./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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/goblint-regression/28-race_reach_91-arrayloop2_racefree.i -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 ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 14:29:48,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:29:48,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:29:48,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:29:48,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:29:48,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:29:48,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:29:48,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:29:48,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:29:48,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:29:48,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:29:48,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:29:48,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:29:48,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:29:48,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:29:48,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:29:48,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:29:48,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:29:48,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:29:48,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:29:48,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:29:48,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:29:48,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:29:48,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:29:48,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:29:48,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:29:48,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:29:48,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:29:48,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:29:48,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:29:48,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:29:48,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:29:48,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:29:48,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:29:48,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:29:48,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:29:48,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:29:48,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:29:48,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:29:48,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:29:48,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:29:48,116 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:29:48,141 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:29:48,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:29:48,142 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:29:48,142 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:29:48,143 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:29:48,143 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:29:48,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:29:48,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:29:48,144 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:29:48,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:29:48,145 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:29:48,145 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:29:48,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:29:48,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:29:48,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:29:48,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:29:48,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:29:48,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:29:48,147 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:29:48,147 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:29:48,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:29:48,147 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:29:48,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:29:48,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:29:48,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:29:48,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:29:48,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:29:48,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:29:48,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:29:48,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:29:48,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:29:48,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:29:48,149 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:29:48,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:29:48,150 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:29:48,150 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:29:48,150 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:29:48,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:29:48,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:29:48,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:29:48,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:29:48,460 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:29:48,460 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:29:48,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2023-08-30 14:29:49,515 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:29:49,823 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:29:49,824 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2023-08-30 14:29:49,843 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/030c43d66/feef5b00e9d14219973e81e5ada61cd2/FLAG3e04eb46a [2023-08-30 14:29:49,861 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/030c43d66/feef5b00e9d14219973e81e5ada61cd2 [2023-08-30 14:29:49,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:29:49,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:29:49,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:29:49,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:29:49,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:29:49,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:29:49" (1/1) ... [2023-08-30 14:29:49,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ad14234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:29:49, skipping insertion in model container [2023-08-30 14:29:49,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:29:49" (1/1) ... [2023-08-30 14:29:49,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:29:49,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:29:50,267 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i[47038,47051] [2023-08-30 14:29:50,279 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 14:29:50,280 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 14:29:50,280 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 14:29:50,281 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 14:29:50,311 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:29:50,335 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:29:50,388 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i[47038,47051] [2023-08-30 14:29:50,397 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 14:29:50,398 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 14:29:50,398 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 14:29:50,399 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 14:29:50,407 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:29:50,483 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:29:50,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:29:50 WrapperNode [2023-08-30 14:29:50,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:29:50,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:29:50,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:29:50,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:29:50,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:29:50" (1/1) ... [2023-08-30 14:29:50,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:29:50" (1/1) ... [2023-08-30 14:29:50,557 INFO L138 Inliner]: procedures = 277, calls = 45, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 200 [2023-08-30 14:29:50,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:29:50,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:29:50,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:29:50,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:29:50,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:29:50" (1/1) ... [2023-08-30 14:29:50,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:29:50" (1/1) ... [2023-08-30 14:29:50,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:29:50" (1/1) ... [2023-08-30 14:29:50,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:29:50" (1/1) ... [2023-08-30 14:29:50,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:29:50" (1/1) ... [2023-08-30 14:29:50,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:29:50" (1/1) ... [2023-08-30 14:29:50,611 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:29:50" (1/1) ... [2023-08-30 14:29:50,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:29:50" (1/1) ... [2023-08-30 14:29:50,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:29:50,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:29:50,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:29:50,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:29:50,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:29:50" (1/1) ... [2023-08-30 14:29:50,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:29:50,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:29:50,653 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 14:29:50,661 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 14:29:50,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:29:50,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 14:29:50,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:29:50,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:29:50,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:29:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:29:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 14:29:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:29:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 14:29:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:29:50,690 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:29:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:29:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:29:50,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:29:50,692 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 14:29:50,891 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:29:50,893 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:29:51,248 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:29:51,255 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:29:51,255 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-30 14:29:51,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:29:51 BoogieIcfgContainer [2023-08-30 14:29:51,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:29:51,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:29:51,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:29:51,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:29:51,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:29:49" (1/3) ... [2023-08-30 14:29:51,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c9be640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:29:51, skipping insertion in model container [2023-08-30 14:29:51,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:29:50" (2/3) ... [2023-08-30 14:29:51,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c9be640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:29:51, skipping insertion in model container [2023-08-30 14:29:51,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:29:51" (3/3) ... [2023-08-30 14:29:51,263 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2023-08-30 14:29:51,269 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:29:51,276 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:29:51,277 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-30 14:29:51,277 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:29:51,335 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:29:51,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 215 transitions, 438 flow [2023-08-30 14:29:51,439 INFO L130 PetriNetUnfolder]: 26/231 cut-off events. [2023-08-30 14:29:51,439 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-30 14:29:51,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 231 events. 26/231 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 660 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 123. Up to 4 conditions per place. [2023-08-30 14:29:51,445 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 215 transitions, 438 flow [2023-08-30 14:29:51,454 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 212 transitions, 432 flow [2023-08-30 14:29:51,458 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:29:51,468 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 212 transitions, 432 flow [2023-08-30 14:29:51,474 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 212 transitions, 432 flow [2023-08-30 14:29:51,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 212 transitions, 432 flow [2023-08-30 14:29:51,530 INFO L130 PetriNetUnfolder]: 25/228 cut-off events. [2023-08-30 14:29:51,530 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-30 14:29:51,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 228 events. 