./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.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 4018a1168c08743b2a9b9283b6137e1dcc53bdf8ab8362348f4bbe02762305c3 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:43:31,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:43:31,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:43:31,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:43:31,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:43:31,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:43:31,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:43:31,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:43:31,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:43:31,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:43:31,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:43:31,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:43:31,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:43:31,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:43:31,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:43:31,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:43:31,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:43:31,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:43:31,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:43:31,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:43:31,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:43:31,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:43:31,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:43:31,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:43:31,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:43:31,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:43:31,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:43:31,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:43:31,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:43:31,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:43:31,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:43:31,842 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:43:31,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:43:31,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:43:31,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:43:31,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:43:31,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:43:31,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:43:31,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:43:31,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:43:31,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:43:31,848 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:43:31,873 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:43:31,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:43:31,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:43:31,875 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:43:31,876 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:43:31,876 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:43:31,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:43:31,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:43:31,877 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:43:31,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:43:31,878 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:43:31,879 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:43:31,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:43:31,879 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:43:31,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:43:31,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:43:31,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:43:31,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:43:31,880 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:43:31,880 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:43:31,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:43:31,880 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:43:31,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:43:31,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:43:31,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:43:31,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:43:31,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:43:31,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:43:31,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:43:31,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:43:31,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:43:31,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:43:31,883 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:43:31,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:43:31,883 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:43:31,883 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:43:31,883 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:43:31,884 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4018a1168c08743b2a9b9283b6137e1dcc53bdf8ab8362348f4bbe02762305c3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:43:32,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:43:32,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:43:32,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:43:32,199 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:43:32,200 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:43:32,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c [2023-08-30 11:43:33,473 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:43:33,660 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:43:33,661 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c [2023-08-30 11:43:33,671 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17d252309/ceb8bf018476492d92c8d986c17cb671/FLAGa436fc658 [2023-08-30 11:43:33,695 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17d252309/ceb8bf018476492d92c8d986c17cb671 [2023-08-30 11:43:33,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:43:33,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:43:33,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:43:33,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:43:33,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:43:33,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:43:33" (1/1) ... [2023-08-30 11:43:33,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3865fa0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:33, skipping insertion in model container [2023-08-30 11:43:33,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:43:33" (1/1) ... [2023-08-30 11:43:33,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:43:33,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:43:33,910 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-array-sum-alt2.wvr.c[2525,2538] [2023-08-30 11:43:33,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:43:33,933 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:43:33,967 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-array-sum-alt2.wvr.c[2525,2538] [2023-08-30 11:43:33,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:43:33,989 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:43:33,989 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:43:33,995 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:43:33,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:33 WrapperNode [2023-08-30 11:43:33,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:43:33,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:43:33,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:43:33,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:43:34,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:33" (1/1) ... [2023-08-30 11:43:34,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:33" (1/1) ... [2023-08-30 11:43:34,058 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 244 [2023-08-30 11:43:34,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:43:34,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:43:34,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:43:34,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:43:34,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:33" (1/1) ... [2023-08-30 11:43:34,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:33" (1/1) ... [2023-08-30 11:43:34,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:33" (1/1) ... [2023-08-30 11:43:34,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:33" (1/1) ... [2023-08-30 11:43:34,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:33" (1/1) ... [2023-08-30 11:43:34,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:33" (1/1) ... [2023-08-30 11:43:34,087 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:33" (1/1) ... [2023-08-30 11:43:34,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:33" (1/1) ... [2023-08-30 11:43:34,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:43:34,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:43:34,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:43:34,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:43:34,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:33" (1/1) ... [2023-08-30 11:43:34,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:43:34,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:43:34,130 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 11:43:34,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 11:43:34,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:43:34,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:43:34,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:43:34,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:43:34,156 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:43:34,157 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:43:34,157 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:43:34,157 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:43:34,157 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:43:34,157 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:43:34,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:43:34,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:43:34,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:43:34,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:43:34,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:43:34,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:43:34,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:43:34,160 