./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.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_90-arrayloop2_racing.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 f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af --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 14:28:48,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:28:48,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:28:48,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:28:48,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:28:48,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:28:48,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:28:48,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:28:48,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:28:48,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:28:48,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:28:48,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:28:48,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:28:48,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:28:48,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:28:48,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:28:48,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:28:48,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:28:48,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:28:48,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:28:48,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:28:48,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:28:48,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:28:48,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:28:48,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:28:48,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:28:48,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:28:48,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:28:48,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:28:48,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:28:48,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:28:48,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:28:48,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:28:48,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:28:48,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:28:48,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:28:48,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:28:48,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:28:48,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:28:48,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:28:48,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:28:48,123 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:28:48,144 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:28:48,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:28:48,145 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:28:48,145 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:28:48,146 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:28:48,146 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:28:48,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:28:48,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:28:48,147 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:28:48,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:28:48,148 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:28:48,148 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:28:48,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:28:48,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:28:48,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:28:48,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:28:48,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:28:48,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:28:48,149 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:28:48,149 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:28:48,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:28:48,149 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:28:48,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:28:48,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:28:48,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:28:48,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:28:48,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:28:48,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:28:48,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:28:48,151 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:28:48,151 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:28:48,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:28:48,151 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:28:48,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:28:48,151 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:28:48,151 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:28:48,152 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:28:48,152 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:28:48,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:28:48,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:28:48,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:28:48,438 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:28:48,438 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:28:48,439 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-08-30 14:28:49,496 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:28:49,749 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:28:49,749 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-08-30 14:28:49,762 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17d80701b/2d158e7d73b24dc9a1e593c1f6be36a1/FLAGf8be97ccd [2023-08-30 14:28:49,776 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17d80701b/2d158e7d73b24dc9a1e593c1f6be36a1 [2023-08-30 14:28:49,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:28:49,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:28:49,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:28:49,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:28:49,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:28:49,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:28:49" (1/1) ... [2023-08-30 14:28:49,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@147dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:49, skipping insertion in model container [2023-08-30 14:28:49,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:28:49" (1/1) ... [2023-08-30 14:28:49,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:28:49,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:28:50,123 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_90-arrayloop2_racing.i[47038,47051] [2023-08-30 14:28:50,134 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 14:28:50,134 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 14:28:50,134 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 14:28:50,135 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 14:28:50,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:28:50,189 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:28:50,227 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_90-arrayloop2_racing.i[47038,47051] [2023-08-30 14:28:50,231 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 14:28:50,233 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 14:28:50,234 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 14:28:50,234 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 14:28:50,246 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:28:50,299 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:28:50,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:50 WrapperNode [2023-08-30 14:28:50,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:28:50,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:28:50,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:28:50,301 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:28:50,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:50" (1/1) ... [2023-08-30 14:28:50,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:50" (1/1) ... [2023-08-30 14:28:50,348 INFO L138 Inliner]: procedures = 278, calls = 64, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 332 [2023-08-30 14:28:50,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:28:50,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:28:50,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:28:50,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:28:50,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:50" (1/1) ... [2023-08-30 14:28:50,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:50" (1/1) ... [2023-08-30 14:28:50,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:50" (1/1) ... [2023-08-30 14:28:50,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:50" (1/1) ... [2023-08-30 14:28:50,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:50" (1/1) ... [2023-08-30 14:28:50,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:50" (1/1) ... [2023-08-30 14:28:50,379 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:50" (1/1) ... [2023-08-30 14:28:50,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:50" (1/1) ... [2023-08-30 14:28:50,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:28:50,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:28:50,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:28:50,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:28:50,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:50" (1/1) ... [2023-08-30 14:28:50,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:28:50,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:28:50,424 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 14:28:50,473 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 14:28:50,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:28:50,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 14:28:50,495 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-30 14:28:50,495 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-30 14:28:50,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:28:50,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:28:50,496 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-30 14:28:50,496 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-30 14:28:50,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:28:50,496 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:28:50,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 14:28:50,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:28:50,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 14:28:50,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:28:50,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:28:50,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:28:50,498 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 14:28:50,654 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:28:50,656 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:28:51,011 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:28:51,019 