25/228 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 646 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 123. Up to 4 conditions per place. [2023-08-30 14:29:51,537 INFO L119 LiptonReduction]: Number of co-enabled transitions 5096 [2023-08-30 14:30:16,105 WARN L222 SmtUtils]: Spent 5.21s on a formula simplification that was a NOOP. DAG size: 176 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 14:30:31,430 WARN L222 SmtUtils]: Spent 6.55s on a formula simplification. DAG size of input: 179 DAG size of output: 177 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 14:30:49,294 WARN L222 SmtUtils]: Spent 13.00s on a formula simplification. DAG size of input: 179 DAG size of output: 177 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 14:30:54,851 WARN L222 SmtUtils]: Spent 5.55s on a formula simplification that was a NOOP. DAG size: 177 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 14:31:06,044 WARN L222 SmtUtils]: Spent 11.08s on a formula simplification. DAG size of input: 184 DAG size of output: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 14:31:11,453 WARN L222 SmtUtils]: Spent 5.40s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 14:31:30,780 WARN L222 SmtUtils]: Spent 19.32s on a formula simplification. DAG size of input: 184 DAG size of output: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 14:31:41,202 WARN L222 SmtUtils]: Spent 10.42s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 14:31:41,206 INFO L134 LiptonReduction]: Checked pairs total: 5652 [2023-08-30 14:31:41,206 INFO L136 LiptonReduction]: Total number of compositions: 210 [2023-08-30 14:31:41,218 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:31:41,222 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;@5c79b458, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:31:41,222 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-30 14:31:41,226 INFO L130 PetriNetUnfolder]: 2/8 cut-off events. [2023-08-30 14:31:41,226 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:31:41,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:31:41,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:31:41,227 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:31:41,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:31:41,231 INFO L85 PathProgramCache]: Analyzing trace with hash 859495, now seen corresponding path program 1 times [2023-08-30 14:31:41,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:31:41,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910340842] [2023-08-30 14:31:41,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:41,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:31:41,379 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:31:41,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140266596] [2023-08-30 14:31:41,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:41,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:41,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:31:41,385 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 14:31:41,409 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 14:31:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:31:41,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:31:41,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:31:41,551 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 14:31:41,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:31:41,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:31:41,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910340842] [2023-08-30 14:31:41,552 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:31:41,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140266596] [2023-08-30 14:31:41,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140266596] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:31:41,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:31:41,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:31:41,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727518260] [2023-08-30 14:31:41,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:31:41,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:31:41,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:31:41,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:31:41,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:31:41,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 425 [2023-08-30 14:31:41,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 52 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 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 14:31:41,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:31:41,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 425 [2023-08-30 14:31:41,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:31:41,866 INFO L130 PetriNetUnfolder]: 102/232 cut-off events. [2023-08-30 14:31:41,867 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:31:41,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 232 events. 102/232 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 847 event pairs, 80 based on Foata normal form. 12/134 useless extension candidates. Maximal degree in co-relation 404. Up to 209 conditions per place. [2023-08-30 14:31:41,872 INFO L137 encePairwiseOnDemand]: 406/425 looper letters, 38 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-08-30 14:31:41,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 45 transitions, 180 flow [2023-08-30 14:31:41,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:31:41,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:31:41,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 622 transitions. [2023-08-30 14:31:41,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48784313725490197 [2023-08-30 14:31:41,901 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 622 transitions. [2023-08-30 14:31:41,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 622 transitions. [2023-08-30 14:31:41,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:31:41,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 622 transitions. [2023-08-30 14:31:41,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 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 14:31:41,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 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 14:31:41,919 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 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 14:31:41,921 INFO L175 Difference]: Start difference. First operand has 41 places, 52 transitions, 112 flow. Second operand 3 states and 622 transitions. [2023-08-30 14:31:41,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 45 transitions, 180 flow [2023-08-30 14:31:41,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:31:41,927 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 120 flow [2023-08-30 14:31:41,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2023-08-30 14:31:41,933 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2023-08-30 14:31:41,933 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 120 flow [2023-08-30 14:31:41,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 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 14:31:41,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:31:41,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:31:41,942 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 14:31:42,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-08-30 14:31:42,139 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:31:42,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:31:42,140 INFO L85 PathProgramCache]: Analyzing trace with hash 859667, now seen corresponding path program 1 times [2023-08-30 14:31:42,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:31:42,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525303657] [2023-08-30 14:31:42,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:42,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:31:42,188 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:31:42,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [280648920] [2023-08-30 14:31:42,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:42,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:42,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:31:42,193 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 14:31:42,203 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 14:31:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:31:42,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:31:42,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:31:42,395 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 14:31:42,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:31:42,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:31:42,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525303657] [2023-08-30 14:31:42,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:31:42,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280648920] [2023-08-30 14:31:42,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280648920] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:31:42,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:31:42,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:31:42,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535410421] [2023-08-30 14:31:42,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:31:42,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:31:42,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:31:42,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:31:42,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:31:42,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 425 [2023-08-30 14:31:42,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 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 14:31:42,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:31:42,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 425 [2023-08-30 14:31:42,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:31:42,592 INFO L130 PetriNetUnfolder]: 101/230 cut-off events. [2023-08-30 14:31:42,592 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 14:31:42,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 230 events. 101/230 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 842 event pairs, 80 based on Foata normal form. 2/127 useless extension candidates. Maximal degree in co-relation 443. Up to 210 conditions per place. [2023-08-30 14:31:42,593 INFO L137 encePairwiseOnDemand]: 423/425 looper letters, 37 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-30 14:31:42,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 188 flow [2023-08-30 14:31:42,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:31:42,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:31:42,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2023-08-30 14:31:42,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4768627450980392 [2023-08-30 14:31:42,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2023-08-30 14:31:42,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2023-08-30 14:31:42,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:31:42,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2023-08-30 14:31:42,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 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 14:31:42,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 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 14:31:42,602 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 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 14:31:42,602 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 120 flow. Second operand 3 states and 608 transitions. [2023-08-30 14:31:42,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 188 flow [2023-08-30 14:31:42,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:31:42,604 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 113 flow [2023-08-30 14:31:42,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2023-08-30 14:31:42,605 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2023-08-30 14:31:42,605 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 113 flow [2023-08-30 14:31:42,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 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 14:31:42,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:31:42,606 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-08-30 14:31:42,613 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 14:31:42,811 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,SelfDestructingSolverStorable1 [2023-08-30 14:31:42,812 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:31:42,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:31:42,813 INFO L85 PathProgramCache]: Analyzing trace with hash 826122189, now seen corresponding path program 1 times [2023-08-30 14:31:42,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:31:42,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127026289] [2023-08-30 14:31:42,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:42,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:31:42,873 