./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-dec-subseq.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-more-dec-subseq.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 ecda181bd3fe1882667151a04232fb9d04292dd6ca3491d98fdc8de5d539856a --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 08:18:34,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:18:34,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:18:34,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:18:34,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:18:34,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:18:34,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:18:34,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:18:34,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:18:34,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:18:34,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:18:34,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:18:34,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:18:34,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:18:34,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:18:34,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:18:34,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:18:34,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:18:34,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:18:34,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:18:34,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:18:34,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:18:34,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:18:34,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:18:34,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:18:34,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:18:34,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:18:34,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:18:34,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:18:34,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:18:34,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:18:34,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:18:34,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:18:34,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:18:34,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:18:34,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:18:34,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:18:34,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:18:34,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:18:34,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:18:34,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:18:34,923 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:18:34,958 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:18:34,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:18:34,959 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:18:34,960 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:18:34,960 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:18:34,961 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:18:34,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:18:34,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:18:34,962 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:18:34,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:18:34,963 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:18:34,963 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:18:34,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:18:34,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:18:34,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:18:34,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:18:34,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:18:34,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:18:34,964 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:18:34,964 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:18:34,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:18:34,965 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:18:34,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:18:34,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:18:34,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:18:34,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:18:34,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:18:34,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:18:34,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:18:34,966 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:18:34,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:18:34,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:18:34,967 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:18:34,967 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:18:34,967 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:18:34,968 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:18:34,968 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:18:34,968 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecda181bd3fe1882667151a04232fb9d04292dd6ca3491d98fdc8de5d539856a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:18:35,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:18:35,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:18:35,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:18:35,317 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:18:35,317 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:18:35,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c [2023-09-01 08:18:36,594 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:18:36,825 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:18:36,826 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c [2023-09-01 08:18:36,835 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a26f2ba14/3b3c6bb007584174ae85a72f93fdc0fb/FLAG40a6bfa76 [2023-09-01 08:18:36,861 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a26f2ba14/3b3c6bb007584174ae85a72f93fdc0fb [2023-09-01 08:18:36,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:18:36,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:18:36,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:18:36,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:18:36,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:18:36,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:18:36" (1/1) ... [2023-09-01 08:18:36,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12f872fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:18:36, skipping insertion in model container [2023-09-01 08:18:36,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:18:36" (1/1) ... [2023-09-01 08:18:36,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:18:36,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:18:37,093 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c[2924,2937] [2023-09-01 08:18:37,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:18:37,110 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:18:37,135 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c[2924,2937] [2023-09-01 08:18:37,138 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:18:37,146 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:18:37,147 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:18:37,152 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:18:37,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:18:37 WrapperNode [2023-09-01 08:18:37,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:18:37,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:18:37,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:18:37,154 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:18:37,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:18:37" (1/1) ... [2023-09-01 08:18:37,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:18:37" (1/1) ... [2023-09-01 08:18:37,193 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 206 [2023-09-01 08:18:37,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:18:37,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:18:37,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:18:37,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:18:37,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:18:37" (1/1) ... [2023-09-01 08:18:37,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:18:37" (1/1) ... [2023-09-01 08:18:37,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:18:37" (1/1) ... [2023-09-01 08:18:37,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:18:37" (1/1) ... [2023-09-01 08:18:37,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:18:37" (1/1) ... [2023-09-01 08:18:37,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:18:37" (1/1) ... [2023-09-01 08:18:37,220 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:18:37" (1/1) ... [2023-09-01 08:18:37,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:18:37" (1/1) ... [2023-09-01 08:18:37,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:18:37,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:18:37,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:18:37,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:18:37,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:18:37" (1/1) ... [2023-09-01 08:18:37,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:18:37,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:18:37,263 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 08:18:37,288 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 08:18:37,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:18:37,311 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:18:37,311 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:18:37,311 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:18:37,312 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:18:37,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:18:37,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:18:37,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:18:37,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:18:37,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:18:37,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:18:37,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:18:37,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:18:37,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:18:37,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:18:37,315 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 08:18:37,406 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:18:37,408 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:18:37,914 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:18:38,057 