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:28:51,019 INFO L302 CfgBuilder]: Removed 30 assume(true) statements. [2023-08-30 14:28:51,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:28:51 BoogieIcfgContainer [2023-08-30 14:28:51,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:28:51,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:28:51,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:28:51,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:28:51,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:28:49" (1/3) ... [2023-08-30 14:28:51,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40eda647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:28:51, skipping insertion in model container [2023-08-30 14:28:51,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:50" (2/3) ... [2023-08-30 14:28:51,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40eda647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:28:51, skipping insertion in model container [2023-08-30 14:28:51,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:28:51" (3/3) ... [2023-08-30 14:28:51,027 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2023-08-30 14:28:51,039 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:28:51,045 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:28:51,045 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-08-30 14:28:51,046 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:28:51,150 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 14:28:51,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 356 transitions, 734 flow [2023-08-30 14:28:51,296 INFO L130 PetriNetUnfolder]: 77/582 cut-off events. [2023-08-30 14:28:51,297 INFO L131 PetriNetUnfolder]: For 8/13 co-relation queries the response was YES. [2023-08-30 14:28:51,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 582 events. 77/582 cut-off events. For 8/13 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2882 event pairs, 0 based on Foata normal form. 0/453 useless extension candidates. Maximal degree in co-relation 297. Up to 8 conditions per place. [2023-08-30 14:28:51,309 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 356 transitions, 734 flow [2023-08-30 14:28:51,321 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 315 places, 356 transitions, 734 flow [2023-08-30 14:28:51,325 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:28:51,335 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 315 places, 356 transitions, 734 flow [2023-08-30 14:28:51,341 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 315 places, 356 transitions, 734 flow [2023-08-30 14:28:51,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 356 transitions, 734 flow [2023-08-30 14:28:51,474 INFO L130 PetriNetUnfolder]: 77/582 cut-off events. [2023-08-30 14:28:51,474 INFO L131 PetriNetUnfolder]: For 8/13 co-relation queries the response was YES. [2023-08-30 14:28:51,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 582 events. 77/582 cut-off events. For 8/13 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2882 event pairs, 0 based on Foata normal form. 0/453 useless extension candidates. Maximal degree in co-relation 297. Up to 8 conditions per place. [2023-08-30 14:28:51,495 INFO L119 LiptonReduction]: Number of co-enabled transitions 44116 [2023-08-30 14:29:47,810 WARN L222 SmtUtils]: Spent 10.27s 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 14:29:53,592 WARN L222 SmtUtils]: Spent 5.78s 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 14:30:04,212 WARN L222 SmtUtils]: Spent 10.62s 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 14:30:09,502 WARN L222 SmtUtils]: Spent 5.29s 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 14:30:22,131 WARN L222 SmtUtils]: Spent 12.33s on a formula simplification. DAG size of input: 182 DAG size of output: 180 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 14:30:29,350 WARN L222 SmtUtils]: Spent 7.22s 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 14:30:43,064 WARN L222 SmtUtils]: Spent 13.71s on a formula simplification. DAG size of input: 182 DAG size of output: 180 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 14:30:50,018 WARN L222 SmtUtils]: Spent 6.95s 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 14:30:50,021 INFO L134 LiptonReduction]: Checked pairs total: 74021 [2023-08-30 14:30:50,021 INFO L136 LiptonReduction]: Total number of compositions: 332 [2023-08-30 14:30:50,032 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:30:50,036 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;@322c4e92, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:30:50,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2023-08-30 14:30:50,039 INFO L130 PetriNetUnfolder]: 2/7 cut-off events. [2023-08-30 14:30:50,039 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:30:50,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:30:50,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:30:50,040 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:30:50,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:30:50,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1451769, now seen corresponding path program 1 times [2023-08-30 14:30:50,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:30:50,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309519246] [2023-08-30 14:30:50,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:30:50,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:30:50,127 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:30:50,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [199787828] [2023-08-30 14:30:50,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:30:50,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:30:50,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:30:50,131 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 14:30:50,132 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 14:30:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:30:50,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:30:50,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:30:50,278 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 14:30:50,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:30:50,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:30:50,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309519246] [2023-08-30 14:30:50,279 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:30:50,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199787828] [2023-08-30 14:30:50,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199787828] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:30:50,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:30:50,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:30:50,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999087013] [2023-08-30 14:30:50,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:30:50,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:30:50,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:30:50,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:30:50,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:30:50,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 688 [2023-08-30 14:30:50,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 119 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 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 14:30:50,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:30:50,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 688 [2023-08-30 14:30:50,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:30:51,960 INFO L130 PetriNetUnfolder]: 11416/18098 cut-off events. [2023-08-30 14:30:51,960 INFO L131 PetriNetUnfolder]: For 272/272 co-relation queries the response was YES. [2023-08-30 14:30:51,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35045 conditions, 18098 events. 11416/18098 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 119730 event pairs, 9876 based on Foata normal form. 1698/12832 useless extension candidates. Maximal degree in co-relation 33345. Up to 16788 conditions per place. [2023-08-30 14:30:52,112 INFO L137 encePairwiseOnDemand]: 657/688 looper letters, 84 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2023-08-30 14:30:52,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 100 transitions, 396 flow [2023-08-30 14:30:52,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:30:52,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:30:52,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1040 transitions. [2023-08-30 14:30:52,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5038759689922481 [2023-08-30 14:30:52,133 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1040 transitions. [2023-08-30 14:30:52,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1040 transitions. [2023-08-30 14:30:52,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:30:52,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1040 transitions. [2023-08-30 14:30:52,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 0 states have call successors, (0), 0 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 14:30:52,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 688.0) internal successors, (2752), 4 states have internal predecessors, (2752), 0 states have call successors, (0), 0 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 14:30:52,153 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 688.0) internal successors, (2752), 4 states have internal predecessors, (2752), 0 states have call successors, (0), 0 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 14:30:52,154 INFO L175 Difference]: Start difference. First operand has 92 places, 119 transitions, 260 flow. Second operand 3 states and 1040 transitions. [2023-08-30 14:30:52,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 100 transitions, 396 flow [2023-08-30 14:30:52,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 100 transitions, 396 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:30:52,161 INFO L231 Difference]: Finished difference. Result has 93 places, 98 transitions, 244 flow [2023-08-30 14:30:52,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=688, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=93, PETRI_TRANSITIONS=98} [2023-08-30 14:30:52,168 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 1 predicate places. [2023-08-30 14:30:52,168 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 98 transitions, 244 flow [2023-08-30 14:30:52,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 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 14:30:52,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:30:52,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:30:52,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 14:30:52,376 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 14:30:52,376 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:30:52,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:30:52,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1451952, now seen corresponding path program 1 times [2023-08-30 