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 11:43:34,251 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:43:34,253 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:43:34,629 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:43:35,101 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:43:35,102 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 11:43:35,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:43:35 BoogieIcfgContainer [2023-08-30 11:43:35,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:43:35,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:43:35,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:43:35,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:43:35,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:43:33" (1/3) ... [2023-08-30 11:43:35,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dfeead9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:43:35, skipping insertion in model container [2023-08-30 11:43:35,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:33" (2/3) ... [2023-08-30 11:43:35,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dfeead9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:43:35, skipping insertion in model container [2023-08-30 11:43:35,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:43:35" (3/3) ... [2023-08-30 11:43:35,112 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt2.wvr.c [2023-08-30 11:43:35,118 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:43:35,126 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:43:35,126 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-08-30 11:43:35,127 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:43:35,285 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 11:43:35,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 176 transitions, 376 flow [2023-08-30 11:43:35,426 INFO L130 PetriNetUnfolder]: 12/173 cut-off events. [2023-08-30 11:43:35,426 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:43:35,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 173 events. 12/173 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 231 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2023-08-30 11:43:35,432 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 176 transitions, 376 flow [2023-08-30 11:43:35,440 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 155 transitions, 325 flow [2023-08-30 11:43:35,443 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:43:35,453 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 155 transitions, 325 flow [2023-08-30 11:43:35,456 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 155 transitions, 325 flow [2023-08-30 11:43:35,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 155 transitions, 325 flow [2023-08-30 11:43:35,514 INFO L130 PetriNetUnfolder]: 11/155 cut-off events. [2023-08-30 11:43:35,514 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:43:35,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 155 events. 11/155 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 228 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2023-08-30 11:43:35,519 INFO L119 LiptonReduction]: Number of co-enabled transitions 3840 [2023-08-30 11:43:49,758 INFO L134 LiptonReduction]: Checked pairs total: 5038 [2023-08-30 11:43:49,759 INFO L136 LiptonReduction]: Total number of compositions: 158 [2023-08-30 11:43:49,769 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:43:49,774 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;@506f80c2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:43:49,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2023-08-30 11:43:49,777 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:43:49,777 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:43:49,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:43:49,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:43:49,778 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:43:49,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:43:49,782 INFO L85 PathProgramCache]: Analyzing trace with hash 32650, now seen corresponding path program 1 times [2023-08-30 11:43:49,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:43:49,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820960572] [2023-08-30 11:43:49,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:43:49,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:43:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:43:50,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:43:50,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:43:50,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820960572] [2023-08-30 11:43:50,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820960572] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:43:50,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:43:50,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:43:50,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071329935] [2023-08-30 11:43:50,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:43:50,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:43:50,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:43:50,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:43:50,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:43:50,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 334 [2023-08-30 11:43:50,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:50,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:43:50,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 334 [2023-08-30 11:43:50,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:43:53,116 INFO L130 PetriNetUnfolder]: 14481/18123 cut-off events. [2023-08-30 11:43:53,116 INFO L131 PetriNetUnfolder]: For 236/236 co-relation queries the response was YES. [2023-08-30 11:43:53,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36614 conditions, 18123 events. 14481/18123 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 2048. Compared 91034 event pairs, 7051 based on Foata normal form. 0/4174 useless extension candidates. Maximal degree in co-relation 16644. Up to 8978 conditions per place. [2023-08-30 11:43:53,238 INFO L137 encePairwiseOnDemand]: 324/334 looper letters, 73 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-08-30 11:43:53,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 78 transitions, 336 flow [2023-08-30 11:43:53,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:43:53,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:43:53,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2023-08-30 11:43:53,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.499001996007984 [2023-08-30 11:43:53,295 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2023-08-30 11:43:53,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2023-08-30 11:43:53,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:43:53,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2023-08-30 11:43:53,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-08-30 11:43:53,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:53,316 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:53,318 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 111 flow. Second operand 3 states and 500 transitions. [2023-08-30 11:43:53,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 78 transitions, 336 flow [2023-08-30 11:43:53,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 78 transitions, 318 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 11:43:53,384 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 104 flow [2023-08-30 11:43:53,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-08-30 11:43:53,390 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -8 predicate places. [2023-08-30 11:43:53,392 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 104 flow [2023-08-30 11:43:53,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:53,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:43:53,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:43:53,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:43:53,394 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:43:53,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:43:53,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1013335, now seen corresponding path program 1 times [2023-08-30 11:43:53,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:43:53,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737795634] [2023-08-30 11:43:53,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:43:53,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:43:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:43:53,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:43:53,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:43:53,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737795634] [2023-08-30 11:43:53,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737795634] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:43:53,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039750543] [2023-08-30 11:43:53,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:43:53,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:43:53,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:43:53,581 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:43:53,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 11:43:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:43:53,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:43:53,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:43:53,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:43:53,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:43:53,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039750543] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:43:53,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:43:53,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 11:43:53,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451836268] [2023-08-30 11:43:53,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:43:53,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:43:53,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:43:53,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:43:53,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:43:53,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 334 [2023-08-30 11:43:53,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:53,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:43:53,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 334 [2023-08-30 11:43:53,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:43:56,567 INFO L130 PetriNetUnfolder]: 14481/18122 cut-off events. [2023-08-30 11:43:56,567 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 11:43:56,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36416 conditions, 18122 events. 