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:31:42,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410089834] [2023-08-30 14:31:42,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:42,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:42,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:31:42,875 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 14:31:42,876 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 14:31:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:31:42,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-30 14:31:42,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:31:42,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:31:42,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:31:42,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:31:42,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127026289] [2023-08-30 14:31:42,977 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:31:42,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410089834] [2023-08-30 14:31:42,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410089834] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:31:42,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:31:42,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:31:42,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404654752] [2023-08-30 14:31:42,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:31:42,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:31:42,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:31:42,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:31:42,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:31:43,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 425 [2023-08-30 14:31:43,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 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 14:31:43,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:31:43,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 425 [2023-08-30 14:31:43,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:31:43,195 INFO L130 PetriNetUnfolder]: 101/234 cut-off events. [2023-08-30 14:31:43,195 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:31:43,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 234 events. 101/234 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 857 event pairs, 80 based on Foata normal form. 1/129 useless extension candidates. Maximal degree in co-relation 459. Up to 212 conditions per place. [2023-08-30 14:31:43,197 INFO L137 encePairwiseOnDemand]: 420/425 looper letters, 38 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-08-30 14:31:43,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 205 flow [2023-08-30 14:31:43,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:31:43,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:31:43,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 612 transitions. [2023-08-30 14:31:43,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48 [2023-08-30 14:31:43,200 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 612 transitions. [2023-08-30 14:31:43,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 612 transitions. [2023-08-30 14:31:43,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:31:43,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 612 transitions. [2023-08-30 14:31:43,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 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 14:31:43,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 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 14:31:43,205 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 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 14:31:43,205 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 113 flow. Second operand 3 states and 612 transitions. [2023-08-30 14:31:43,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 205 flow [2023-08-30 14:31:43,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 205 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:31:43,207 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 134 flow [2023-08-30 14:31:43,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-08-30 14:31:43,208 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2023-08-30 14:31:43,208 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 134 flow [2023-08-30 14:31:43,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 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 14:31:43,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:31:43,209 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 14:31:43,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 14:31:43,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:43,415 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:31:43,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:31:43,415 INFO L85 PathProgramCache]: Analyzing trace with hash -158612272, now seen corresponding path program 1 times [2023-08-30 14:31:43,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:31:43,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893025268] [2023-08-30 14:31:43,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:43,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:31:43,470 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:31:43,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [873869824] [2023-08-30 14:31:43,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:43,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:43,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:31:43,473 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 14:31:43,475 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 14:31:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:31:43,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:31:43,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:31:43,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:31:43,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:31:43,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:31:43,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:31:43,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893025268] [2023-08-30 14:31:43,664 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:31:43,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873869824] [2023-08-30 14:31:43,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873869824] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:31:43,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 14:31:43,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-30 14:31:43,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514184473] [2023-08-30 14:31:43,664 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 14:31:43,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:31:43,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:31:43,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:31:43,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:31:43,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 425 [2023-08-30 14:31:43,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 134 flow. Second operand has 6 states, 6 states have (on average 190.5) internal successors, (1143), 6 states have internal predecessors, (1143), 0 states have call successors, (0), 0 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 14:31:43,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:31:43,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 425 [2023-08-30 14:31:43,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:31:44,376 INFO L130 PetriNetUnfolder]: 103/246 cut-off events. [2023-08-30 14:31:44,376 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 14:31:44,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 246 events. 103/246 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 918 event pairs, 80 based on Foata normal form. 6/144 useless extension candidates. Maximal degree in co-relation 506. Up to 210 conditions per place. [2023-08-30 14:31:44,378 INFO L137 encePairwiseOnDemand]: 418/425 looper letters, 42 selfloop transitions, 8 changer transitions 0/54 dead transitions. [2023-08-30 14:31:44,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 278 flow [2023-08-30 14:31:44,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:31:44,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:31:44,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1191 transitions. [2023-08-30 14:31:44,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46705882352941175 [2023-08-30 14:31:44,382 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1191 transitions. [2023-08-30 14:31:44,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1191 transitions. [2023-08-30 14:31:44,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:31:44,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1191 transitions. [2023-08-30 14:31:44,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 198.5) internal successors, (1191), 6 states have internal predecessors, (1191), 0 states have call successors, (0), 0 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 14:31:44,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 0 states have call successors, (0), 0 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 14:31:44,392 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 0 states have call successors, (0), 0 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 14:31:44,392 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 134 flow. Second operand 6 states and 1191 transitions. [2023-08-30 14:31:44,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 278 flow [2023-08-30 14:31:44,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 54 transitions, 275 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:31:44,394 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 210 flow [2023-08-30 14:31:44,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-08-30 14:31:44,395 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2023-08-30 14:31:44,395 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 210 flow [2023-08-30 14:31:44,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.5) internal successors, (1143), 6 states have internal predecessors, (1143), 0 states have call successors, (0), 0 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 14:31:44,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:31:44,396 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-30 14:31:44,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 14:31:44,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:44,602 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:31:44,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:31:44,603 INFO L85 PathProgramCache]: Analyzing trace with hash 639649933, now seen corresponding path program 2 times [2023-08-30 14:31:44,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:31:44,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864456066] [2023-08-30 14:31:44,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:44,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:31:44,668 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:31:44,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1924175869] [2023-08-30 14:31:44,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:31:44,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:44,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:31:44,669 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 14:31:44,680 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 14:31:44,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:31:44,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:31:44,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:31:44,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:31:44,894 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-30 14:31:44,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:31:44,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:31:44,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864456066] [2023-08-30 14:31:44,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:31:44,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924175869] [2023-08-30 14:31:44,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924175869] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:31:44,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:31:44,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:31:44,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695032882] [2023-08-30 14:31:44,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:31:44,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:31:44,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:31:44,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:31:44,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:31:44,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 425 [2023-08-30 14:31:44,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 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 14:31:44,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:31:44,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 425 [2023-08-30 14:31:44,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:31:45,083 INFO L130 PetriNetUnfolder]: 103/244 cut-off events. [2023-08-30 14:31:45,084 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-30 14:31:45,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 244 events. 103/244 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 910 event pairs, 80 based on Foata normal form. 1/138 useless extension candidates. Maximal degree in co-relation 538. Up to 224 conditions per place. [2023-08-30 14:31:45,085 INFO L137 encePairwiseOnDemand]: 421/425 looper letters, 41 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-08-30 14:31:45,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 298 flow [2023-08-30 14:31:45,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:31:45,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:31:45,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 603 transitions. [2023-08-30 14:31:45,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47294117647058825 [2023-08-30 14:31:45,088 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 603 transitions. [2023-08-30 14:31:45,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 603 transitions. [2023-08-30 14:31:45,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:31:45,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 603 transitions. [2023-08-30 14:31:45,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 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 14:31:45,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 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 14:31:45,094 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 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 14:31:45,094 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 210 flow. Second operand 3 states and 603 transitions. [2023-08-30 14:31:45,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 298 flow [2023-08-30 14:31:45,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 48 transitions, 287 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 14:31:45,097 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 212 flow [2023-08-30 14:31:45,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2023-08-30 14:31:45,098 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2023-08-30 14:31:45,098 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 212 flow [2023-08-30 14:31:45,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 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 14:31:45,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:31:45,099 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-08-30 14:31:45,113 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 14:31:45,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:45,307 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:31:45,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:31:45,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1645685492, now seen corresponding path program 3 times [2023-08-30 14:31:45,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:31:45,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404278321] [2023-08-30 14:31:45,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:45,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:31:45,373 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:31:45,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109910793] [2023-08-30 14:31:45,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 14:31:45,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:45,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:31:45,374 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 14:31:45,394 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 14:31:45,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 14:31:45,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:31:45,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 14:31:45,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:31:45,741 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:31:45,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:31:45,985 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:31:45,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:31:45,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404278321] [2023-08-30 14:31:45,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:31:45,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109910793] [2023-08-30 14:31:45,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109910793] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:31:45,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 14:31:45,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-08-30 14:31:45,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375530515] [2023-08-30 14:31:45,986 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 14:31:45,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 14:31:45,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:31:45,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 14:31:45,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-08-30 14:31:46,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 425 [2023-08-30 14:31:46,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 212 flow. Second operand has 10 states, 10 states have (on average 183.4) internal successors, (1834), 10 states have internal predecessors, (1834), 0 states have call successors, (0), 0 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 14:31:46,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:31:46,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 425 [2023-08-30 14:31:46,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:31:49,283 INFO L130 PetriNetUnfolder]: 203/472 cut-off events. [2023-08-30 14:31:49,283 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2023-08-30 14:31:49,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 472 events. 203/472 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1937 event pairs, 160 based on Foata normal form. 2/268 useless extension candidates. Maximal degree in co-relation 1007. Up to 208 conditions per place. [2023-08-30 14:31:49,286 INFO L137 encePairwiseOnDemand]: 416/425 looper letters, 72 selfloop transitions, 15 changer transitions 0/91 dead transitions. [2023-08-30 14:31:49,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 91 transitions, 558 flow [2023-08-30 14:31:49,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 14:31:49,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 14:31:49,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2086 transitions. [2023-08-30 14:31:49,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44620320855614976 [2023-08-30 14:31:49,292 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2086 transitions. [2023-08-30 14:31:49,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2086 transitions. [2023-08-30 14:31:49,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:31:49,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2086 transitions. [2023-08-30 14:31:49,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 189.63636363636363) internal successors, (2086), 11 states have internal predecessors, (2086), 0 states have call successors, (0), 0 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 14:31:49,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 425.0) internal successors, (5100), 12 states have internal predecessors, (5100), 0 states have call successors, (0), 0 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 14:31:49,303 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 425.0) internal successors, (5100), 12 states have internal predecessors, (5100), 0 states have call successors, (0), 0 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 14:31:49,303 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 212 flow. Second operand 11 states and 2086 transitions. [2023-08-30 14:31:49,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 91 transitions, 558 flow [2023-08-30 14:31:49,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 91 transitions, 544 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:31:49,306 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 334 flow [2023-08-30 14:31:49,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=334, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2023-08-30 14:31:49,307 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 27 predicate places. [2023-08-30 14:31:49,307 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 334 flow [2023-08-30 14:31:49,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 183.4) internal successors, (1834), 10 states have internal predecessors, (1834), 0 states have call successors, (0), 0 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 14:31:49,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:31:49,309 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 2, 1, 1, 1] [2023-08-30 14:31:49,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 14:31:49,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:49,515 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:31:49,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:31:49,515 INFO L85 PathProgramCache]: Analyzing trace with hash 523360265, now seen corresponding path program 1 times [2023-08-30 14:31:49,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:31:49,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313743894] [2023-08-30 14:31:49,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:49,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:31:49,592 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:31:49,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1510719708] [2023-08-30 14:31:49,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:49,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:49,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:31:49,594 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:31:49,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 14:31:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:31:50,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 1536 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:31:50,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:31:50,110 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 14:31:50,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:31:50,168 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 14:31:50,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:31:50,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313743894] [2023-08-30 14:31:50,168 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:31:50,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510719708] [2023-08-30 14:31:50,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510719708] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:31:50,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 14:31:50,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-30 14:31:50,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235958802] [2023-08-30 14:31:50,170 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 14:31:50,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 14:31:50,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:31:50,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 14:31:50,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 14:31:50,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 425 [2023-08-30 14:31:50,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 334 flow. Second operand has 12 states, 12 states have (on average 190.33333333333334) internal successors, (2284), 12 states have internal predecessors, (2284), 0 states have call successors, (0), 0 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 14:31:50,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:31:50,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 425 [2023-08-30 14:31:50,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:31:51,146 INFO L130 PetriNetUnfolder]: 203/508 cut-off events. [2023-08-30 14:31:51,147 INFO L131 PetriNetUnfolder]: For 410/410 co-relation queries the response was YES. [2023-08-30 14:31:51,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1254 conditions, 508 events. 