14:30:52,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:30:52,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362029542] [2023-08-30 14:30:52,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:30:52,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:30:52,406 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:30:52,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1184834414] [2023-08-30 14:30:52,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:30:52,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:30:52,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:30:52,408 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 14:30:52,433 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 14:30:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:30:52,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:30:52,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:30:52,531 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 14:30:52,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:30:52,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:30:52,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362029542] [2023-08-30 14:30:52,532 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:30:52,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184834414] [2023-08-30 14:30:52,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184834414] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:30:52,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:30:52,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:30:52,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328958038] [2023-08-30 14:30:52,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:30:52,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:30:52,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:30:52,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:30:52,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:30:52,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 688 [2023-08-30 14:30:52,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 98 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 311.0) internal successors, (933), 3 states have internal predecessors, (933), 0 states have call successors, (0), 0 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 14:30:52,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:30:52,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 688 [2023-08-30 14:30:52,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:30:53,685 INFO L130 PetriNetUnfolder]: 11415/18096 cut-off events. [2023-08-30 14:30:53,686 INFO L131 PetriNetUnfolder]: For 274/274 co-relation queries the response was YES. [2023-08-30 14:30:53,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35053 conditions, 18096 events. 11415/18096 cut-off events. For 274/274 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 119708 event pairs, 9876 based on Foata normal form. 2/11139 useless extension candidates. Maximal degree in co-relation 35035. Up to 16789 conditions per place. [2023-08-30 14:30:53,764 INFO L137 encePairwiseOnDemand]: 686/688 looper letters, 83 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2023-08-30 14:30:53,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 97 transitions, 404 flow [2023-08-30 14:30:53,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:30:53,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:30:53,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1014 transitions. [2023-08-30 14:30:53,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49127906976744184 [2023-08-30 14:30:53,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1014 transitions. [2023-08-30 14:30:53,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1014 transitions. [2023-08-30 14:30:53,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:30:53,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1014 transitions. [2023-08-30 14:30:53,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 0 states have call successors, (0), 0 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 14:30:53,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 688.0) internal successors, (2752), 4 states have internal predecessors, (2752), 0 states have call successors, (0), 0 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 14:30:53,774 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 688.0) internal successors, (2752), 4 states have internal predecessors, (2752), 0 states have call successors, (0), 0 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 14:30:53,774 INFO L175 Difference]: Start difference. First operand has 93 places, 98 transitions, 244 flow. Second operand 3 states and 1014 transitions. [2023-08-30 14:30:53,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 97 transitions, 404 flow [2023-08-30 14:30:53,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 97 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:30:53,777 INFO L231 Difference]: Finished difference. Result has 93 places, 97 transitions, 237 flow [2023-08-30 14:30:53,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=688, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=93, PETRI_TRANSITIONS=97} [2023-08-30 14:30:53,778 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 1 predicate places. [2023-08-30 14:30:53,778 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 97 transitions, 237 flow [2023-08-30 14:30:53,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.0) internal successors, (933), 3 states have internal predecessors, (933), 0 states have call successors, (0), 0 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 14:30:53,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:30:53,779 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-08-30 14:30:53,797 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 14:30:53,985 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 14:30:53,985 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:30:53,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:30:53,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1395318943, now seen corresponding path program 1 times [2023-08-30 14:30:53,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:30:53,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448258872] [2023-08-30 14:30:53,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:30:53,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:30:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:30:54,103 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 14:30:54,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:30:54,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448258872] [2023-08-30 14:30:54,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448258872] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:30:54,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:30:54,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:30:54,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327466477] [2023-08-30 14:30:54,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:30:54,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:30:54,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:30:54,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:30:54,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:30:54,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 688 [2023-08-30 14:30:54,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 97 transitions, 237 flow. Second operand has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 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 14:30:54,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:30:54,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 688 [2023-08-30 14:30:54,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:30:55,177 INFO L130 PetriNetUnfolder]: 11415/18098 cut-off events. [2023-08-30 14:30:55,177 INFO L131 PetriNetUnfolder]: For 272/272 co-relation queries the response was YES. [2023-08-30 14:30:55,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35058 conditions, 18098 events. 11415/18098 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 119838 event pairs, 9876 based on Foata normal form. 2/11141 useless extension candidates. Maximal degree in co-relation 35045. Up to 16791 conditions per place. [2023-08-30 14:30:55,238 INFO L137 encePairwiseOnDemand]: 681/688 looper letters, 82 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2023-08-30 14:30:55,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 98 transitions, 409 flow [2023-08-30 14:30:55,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:30:55,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:30:55,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1012 transitions. [2023-08-30 14:30:55,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4903100775193798 [2023-08-30 14:30:55,241 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1012 transitions. [2023-08-30 14:30:55,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1012 transitions. [2023-08-30 14:30:55,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:30:55,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1012 transitions. [2023-08-30 14:30:55,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 337.3333333333333) internal successors, (1012), 3 states have internal predecessors, (1012), 0 states have call successors, (0), 0 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 14:30:55,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 688.0) internal successors, (2752), 4 states have internal predecessors, (2752), 0 states have call successors, (0), 0 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 14:30:55,247 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 688.0) internal successors, (2752), 4 states have internal predecessors, (2752), 0 states have call successors, (0), 0 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 14:30:55,247 INFO L175 Difference]: Start difference. First operand has 93 places, 97 transitions, 237 flow. Second operand 3 states and 1012 transitions. [2023-08-30 14:30:55,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 98 transitions, 409 flow [2023-08-30 14:30:55,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 98 transitions, 409 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:30:55,250 INFO L231 Difference]: Finished difference. Result has 96 places, 98 transitions, 262 flow [2023-08-30 14:30:55,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=688, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=96, PETRI_TRANSITIONS=98} [2023-08-30 14:30:55,251 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 4 predicate places. [2023-08-30 14:30:55,251 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 98 transitions, 262 flow [2023-08-30 14:30:55,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 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 14:30:55,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:30:55,252 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-08-30 14:30:55,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:30:55,252 