14481/18122 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 2056. Compared 91355 event pairs, 7051 based on Foata normal form. 0/4176 useless extension candidates. Maximal degree in co-relation 18216. Up to 8978 conditions per place. [2023-08-30 11:43:56,643 INFO L137 encePairwiseOnDemand]: 331/334 looper letters, 72 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-08-30 11:43:56,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 77 transitions, 324 flow [2023-08-30 11:43:56,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:43:56,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:43:56,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 623 transitions. [2023-08-30 11:43:56,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4663173652694611 [2023-08-30 11:43:56,647 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 623 transitions. [2023-08-30 11:43:56,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 623 transitions. [2023-08-30 11:43:56,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:43:56,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 623 transitions. [2023-08-30 11:43:56,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:56,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 334.0) internal successors, (1670), 5 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:56,652 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 334.0) internal successors, (1670), 5 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:56,653 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 104 flow. Second operand 4 states and 623 transitions. [2023-08-30 11:43:56,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 77 transitions, 324 flow [2023-08-30 11:43:56,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 77 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:43:56,655 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 102 flow [2023-08-30 11:43:56,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-08-30 11:43:56,656 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2023-08-30 11:43:56,656 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 102 flow [2023-08-30 11:43:56,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:56,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:43:56,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:43:56,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 11:43:56,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:43:56,863 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:43:56,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:43:56,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1013334, now seen corresponding path program 1 times [2023-08-30 11:43:56,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:43:56,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693935733] [2023-08-30 11:43:56,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:43:56,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:43:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:43:56,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:43:56,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:43:56,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693935733] [2023-08-30 11:43:56,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693935733] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:43:56,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683663706] [2023-08-30 11:43:56,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:43:56,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:43:56,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:43:56,943 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:43:56,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 11:43:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:43:57,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:43:57,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:43:57,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:43:57,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:43:57,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:43:57,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683663706] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:43:57,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:43:57,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:43:57,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220955182] [2023-08-30 11:43:57,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:43:57,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:43:57,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:43:57,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:43:57,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:43:57,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 334 [2023-08-30 11:43:57,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 102 flow. Second operand has 7 states, 7 states have (on average 138.14285714285714) internal successors, (967), 7 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:57,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:43:57,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 334 [2023-08-30 11:43:57,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:44:02,444 INFO L130 PetriNetUnfolder]: 36177/45278 cut-off events. [2023-08-30 11:44:02,444 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-08-30 11:44:02,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90975 conditions, 45278 events. 36177/45278 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 3779. Compared 247075 event pairs, 17626 based on Foata normal form. 0/10437 useless extension candidates. Maximal degree in co-relation 72747. Up to 8978 conditions per place. [2023-08-30 11:44:02,656 INFO L137 encePairwiseOnDemand]: 331/334 looper letters, 177 selfloop transitions, 5 changer transitions 0/185 dead transitions. [2023-08-30 11:44:02,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 185 transitions, 782 flow [2023-08-30 11:44:02,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:44:02,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:44:02,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1007 transitions. [2023-08-30 11:44:02,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5024950099800399 [2023-08-30 11:44:02,664 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1007 transitions. [2023-08-30 11:44:02,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1007 transitions. [2023-08-30 11:44:02,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:44:02,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1007 transitions. [2023-08-30 11:44:02,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.83333333333334) internal successors, (1007), 6 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:02,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 334.0) internal successors, (2338), 7 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:02,671 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 334.0) internal successors, (2338), 7 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:02,671 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 102 flow. Second operand 6 states and 1007 transitions. [2023-08-30 11:44:02,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 185 transitions, 782 flow [2023-08-30 11:44:02,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 185 transitions, 779 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:44:02,679 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 135 flow [2023-08-30 11:44:02,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=135, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2023-08-30 11:44:02,680 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2023-08-30 11:44:02,681 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 135 flow [2023-08-30 11:44:02,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 138.14285714285714) internal successors, (967), 7 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:02,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:44:02,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 11:44:02,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 11:44:02,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-30 11:44:02,887 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:44:02,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:44:02,888 INFO L85 PathProgramCache]: Analyzing trace with hash 974123998, now seen corresponding path program 1 times [2023-08-30 11:44:02,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:44:02,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309323607] [2023-08-30 11:44:02,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:02,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:44:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:02,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:02,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:44:02,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309323607] [2023-08-30 11:44:02,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309323607] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:44:03,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:44:03,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:44:03,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073690386] [2023-08-30 11:44:03,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:44:03,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:44:03,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:44:03,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:44:03,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:44:03,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 334 [2023-08-30 11:44:03,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:03,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:44:03,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 334 [2023-08-30 11:44:03,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:44:07,023 INFO L130 PetriNetUnfolder]: 26541/34476 cut-off events. [2023-08-30 11:44:07,023 INFO L131 PetriNetUnfolder]: For 108/108 co-relation queries the response was YES. [2023-08-30 11:44:07,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69383 conditions, 34476 events. 