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:18:38,058 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 08:18:38,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:18:38 BoogieIcfgContainer [2023-09-01 08:18:38,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:18:38,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:18:38,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:18:38,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:18:38,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:18:36" (1/3) ... [2023-09-01 08:18:38,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea9f2ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:18:38, skipping insertion in model container [2023-09-01 08:18:38,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:18:37" (2/3) ... [2023-09-01 08:18:38,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea9f2ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:18:38, skipping insertion in model container [2023-09-01 08:18:38,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:18:38" (3/3) ... [2023-09-01 08:18:38,069 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-dec-subseq.wvr.c [2023-09-01 08:18:38,076 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:18:38,084 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:18:38,084 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-09-01 08:18:38,084 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:18:38,140 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 08:18:38,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 190 transitions, 396 flow [2023-09-01 08:18:38,266 INFO L130 PetriNetUnfolder]: 15/188 cut-off events. [2023-09-01 08:18:38,268 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:18:38,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 188 events. 15/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 160 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 155. Up to 2 conditions per place. [2023-09-01 08:18:38,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 190 transitions, 396 flow [2023-09-01 08:18:38,284 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 172 transitions, 353 flow [2023-09-01 08:18:38,287 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:18:38,296 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 165 places, 172 transitions, 353 flow [2023-09-01 08:18:38,302 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 165 places, 172 transitions, 353 flow [2023-09-01 08:18:38,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 172 transitions, 353 flow [2023-09-01 08:18:38,367 INFO L130 PetriNetUnfolder]: 14/172 cut-off events. [2023-09-01 08:18:38,368 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 08:18:38,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 172 events. 14/172 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 158 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 155. Up to 2 conditions per place. [2023-09-01 08:18:38,372 INFO L119 LiptonReduction]: Number of co-enabled transitions 942 [2023-09-01 08:18:43,706 INFO L134 LiptonReduction]: Checked pairs total: 1454 [2023-09-01 08:18:43,707 INFO L136 LiptonReduction]: Total number of compositions: 180 [2023-09-01 08:18:43,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:18:43,727 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;@3cae87cb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:18:43,727 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-09-01 08:18:43,731 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:18:43,731 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:18:43,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:18:43,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:18:43,732 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:18:43,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:18:43,737 INFO L85 PathProgramCache]: Analyzing trace with hash 25153, now seen corresponding path program 1 times [2023-09-01 08:18:43,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:18:43,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75535565] [2023-09-01 08:18:43,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:43,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:18:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:43,966 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 08:18:43,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:18:43,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75535565] [2023-09-01 08:18:43,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75535565] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:18:43,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:18:43,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:18:43,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292625985] [2023-09-01 08:18:43,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:18:43,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:18:43,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:18:43,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:18:43,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:18:44,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 370 [2023-09-01 08:18:44,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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 08:18:44,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:18:44,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 370 [2023-09-01 08:18:44,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:18:44,145 INFO L130 PetriNetUnfolder]: 177/288 cut-off events. [2023-09-01 08:18:44,145 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-09-01 08:18:44,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 288 events. 177/288 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1087 event pairs, 106 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 524. Up to 284 conditions per place. [2023-09-01 08:18:44,150 INFO L137 encePairwiseOnDemand]: 365/370 looper letters, 25 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-09-01 08:18:44,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 27 transitions, 115 flow [2023-09-01 08:18:44,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:18:44,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:18:44,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2023-09-01 08:18:44,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2023-09-01 08:18:44,177 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 510 transitions. [2023-09-01 08:18:44,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 510 transitions. [2023-09-01 08:18:44,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:18:44,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 510 transitions. [2023-09-01 08:18:44,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 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 08:18:44,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 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 08:18:44,194 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 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 08:18:44,196 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 71 flow. Second operand 3 states and 510 transitions. [2023-09-01 08:18:44,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 27 transitions, 115 flow [2023-09-01 08:18:44,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 110 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 08:18:44,202 INFO L231 Difference]: Finished difference. Result has 28 places, 27 transitions, 60 flow [2023-09-01 08:18:44,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=28, PETRI_TRANSITIONS=27} [2023-09-01 08:18:44,208 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -5 predicate places. [2023-09-01 08:18:44,208 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 60 flow [2023-09-01 08:18:44,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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 08:18:44,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:18:44,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:18:44,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:18:44,210 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:18:44,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:18:44,211 INFO L85 PathProgramCache]: Analyzing trace with hash 25172, now seen corresponding path program 1 times [2023-09-01 08:18:44,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:18:44,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218161819] [2023-09-01 08:18:44,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:44,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:18:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:44,271 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 08:18:44,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:18:44,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218161819] [2023-09-01 08:18:44,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218161819] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:18:44,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:18:44,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:18:44,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023235492] [2023-09-01 08:18:44,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:18:44,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:18:44,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:18:44,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:18:44,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:18:44,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 370 [2023-09-01 08:18:44,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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 08:18:44,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:18:44,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 370 [2023-09-01 08:18:44,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:18:44,432 INFO L130 PetriNetUnfolder]: 353/573 cut-off events. [2023-09-01 08:18:44,432 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:18:44,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1176 conditions, 573 events. 