203/508 cut-off events. For 410/410 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1935 event pairs, 160 based on Foata normal form. 18/323 useless extension candidates. Maximal degree in co-relation 1227. Up to 412 conditions per place. [2023-08-30 14:31:51,150 INFO L137 encePairwiseOnDemand]: 419/425 looper letters, 59 selfloop transitions, 21 changer transitions 0/84 dead transitions. [2023-08-30 14:31:51,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 84 transitions, 751 flow [2023-08-30 14:31:51,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:31:51,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:31:51,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2342 transitions. [2023-08-30 14:31:51,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4592156862745098 [2023-08-30 14:31:51,156 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2342 transitions. [2023-08-30 14:31:51,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2342 transitions. [2023-08-30 14:31:51,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:31:51,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2342 transitions. [2023-08-30 14:31:51,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 195.16666666666666) internal successors, (2342), 12 states have internal predecessors, (2342), 0 states have call successors, (0), 0 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 14:31:51,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 425.0) internal successors, (5525), 13 states have internal predecessors, (5525), 0 states have call successors, (0), 0 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 14:31:51,169 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 425.0) internal successors, (5525), 13 states have internal predecessors, (5525), 0 states have call successors, (0), 0 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 14:31:51,169 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 334 flow. Second operand 12 states and 2342 transitions. [2023-08-30 14:31:51,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 84 transitions, 751 flow [2023-08-30 14:31:51,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 84 transitions, 721 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-08-30 14:31:51,184 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 494 flow [2023-08-30 14:31:51,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=494, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2023-08-30 14:31:51,185 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 42 predicate places. [2023-08-30 14:31:51,185 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 494 flow [2023-08-30 14:31:51,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 190.33333333333334) internal successors, (2284), 12 states have internal predecessors, (2284), 0 states have call successors, (0), 0 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 14:31:51,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:31:51,186 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 2, 1, 1, 1] [2023-08-30 14:31:51,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 14:31:51,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:51,395 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:31:51,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:31:51,395 INFO L85 PathProgramCache]: Analyzing trace with hash 811768105, now seen corresponding path program 2 times [2023-08-30 14:31:51,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:31:51,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291064186] [2023-08-30 14:31:51,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:51,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:31:51,535 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:31:51,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1845673230] [2023-08-30 14:31:51,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:31:51,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:51,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:31:51,537 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:31:51,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 14:31:52,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 14:31:52,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:31:52,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 2940 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 14:31:52,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:31:52,530 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 34 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 14:31:52,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:31:52,718 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 34 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 14:31:52,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:31:52,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291064186] [2023-08-30 14:31:52,718 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:31:52,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845673230] [2023-08-30 14:31:52,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845673230] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:31:52,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 14:31:52,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-30 14:31:52,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943448708] [2023-08-30 14:31:52,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 14:31:52,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 14:31:52,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:31:52,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 14:31:52,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-30 14:31:52,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 425 [2023-08-30 14:31:52,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 494 flow. Second operand has 24 states, 24 states have (on average 190.16666666666666) internal successors, (4564), 24 states have internal predecessors, (4564), 0 states have call successors, (0), 0 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 14:31:52,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:31:52,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 425 [2023-08-30 14:31:52,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:31:55,117 INFO L130 PetriNetUnfolder]: 203/580 cut-off events. [2023-08-30 14:31:55,117 INFO L131 PetriNetUnfolder]: For 2393/2393 co-relation queries the response was YES. [2023-08-30 14:31:55,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 580 events. 203/580 cut-off events. For 2393/2393 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2102 event pairs, 160 based on Foata normal form. 36/413 useless extension candidates. Maximal degree in co-relation 1799. Up to 412 conditions per place. [2023-08-30 14:31:55,121 INFO L137 encePairwiseOnDemand]: 419/425 looper letters, 95 selfloop transitions, 33 changer transitions 0/132 dead transitions. [2023-08-30 14:31:55,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 132 transitions, 1580 flow [2023-08-30 14:31:55,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 14:31:55,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 14:31:55,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4658 transitions. [2023-08-30 14:31:55,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45666666666666667 [2023-08-30 14:31:55,131 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4658 transitions. [2023-08-30 14:31:55,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4658 transitions. [2023-08-30 14:31:55,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:31:55,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4658 transitions. [2023-08-30 14:31:55,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 194.08333333333334) internal successors, (4658), 24 states have internal predecessors, (4658), 0 states have call successors, (0), 0 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 14:31:55,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 425.0) internal successors, (10625), 25 states have internal predecessors, (10625), 0 states have call successors, (0), 0 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 14:31:55,154 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 425.0) internal successors, (10625), 25 states have internal predecessors, (10625), 0 states have call successors, (0), 0 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 14:31:55,155 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 494 flow. Second operand 24 states and 4658 transitions. [2023-08-30 14:31:55,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 132 transitions, 1580 flow [2023-08-30 14:31:55,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 132 transitions, 1466 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-08-30 14:31:55,164 INFO L231 Difference]: Finished difference. Result has 115 places, 81 transitions, 772 flow [2023-08-30 14:31:55,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=772, PETRI_PLACES=115, PETRI_TRANSITIONS=81} [2023-08-30 14:31:55,165 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 74 predicate places. [2023-08-30 14:31:55,165 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 81 transitions, 772 flow [2023-08-30 14:31:55,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 190.16666666666666) internal successors, (4564), 24 states have internal predecessors, (4564), 0 states have call successors, (0), 0 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 14:31:55,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:31:55,167 INFO L208 CegarLoopForPetriNet]: trace histogram [24, 2, 1, 1, 1] [2023-08-30 14:31:55,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 14:31:55,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-08-30 14:31:55,374 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:31:55,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:31:55,374 INFO L85 PathProgramCache]: Analyzing trace with hash 780014441, now seen corresponding path program 3 times [2023-08-30 14:31:55,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:31:55,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243328106] [2023-08-30 14:31:55,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:55,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:31:55,598 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:31:55,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705367809] [2023-08-30 14:31:55,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 14:31:55,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:55,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:31:55,603 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:31:55,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 14:31:56,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 14:31:56,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:31:56,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 14:31:56,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:31:56,650 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-08-30 14:31:56,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:31:56,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:31:56,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243328106] [2023-08-30 14:31:56,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:31:56,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705367809] [2023-08-30 14:31:56,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705367809] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:31:56,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:31:56,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 14:31:56,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672753584] [2023-08-30 14:31:56,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:31:56,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:31:56,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:31:56,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:31:56,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:31:56,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 425 [2023-08-30 14:31:56,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 81 transitions, 772 flow. Second operand has 7 states, 7 states have (on average 186.14285714285714) internal successors, (1303), 7 states have internal predecessors, (1303), 0 states have call successors, (0), 0 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 14:31:56,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:31:56,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 425 [2023-08-30 14:31:56,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:31:57,280 INFO L130 PetriNetUnfolder]: 201/536 cut-off events. [2023-08-30 14:31:57,280 INFO L131 PetriNetUnfolder]: For 1414/1414 co-relation queries the response was YES. [2023-08-30 14:31:57,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 536 events. 