26541/34476 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 3458. Compared 205340 event pairs, 14963 based on Foata normal form. 0/9387 useless extension candidates. Maximal degree in co-relation 63669. Up to 31319 conditions per place. [2023-08-30 11:44:07,173 INFO L137 encePairwiseOnDemand]: 322/334 looper letters, 87 selfloop transitions, 4 changer transitions 0/93 dead transitions. [2023-08-30 11:44:07,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 93 transitions, 422 flow [2023-08-30 11:44:07,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:44:07,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:44:07,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 752 transitions. [2023-08-30 11:44:07,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4502994011976048 [2023-08-30 11:44:07,177 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 752 transitions. [2023-08-30 11:44:07,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 752 transitions. [2023-08-30 11:44:07,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:44:07,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 752 transitions. [2023-08-30 11:44:07,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.4) internal successors, (752), 5 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:07,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 334.0) internal successors, (2004), 6 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:07,184 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 334.0) internal successors, (2004), 6 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:07,184 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 135 flow. Second operand 5 states and 752 transitions. [2023-08-30 11:44:07,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 93 transitions, 422 flow [2023-08-30 11:44:07,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 93 transitions, 414 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 11:44:07,187 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 167 flow [2023-08-30 11:44:07,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=167, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2023-08-30 11:44:07,188 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 5 predicate places. [2023-08-30 11:44:07,188 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 167 flow [2023-08-30 11:44:07,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:07,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:44:07,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:44:07,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 11:44:07,189 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:44:07,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:44:07,190 INFO L85 PathProgramCache]: Analyzing trace with hash 124939822, now seen corresponding path program 1 times [2023-08-30 11:44:07,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:44:07,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115224396] [2023-08-30 11:44:07,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:07,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:44:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:07,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:44:07,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:44:07,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115224396] [2023-08-30 11:44:07,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115224396] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:44:07,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:44:07,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:44:07,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364831924] [2023-08-30 11:44:07,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:44:07,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:44:07,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:44:07,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:44:07,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:44:07,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 334 [2023-08-30 11:44:07,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:07,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:44:07,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 334 [2023-08-30 11:44:07,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:44:14,033 INFO L130 PetriNetUnfolder]: 48517/61540 cut-off events. [2023-08-30 11:44:14,034 INFO L131 PetriNetUnfolder]: For 6444/8262 co-relation queries the response was YES. [2023-08-30 11:44:14,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138528 conditions, 61540 events. 48517/61540 cut-off events. For 6444/8262 co-relation queries the response was YES. Maximal size of possible extension queue 5500. Compared 370137 event pairs, 15031 based on Foata normal form. 18/19073 useless extension candidates. Maximal degree in co-relation 132498. Up to 34681 conditions per place. [2023-08-30 11:44:14,334 INFO L137 encePairwiseOnDemand]: 330/334 looper letters, 73 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2023-08-30 11:44:14,334 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 78 transitions, 400 flow [2023-08-30 11:44:14,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:44:14,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:44:14,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2023-08-30 11:44:14,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48502994011976047 [2023-08-30 11:44:14,336 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 486 transitions. [2023-08-30 11:44:14,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 486 transitions. [2023-08-30 11:44:14,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:44:14,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 486 transitions. [2023-08-30 11:44:14,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:14,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:14,341 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:14,341 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 167 flow. Second operand 3 states and 486 transitions. [2023-08-30 11:44:14,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 78 transitions, 400 flow [2023-08-30 11:44:14,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 78 transitions, 394 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 11:44:14,348 INFO L231 Difference]: Finished difference. Result has 60 places, 48 transitions, 180 flow [2023-08-30 11:44:14,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=60, PETRI_TRANSITIONS=48} [2023-08-30 11:44:14,349 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2023-08-30 11:44:14,349 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 48 transitions, 180 flow [2023-08-30 11:44:14,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:14,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:44:14,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:44:14,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 11:44:14,350 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:44:14,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:44:14,350 INFO L85 PathProgramCache]: Analyzing trace with hash 124939761, now seen corresponding path program 1 times [2023-08-30 11:44:14,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:44:14,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948416250] [2023-08-30 11:44:14,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:14,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:44:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:14,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:44:14,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:44:14,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948416250] [2023-08-30 11:44:14,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948416250] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:44:14,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:44:14,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:44:14,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139004148] [2023-08-30 11:44:14,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:44:14,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:44:14,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:44:14,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:44:14,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:44:14,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 334 [2023-08-30 11:44:14,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 48 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:14,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:44:14,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 334 [2023-08-30 11:44:14,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:44:19,980 INFO L130 PetriNetUnfolder]: 38938/49690 cut-off events. [2023-08-30 11:44:19,980 INFO L131 PetriNetUnfolder]: For 6811/7938 co-relation queries the response was YES. [2023-08-30 11:44:20,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115155 conditions, 49690 events. 