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:30:55,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:30:55,252 INFO L85 PathProgramCache]: Analyzing trace with hash 923557339, now seen corresponding path program 1 times [2023-08-30 14:30:55,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:30:55,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384136768] [2023-08-30 14:30:55,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:30:55,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:30:55,276 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:30:55,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1039138679] [2023-08-30 14:30:55,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:30:55,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:30:55,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:30:55,277 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 14:30:55,280 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 14:30:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:30:55,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:30:55,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:30:55,561 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:30:55,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:30:55,574 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:30:55,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:30:55,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384136768] [2023-08-30 14:30:55,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:30:55,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039138679] [2023-08-30 14:30:55,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039138679] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:30:55,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 14:30:55,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-30 14:30:55,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311526454] [2023-08-30 14:30:55,576 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 14:30:55,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:30:55,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:30:55,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:30:55,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:30:55,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 688 [2023-08-30 14:30:55,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 98 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 310.6666666666667) internal successors, (1864), 6 states have internal predecessors, (1864), 0 states have call successors, (0), 0 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 14:30:55,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:30:55,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 688 [2023-08-30 14:30:55,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:30:56,863 INFO L130 PetriNetUnfolder]: 11417/18110 cut-off events. [2023-08-30 14:30:56,864 INFO L131 PetriNetUnfolder]: For 276/276 co-relation queries the response was YES. [2023-08-30 14:30:56,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35116 conditions, 18110 events. 11417/18110 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 119794 event pairs, 9876 based on Foata normal form. 3/11151 useless extension candidates. Maximal degree in co-relation 35100. Up to 16789 conditions per place. [2023-08-30 14:30:56,965 INFO L137 encePairwiseOnDemand]: 681/688 looper letters, 86 selfloop transitions, 8 changer transitions 0/107 dead transitions. [2023-08-30 14:30:56,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 107 transitions, 498 flow [2023-08-30 14:30:56,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:30:56,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:30:56,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1955 transitions. [2023-08-30 14:30:56,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4735949612403101 [2023-08-30 14:30:56,971 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1955 transitions. [2023-08-30 14:30:56,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1955 transitions. [2023-08-30 14:30:56,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:30:56,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1955 transitions. [2023-08-30 14:30:56,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 325.8333333333333) internal successors, (1955), 6 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:30:56,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 688.0) internal successors, (4816), 7 states have internal predecessors, (4816), 0 states have call successors, (0), 0 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 14:30:56,983 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 688.0) internal successors, (4816), 7 states have internal predecessors, (4816), 0 states have call successors, (0), 0 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 14:30:56,983 INFO L175 Difference]: Start difference. First operand has 96 places, 98 transitions, 262 flow. Second operand 6 states and 1955 transitions. [2023-08-30 14:30:56,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 107 transitions, 498 flow [2023-08-30 14:30:56,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 107 transitions, 493 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:30:56,990 INFO L231 Difference]: Finished difference. Result has 104 places, 103 transitions, 340 flow [2023-08-30 14:30:56,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=688, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=340, PETRI_PLACES=104, PETRI_TRANSITIONS=103} [2023-08-30 14:30:56,991 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 12 predicate places. [2023-08-30 14:30:56,992 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 103 transitions, 340 flow [2023-08-30 14:30:56,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 310.6666666666667) internal successors, (1864), 6 states have internal predecessors, (1864), 0 states have call successors, (0), 0 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 14:30:56,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:30:56,993 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-08-30 14:30:57,003 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 14:30:57,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:30:57,199 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:30:57,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:30:57,200 INFO L85 PathProgramCache]: Analyzing trace with hash -40460860, now seen corresponding path program 1 times [2023-08-30 14:30:57,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:30:57,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757727669] [2023-08-30 14:30:57,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:30:57,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:30:57,257 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:30:57,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1870605141] [2023-08-30 14:30:57,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:30:57,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:30:57,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:30:57,259 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 14:30:57,262 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 14:30:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:30:57,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:30:57,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:30:57,592 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:30:57,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:30:57,632 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:30:57,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:30:57,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757727669] [2023-08-30 14:30:57,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:30:57,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870605141] [2023-08-30 14:30:57,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870605141] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:30:57,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 14:30:57,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-30 14:30:57,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553334128] [2023-08-30 14:30:57,634 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 14:30:57,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 14:30:57,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:30:57,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 14:30:57,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 14:30:57,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 688 [2023-08-30 14:30:57,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 103 transitions, 340 flow. Second operand has 12 states, 12 states have (on average 310.3333333333333) internal successors, (3724), 12 states have internal predecessors, (3724), 0 states have call successors, (0), 0 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 14:30:57,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:30:57,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 688 [2023-08-30 14:30:57,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:30:59,749 INFO L130 PetriNetUnfolder]: 11417/18134 cut-off events. [2023-08-30 14:30:59,749 INFO L131 PetriNetUnfolder]: For 367/367 co-relation queries the response was YES. [2023-08-30 14:30:59,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35277 conditions, 18134 events. 11417/18134 cut-off events. For 367/367 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 119957 event pairs, 9876 based on Foata normal form. 12/11179 useless extension candidates. Maximal degree in co-relation 35256. Up to 16789 conditions per place. [2023-08-30 14:30:59,830 INFO L137 encePairwiseOnDemand]: 681/688 looper letters, 98 selfloop transitions, 14 changer transitions 0/125 dead transitions. [2023-08-30 14:30:59,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 125 transitions, 752 flow [2023-08-30 14:30:59,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:30:59,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:30:59,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3836 transitions. [2023-08-30 14:30:59,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4646317829457364 [2023-08-30 14:30:59,838 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3836 transitions. [2023-08-30 14:30:59,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3836 transitions. [2023-08-30 14:30:59,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:30:59,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3836 transitions. [2023-08-30 14:30:59,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 319.6666666666667) internal successors, (3836), 12 states have internal predecessors, (3836), 0 states have call successors, (0), 0 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 14:30:59,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 688.0) internal successors, (8944), 13 states have internal predecessors, (8944), 0 states have call successors, (0), 0 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 14:30:59,854 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 688.0) internal successors, (8944), 