201/536 cut-off events. For 1414/1414 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1868 event pairs, 160 based on Foata normal form. 43/377 useless extension candidates. Maximal degree in co-relation 1519. Up to 468 conditions per place. [2023-08-30 14:31:57,284 INFO L137 encePairwiseOnDemand]: 419/425 looper letters, 79 selfloop transitions, 9 changer transitions 0/92 dead transitions. [2023-08-30 14:31:57,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 92 transitions, 993 flow [2023-08-30 14:31:57,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:31:57,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:31:57,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1151 transitions. [2023-08-30 14:31:57,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4513725490196078 [2023-08-30 14:31:57,292 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1151 transitions. [2023-08-30 14:31:57,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1151 transitions. [2023-08-30 14:31:57,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:31:57,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1151 transitions. [2023-08-30 14:31:57,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 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 14:31:57,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 0 states have call successors, (0), 0 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 14:31:57,299 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 0 states have call successors, (0), 0 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 14:31:57,299 INFO L175 Difference]: Start difference. First operand has 115 places, 81 transitions, 772 flow. Second operand 6 states and 1151 transitions. [2023-08-30 14:31:57,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 92 transitions, 993 flow [2023-08-30 14:31:57,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 92 transitions, 885 flow, removed 28 selfloop flow, removed 11 redundant places. [2023-08-30 14:31:57,310 INFO L231 Difference]: Finished difference. Result has 107 places, 71 transitions, 561 flow [2023-08-30 14:31:57,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=561, PETRI_PLACES=107, PETRI_TRANSITIONS=71} [2023-08-30 14:31:57,312 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 66 predicate places. [2023-08-30 14:31:57,312 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 71 transitions, 561 flow [2023-08-30 14:31:57,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 186.14285714285714) internal successors, (1303), 7 states have internal predecessors, (1303), 0 states have call successors, (0), 0 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 14:31:57,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:31:57,312 INFO L208 CegarLoopForPetriNet]: trace histogram [44, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:31:57,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-30 14:31:57,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:57,521 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:31:57,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:31:57,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1846616219, now seen corresponding path program 1 times [2023-08-30 14:31:57,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:31:57,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589725450] [2023-08-30 14:31:57,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:57,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:31:57,924 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:31:57,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [331251572] [2023-08-30 14:31:57,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:57,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:57,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:31:57,926 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:31:57,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 14:32:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:32:00,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 10472 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 14:32:00,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:32:00,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 531 proven. 253 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-08-30 14:32:00,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:32:01,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 531 proven. 253 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-08-30 14:32:01,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:32:01,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589725450] [2023-08-30 14:32:01,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:32:01,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331251572] [2023-08-30 14:32:01,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331251572] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:32:01,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 14:32:01,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2023-08-30 14:32:01,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443450436] [2023-08-30 14:32:01,198 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 14:32:01,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 14:32:01,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:32:01,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 14:32:01,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-08-30 14:32:01,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 425 [2023-08-30 14:32:01,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 71 transitions, 561 flow. Second operand has 32 states, 32 states have (on average 190.28125) internal successors, (6089), 32 states have internal predecessors, (6089), 0 states have call successors, (0), 0 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 14:32:01,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:32:01,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 425 [2023-08-30 14:32:01,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:32:03,037 INFO L130 PetriNetUnfolder]: 201/568 cut-off events. [2023-08-30 14:32:03,037 INFO L131 PetriNetUnfolder]: For 6922/6922 co-relation queries the response was YES. [2023-08-30 14:32:03,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1648 conditions, 568 events. 201/568 cut-off events. For 6922/6922 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1898 event pairs, 160 based on Foata normal form. 24/390 useless extension candidates. Maximal degree in co-relation 1601. Up to 411 conditions per place. [2023-08-30 14:32:03,041 INFO L137 encePairwiseOnDemand]: 421/425 looper letters, 61 selfloop transitions, 39 changer transitions 0/104 dead transitions. [2023-08-30 14:32:03,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 104 transitions, 1160 flow [2023-08-30 14:32:03,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 14:32:03,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 14:32:03,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6147 transitions. [2023-08-30 14:32:03,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45198529411764704 [2023-08-30 14:32:03,080 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 6147 transitions. [2023-08-30 14:32:03,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 6147 transitions. [2023-08-30 14:32:03,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:32:03,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 6147 transitions. [2023-08-30 14:32:03,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 192.09375) internal successors, (6147), 32 states have internal predecessors, (6147), 0 states have call successors, (0), 0 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 14:32:03,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 425.0) internal successors, (14025), 33 states have internal predecessors, (14025), 0 states have call successors, (0), 0 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 14:32:03,114 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 425.0) internal successors, (14025), 33 states have internal predecessors, (14025), 0 states have call successors, (0), 0 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 14:32:03,114 INFO L175 Difference]: Start difference. First operand has 107 places, 71 transitions, 561 flow. Second operand 32 states and 6147 transitions. [2023-08-30 14:32:03,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 104 transitions, 1160 flow [2023-08-30 14:32:03,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 104 transitions, 1142 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 14:32:03,125 INFO L231 Difference]: Finished difference. Result has 142 places, 80 transitions, 760 flow [2023-08-30 14:32:03,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=760, PETRI_PLACES=142, PETRI_TRANSITIONS=80} [2023-08-30 14:32:03,127 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 101 predicate places. [2023-08-30 14:32:03,127 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 80 transitions, 760 flow [2023-08-30 14:32:03,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 190.28125) internal successors, (6089), 32 states have internal predecessors, (6089), 0 states have call successors, (0), 0 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 14:32:03,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:32:03,129 INFO L208 CegarLoopForPetriNet]: trace histogram [60, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:32:03,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 14:32:03,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 14:32:03,343 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:32:03,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:32:03,344 INFO L85 PathProgramCache]: Analyzing trace with hash 547307931, now seen corresponding path program 2 times [2023-08-30 14:32:03,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:32:03,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517286185] [2023-08-30 14:32:03,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:32:03,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:32:03,852 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:32:03,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1103684019] [2023-08-30 14:32:03,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:32:03,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:32:03,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:32:03,861 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:32:03,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 14:32:05,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:32:05,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:32:05,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:32:05,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:32:05,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1894 trivial. 0 not checked. [2023-08-30 14:32:05,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:32:05,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:32:05,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517286185] [2023-08-30 14:32:05,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:32:05,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103684019] [2023-08-30 14:32:05,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103684019] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:32:05,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:32:05,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:32:05,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964175205] [2023-08-30 14:32:05,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:32:05,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:32:05,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:32:05,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:32:05,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:32:05,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 425 [2023-08-30 14:32:05,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 80 transitions, 760 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:05,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:32:05,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 425 [2023-08-30 14:32:05,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:32:06,288 INFO L130 PetriNetUnfolder]: 163/492 cut-off events. [2023-08-30 14:32:06,288 INFO L131 PetriNetUnfolder]: For 1758/1758 co-relation queries the response was YES. [2023-08-30 14:32:06,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1660 conditions, 492 events. 163/492 cut-off events. For 1758/1758 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1524 event pairs, 128 based on Foata normal form. 0/340 useless extension candidates. Maximal degree in co-relation 1604. Up to 330 conditions per place. [2023-08-30 14:32:06,292 INFO L137 encePairwiseOnDemand]: 423/425 looper letters, 74 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2023-08-30 14:32:06,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 79 transitions, 908 flow [2023-08-30 14:32:06,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:32:06,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:32:06,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 603 transitions. [2023-08-30 14:32:06,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47294117647058825 [2023-08-30 14:32:06,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 603 transitions. [2023-08-30 14:32:06,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 603 transitions. [2023-08-30 14:32:06,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:32:06,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 603 transitions. [2023-08-30 14:32:06,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 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 14:32:06,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 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 14:32:06,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 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 14:32:06,297 INFO L175 Difference]: Start difference. First operand has 142 places, 80 transitions, 760 flow. Second operand 3 states and 603 transitions. [2023-08-30 14:32:06,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 79 transitions, 908 flow [2023-08-30 14:32:06,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 79 transitions, 833 flow, removed 9 selfloop flow, removed 22 redundant places. [2023-08-30 14:32:06,313 INFO L231 Difference]: Finished difference. Result has 121 places, 79 transitions, 685 flow [2023-08-30 14:32:06,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=685, PETRI_PLACES=121, PETRI_TRANSITIONS=79} [2023-08-30 14:32:06,314 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 80 predicate places. [2023-08-30 14:32:06,314 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 79 transitions, 685 flow [2023-08-30 14:32:06,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:06,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:32:06,314 INFO L208 CegarLoopForPetriNet]: trace histogram [60, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:32:06,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 14:32:06,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-30 14:32:06,527 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:32:06,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:32:06,527 INFO L85 PathProgramCache]: Analyzing trace with hash 547307930, now seen corresponding path program 1 times [2023-08-30 14:32:06,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:32:06,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830218007] [2023-08-30 14:32:06,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:32:06,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:32:07,045 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:32:07,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089267105] [2023-08-30 14:32:07,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:32:07,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:32:07,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:32:07,048 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:32:07,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 14:32:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:32:11,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 14216 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:32:11,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:32:11,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2023-08-30 14:32:11,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:32:11,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2023-08-30 14:32:11,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:32:11,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830218007] [2023-08-30 14:32:11,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:32:11,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089267105] [2023-08-30 14:32:11,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089267105] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:32:11,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 14:32:11,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-08-30 14:32:11,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73131480] [2023-08-30 14:32:11,555 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 14:32:11,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 14:32:11,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:32:11,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 14:32:11,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-08-30 14:32:11,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 425 [2023-08-30 14:32:11,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 79 transitions, 685 flow. Second operand has 8 states, 8 states have (on average 191.375) internal successors, (1531), 8 states have internal predecessors, (1531), 0 states have call successors, (0), 0 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 14:32:11,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:32:11,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 425 [2023-08-30 14:32:11,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:32:12,466 INFO L130 PetriNetUnfolder]: 174/497 cut-off events. [2023-08-30 14:32:12,466 INFO L131 PetriNetUnfolder]: For 4595/4595 co-relation queries the response was YES. [2023-08-30 14:32:12,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2422 conditions, 497 events. 174/497 cut-off events. For 4595/4595 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 762 event pairs, 64 based on Foata normal form. 4/425 useless extension candidates. Maximal degree in co-relation 2366. Up to 181 conditions per place. [2023-08-30 14:32:12,471 INFO L137 encePairwiseOnDemand]: 420/425 looper letters, 219 selfloop transitions, 28 changer transitions 0/251 dead transitions. [2023-08-30 14:32:12,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 251 transitions, 2846 flow [2023-08-30 14:32:12,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 14:32:12,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 14:32:12,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1567 transitions. [2023-08-30 14:32:12,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46088235294117647 [2023-08-30 14:32:12,479 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1567 transitions. [2023-08-30 14:32:12,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1567 transitions. [2023-08-30 14:32:12,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:32:12,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1567 transitions. [2023-08-30 14:32:12,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 195.875) internal successors, (1567), 8 states have internal predecessors, (1567), 0 states have call successors, (0), 0 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 14:32:12,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 425.0) internal successors, (3825), 9 states have internal predecessors, (3825), 0 states have call successors, (0), 0 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 14:32:12,486 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 425.0) internal successors, (3825), 9 states have internal predecessors, (3825), 0 states have call successors, (0), 0 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 14:32:12,486 INFO L175 Difference]: Start difference. First operand has 121 places, 79 transitions, 685 flow. Second operand 8 states and 1567 transitions. [2023-08-30 14:32:12,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 251 transitions, 2846 flow [2023-08-30 14:32:12,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 251 transitions, 2845 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:32:12,510 INFO L231 Difference]: Finished difference. Result has 132 places, 98 transitions, 1214 flow [2023-08-30 14:32:12,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1214, PETRI_PLACES=132, PETRI_TRANSITIONS=98} [2023-08-30 14:32:12,511 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 91 predicate places. [2023-08-30 14:32:12,511 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 98 transitions, 1214 flow [2023-08-30 14:32:12,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 191.375) internal successors, (1531), 8 states have internal predecessors, (1531), 0 states have call successors, (0), 0 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 14:32:12,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:32:12,512 INFO L208 CegarLoopForPetriNet]: trace histogram [62, 3, 2, 1, 1] [2023-08-30 14:32:12,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-30 14:32:12,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-30 14:32:12,730 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:32:12,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:32:12,730 INFO L85 PathProgramCache]: Analyzing trace with hash 548777071, now seen corresponding path program 4 times [2023-08-30 14:32:12,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:32:12,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801339761] [2023-08-30 14:32:12,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:32:12,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:32:13,435 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:32:13,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [467733965] [2023-08-30 14:32:13,435 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 14:32:13,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:32:13,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:32:13,437 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:32:13,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 14:34:44,913 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 14:34:44,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:34:45,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 14680 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 14:34:45,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:34:45,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2083 backedges. 0 proven. 1150 refuted. 0 times theorem prover too weak. 933 trivial. 0 not checked. [2023-08-30 14:34:45,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:34:55,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2083 backedges. 0 proven. 1150 refuted. 0 times theorem prover too weak. 933 trivial. 0 not checked. [2023-08-30 14:34:55,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:34:55,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801339761] [2023-08-30 14:34:55,583 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:34:55,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467733965] [2023-08-30 14:34:55,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467733965] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:34:55,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 14:34:55,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-08-30 14:34:55,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558503293] [2023-08-30 14:34:55,583 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 14:34:55,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 14:34:55,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:34:55,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 14:34:55,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=33, Unknown=1, NotChecked=0, Total=56 [2023-08-30 14:34:57,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-30 14:35:00,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-30 14:35:02,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-30 14:35:04,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-30 14:35:06,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-30 14:35:08,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-30 14:35:10,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-30 14:35:10,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 425 [2023-08-30 14:35:10,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 98 transitions, 1214 flow. Second operand has 8 states, 8 states have (on average 185.5) internal successors, (1484), 8 states have internal predecessors, (1484), 0 states have call successors, (0), 0 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 14:35:10,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:10,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 425 [2023-08-30 14:35:10,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:13,284 INFO L130 PetriNetUnfolder]: 86/381 cut-off events. [2023-08-30 14:35:13,285 INFO L131 PetriNetUnfolder]: For 5639/5639 co-relation queries the response was YES. [2023-08-30 14:35:13,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1611 conditions, 381 events. 86/381 cut-off events. For 5639/5639 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 640 event pairs, 64 based on Foata normal form. 116/421 useless extension candidates. Maximal degree in co-relation 1549. Up to 181 conditions per place. [2023-08-30 14:35:13,287 INFO L137 encePairwiseOnDemand]: 421/425 looper letters, 155 selfloop transitions, 9 changer transitions 0/168 dead transitions. [2023-08-30 14:35:13,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 168 transitions, 1910 flow [2023-08-30 14:35:13,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:35:13,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:35:13,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1324 transitions. [2023-08-30 14:35:13,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4450420168067227 [2023-08-30 14:35:13,290 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1324 transitions. [2023-08-30 14:35:13,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1324 transitions. [2023-08-30 14:35:13,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:13,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1324 transitions. [2023-08-30 14:35:13,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 189.14285714285714) internal successors, (1324), 7 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:35:13,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 425.0) internal successors, (3400), 8 states have internal predecessors, (3400), 0 states have call successors, (0), 0 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 14:35:13,295 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 425.0) internal successors, (3400), 8 states have internal predecessors, (3400), 0 states have call successors, (0), 0 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 14:35:13,295 INFO L175 Difference]: Start difference. First operand has 132 places, 98 transitions, 1214 flow. Second operand 7 states and 1324 transitions. [2023-08-30 14:35:13,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 168 transitions, 1910 flow [2023-08-30 14:35:13,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 168 transitions, 1378 flow, removed 220 selfloop flow, removed 13 redundant places. [2023-08-30 14:35:13,312 INFO L231 Difference]: Finished difference. Result has 125 places, 79 transitions, 712 flow [2023-08-30 14:35:13,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=712, PETRI_PLACES=125, PETRI_TRANSITIONS=79} [2023-08-30 14:35:13,312 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 84 predicate places. [2023-08-30 14:35:13,313 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 79 transitions, 712 flow [2023-08-30 14:35:13,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 185.5) internal successors, (1484), 8 states have internal predecessors, (1484), 0 states have call successors, (0), 0 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 14:35:13,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:13,313 INFO L208 CegarLoopForPetriNet]: trace histogram [180, 6, 6, 1, 1, 1, 1, 1] [2023-08-30 14:35:13,529 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forcibly destroying the process [2023-08-30 14:35:13,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 137 [2023-08-30 14:35:13,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-30 14:35:13,597 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:35:13,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:13,597 INFO L85 PathProgramCache]: Analyzing trace with hash -200176094, now seen corresponding path program 2 times [2023-08-30 14:35:13,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:13,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661592823] [2023-08-30 14:35:13,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:13,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:15,182 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:35:15,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [538400561] [2023-08-30 14:35:15,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:35:15,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:35:15,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:35:15,185 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:35:15,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 14:35:20,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:35:20,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:35:21,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:35:21,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:35:21,049 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17226 trivial. 