38938/49690 cut-off events. For 6811/7938 co-relation queries the response was YES. Maximal size of possible extension queue 4537. Compared 295138 event pairs, 7839 based on Foata normal form. 1127/18482 useless extension candidates. Maximal degree in co-relation 111226. Up to 32389 conditions per place. [2023-08-30 11:44:20,213 INFO L137 encePairwiseOnDemand]: 330/334 looper letters, 70 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-30 11:44:20,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 76 transitions, 393 flow [2023-08-30 11:44:20,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:44:20,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:44:20,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2023-08-30 11:44:20,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48502994011976047 [2023-08-30 11:44:20,216 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 486 transitions. [2023-08-30 11:44:20,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 486 transitions. [2023-08-30 11:44:20,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:44:20,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 486 transitions. [2023-08-30 11:44:20,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:20,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:20,220 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:20,221 INFO L175 Difference]: Start difference. First operand has 60 places, 48 transitions, 180 flow. Second operand 3 states and 486 transitions. [2023-08-30 11:44:20,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 76 transitions, 393 flow [2023-08-30 11:44:20,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 76 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:44:20,229 INFO L231 Difference]: Finished difference. Result has 62 places, 48 transitions, 187 flow [2023-08-30 11:44:20,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=62, PETRI_TRANSITIONS=48} [2023-08-30 11:44:20,230 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2023-08-30 11:44:20,230 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 48 transitions, 187 flow [2023-08-30 11:44:20,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:20,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:44:20,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:44:20,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 11:44:20,231 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:44:20,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:44:20,232 INFO L85 PathProgramCache]: Analyzing trace with hash 124939757, now seen corresponding path program 1 times [2023-08-30 11:44:20,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:44:20,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367077473] [2023-08-30 11:44:20,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:20,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:44:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:20,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:20,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:44:20,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367077473] [2023-08-30 11:44:20,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367077473] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:44:20,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863154622] [2023-08-30 11:44:20,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:20,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:44:20,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:44:20,447 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:44:20,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 11:44:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:20,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 11:44:20,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:44:20,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 11:44:20,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:44:20,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 11:44:20,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:20,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:44:20,797 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:44:20,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-08-30 11:44:20,806 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:44:20,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-08-30 11:44:20,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-08-30 11:44:20,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:20,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863154622] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:44:20,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:44:20,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-30 11:44:20,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547031794] [2023-08-30 11:44:20,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:44:20,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:44:20,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:44:20,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:44:20,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=119, Unknown=2, NotChecked=0, Total=156 [2023-08-30 11:44:21,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 334 [2023-08-30 11:44:21,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 48 transitions, 187 flow. Second operand has 13 states, 13 states have (on average 117.3076923076923) internal successors, (1525), 13 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:21,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:44:21,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 334 [2023-08-30 11:44:21,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:44:28,620 INFO L130 PetriNetUnfolder]: 50961/66868 cut-off events. [2023-08-30 11:44:28,620 INFO L131 PetriNetUnfolder]: For 17490/17634 co-relation queries the response was YES. [2023-08-30 11:44:28,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154135 conditions, 66868 events. 50961/66868 cut-off events. For 17490/17634 co-relation queries the response was YES. Maximal size of possible extension queue 6877. Compared 446816 event pairs, 16314 based on Foata normal form. 0/23965 useless extension candidates. Maximal degree in co-relation 148322. Up to 42769 conditions per place. [2023-08-30 11:44:28,970 INFO L137 encePairwiseOnDemand]: 321/334 looper letters, 87 selfloop transitions, 19 changer transitions 0/108 dead transitions. [2023-08-30 11:44:28,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 108 transitions, 569 flow [2023-08-30 11:44:28,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 11:44:28,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 11:44:28,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1031 transitions. [2023-08-30 11:44:28,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38585329341317365 [2023-08-30 11:44:28,974 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1031 transitions. [2023-08-30 11:44:28,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1031 transitions. [2023-08-30 11:44:28,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:44:28,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1031 transitions. [2023-08-30 11:44:28,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.875) internal successors, (1031), 8 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:28,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 334.0) internal successors, (3006), 9 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:28,981 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 334.0) internal successors, (3006), 9 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:28,981 INFO L175 Difference]: Start difference. First operand has 62 places, 48 transitions, 187 flow. Second operand 8 states and 1031 transitions. [2023-08-30 11:44:28,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 108 transitions, 569 flow [2023-08-30 11:44:28,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 108 transitions, 563 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:44:28,991 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 304 flow [2023-08-30 11:44:28,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=304, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2023-08-30 11:44:28,992 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2023-08-30 11:44:28,992 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 304 flow [2023-08-30 11:44:28,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 117.3076923076923) internal successors, (1525), 13 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:28,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:44:28,993 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:44:29,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 11:44:29,201 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 [2023-08-30 11:44:29,201 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:44:29,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:44:29,202 INFO L85 PathProgramCache]: Analyzing trace with hash 124668617, now seen corresponding path program 2 times [2023-08-30 11:44:29,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:44:29,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43102130] [2023-08-30 11:44:29,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:29,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:44:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:29,301 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:29,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:44:29,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43102130] [2023-08-30 11:44:29,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43102130] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:44:29,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802907230] [2023-08-30 11:44:29,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:44:29,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:44:29,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:44:29,303 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:44:29,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 11:44:29,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:44:29,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:44:29,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:44:29,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:44:29,468 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:44:29,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:44:29,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802907230] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:44:29,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:44:29,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:44:29,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116615932] [2023-08-30 11:44:29,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:44:29,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:44:29,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:44:29,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:44:29,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:44:29,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 334 [2023-08-30 11:44:29,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:29,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:44:29,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 334 [2023-08-30 11:44:29,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:44:36,880 INFO L130 PetriNetUnfolder]: 48546/63641 cut-off events. [2023-08-30 11:44:36,880 INFO L131 PetriNetUnfolder]: For 37450/39432 co-relation queries the response was YES. [2023-08-30 11:44:37,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152709 conditions, 63641 events. 