13 states have internal predecessors, (8944), 0 states have call successors, (0), 0 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 14:30:59,854 INFO L175 Difference]: Start difference. First operand has 104 places, 103 transitions, 340 flow. Second operand 12 states and 3836 transitions. [2023-08-30 14:30:59,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 125 transitions, 752 flow [2023-08-30 14:30:59,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 125 transitions, 749 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:30:59,858 INFO L231 Difference]: Finished difference. Result has 121 places, 111 transitions, 494 flow [2023-08-30 14:30:59,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=688, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=494, PETRI_PLACES=121, PETRI_TRANSITIONS=111} [2023-08-30 14:30:59,858 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 29 predicate places. [2023-08-30 14:30:59,858 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 111 transitions, 494 flow [2023-08-30 14:30:59,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 310.3333333333333) internal successors, (3724), 12 states have internal predecessors, (3724), 0 states have call successors, (0), 0 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 14:30:59,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:30:59,860 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 2, 1, 1, 1] [2023-08-30 14:30:59,867 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 14:31:00,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:00,067 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:31:00,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:31:00,068 INFO L85 PathProgramCache]: Analyzing trace with hash 935614020, now seen corresponding path program 2 times [2023-08-30 14:31:00,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:31:00,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961381865] [2023-08-30 14:31:00,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:00,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:31:00,169 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:31:00,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1866727569] [2023-08-30 14:31:00,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:31:00,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:00,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:31:00,171 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 14:31:00,173 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 14:31:00,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 14:31:00,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:31:00,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 14:31:00,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:31:00,854 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:31:00,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:31:01,013 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:31:01,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:31:01,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961381865] [2023-08-30 14:31:01,014 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:31:01,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866727569] [2023-08-30 14:31:01,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866727569] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:31:01,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 14:31:01,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-30 14:31:01,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327879123] [2023-08-30 14:31:01,015 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 14:31:01,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 14:31:01,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:31:01,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 14:31:01,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-30 14:31:01,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 688 [2023-08-30 14:31:01,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 111 transitions, 494 flow. Second operand has 24 states, 24 states have (on average 310.1666666666667) internal successors, (7444), 24 states have internal predecessors, (7444), 0 states have call successors, (0), 0 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 14:31:01,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:31:01,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 688 [2023-08-30 14:31:01,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:31:04,394 INFO L130 PetriNetUnfolder]: 11417/18182 cut-off events. [2023-08-30 14:31:04,394 INFO L131 PetriNetUnfolder]: For 1495/1495 co-relation queries the response was YES. [2023-08-30 14:31:04,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35672 conditions, 18182 events. 11417/18182 cut-off events. For 1495/1495 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 120633 event pairs, 9876 based on Foata normal form. 24/11227 useless extension candidates. Maximal degree in co-relation 35643. Up to 16789 conditions per place. [2023-08-30 14:31:04,514 INFO L137 encePairwiseOnDemand]: 681/688 looper letters, 122 selfloop transitions, 26 changer transitions 0/161 dead transitions. [2023-08-30 14:31:04,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 161 transitions, 1374 flow [2023-08-30 14:31:04,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 14:31:04,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 14:31:04,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 7598 transitions. [2023-08-30 14:31:04,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4601501937984496 [2023-08-30 14:31:04,526 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 7598 transitions. [2023-08-30 14:31:04,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 7598 transitions. [2023-08-30 14:31:04,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:31:04,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 7598 transitions. [2023-08-30 14:31:04,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 316.5833333333333) internal successors, (7598), 24 states have internal predecessors, (7598), 0 states have call successors, (0), 0 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 14:31:04,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 688.0) internal successors, (17200), 25 states have internal predecessors, (17200), 0 states have call successors, (0), 0 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 14:31:04,556 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 688.0) internal successors, (17200), 25 states have internal predecessors, (17200), 0 states have call successors, (0), 0 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 14:31:04,556 INFO L175 Difference]: Start difference. First operand has 121 places, 111 transitions, 494 flow. Second operand 24 states and 7598 transitions. [2023-08-30 14:31:04,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 161 transitions, 1374 flow [2023-08-30 14:31:04,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 161 transitions, 1301 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-08-30 14:31:04,561 INFO L231 Difference]: Finished difference. Result has 153 places, 125 transitions, 762 flow [2023-08-30 14:31:04,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=688, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=762, PETRI_PLACES=153, PETRI_TRANSITIONS=125} [2023-08-30 14:31:04,562 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 61 predicate places. [2023-08-30 14:31:04,562 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 125 transitions, 762 flow [2023-08-30 14:31:04,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 310.1666666666667) internal successors, (7444), 24 states have internal predecessors, (7444), 0 states have call successors, (0), 0 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 14:31:04,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:31:04,564 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 2, 1, 1, 1] [2023-08-30 14:31:04,574 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 14:31:04,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:04,774 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:31:04,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:31:04,774 INFO L85 PathProgramCache]: Analyzing trace with hash 381855556, now seen corresponding path program 3 times [2023-08-30 14:31:04,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:31:04,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425409882] [2023-08-30 14:31:04,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:04,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:31:04,950 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:31:04,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334841520] [2023-08-30 14:31:04,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 14:31:04,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:04,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:31:04,974 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 14:31:04,975 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 14:31:05,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 14:31:05,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:31:05,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 14:31:05,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:31:05,665 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-08-30 14:31:05,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:31:05,805 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-08-30 14:31:05,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:31:05,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425409882] [2023-08-30 14:31:05,805 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:31:05,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334841520] [2023-08-30 14:31:05,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334841520] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:31:05,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 14:31:05,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-30 14:31:05,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118363794] [2023-08-30 14:31:05,806 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 14:31:05,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:31:05,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:31:05,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:31:05,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:31:05,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 688 [2023-08-30 14:31:05,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 125 transitions, 762 flow. Second operand has 6 states, 6 states have (on average 304.6666666666667) internal successors, (1828), 6 states have internal predecessors, (1828), 0 states have call successors, (0), 0 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 14:31:05,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:31:05,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 688 [2023-08-30 14:31:05,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:31:07,821 INFO L130 PetriNetUnfolder]: 11417/18179 cut-off events. [2023-08-30 14:31:07,822 INFO L131 PetriNetUnfolder]: For 854/854 co-relation queries the response was YES. [2023-08-30 14:31:07,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35748 conditions, 18179 events. 