0 not checked. [2023-08-30 14:35:21,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:35:21,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:21,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661592823] [2023-08-30 14:35:21,050 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:35:21,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538400561] [2023-08-30 14:35:21,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538400561] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:35:21,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:35:21,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:35:21,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504412960] [2023-08-30 14:35:21,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:35:21,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:35:21,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:21,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:35:21,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:35:21,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 425 [2023-08-30 14:35:21,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 79 transitions, 712 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:35:21,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:21,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 425 [2023-08-30 14:35:21,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:21,595 INFO L130 PetriNetUnfolder]: 67/344 cut-off events. [2023-08-30 14:35:21,595 INFO L131 PetriNetUnfolder]: For 3261/3261 co-relation queries the response was YES. [2023-08-30 14:35:21,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1164 conditions, 344 events. 67/344 cut-off events. For 3261/3261 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 539 event pairs, 22 based on Foata normal form. 0/294 useless extension candidates. Maximal degree in co-relation 1111. Up to 309 conditions per place. [2023-08-30 14:35:21,599 INFO L137 encePairwiseOnDemand]: 421/425 looper letters, 91 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2023-08-30 14:35:21,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 97 transitions, 934 flow [2023-08-30 14:35:21,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:35:21,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:35:21,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 621 transitions. [2023-08-30 14:35:21,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48705882352941177 [2023-08-30 14:35:21,601 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 621 transitions. [2023-08-30 14:35:21,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 621 transitions. [2023-08-30 14:35:21,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:21,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 621 transitions. [2023-08-30 14:35:21,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 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 14:35:21,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 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 14:35:21,604 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 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 14:35:21,604 INFO L175 Difference]: Start difference. First operand has 125 places, 79 transitions, 712 flow. Second operand 3 states and 621 transitions. [2023-08-30 14:35:21,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 97 transitions, 934 flow [2023-08-30 14:35:21,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 97 transitions, 927 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 14:35:21,615 INFO L231 Difference]: Finished difference. Result has 123 places, 78 transitions, 711 flow [2023-08-30 14:35:21,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=711, PETRI_PLACES=123, PETRI_TRANSITIONS=78} [2023-08-30 14:35:21,616 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 82 predicate places. [2023-08-30 14:35:21,616 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 78 transitions, 711 flow [2023-08-30 14:35:21,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:35:21,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:21,616 INFO L208 CegarLoopForPetriNet]: trace histogram [180, 6, 6, 2, 1, 1, 1, 1, 1] [2023-08-30 14:35:21,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 14:35:21,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:35:21,846 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:35:21,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:21,847 INFO L85 PathProgramCache]: Analyzing trace with hash 904329682, now seen corresponding path program 1 times [2023-08-30 14:35:21,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:21,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490224209] [2023-08-30 14:35:21,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:21,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:23,452 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:35:23,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [471770960] [2023-08-30 14:35:23,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:23,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:35:23,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:35:23,454 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:35:23,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 14:35:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:36,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 42475 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 14:35:36,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:35:37,230 INFO L134 CoverageAnalysis]: Checked inductivity of 17228 backedges. 0 proven. 14436 refuted. 0 times theorem prover too weak. 2792 trivial. 0 not checked. [2023-08-30 14:35:37,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:35:37,528 INFO L134 CoverageAnalysis]: Checked inductivity of 17228 backedges. 0 proven. 14436 refuted. 0 times theorem prover too weak. 2792 trivial. 0 not checked. [2023-08-30 14:35:37,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:37,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490224209] [2023-08-30 14:35:37,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:35:37,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471770960] [2023-08-30 14:35:37,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471770960] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:35:37,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 14:35:37,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-08-30 14:35:37,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949333626] [2023-08-30 14:35:37,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 14:35:37,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 14:35:37,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:37,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 14:35:37,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 14:35:37,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 425 [2023-08-30 14:35:37,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 78 transitions, 711 flow. Second operand has 12 states, 12 states have (on average 191.83333333333334) internal successors, (2302), 12 states have internal predecessors, (2302), 0 states have call successors, (0), 0 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 14:35:37,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:37,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 425 [2023-08-30 14:35:37,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:38,608 INFO L130 PetriNetUnfolder]: 71/473 cut-off events. [2023-08-30 14:35:38,608 INFO L131 PetriNetUnfolder]: For 5540/5540 co-relation queries the response was YES. [2023-08-30 14:35:38,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1763 conditions, 473 events. 71/473 cut-off events. For 5540/5540 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 493 event pairs, 48 based on Foata normal form. 4/442 useless extension candidates. Maximal degree in co-relation 1710. Up to 131 conditions per place. [2023-08-30 14:35:38,611 INFO L137 encePairwiseOnDemand]: 421/425 looper letters, 346 selfloop transitions, 12 changer transitions 0/362 dead transitions. [2023-08-30 14:35:38,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 362 transitions, 2908 flow [2023-08-30 14:35:38,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:35:38,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:35:38,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2330 transitions. [2023-08-30 14:35:38,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4568627450980392 [2023-08-30 14:35:38,614 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2330 transitions. [2023-08-30 14:35:38,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2330 transitions. [2023-08-30 14:35:38,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:38,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2330 transitions. [2023-08-30 14:35:38,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 194.16666666666666) internal successors, (2330), 12 states have internal predecessors, (2330), 0 states have call successors, (0), 0 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 14:35:38,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 425.0) internal successors, (5525), 13 states have internal predecessors, (5525), 0 states have call successors, (0), 0 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 14:35:38,621 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 425.0) internal successors, (5525), 13 states have internal predecessors, (5525), 0 states have call successors, (0), 0 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 14:35:38,622 INFO L175 Difference]: Start difference. First operand has 123 places, 78 transitions, 711 flow. Second operand 12 states and 2330 transitions. [2023-08-30 14:35:38,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 362 transitions, 2908 flow [2023-08-30 14:35:38,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 362 transitions, 2904 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:35:38,637 INFO L231 Difference]: Finished difference. Result has 137 places, 83 transitions, 1043 flow [2023-08-30 14:35:38,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1043, PETRI_PLACES=137, PETRI_TRANSITIONS=83} [2023-08-30 14:35:38,637 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 96 predicate places. [2023-08-30 14:35:38,638 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 83 transitions, 1043 flow [2023-08-30 14:35:38,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 191.83333333333334) internal successors, (2302), 12 states have internal predecessors, (2302), 0 states have call successors, (0), 0 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 14:35:38,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:38,638 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 2, 1, 1, 1, 1, 1] [2023-08-30 14:35:38,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 14:35:38,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 14:35:38,857 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:35:38,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:38,857 INFO L85 PathProgramCache]: Analyzing trace with hash 348636250, now seen corresponding path program 2 times [2023-08-30 14:35:38,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:38,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573209040] [2023-08-30 14:35:38,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:38,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:41,293 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:35:41,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1742345946] [2023-08-30 14:35:41,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:35:41,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:35:41,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:35:41,295 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:35:41,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process Killed by 15