48546/63641 cut-off events. For 37450/39432 co-relation queries the response was YES. Maximal size of possible extension queue 6681. Compared 422238 event pairs, 25339 based on Foata normal form. 1767/26138 useless extension candidates. Maximal degree in co-relation 148756. Up to 63132 conditions per place. [2023-08-30 11:44:37,243 INFO L137 encePairwiseOnDemand]: 332/334 looper letters, 53 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2023-08-30 11:44:37,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 59 transitions, 402 flow [2023-08-30 11:44:37,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:44:37,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:44:37,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-08-30 11:44:37,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45109780439121755 [2023-08-30 11:44:37,244 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-08-30 11:44:37,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-08-30 11:44:37,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:44:37,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-08-30 11:44:37,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:37,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:37,246 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:37,247 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 304 flow. Second operand 3 states and 452 transitions. [2023-08-30 11:44:37,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 59 transitions, 402 flow [2023-08-30 11:44:37,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 59 transitions, 381 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-30 11:44:37,271 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 275 flow [2023-08-30 11:44:37,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-08-30 11:44:37,272 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 12 predicate places. [2023-08-30 11:44:37,272 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 275 flow [2023-08-30 11:44:37,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:37,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:44:37,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:44:37,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 11:44:37,477 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 [2023-08-30 11:44:37,477 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:44:37,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:44:37,478 INFO L85 PathProgramCache]: Analyzing trace with hash 124939758, now seen corresponding path program 1 times [2023-08-30 11:44:37,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:44:37,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713163641] [2023-08-30 11:44:37,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:37,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:44:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:37,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:37,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:44:37,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713163641] [2023-08-30 11:44:37,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713163641] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:44:37,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407820667] [2023-08-30 11:44:37,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:37,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:44:37,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:44:37,737 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:44:37,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 11:44:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:37,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 11:44:37,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:44:37,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 11:44:37,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:44:37,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 11:44:37,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:37,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:44:38,010 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:44:38,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-08-30 11:44:38,018 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:44:38,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-08-30 11:44:38,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-08-30 11:44:38,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:38,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407820667] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:44:38,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:44:38,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-30 11:44:38,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321769248] [2023-08-30 11:44:38,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:44:38,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 11:44:38,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:44:38,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 11:44:38,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-08-30 11:44:38,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 334 [2023-08-30 11:44:38,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 275 flow. Second operand has 12 states, 12 states have (on average 122.25) internal successors, (1467), 12 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:38,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:44:38,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 334 [2023-08-30 11:44:38,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:44:46,287 INFO L130 PetriNetUnfolder]: 54413/71683 cut-off events. [2023-08-30 11:44:46,288 INFO L131 PetriNetUnfolder]: For 41741/41885 co-relation queries the response was YES. [2023-08-30 11:44:46,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171461 conditions, 71683 events. 54413/71683 cut-off events. For 41741/41885 co-relation queries the response was YES. Maximal size of possible extension queue 7620. Compared 489057 event pairs, 19277 based on Foata normal form. 4/27484 useless extension candidates. Maximal degree in co-relation 171444. Up to 47529 conditions per place. [2023-08-30 11:44:46,645 INFO L137 encePairwiseOnDemand]: 321/334 looper letters, 86 selfloop transitions, 22 changer transitions 0/110 dead transitions. [2023-08-30 11:44:46,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 110 transitions, 624 flow [2023-08-30 11:44:46,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 11:44:46,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 11:44:46,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1069 transitions. [2023-08-30 11:44:46,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4000748502994012 [2023-08-30 11:44:46,648 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1069 transitions. [2023-08-30 11:44:46,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1069 transitions. [2023-08-30 11:44:46,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:44:46,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1069 transitions. [2023-08-30 11:44:46,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 133.625) internal successors, (1069), 8 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:46,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 334.0) internal successors, (3006), 9 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:46,654 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 334.0) internal successors, (3006), 9 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:46,654 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 275 flow. Second operand 8 states and 1069 transitions. [2023-08-30 11:44:46,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 110 transitions, 624 flow [2023-08-30 11:44:46,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 110 transitions, 623 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:44:46,679 INFO L231 Difference]: Finished difference. Result has 73 places, 63 transitions, 349 flow [2023-08-30 11:44:46,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=349, PETRI_PLACES=73, PETRI_TRANSITIONS=63} [2023-08-30 11:44:46,680 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2023-08-30 11:44:46,680 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 63 transitions, 349 flow [2023-08-30 11:44:46,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.25) internal successors, (1467), 12 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:46,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:44:46,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:44:46,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 11:44:46,883 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 [2023-08-30 11:44:46,883 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:44:46,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:44:46,884 INFO L85 PathProgramCache]: Analyzing trace with hash -163579960, now seen corresponding path program 1 times [2023-08-30 11:44:46,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:44:46,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677259681] [2023-08-30 11:44:46,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:46,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:44:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:46,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:46,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:44:46,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677259681] [2023-08-30 11:44:46,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677259681] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:44:46,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:44:46,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:44:46,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539485867] [2023-08-30 11:44:46,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:44:46,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:44:46,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:44:46,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:44:46,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:44:46,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 334 [2023-08-30 11:44:46,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 63 transitions, 349 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:46,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:44:46,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 334 [2023-08-30 11:44:46,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:44:57,486 INFO L130 PetriNetUnfolder]: 67239/89778 cut-off events. [2023-08-30 11:44:57,486 INFO L131 PetriNetUnfolder]: For 92791/95210 co-relation queries the response was YES. [2023-08-30 11:44:57,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223476 conditions, 89778 events. 