353/573 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 2585 event pairs, 212 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 1170. Up to 285 conditions per place. [2023-09-01 08:18:44,436 INFO L137 encePairwiseOnDemand]: 364/370 looper letters, 45 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2023-09-01 08:18:44,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 50 transitions, 208 flow [2023-09-01 08:18:44,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:18:44,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:18:44,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2023-09-01 08:18:44,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2023-09-01 08:18:44,438 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2023-09-01 08:18:44,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2023-09-01 08:18:44,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:18:44,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2023-09-01 08:18:44,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 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 08:18:44,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 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 08:18:44,443 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 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 08:18:44,443 INFO L175 Difference]: Start difference. First operand has 28 places, 27 transitions, 60 flow. Second operand 3 states and 531 transitions. [2023-09-01 08:18:44,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 50 transitions, 208 flow [2023-09-01 08:18:44,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 50 transitions, 207 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:18:44,444 INFO L231 Difference]: Finished difference. Result has 31 places, 30 transitions, 91 flow [2023-09-01 08:18:44,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=31, PETRI_TRANSITIONS=30} [2023-09-01 08:18:44,445 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2023-09-01 08:18:44,445 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 91 flow [2023-09-01 08:18:44,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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 08:18:44,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:18:44,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:18:44,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 08:18:44,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:18:44,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:18:44,447 INFO L85 PathProgramCache]: Analyzing trace with hash 781045, now seen corresponding path program 1 times [2023-09-01 08:18:44,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:18:44,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313122614] [2023-09-01 08:18:44,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:44,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:18:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:44,509 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 08:18:44,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:18:44,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313122614] [2023-09-01 08:18:44,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313122614] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:18:44,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152323510] [2023-09-01 08:18:44,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:44,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:18:44,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:18:44,513 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 08:18:44,541 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 08:18:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:44,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:18:44,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:18:44,635 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 08:18:44,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:18:44,667 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 08:18:44,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152323510] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:18:44,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:18:44,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-09-01 08:18:44,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721960545] [2023-09-01 08:18:44,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:18:44,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 08:18:44,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:18:44,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 08:18:44,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:18:44,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 370 [2023-09-01 08:18:44,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 91 flow. Second operand has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 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 08:18:44,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:18:44,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 370 [2023-09-01 08:18:44,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:18:45,007 INFO L130 PetriNetUnfolder]: 881/1428 cut-off events. [2023-09-01 08:18:45,007 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-09-01 08:18:45,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2951 conditions, 1428 events. 881/1428 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7443 event pairs, 530 based on Foata normal form. 0/827 useless extension candidates. Maximal degree in co-relation 2942. Up to 285 conditions per place. [2023-09-01 08:18:45,017 INFO L137 encePairwiseOnDemand]: 364/370 looper letters, 105 selfloop transitions, 13 changer transitions 0/119 dead transitions. [2023-09-01 08:18:45,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 119 transitions, 545 flow [2023-09-01 08:18:45,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:18:45,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:18:45,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1084 transitions. [2023-09-01 08:18:45,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4882882882882883 [2023-09-01 08:18:45,020 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1084 transitions. [2023-09-01 08:18:45,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1084 transitions. [2023-09-01 08:18:45,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:18:45,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1084 transitions. [2023-09-01 08:18:45,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 180.66666666666666) internal successors, (1084), 6 states have internal predecessors, (1084), 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 08:18:45,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 370.0) internal successors, (2590), 7 states have internal predecessors, (2590), 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 08:18:45,028 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 370.0) internal successors, (2590), 7 states have internal predecessors, (2590), 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 08:18:45,028 INFO L175 Difference]: Start difference. First operand has 31 places, 30 transitions, 91 flow. Second operand 6 states and 1084 transitions. [2023-09-01 08:18:45,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 119 transitions, 545 flow [2023-09-01 08:18:45,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 119 transitions, 531 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:18:45,031 INFO L231 Difference]: Finished difference. Result has 37 places, 39 transitions, 176 flow [2023-09-01 08:18:45,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=176, PETRI_PLACES=37, PETRI_TRANSITIONS=39} [2023-09-01 08:18:45,032 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-09-01 08:18:45,032 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 39 transitions, 176 flow [2023-09-01 08:18:45,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 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 08:18:45,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:18:45,033 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:18:45,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 08:18:45,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:18:45,240 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:18:45,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:18:45,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1793983124, now seen corresponding path program 2 times [2023-09-01 08:18:45,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:18:45,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086042104] [2023-09-01 08:18:45,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:45,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:18:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:45,350 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 08:18:45,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:18:45,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086042104] [2023-09-01 08:18:45,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086042104] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:18:45,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224154568] [2023-09-01 08:18:45,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:18:45,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:18:45,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:18:45,353 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 08:18:45,375 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 08:18:45,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:18:45,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:18:45,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:18:45,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:18:45,461 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 08:18:45,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:18:45,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224154568] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:18:45,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:18:45,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:18:45,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809107837] [2023-09-01 08:18:45,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:18:45,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:18:45,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:18:45,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:18:45,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:18:45,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 370 [2023-09-01 08:18:45,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 39 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:18:45,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:18:45,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 370 [2023-09-01 08:18:45,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:18:45,647 INFO L130 PetriNetUnfolder]: 881/1427 cut-off events. [2023-09-01 08:18:45,647 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 08:18:45,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2971 conditions, 1427 events. 