11417/18179 cut-off events. For 854/854 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 120644 event pairs, 9876 based on Foata normal form. 0/11203 useless extension candidates. Maximal degree in co-relation 35705. Up to 16807 conditions per place. [2023-08-30 14:31:07,917 INFO L137 encePairwiseOnDemand]: 680/688 looper letters, 98 selfloop transitions, 15 changer transitions 0/126 dead transitions. [2023-08-30 14:31:07,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 126 transitions, 996 flow [2023-08-30 14:31:07,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:31:07,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:31:07,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1910 transitions. [2023-08-30 14:31:07,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4626937984496124 [2023-08-30 14:31:07,920 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1910 transitions. [2023-08-30 14:31:07,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1910 transitions. [2023-08-30 14:31:07,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:31:07,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1910 transitions. [2023-08-30 14:31:07,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 318.3333333333333) internal successors, (1910), 6 states have internal predecessors, (1910), 0 states have call successors, (0), 0 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 14:31:07,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 688.0) internal successors, (4816), 7 states have internal predecessors, (4816), 0 states have call successors, (0), 0 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 14:31:07,927 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 688.0) internal successors, (4816), 7 states have internal predecessors, (4816), 0 states have call successors, (0), 0 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 14:31:07,927 INFO L175 Difference]: Start difference. First operand has 153 places, 125 transitions, 762 flow. Second operand 6 states and 1910 transitions. [2023-08-30 14:31:07,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 126 transitions, 996 flow [2023-08-30 14:31:07,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 126 transitions, 969 flow, removed 1 selfloop flow, removed 10 redundant places. [2023-08-30 14:31:07,935 INFO L231 Difference]: Finished difference. Result has 149 places, 125 transitions, 770 flow [2023-08-30 14:31:07,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=688, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=770, PETRI_PLACES=149, PETRI_TRANSITIONS=125} [2023-08-30 14:31:07,935 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 57 predicate places. [2023-08-30 14:31:07,935 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 125 transitions, 770 flow [2023-08-30 14:31:07,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 304.6666666666667) internal successors, (1828), 6 states have internal predecessors, (1828), 0 states have call successors, (0), 0 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 14:31:07,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:31:07,936 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 2, 1, 1, 1] [2023-08-30 14:31:07,943 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 14:31:08,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:08,143 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:31:08,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:31:08,144 INFO L85 PathProgramCache]: Analyzing trace with hash 381855499, now seen corresponding path program 1 times [2023-08-30 14:31:08,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:31:08,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091592508] [2023-08-30 14:31:08,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:08,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:31:08,299 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:31:08,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1243067830] [2023-08-30 14:31:08,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:08,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:08,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:31:08,301 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 14:31:08,302 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 14:31:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:31:09,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 5514 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 14:31:09,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:31:10,037 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:31:10,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:31:10,392 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:31:10,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:31:10,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091592508] [2023-08-30 14:31:10,392 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:31:10,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243067830] [2023-08-30 14:31:10,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243067830] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:31:10,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 14:31:10,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2023-08-30 14:31:10,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996368996] [2023-08-30 14:31:10,393 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 14:31:10,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 14:31:10,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:31:10,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 14:31:10,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-08-30 14:31:10,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 688 [2023-08-30 14:31:10,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 125 transitions, 770 flow. Second operand has 32 states, 32 states have (on average 310.15625) internal successors, (9925), 32 states have internal predecessors, (9925), 0 states have call successors, (0), 0 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 14:31:10,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:31:10,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 688 [2023-08-30 14:31:10,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:31:14,188 INFO L130 PetriNetUnfolder]: 11417/18211 cut-off events. [2023-08-30 14:31:14,188 INFO L131 PetriNetUnfolder]: For 5451/5451 co-relation queries the response was YES. [2023-08-30 14:31:14,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35942 conditions, 18211 events. 11417/18211 cut-off events. For 5451/5451 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 121086 event pairs, 9876 based on Foata normal form. 16/11270 useless extension candidates. Maximal degree in co-relation 35896. Up to 16789 conditions per place. [2023-08-30 14:31:14,449 INFO L137 encePairwiseOnDemand]: 681/688 looper letters, 135 selfloop transitions, 34 changer transitions 0/182 dead transitions. [2023-08-30 14:31:14,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 182 transitions, 1888 flow [2023-08-30 14:31:14,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 14:31:14,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 14:31:14,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 10079 transitions. [2023-08-30 14:31:14,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4578034156976744 [2023-08-30 14:31:14,465 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 10079 transitions. [2023-08-30 14:31:14,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 10079 transitions. [2023-08-30 14:31:14,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:31:14,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 10079 transitions. [2023-08-30 14:31:14,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 314.96875) internal successors, (10079), 32 states have internal predecessors, (10079), 0 states have call successors, (0), 0 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 14:31:14,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 688.0) internal successors, (22704), 33 states have internal predecessors, (22704), 0 states have call successors, (0), 0 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 14:31:14,529 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 688.0) internal successors, (22704), 33 states have internal predecessors, (22704), 0 states have call successors, (0), 0 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 14:31:14,529 INFO L175 Difference]: Start difference. First operand has 149 places, 125 transitions, 770 flow. Second operand 32 states and 10079 transitions. [2023-08-30 14:31:14,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 182 transitions, 1888 flow [2023-08-30 14:31:14,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 182 transitions, 1816 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-08-30 14:31:14,542 INFO L231 Difference]: Finished difference. Result has 183 places, 135 transitions, 964 flow [2023-08-30 14:31:14,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=688, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=964, PETRI_PLACES=183, PETRI_TRANSITIONS=135} [2023-08-30 14:31:14,544 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 91 predicate places. [2023-08-30 14:31:14,544 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 135 transitions, 964 flow [2023-08-30 14:31:14,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 310.15625) internal successors, (9925), 32 states have internal predecessors, (9925), 0 states have call successors, (0), 0 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 14:31:14,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:31:14,546 INFO L208 CegarLoopForPetriNet]: trace histogram [31, 2, 1, 1, 1] [2023-08-30 14:31:14,579 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 14:31:14,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:14,761 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:31:14,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:31:14,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1912298763, now seen corresponding path program 2 times [2023-08-30 14:31:14,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:31:14,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814923706] [2023-08-30 14:31:14,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:14,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:31:14,968 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:31:14,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1894372817] [2023-08-30 14:31:14,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:31:14,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:14,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:31:14,969 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 14:31:14,974 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 14:31:25,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 