67239/89778 cut-off events. For 92791/95210 co-relation queries the response was YES. Maximal size of possible extension queue 9455. Compared 626484 event pairs, 9950 based on Foata normal form. 2299/37981 useless extension candidates. Maximal degree in co-relation 223457. Up to 66155 conditions per place. [2023-08-30 11:44:57,928 INFO L137 encePairwiseOnDemand]: 323/334 looper letters, 82 selfloop transitions, 9 changer transitions 0/96 dead transitions. [2023-08-30 11:44:57,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 96 transitions, 688 flow [2023-08-30 11:44:57,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:44:57,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:44:57,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2023-08-30 11:44:57,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48403193612774453 [2023-08-30 11:44:57,930 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2023-08-30 11:44:57,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2023-08-30 11:44:57,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:44:57,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2023-08-30 11:44:57,932 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) [2023-08-30 11:44:57,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:57,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:57,934 INFO L175 Difference]: Start difference. First operand has 73 places, 63 transitions, 349 flow. Second operand 3 states and 485 transitions. [2023-08-30 11:44:57,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 96 transitions, 688 flow [2023-08-30 11:44:57,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 96 transitions, 679 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 11:44:57,973 INFO L231 Difference]: Finished difference. Result has 74 places, 71 transitions, 416 flow [2023-08-30 11:44:57,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=416, PETRI_PLACES=74, PETRI_TRANSITIONS=71} [2023-08-30 11:44:57,974 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 20 predicate places. [2023-08-30 11:44:57,974 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 71 transitions, 416 flow [2023-08-30 11:44:57,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:57,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:44:57,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:44:57,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 11:44:57,975 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:44:57,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:44:57,975 INFO L85 PathProgramCache]: Analyzing trace with hash -163579858, now seen corresponding path program 1 times [2023-08-30 11:44:57,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:44:57,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248193040] [2023-08-30 11:44:57,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:57,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:44:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:58,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:58,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:44:58,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248193040] [2023-08-30 11:44:58,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248193040] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:44:58,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:44:58,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:44:58,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403907778] [2023-08-30 11:44:58,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:44:58,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:44:58,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:44:58,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:44:58,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:44:58,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 334 [2023-08-30 11:44:58,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 71 transitions, 416 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:58,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:44:58,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 334 [2023-08-30 11:44:58,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:45:10,759 INFO L130 PetriNetUnfolder]: 76820/110533 cut-off events. [2023-08-30 11:45:10,759 INFO L131 PetriNetUnfolder]: For 180322/185890 co-relation queries the response was YES. [2023-08-30 11:45:11,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339326 conditions, 110533 events. 76820/110533 cut-off events. For 180322/185890 co-relation queries the response was YES. Maximal size of possible extension queue 12250. Compared 951075 event pairs, 28603 based on Foata normal form. 3584/74935 useless extension candidates. Maximal degree in co-relation 339304. Up to 64611 conditions per place. [2023-08-30 11:45:11,466 INFO L137 encePairwiseOnDemand]: 330/334 looper letters, 103 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2023-08-30 11:45:11,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 110 transitions, 841 flow [2023-08-30 11:45:11,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:45:11,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:45:11,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2023-08-30 11:45:11,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4820359281437126 [2023-08-30 11:45:11,468 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2023-08-30 11:45:11,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2023-08-30 11:45:11,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:45:11,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2023-08-30 11:45:11,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:11,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:11,470 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:11,470 INFO L175 Difference]: Start difference. First operand has 74 places, 71 transitions, 416 flow. Second operand 3 states and 483 transitions. [2023-08-30 11:45:11,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 110 transitions, 841 flow [2023-08-30 11:45:12,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 110 transitions, 811 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:45:12,510 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 427 flow [2023-08-30 11:45:12,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=427, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2023-08-30 11:45:12,511 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2023-08-30 11:45:12,511 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 427 flow [2023-08-30 11:45:12,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:12,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:45:12,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:45:12,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 11:45:12,512 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:45:12,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:45:12,512 INFO L85 PathProgramCache]: Analyzing trace with hash -163579961, now seen corresponding path program 1 times [2023-08-30 11:45:12,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:45:12,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448957412] [2023-08-30 11:45:12,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:45:12,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:45:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:45:12,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:45:12,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:45:12,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448957412] [2023-08-30 11:45:12,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448957412] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:45:12,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:45:12,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:45:12,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420775473] [2023-08-30 11:45:12,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:45:12,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:45:12,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:45:12,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:45:12,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:45:12,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 334 [2023-08-30 11:45:12,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 427 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:12,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:45:12,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 334 [2023-08-30 11:45:12,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:45:25,249 INFO L130 PetriNetUnfolder]: 74107/108446 cut-off events. [2023-08-30 11:45:25,249 INFO L131 PetriNetUnfolder]: For 152718/158589 co-relation queries the response was YES. [2023-08-30 11:45:25,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331556 conditions, 108446 events. 