881/1427 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7680 event pairs, 530 based on Foata normal form. 1/811 useless extension candidates. Maximal degree in co-relation 2959. Up to 1402 conditions per place. [2023-09-01 08:18:45,655 INFO L137 encePairwiseOnDemand]: 367/370 looper letters, 31 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2023-09-01 08:18:45,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 240 flow [2023-09-01 08:18:45,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:18:45,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:18:45,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-09-01 08:18:45,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46126126126126127 [2023-09-01 08:18:45,658 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-09-01 08:18:45,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-09-01 08:18:45,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:18:45,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-09-01 08:18:45,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 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 08:18:45,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 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 08:18:45,663 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 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 08:18:45,663 INFO L175 Difference]: Start difference. First operand has 37 places, 39 transitions, 176 flow. Second operand 3 states and 512 transitions. [2023-09-01 08:18:45,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 240 flow [2023-09-01 08:18:45,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 38 transitions, 221 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 08:18:45,665 INFO L231 Difference]: Finished difference. Result has 37 places, 38 transitions, 159 flow [2023-09-01 08:18:45,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=37, PETRI_TRANSITIONS=38} [2023-09-01 08:18:45,666 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-09-01 08:18:45,666 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 38 transitions, 159 flow [2023-09-01 08:18:45,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:18:45,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:18:45,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:18:45,674 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 08:18:45,873 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 08:18:45,873 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:18:45,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:18:45,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1806151333, now seen corresponding path program 1 times [2023-09-01 08:18:45,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:18:45,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320017236] [2023-09-01 08:18:45,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:45,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:18:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:45,950 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 08:18:45,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:18:45,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320017236] [2023-09-01 08:18:45,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320017236] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:18:45,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:18:45,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:18:45,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854660338] [2023-09-01 08:18:45,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:18:45,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:18:45,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:18:45,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:18:45,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:18:45,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 370 [2023-09-01 08:18:45,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 38 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 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 08:18:45,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:18:45,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 370 [2023-09-01 08:18:45,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:18:46,228 INFO L130 PetriNetUnfolder]: 1651/2607 cut-off events. [2023-09-01 08:18:46,228 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-09-01 08:18:46,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5387 conditions, 2607 events. 1651/2607 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 15194 event pairs, 425 based on Foata normal form. 0/1532 useless extension candidates. Maximal degree in co-relation 5374. Up to 1556 conditions per place. [2023-09-01 08:18:46,242 INFO L137 encePairwiseOnDemand]: 366/370 looper letters, 51 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-09-01 08:18:46,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 54 transitions, 300 flow [2023-09-01 08:18:46,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:18:46,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:18:46,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 538 transitions. [2023-09-01 08:18:46,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4846846846846847 [2023-09-01 08:18:46,244 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 538 transitions. [2023-09-01 08:18:46,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 538 transitions. [2023-09-01 08:18:46,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:18:46,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 538 transitions. [2023-09-01 08:18:46,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 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 08:18:46,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 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 08:18:46,252 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 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 08:18:46,252 INFO L175 Difference]: Start difference. First operand has 37 places, 38 transitions, 159 flow. Second operand 3 states and 538 transitions. [2023-09-01 08:18:46,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 54 transitions, 300 flow [2023-09-01 08:18:46,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:18:46,257 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 161 flow [2023-09-01 08:18:46,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2023-09-01 08:18:46,260 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2023-09-01 08:18:46,261 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 161 flow [2023-09-01 08:18:46,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 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 08:18:46,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:18:46,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:18:46,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 08:18:46,262 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:18:46,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:18:46,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1806148252, now seen corresponding path program 1 times [2023-09-01 08:18:46,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:18:46,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800177837] [2023-09-01 08:18:46,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:46,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:18:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:46,361 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 08:18:46,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:18:46,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800177837] [2023-09-01 08:18:46,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800177837] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:18:46,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:18:46,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:18:46,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716119470] [2023-09-01 08:18:46,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:18:46,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:18:46,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:18:46,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:18:46,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:18:46,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 370 [2023-09-01 08:18:46,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 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 08:18:46,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:18:46,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 370 [2023-09-01 08:18:46,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:18:46,723 INFO L130 PetriNetUnfolder]: 1976/3303 cut-off events. [2023-09-01 08:18:46,723 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2023-09-01 08:18:46,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7314 conditions, 3303 events. 1976/3303 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 21524 event pairs, 1320 based on Foata normal form. 60/2097 useless extension candidates. Maximal degree in co-relation 7300. Up to 2586 conditions per place. [2023-09-01 08:18:46,742 INFO L137 encePairwiseOnDemand]: 363/370 looper letters, 52 selfloop transitions, 3 changer transitions 4/60 dead transitions. [2023-09-01 08:18:46,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 60 transitions, 361 flow [2023-09-01 08:18:46,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:18:46,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:18:46,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 655 transitions. [2023-09-01 08:18:46,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44256756756756754 [2023-09-01 08:18:46,745 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 655 transitions. [2023-09-01 08:18:46,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 655 transitions. [2023-09-01 08:18:46,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:18:46,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 655 transitions. [2023-09-01 08:18:46,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 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 08:18:46,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 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 08:18:46,750 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 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 08:18:46,750 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 161 flow. Second operand 4 states and 655 transitions. [2023-09-01 08:18:46,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 60 transitions, 361 flow [2023-09-01 08:18:46,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 60 transitions, 358 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:18:46,752 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 174 flow [2023-09-01 08:18:46,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-09-01 08:18:46,753 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2023-09-01 08:18:46,753 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 174 flow [2023-09-01 08:18:46,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 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 08:18:46,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:18:46,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:18:46,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 08:18:46,754 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:18:46,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:18:46,755 INFO L85 PathProgramCache]: Analyzing trace with hash -208932163, now seen corresponding path program 1 times [2023-09-01 08:18:46,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:18:46,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770578526] [2023-09-01 08:18:46,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:46,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:18:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:46,835 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 08:18:46,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:18:46,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770578526] [2023-09-01 08:18:46,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770578526] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:18:46,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795067238] [2023-09-01 08:18:46,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:46,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:18:46,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:18:46,838 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 08:18:46,851 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 08:18:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:46,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:18:46,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:18:47,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:18:47,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:18:47,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795067238] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:18:47,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:18:47,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-09-01 08:18:47,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228268683] [2023-09-01 08:18:47,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:18:47,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:18:47,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:18:47,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:18:47,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:18:47,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 370 [2023-09-01 08:18:47,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 155.4) internal successors, (777), 5 states have internal predecessors, (777), 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 08:18:47,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:18:47,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 370 [2023-09-01 08:18:47,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:18:47,332 INFO L130 PetriNetUnfolder]: 1474/2467 cut-off events. [2023-09-01 08:18:47,332 INFO L131 PetriNetUnfolder]: For 270/294 co-relation queries the response was YES. [2023-09-01 08:18:47,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5992 conditions, 2467 events. 1474/2467 cut-off events. For 270/294 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 15347 event pairs, 972 based on Foata normal form. 2/1772 useless extension candidates. Maximal degree in co-relation 5976. Up to 2430 conditions per place. [2023-09-01 08:18:47,347 INFO L137 encePairwiseOnDemand]: 365/370 looper letters, 30 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2023-09-01 08:18:47,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 244 flow [2023-09-01 08:18:47,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:18:47,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:18:47,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 643 transitions. [2023-09-01 08:18:47,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43445945945945946 [2023-09-01 08:18:47,350 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 643 transitions. [2023-09-01 08:18:47,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 643 transitions. [2023-09-01 08:18:47,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:18:47,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 643 transitions. [2023-09-01 08:18:47,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 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 08:18:47,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 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 08:18:47,355 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 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 08:18:47,355 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 174 flow. Second operand 4 states and 643 transitions. [2023-09-01 08:18:47,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 244 flow [2023-09-01 08:18:47,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 238 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 08:18:47,358 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 186 flow [2023-09-01 08:18:47,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-09-01 08:18:47,359 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2023-09-01 08:18:47,359 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 186 flow [2023-09-01 08:18:47,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.4) internal successors, (777), 5 states have internal predecessors, (777), 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 08:18:47,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:18:47,360 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 08:18:47,372 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 08:18:47,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:18:47,566 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:18:47,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:18:47,566 INFO L85 PathProgramCache]: Analyzing trace with hash 157761778, now seen corresponding path program 1 times [2023-09-01 08:18:47,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:18:47,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635548511] [2023-09-01 08:18:47,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:47,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:18:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:47,638 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 08:18:47,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:18:47,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635548511] [2023-09-01 08:18:47,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635548511] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:18:47,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819070962] [2023-09-01 08:18:47,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:47,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:18:47,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:18:47,640 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 08:18:47,669 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 08:18:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:47,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 08:18:47,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:18:47,754 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 08:18:47,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:18:47,808 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 08:18:47,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819070962] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:18:47,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:18:47,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-09-01 08:18:47,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122190124] [2023-09-01 08:18:47,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:18:47,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:18:47,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:18:47,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:18:47,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:18:47,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 370 [2023-09-01 08:18:47,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 186 flow. Second operand has 13 states, 13 states have (on average 161.15384615384616) internal successors, (2095), 13 states have internal predecessors, (2095), 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 08:18:47,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:18:47,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 370 [2023-09-01 08:18:47,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:18:48,678 INFO L130 PetriNetUnfolder]: 3682/6157 cut-off events. [2023-09-01 08:18:48,678 INFO L131 PetriNetUnfolder]: For 643/643 co-relation queries the response was YES. [2023-09-01 08:18:48,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14942 conditions, 6157 events. 3682/6157 cut-off events. For 643/643 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 41294 event pairs, 2430 based on Foata normal form. 12/4496 useless extension candidates. Maximal degree in co-relation 14924. Up to 1581 conditions per place. [2023-09-01 08:18:48,714 INFO L137 encePairwiseOnDemand]: 365/370 looper letters, 204 selfloop transitions, 31 changer transitions 0/236 dead transitions. [2023-09-01 08:18:48,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 236 transitions, 1316 flow [2023-09-01 08:18:48,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 08:18:48,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 08:18:48,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2151 transitions. [2023-09-01 08:18:48,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48445945945945945 [2023-09-01 08:18:48,720 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2151 transitions. [2023-09-01 08:18:48,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2151 transitions. [2023-09-01 08:18:48,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:18:48,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2151 transitions. [2023-09-01 08:18:48,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 179.25) internal successors, (2151), 12 states have internal predecessors, (2151), 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 08:18:48,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 370.0) internal successors, (4810), 13 states have internal predecessors, (4810), 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 08:18:48,732 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 370.0) internal successors, (4810), 13 states have internal predecessors, (4810), 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 08:18:48,732 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 186 flow. Second operand 12 states and 2151 transitions. [2023-09-01 08:18:48,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 236 transitions, 1316 flow [2023-09-01 08:18:48,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 236 transitions, 1287 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-09-01 08:18:48,738 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 385 flow [2023-09-01 08:18:48,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=385, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2023-09-01 08:18:48,739 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2023-09-01 08:18:48,739 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 385 flow [2023-09-01 08:18:48,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 161.15384615384616) internal successors, (2095), 13 states have internal predecessors, (2095), 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 08:18:48,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:18:48,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:18:48,752 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 08:18:48,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:18:48,947 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:18:48,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:18:48,947 INFO L85 PathProgramCache]: Analyzing trace with hash 2114722249, now seen corresponding path program 1 times [2023-09-01 08:18:48,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:18:48,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649668369] [2023-09-01 08:18:48,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:48,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:18:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:49,019 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 08:18:49,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:18:49,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649668369] [2023-09-01 08:18:49,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649668369] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:18:49,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656408102] [2023-09-01 08:18:49,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:49,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:18:49,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:18:49,022 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 08:18:49,024 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 08:18:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:49,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:18:49,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:18:49,120 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 08:18:49,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:18:49,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656408102] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:18:49,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:18:49,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-09-01 08:18:49,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107475336] [2023-09-01 08:18:49,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:18:49,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:18:49,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:18:49,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:18:49,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:18:49,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 370 [2023-09-01 08:18:49,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 385 flow. Second operand has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 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 08:18:49,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:18:49,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 370 [2023-09-01 08:18:49,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:18:49,562 INFO L130 PetriNetUnfolder]: 2642/4617 cut-off events. [2023-09-01 08:18:49,562 INFO L131 PetriNetUnfolder]: For 598/598 co-relation queries the response was YES. [2023-09-01 08:18:49,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10922 conditions, 4617 events. 2642/4617 cut-off events. For 598/598 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 31286 event pairs, 1790 based on Foata normal form. 0/3807 useless extension candidates. Maximal degree in co-relation 10899. Up to 4537 conditions per place. [2023-09-01 08:18:49,586 INFO L137 encePairwiseOnDemand]: 367/370 looper letters, 49 selfloop transitions, 1 changer transitions 3/54 dead transitions. [2023-09-01 08:18:49,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 483 flow [2023-09-01 08:18:49,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:18:49,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:18:49,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2023-09-01 08:18:49,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2023-09-01 08:18:49,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2023-09-01 08:18:49,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2023-09-01 08:18:49,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:18:49,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2023-09-01 08:18:49,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 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 08:18:49,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 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 08:18:49,592 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 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 08:18:49,592 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 385 flow. Second operand 3 states and 516 transitions. [2023-09-01 08:18:49,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 483 flow [2023-09-01 08:18:49,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 54 transitions, 393 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-09-01 08:18:49,597 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 282 flow [2023-09-01 08:18:49,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2023-09-01 08:18:49,598 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2023-09-01 08:18:49,598 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 282 flow [2023-09-01 08:18:49,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 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 08:18:49,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:18:49,599 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:18:49,604 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 08:18:49,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:18:49,805 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:18:49,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:18:49,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1234282000, now seen corresponding path program 1 times [2023-09-01 08:18:49,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:18:49,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131301395] [2023-09-01 08:18:49,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:49,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:18:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:49,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:18:49,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:18:49,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131301395] [2023-09-01 08:18:49,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131301395] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:18:49,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837575169] [2023-09-01 08:18:49,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:49,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:18:49,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:18:49,881 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 08:18:49,900 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 08:18:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:49,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 08:18:49,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:18:50,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:18:50,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:18:50,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:18:50,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837575169] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:18:50,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:18:50,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 6, 6] total 12 [2023-09-01 08:18:50,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268468422] [2023-09-01 08:18:50,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:18:50,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:18:50,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:18:50,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:18:50,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:18:50,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 370 [2023-09-01 08:18:50,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 282 flow. Second operand has 13 states, 13 states have (on average 150.92307692307693) internal successors, (1962), 13 states have internal predecessors, (1962), 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 08:18:50,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:18:50,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 370 [2023-09-01 08:18:50,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:18:50,881 INFO L130 PetriNetUnfolder]: 2712/4581 cut-off events. [2023-09-01 08:18:50,881 INFO L131 PetriNetUnfolder]: For 562/562 co-relation queries the response was YES. [2023-09-01 08:18:50,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11011 conditions, 4581 events. 2712/4581 cut-off events. For 562/562 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 29277 event pairs, 487 based on Foata normal form. 16/4015 useless extension candidates. Maximal degree in co-relation 10988. Up to 1836 conditions per place. [2023-09-01 08:18:50,905 INFO L137 encePairwiseOnDemand]: 361/370 looper letters, 54 selfloop transitions, 17 changer transitions 19/91 dead transitions. [2023-09-01 08:18:50,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 91 transitions, 571 flow [2023-09-01 08:18:50,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 08:18:50,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 08:18:50,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1555 transitions. [2023-09-01 08:18:50,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42027027027027025 [2023-09-01 08:18:50,911 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1555 transitions. [2023-09-01 08:18:50,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1555 transitions. [2023-09-01 08:18:50,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:18:50,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1555 transitions. [2023-09-01 08:18:50,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 155.5) internal successors, (1555), 10 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:18:50,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 370.0) internal successors, (4070), 11 states have internal predecessors, (4070), 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 08:18:50,921 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 370.0) internal successors, (4070), 11 states have internal predecessors, (4070), 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 08:18:50,921 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 282 flow. Second operand 10 states and 1555 transitions. [2023-09-01 08:18:50,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 91 transitions, 571 flow [2023-09-01 08:18:50,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 91 transitions, 570 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:18:50,929 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 333 flow [2023-09-01 08:18:50,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=333, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2023-09-01 08:18:50,930 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2023-09-01 08:18:50,930 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 333 flow [2023-09-01 08:18:50,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 150.92307692307693) internal successors, (1962), 13 states have internal predecessors, (1962), 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 08:18:50,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:18:50,931 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-09-01 08:18:50,940 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 08:18:51,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:18:51,138 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:18:51,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:18:51,138 INFO L85 PathProgramCache]: Analyzing trace with hash -2075999010, now seen corresponding path program 2 times [2023-09-01 08:18:51,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:18:51,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998936965] [2023-09-01 08:18:51,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:51,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:18:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:51,218 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:18:51,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:18:51,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998936965] [2023-09-01 08:18:51,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998936965] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:18:51,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277681527] [2023-09-01 08:18:51,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:18:51,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:18:51,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:18:51,221 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 08:18:51,247 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 08:18:51,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:18:51,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:18:51,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:18:51,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:18:51,334 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-09-01 08:18:51,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:18:51,360 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-09-01 08:18:51,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277681527] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:18:51,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:18:51,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 5 [2023-09-01 08:18:51,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50619015] [2023-09-01 08:18:51,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:18:51,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:18:51,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:18:51,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:18:51,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:18:51,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 370 [2023-09-01 08:18:51,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 333 flow. Second operand has 7 states, 7 states have (on average 163.85714285714286) internal successors, (1147), 7 states have internal predecessors, (1147), 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 08:18:51,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:18:51,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 370 [2023-09-01 08:18:51,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:18:52,035 INFO L130 PetriNetUnfolder]: 3594/5906 cut-off events. [2023-09-01 08:18:52,035 INFO L131 PetriNetUnfolder]: For 1887/1905 co-relation queries the response was YES. [2023-09-01 08:18:52,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16138 conditions, 5906 events. 3594/5906 cut-off events. For 1887/1905 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 37962 event pairs, 441 based on Foata normal form. 0/5177 useless extension candidates. Maximal degree in co-relation 16111. Up to 1638 conditions per place. [2023-09-01 08:18:52,059 INFO L137 encePairwiseOnDemand]: 365/370 looper letters, 34 selfloop transitions, 1 changer transitions 55/90 dead transitions. [2023-09-01 08:18:52,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 90 transitions, 625 flow [2023-09-01 08:18:52,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:18:52,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:18:52,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1188 transitions. [2023-09-01 08:18:52,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4586872586872587 [2023-09-01 08:18:52,063 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1188 transitions. [2023-09-01 08:18:52,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1188 transitions. [2023-09-01 08:18:52,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:18:52,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1188 transitions. [2023-09-01 08:18:52,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 169.71428571428572) internal successors, (1188), 7 states have internal predecessors, (1188), 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 08:18:52,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 370.0) internal successors, (2960), 8 states have internal predecessors, (2960), 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 08:18:52,070 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 370.0) internal successors, (2960), 8 states have internal predecessors, (2960), 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 08:18:52,070 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 333 flow. Second operand 7 states and 1188 transitions. [2023-09-01 08:18:52,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 90 transitions, 625 flow [2023-09-01 08:18:52,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 90 transitions, 586 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-09-01 08:18:52,089 INFO L231 Difference]: Finished difference. Result has 59 places, 35 transitions, 252 flow [2023-09-01 08:18:52,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=252, PETRI_PLACES=59, PETRI_TRANSITIONS=35} [2023-09-01 08:18:52,090 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 26 predicate places. [2023-09-01 08:18:52,090 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 35 transitions, 252 flow [2023-09-01 08:18:52,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 163.85714285714286) internal successors, (1147), 7 states have internal predecessors, (1147), 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 08:18:52,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:18:52,091 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-09-01 08:18:52,099 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 08:18:52,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:18:52,297 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:18:52,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:18:52,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1538947150, now seen corresponding path program 2 times [2023-09-01 08:18:52,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:18:52,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579281251] [2023-09-01 08:18:52,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:52,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:18:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:52,496 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 08:18:52,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:18:52,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579281251] [2023-09-01 08:18:52,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579281251] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:18:52,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943930244] [2023-09-01 08:18:52,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:18:52,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:18:52,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:18:52,501 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 08:18:52,527 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 08:18:52,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:18:52,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:18:52,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:18:52,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:18:52,625 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 08:18:52,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:18:52,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943930244] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:18:52,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:18:52,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-09-01 08:18:52,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647471790] [2023-09-01 08:18:52,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:18:52,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:18:52,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:18:52,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:18:52,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-09-01 08:18:52,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 370 [2023-09-01 08:18:52,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 35 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 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 08:18:52,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:18:52,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 370 [2023-09-01 08:18:52,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:18:52,701 INFO L130 PetriNetUnfolder]: 12/45 cut-off events. [2023-09-01 08:18:52,701 INFO L131 PetriNetUnfolder]: For 125/125 co-relation queries the response was YES. [2023-09-01 08:18:52,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 45 events. 