14:31:25,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:31:26,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 7386 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:31:26,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:31:26,105 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-08-30 14:31:26,105 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:31:26,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:31:26,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814923706] [2023-08-30 14:31:26,105 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:31:26,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894372817] [2023-08-30 14:31:26,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894372817] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:31:26,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:31:26,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:31:26,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370434759] [2023-08-30 14:31:26,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:31:26,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:31:26,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:31:26,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:31:26,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:31:26,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 688 [2023-08-30 14:31:26,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 135 transitions, 964 flow. Second operand has 6 states, 6 states have (on average 306.1666666666667) internal successors, (1837), 6 states have internal predecessors, (1837), 0 states have call successors, (0), 0 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 14:31:26,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:31:26,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 688 [2023-08-30 14:31:26,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:31:27,627 INFO L130 PetriNetUnfolder]: 11416/18180 cut-off events. [2023-08-30 14:31:27,627 INFO L131 PetriNetUnfolder]: For 1821/1821 co-relation queries the response was YES. [2023-08-30 14:31:27,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35775 conditions, 18180 events. 11416/18180 cut-off events. For 1821/1821 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 120638 event pairs, 9876 based on Foata normal form. 30/11254 useless extension candidates. Maximal degree in co-relation 35722. Up to 16840 conditions per place. [2023-08-30 14:31:27,735 INFO L137 encePairwiseOnDemand]: 682/688 looper letters, 142 selfloop transitions, 4 changer transitions 0/159 dead transitions. [2023-08-30 14:31:27,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 159 transitions, 1452 flow [2023-08-30 14:31:27,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:31:27,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:31:27,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1611 transitions. [2023-08-30 14:31:27,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46831395348837207 [2023-08-30 14:31:27,738 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1611 transitions. [2023-08-30 14:31:27,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1611 transitions. [2023-08-30 14:31:27,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:31:27,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1611 transitions. [2023-08-30 14:31:27,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 322.2) internal successors, (1611), 5 states have internal predecessors, (1611), 0 states have call successors, (0), 0 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 14:31:27,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 688.0) internal successors, (4128), 6 states have internal predecessors, (4128), 0 states have call successors, (0), 0 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 14:31:27,743 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 688.0) internal successors, (4128), 6 states have internal predecessors, (4128), 0 states have call successors, (0), 0 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 14:31:27,743 INFO L175 Difference]: Start difference. First operand has 183 places, 135 transitions, 964 flow. Second operand 5 states and 1611 transitions. [2023-08-30 14:31:27,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 159 transitions, 1452 flow [2023-08-30 14:31:27,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 159 transitions, 1330 flow, removed 10 selfloop flow, removed 24 redundant places. [2023-08-30 14:31:27,752 INFO L231 Difference]: Finished difference. Result has 162 places, 129 transitions, 769 flow [2023-08-30 14:31:27,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=688, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=769, PETRI_PLACES=162, PETRI_TRANSITIONS=129} [2023-08-30 14:31:27,753 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 70 predicate places. [2023-08-30 14:31:27,753 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 129 transitions, 769 flow [2023-08-30 14:31:27,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 306.1666666666667) internal successors, (1837), 6 states have internal predecessors, (1837), 0 states have call successors, (0), 0 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 14:31:27,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:31:27,754 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:31:27,801 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 14:31:27,969 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,SelfDestructingSolverStorable8 [2023-08-30 14:31:27,969 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:31:27,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:31:27,969 INFO L85 PathProgramCache]: Analyzing trace with hash -850197162, now seen corresponding path program 1 times [2023-08-30 14:31:27,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:31:27,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912250346] [2023-08-30 14:31:27,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:27,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:31:28,171 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:31:28,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781876441] [2023-08-30 14:31:28,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:28,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:28,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:31:28,172 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 14:31:28,174 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 14:31:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:31:30,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 7156 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:31:30,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:31:30,318 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-08-30 14:31:30,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:31:30,362 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-08-30 14:31:30,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:31:30,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912250346] [2023-08-30 14:31:30,362 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:31:30,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781876441] [2023-08-30 14:31:30,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781876441] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:31:30,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 14:31:30,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-30 14:31:30,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853911219] [2023-08-30 14:31:30,363 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 14:31:30,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:31:30,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:31:30,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:31:30,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:31:30,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 688 [2023-08-30 14:31:30,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 129 transitions, 769 flow. Second operand has 6 states, 6 states have (on average 311.1666666666667) internal successors, (1867), 6 states have internal predecessors, (1867), 0 states have call successors, (0), 0 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 14:31:30,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:31:30,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 688 [2023-08-30 14:31:30,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:31:32,512 INFO L130 PetriNetUnfolder]: 11472/18300 cut-off events. [2023-08-30 14:31:32,512 INFO L131 PetriNetUnfolder]: For 2843/2843 co-relation queries the response was YES. [2023-08-30 14:31:32,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36427 conditions, 18300 events. 11472/18300 cut-off events. For 2843/2843 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 119809 event pairs, 9876 based on Foata normal form. 3/11348 useless extension candidates. Maximal degree in co-relation 36374. Up to 16781 conditions per place. [2023-08-30 14:31:32,626 INFO L137 encePairwiseOnDemand]: 682/688 looper letters, 202 selfloop transitions, 18 changer transitions 0/233 dead transitions. [2023-08-30 14:31:32,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 233 transitions, 2287 flow [2023-08-30 14:31:32,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:31:32,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:31:32,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1951 transitions. [2023-08-30 14:31:32,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47262596899224807 [2023-08-30 14:31:32,629 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1951 transitions. [2023-08-30 14:31:32,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1951 transitions. [2023-08-30 14:31:32,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:31:32,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1951 transitions. [2023-08-30 14:31:32,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 325.1666666666667) internal successors, (1951), 6 states have internal predecessors, (1951), 0 states have call successors, (0), 0 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 14:31:32,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 688.0) internal successors, (4816), 7 states have internal predecessors, (4816), 0 states have call successors, (0), 0 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 14:31:32,635 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 688.0) internal successors, (4816), 7 states have internal predecessors, (4816), 0 states have call successors, (0), 0 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 14:31:32,635 INFO L175 Difference]: Start difference. First operand has 162 places, 129 transitions, 769 flow. Second operand 6 states and 1951 transitions. [2023-08-30 14:31:32,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 233 transitions, 2287 flow [2023-08-30 14:31:32,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 233 transitions, 2275 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 14:31:32,646 INFO L231 Difference]: Finished difference. Result has 167 places, 139 transitions, 