74107/108446 cut-off events. For 152718/158589 co-relation queries the response was YES. Maximal size of possible extension queue 13320. Compared 959117 event pairs, 15492 based on Foata normal form. 6635/70699 useless extension candidates. Maximal degree in co-relation 331534. Up to 82923 conditions per place. [2023-08-30 11:45:25,909 INFO L137 encePairwiseOnDemand]: 323/334 looper letters, 92 selfloop transitions, 14 changer transitions 0/111 dead transitions. [2023-08-30 11:45:25,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 111 transitions, 848 flow [2023-08-30 11:45:25,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:45:25,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:45:25,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2023-08-30 11:45:25,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48403193612774453 [2023-08-30 11:45:25,913 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2023-08-30 11:45:25,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2023-08-30 11:45:25,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:45:25,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2023-08-30 11:45:25,914 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) [2023-08-30 11:45:25,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:25,916 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:25,916 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 427 flow. Second operand 3 states and 485 transitions. [2023-08-30 11:45:25,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 111 transitions, 848 flow [2023-08-30 11:45:26,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 111 transitions, 843 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:45:26,045 INFO L231 Difference]: Finished difference. Result has 78 places, 86 transitions, 584 flow [2023-08-30 11:45:26,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=584, PETRI_PLACES=78, PETRI_TRANSITIONS=86} [2023-08-30 11:45:26,046 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 24 predicate places. [2023-08-30 11:45:26,046 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 86 transitions, 584 flow [2023-08-30 11:45:26,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:26,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:45:26,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:45:26,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 11:45:26,047 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:45:26,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:45:26,047 INFO L85 PathProgramCache]: Analyzing trace with hash -163579964, now seen corresponding path program 1 times [2023-08-30 11:45:26,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:45:26,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290503768] [2023-08-30 11:45:26,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:45:26,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:45:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:45:26,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:45:26,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:45:26,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290503768] [2023-08-30 11:45:26,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290503768] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:45:26,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:45:26,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:45:26,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765599762] [2023-08-30 11:45:26,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:45:26,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:45:26,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:45:26,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:45:26,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:45:26,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 334 [2023-08-30 11:45:26,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 86 transitions, 584 flow. Second operand has 5 states, 5 states have (on average 131.4) internal successors, (657), 5 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:26,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:45:26,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 334 [2023-08-30 11:45:26,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:45:39,268 INFO L130 PetriNetUnfolder]: 75998/111799 cut-off events. [2023-08-30 11:45:39,268 INFO L131 PetriNetUnfolder]: For 232916/236074 co-relation queries the response was YES. [2023-08-30 11:45:39,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392883 conditions, 111799 events. 75998/111799 cut-off events. For 232916/236074 co-relation queries the response was YES. Maximal size of possible extension queue 12171. Compared 972460 event pairs, 52129 based on Foata normal form. 3300/78231 useless extension candidates. Maximal degree in co-relation 392858. Up to 110626 conditions per place. [2023-08-30 11:45:39,957 INFO L137 encePairwiseOnDemand]: 325/334 looper letters, 112 selfloop transitions, 4 changer transitions 2/122 dead transitions. [2023-08-30 11:45:39,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 122 transitions, 971 flow [2023-08-30 11:45:39,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:45:39,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:45:39,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 728 transitions. [2023-08-30 11:45:39,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4359281437125748 [2023-08-30 11:45:39,960 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 728 transitions. [2023-08-30 11:45:39,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 728 transitions. [2023-08-30 11:45:39,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:45:39,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 728 transitions. [2023-08-30 11:45:39,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:39,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 334.0) internal successors, (2004), 6 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:39,965 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 334.0) internal successors, (2004), 6 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:39,965 INFO L175 Difference]: Start difference. First operand has 78 places, 86 transitions, 584 flow. Second operand 5 states and 728 transitions. [2023-08-30 11:45:39,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 122 transitions, 971 flow [2023-08-30 11:45:40,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 122 transitions, 931 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:45:40,437 INFO L231 Difference]: Finished difference. Result has 82 places, 87 transitions, 593 flow [2023-08-30 11:45:40,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=593, PETRI_PLACES=82, PETRI_TRANSITIONS=87} [2023-08-30 11:45:40,438 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 28 predicate places. [2023-08-30 11:45:40,438 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 87 transitions, 593 flow [2023-08-30 11:45:40,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 131.4) internal successors, (657), 5 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:40,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:45:40,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:45:40,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 11:45:40,439 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:45:40,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:45:40,439 INFO L85 PathProgramCache]: Analyzing trace with hash -421638827, now seen corresponding path program 1 times [2023-08-30 11:45:40,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:45:40,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558227292] [2023-08-30 11:45:40,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:45:40,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:45:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:45:40,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:45:40,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:45:40,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558227292] [2023-08-30 11:45:40,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558227292] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:45:40,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799137379] [2023-08-30 11:45:40,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:45:40,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:45:40,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:45:40,644 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:45:40,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 11:45:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:45:41,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 11:45:41,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:45:41,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 11:45:41,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:45:41,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 11:45:41,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:45:41,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 11:45:41,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:45:41,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:45:41,186 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_382 (Array Int Int))) (< 0 (+ 9223372039002259456 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_382) c_~A~0.base) c_~A~0.offset)))) is different from false [2023-08-30 11:45:41,230 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:45:41,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-30 11:45:41,238 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:45:41,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 135 [2023-08-30 11:45:41,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-08-30 11:45:41,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2023-08-30 11:45:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:45:41,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799137379] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:45:41,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:45:41,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-30 11:45:41,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084231041] [2023-08-30 11:45:41,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:45:41,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 11:45:41,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:45:41,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 11:45:41,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=141, Unknown=3, NotChecked=24, Total=210 [2023-08-30 11:45:41,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 334 [2023-08-30 11:45:41,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 87 transitions, 593 flow. Second operand has 15 states, 15 states have (on average 110.26666666666667) internal successors, (1654), 15 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:41,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:45:41,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 334 [2023-08-30 11:45:41,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand