233 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:05:56,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 08:05:56,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:05:56,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:05:56,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:05:56,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:05:56,381 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-09-01 08:05:56,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:05:56,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829155142] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:56,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:05:56,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-09-01 08:05:56,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818903737] [2023-09-01 08:05:56,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:56,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:05:56,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:56,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:05:56,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-09-01 08:05:56,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 331 [2023-09-01 08:05:56,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 36 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:56,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:56,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 331 [2023-09-01 08:05:56,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:56,454 INFO L130 PetriNetUnfolder]: 12/45 cut-off events. [2023-09-01 08:05:56,454 INFO L131 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2023-09-01 08:05:56,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 45 events. 12/45 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 69 event pairs, 0 based on Foata normal form. 2/47 useless extension candidates. Maximal degree in co-relation 182. Up to 45 conditions per place. [2023-09-01 08:05:56,455 INFO L137 encePairwiseOnDemand]: 329/331 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2023-09-01 08:05:56,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 35 transitions, 292 flow [2023-09-01 08:05:56,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:05:56,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:05:56,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-09-01 08:05:56,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44914400805639476 [2023-09-01 08:05:56,457 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-09-01 08:05:56,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-09-01 08:05:56,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:56,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-09-01 08:05:56,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:56,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:56,461 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:56,461 INFO L175 Difference]: Start difference. First operand has 60 places, 36 transitions, 244 flow. Second operand 3 states and 446 transitions. [2023-09-01 08:05:56,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 35 transitions, 292 flow [2023-09-01 08:05:56,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 35 transitions, 213 flow, removed 2 selfloop flow, removed 13 redundant places. [2023-09-01 08:05:56,463 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2023-09-01 08:05:56,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2023-09-01 08:05:56,464 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -4 predicate places. [2023-09-01 08:05:56,464 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2023-09-01 08:05:56,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:56,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2023-09-01 08:05:56,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2023-09-01 08:05:56,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2023-09-01 08:05:56,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2023-09-01 08:05:56,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2023-09-01 08:05:56,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2023-09-01 08:05:56,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2023-09-01 08:05:56,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2023-09-01 08:05:56,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2023-09-01 08:05:56,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2023-09-01 08:05:56,469 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2023-09-01 08:05:56,469 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2023-09-01 08:05:56,469 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2023-09-01 08:05:56,469 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2023-09-01 08:05:56,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 08:05:56,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 08:05:56,675 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:56,679 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 08:05:56,679 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 08:05:56,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 08:05:56 BasicIcfg [2023-09-01 08:05:56,682 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 08:05:56,683 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 08:05:56,683 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 08:05:56,683 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 08:05:56,683 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:05:37" (3/4) ... [2023-09-01 08:05:56,685 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 08:05:56,690 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 08:05:56,690 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 08:05:56,695 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-09-01 08:05:56,696 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 08:05:56,696 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 08:05:56,696 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 08:05:56,739 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 08:05:56,739 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 08:05:56,740 INFO L158 Benchmark]: Toolchain (without parser) took 21050.93ms. Allocated memory was 75.5MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 53.2MB in the beginning and 961.3MB in the end (delta: -908.1MB). Peak memory consumption was 238.6MB. Max. memory is 16.1GB. [2023-09-01 08:05:56,740 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 58.7MB. Free memory is still 36.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 08:05:56,740 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.33ms. Allocated memory is still 75.5MB. Free memory was 53.0MB in the beginning and 41.5MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 08:05:56,740 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.69ms. Allocated memory is still 75.5MB. Free memory was 41.5MB in the beginning and 39.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:05:56,741 INFO L158 Benchmark]: Boogie Preprocessor took 55.20ms. Allocated memory is still 75.5MB. Free memory was 39.2MB in the beginning and 37.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:05:56,741 INFO L158 Benchmark]: RCFGBuilder took 908.18ms. Allocated memory is still 75.5MB. Free memory was 37.4MB in the beginning and 49.8MB in the end (delta: -12.4MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2023-09-01 08:05:56,741 INFO L158 Benchmark]: TraceAbstraction took 19632.41ms. Allocated memory was 75.5MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 49.3MB in the beginning and 964.4MB in the end (delta: -915.1MB). Peak memory consumption was 228.2MB. Max. memory is 16.1GB. [2023-09-01 08:05:56,741 INFO L158 Benchmark]: Witness Printer took 56.13ms. Allocated memory is still 1.2GB. Free memory was 964.4MB in the beginning and 961.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 08:05:56,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 58.7MB. Free memory is still 36.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 319.33ms. Allocated memory is still 75.5MB. Free memory was 53.0MB in the beginning and 41.5MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.69ms. Allocated memory is still 75.5MB. Free memory was 41.5MB in the beginning and 39.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.20ms. Allocated memory is still 75.5MB. Free memory was 39.2MB in the beginning and 37.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 908.18ms. Allocated memory is still 75.5MB. Free memory was 37.4MB in the beginning and 49.8MB in the end (delta: -12.4MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * TraceAbstraction took 19632.41ms. Allocated memory was 75.5MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 49.3MB in the beginning and 964.4MB in the end (delta: -915.1MB). Peak memory consumption was 228.2MB. Max. memory is 16.1GB. * Witness Printer took 56.13ms. Allocated memory is still 1.2GB. Free memory was 964.4MB in the beginning and 961.3MB in the end (delta: 3.1MB). 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: 5.7s, 146 PlacesBefore, 28 PlacesAfterwards, 151 TransitionsBefore, 25 TransitionsAfterwards, 812 CoEnabledTransitionPairs, 7 FixpointIterations, 103 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 19 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 162 TotalNumberOfCompositions, 865 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 773, independent: 758, independent conditional: 0, independent unconditional: 758, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 427, independent: 420, independent conditional: 0, independent unconditional: 420, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 773, independent: 338, independent conditional: 0, independent unconditional: 338, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 427, unknown conditional: 0, unknown unconditional: 427] , Statistics on independence cache: Total cache size (in pairs): 23, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: 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 5 procedures, 185 locations, 14 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: 19.5s, OverallIterations: 15, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1135 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 855 mSDsluCounter, 117 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 102 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1635 IncrementalHoareTripleChecker+Invalid, 1737 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 102 mSolverCounterUnsat, 97 mSDtfsCounter, 1635 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=412occurred in iteration=12, InterpolantAutomatonStates: 71, 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, 0.4s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 206 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 207 ConstructedInterpolants, 0 QuantifiedInterpolants, 456 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1594 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 29 InterpolantComputations, 11 PerfectInterpolantSequences, 113/231 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! [2023-09-01 08:05:56,762 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