12/45 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 2/47 useless extension candidates. Maximal degree in co-relation 185. Up to 45 conditions per place. [2023-09-01 08:18:52,702 INFO L137 encePairwiseOnDemand]: 368/370 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2023-09-01 08:18:52,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 34 transitions, 296 flow [2023-09-01 08:18:52,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:18:52,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:18:52,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2023-09-01 08:18:52,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4369369369369369 [2023-09-01 08:18:52,704 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2023-09-01 08:18:52,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2023-09-01 08:18:52,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:18:52,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2023-09-01 08:18:52,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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 08:18:52,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 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 08:18:52,720 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 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 08:18:52,720 INFO L175 Difference]: Start difference. First operand has 59 places, 35 transitions, 252 flow. Second operand 3 states and 485 transitions. [2023-09-01 08:18:52,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 34 transitions, 296 flow [2023-09-01 08:18:52,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 34 transitions, 204 flow, removed 2 selfloop flow, removed 16 redundant places. [2023-09-01 08:18:52,722 INFO L231 Difference]: Finished difference. Result has 23 places, 0 transitions, 0 flow [2023-09-01 08:18:52,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=23, PETRI_TRANSITIONS=0} [2023-09-01 08:18:52,723 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -10 predicate places. [2023-09-01 08:18:52,723 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 0 transitions, 0 flow [2023-09-01 08:18:52,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 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 08:18:52,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-09-01 08:18:52,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-09-01 08:18:52,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-09-01 08:18:52,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-09-01 08:18:52,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-09-01 08:18:52,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-09-01 08:18:52,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-09-01 08:18:52,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-09-01 08:18:52,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-09-01 08:18:52,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-09-01 08:18:52,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2023-09-01 08:18:52,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining) [2023-09-01 08:18:52,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-09-01 08:18:52,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-09-01 08:18:52,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-09-01 08:18:52,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-09-01 08:18:52,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-09-01 08:18:52,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-09-01 08:18:52,742 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 08:18:52,943 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 08:18:52,944 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-09-01 08:18:52,949 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 08:18:52,949 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 08:18:52,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 08:18:52 BasicIcfg [2023-09-01 08:18:52,953 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 08:18:52,954 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 08:18:52,954 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 08:18:52,954 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 08:18:52,954 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:18:38" (3/4) ... [2023-09-01 08:18:52,958 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 08:18:52,962 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 08:18:52,962 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 08:18:52,970 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2023-09-01 08:18:52,971 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 08:18:52,971 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 08:18:52,971 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 08:18:53,019 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 08:18:53,019 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 08:18:53,020 INFO L158 Benchmark]: Toolchain (without parser) took 16153.83ms. Allocated memory was 102.8MB in the beginning and 522.2MB in the end (delta: 419.4MB). Free memory was 81.1MB in the beginning and 165.9MB in the end (delta: -84.8MB). Peak memory consumption was 336.6MB. Max. memory is 16.1GB. [2023-09-01 08:18:53,020 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 65.0MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 08:18:53,020 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.39ms. Allocated memory is still 102.8MB. Free memory was 80.9MB in the beginning and 69.1MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-09-01 08:18:53,022 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.72ms. Allocated memory is still 102.8MB. Free memory was 69.1MB in the beginning and 67.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:18:53,023 INFO L158 Benchmark]: Boogie Preprocessor took 28.92ms. Allocated memory is still 102.8MB. Free memory was 67.0MB in the beginning and 65.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:18:53,023 INFO L158 Benchmark]: RCFGBuilder took 836.03ms. Allocated memory is still 102.8MB. Free memory was 65.2MB in the beginning and 66.3MB in the end (delta: -1.0MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2023-09-01 08:18:53,023 INFO L158 Benchmark]: TraceAbstraction took 14890.64ms. Allocated memory was 102.8MB in the beginning and 522.2MB in the end (delta: 419.4MB). Free memory was 65.7MB in the beginning and 169.1MB in the end (delta: -103.4MB). Peak memory consumption was 316.8MB. Max. memory is 16.1GB. [2023-09-01 08:18:53,024 INFO L158 Benchmark]: Witness Printer took 65.83ms. Allocated memory is still 522.2MB. Free memory was 169.1MB in the beginning and 165.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:18:53,026 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 65.0MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.39ms. Allocated memory is still 102.8MB. Free memory was 80.9MB in the beginning and 69.1MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.72ms. Allocated memory is still 102.8MB. Free memory was 69.1MB in the beginning and 67.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.92ms. Allocated memory is still 102.8MB. Free memory was 67.0MB in the beginning and 65.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 836.03ms. Allocated memory is still 102.8MB. Free memory was 65.2MB in the beginning and 66.3MB in the end (delta: -1.0MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. * TraceAbstraction took 14890.64ms. Allocated memory was 102.8MB in the beginning and 522.2MB in the end (delta: 419.4MB). Free memory was 65.7MB in the beginning and 169.1MB in the end (delta: -103.4MB). Peak memory consumption was 316.8MB. Max. memory is 16.1GB. * Witness Printer took 65.83ms. Allocated memory is still 522.2MB. Free memory was 169.1MB in the beginning and 165.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.4s, 165 PlacesBefore, 33 PlacesAfterwards, 172 TransitionsBefore, 31 TransitionsAfterwards, 942 CoEnabledTransitionPairs, 7 FixpointIterations, 120 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 21 TrivialYvCompositions, 4 ConcurrentYvCompositions, 9 ChoiceCompositions, 180 TotalNumberOfCompositions, 1454 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1054, independent: 997, independent conditional: 0, independent unconditional: 997, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 480, independent: 467, independent conditional: 0, independent unconditional: 467, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1054, independent: 530, independent conditional: 0, independent unconditional: 530, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 480, unknown conditional: 0, unknown unconditional: 480] , Statistics on independence cache: Total cache size (in pairs): 61, Positive cache size: 54, Positive conditional cache size: 0, Positive unconditional cache size: 54, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: 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, 206 locations, 18 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: 14.8s, OverallIterations: 12, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1719 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1421 mSDsluCounter, 483 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 372 mSDsCounter, 115 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1937 IncrementalHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 115 mSolverCounterUnsat, 111 mSDtfsCounter, 1937 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=385occurred in iteration=8, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 146 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 153 ConstructedInterpolants, 0 QuantifiedInterpolants, 524 SizeOfPredicates, 17 NumberOfNonLiveVariables, 1229 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 24 InterpolantComputations, 8 PerfectInterpolantSequences, 91/205 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 08:18:53,055 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