1018 flow [2023-08-30 14:31:32,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=688, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1018, PETRI_PLACES=167, PETRI_TRANSITIONS=139} [2023-08-30 14:31:32,647 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 75 predicate places. [2023-08-30 14:31:32,647 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 139 transitions, 1018 flow [2023-08-30 14:31:32,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 311.1666666666667) internal successors, (1867), 6 states have internal predecessors, (1867), 0 states have call successors, (0), 0 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 14:31:32,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:31:32,647 INFO L208 CegarLoopForPetriNet]: trace histogram [34, 2, 1, 1, 1] [2023-08-30 14:31:32,669 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 14:31:32,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 14:31:32,862 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:31:32,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:31:32,862 INFO L85 PathProgramCache]: Analyzing trace with hash 853199348, now seen corresponding path program 4 times [2023-08-30 14:31:32,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:31:32,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275643432] [2023-08-30 14:31:32,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:31:32,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:31:33,080 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:31:33,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2073162599] [2023-08-30 14:31:33,080 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 14:31:33,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:31:33,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:31:33,081 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 14:31:33,084 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 14:31:44,855 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 14:31:44,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:31:44,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 8088 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:31:44,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:31:44,956 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2023-08-30 14:31:44,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:31:50,819 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2023-08-30 14:31:50,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:31:50,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275643432] [2023-08-30 14:31:50,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:31:50,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073162599] [2023-08-30 14:31:50,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073162599] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:31:50,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 14:31:50,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-08-30 14:31:50,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805588190] [2023-08-30 14:31:50,820 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 14:31:50,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:31:50,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:31:50,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:31:50,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2023-08-30 14:31:53,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-30 14:31:55,101 WARN L539 Checker$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 14:31:57,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 14:31:57,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 688 [2023-08-30 14:31:57,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 139 transitions, 1018 flow. Second operand has 6 states, 6 states have (on average 307.3333333333333) internal successors, (1844), 6 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:31:57,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:31:57,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 688 [2023-08-30 14:31:57,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:31:59,630 WARN L539 Checker$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 14:32:05,167 INFO L130 PetriNetUnfolder]: 11417/18219 cut-off events. [2023-08-30 14:32:05,167 INFO L131 PetriNetUnfolder]: For 3449/3449 co-relation queries the response was YES. [2023-08-30 14:32:05,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35943 conditions, 18219 events. 11417/18219 cut-off events. For 3449/3449 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 119773 event pairs, 9876 based on Foata normal form. 81/11345 useless extension candidates. Maximal degree in co-relation 35887. Up to 16781 conditions per place. [2023-08-30 14:32:05,286 INFO L137 encePairwiseOnDemand]: 684/688 looper letters, 170 selfloop transitions, 7 changer transitions 0/190 dead transitions. [2023-08-30 14:32:05,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 190 transitions, 1765 flow [2023-08-30 14:32:05,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:32:05,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:32:05,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1917 transitions. [2023-08-30 14:32:05,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643895348837209 [2023-08-30 14:32:05,288 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1917 transitions. [2023-08-30 14:32:05,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1917 transitions. [2023-08-30 14:32:05,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:32:05,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1917 transitions. [2023-08-30 14:32:05,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 319.5) internal successors, (1917), 6 states have internal predecessors, (1917), 0 states have call successors, (0), 0 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 14:32:05,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 688.0) internal successors, (4816), 7 states have internal predecessors, (4816), 0 states have call successors, (0), 0 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 14:32:05,293 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 688.0) internal successors, (4816), 7 states have internal predecessors, (4816), 0 states have call successors, (0), 0 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 14:32:05,293 INFO L175 Difference]: Start difference. First operand has 167 places, 139 transitions, 1018 flow. Second operand 6 states and 1917 transitions. [2023-08-30 14:32:05,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 190 transitions, 1765 flow [2023-08-30 14:32:05,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 190 transitions, 1227 flow, removed 241 selfloop flow, removed 8 redundant places. [2023-08-30 14:32:05,302 INFO L231 Difference]: Finished difference. Result has 164 places, 128 transitions, 643 flow [2023-08-30 14:32:05,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=688, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=643, PETRI_PLACES=164, PETRI_TRANSITIONS=128} [2023-08-30 14:32:05,303 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 72 predicate places. [2023-08-30 14:32:05,303 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 128 transitions, 643 flow [2023-08-30 14:32:05,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 307.3333333333333) internal successors, (1844), 6 states have internal predecessors, (1844), 0 states have call successors, (0), 0 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 14:32:05,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:32:05,303 INFO L208 CegarLoopForPetriNet]: trace histogram [120, 4, 4, 1, 1, 1, 1, 1] [2023-08-30 14:32:05,368 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 14:32:05,517 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,SelfDestructingSolverStorable10 [2023-08-30 14:32:05,517 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:32:05,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:32:05,518 INFO L85 PathProgramCache]: Analyzing trace with hash 2110244892, now seen corresponding path program 2 times [2023-08-30 14:32:05,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:32:05,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728380502] [2023-08-30 14:32:05,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:32:05,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:32:06,418 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:32:06,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [909067689] [2023-08-30 14:32:06,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:32:06,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:32:06,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:32:06,420 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 14:32:06,426 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 14:32:09,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:32:09,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:32:09,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:32:09,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:32:09,922 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7636 trivial. 0 not checked. [2023-08-30 14:32:09,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:32:09,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:32:09,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728380502] [2023-08-30 14:32:09,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:32:09,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909067689] [2023-08-30 14:32:09,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909067689] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:32:09,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:32:09,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:32:09,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537239405] [2023-08-30 14:32:09,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:32:09,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:32:09,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:32:09,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:32:09,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:32:09,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 688 [2023-08-30 14:32:09,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 128 transitions, 643 flow. Second operand has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 0 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 14:32:09,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:32:09,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 688 [2023-08-30 14:32:09,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:32:12,041 INFO L130 PetriNetUnfolder]: 11045/17971 cut-off events. [2023-08-30 14:32:12,041 INFO L131 PetriNetUnfolder]: For 2131/2131 co-relation queries the response was YES. [2023-08-30 14:32:12,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35137 conditions, 17971 events. 11045/17971 cut-off events. For 2131/2131 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 125154 event pairs, 4600 based on Foata normal form. 0/11266 useless extension candidates. Maximal degree in co-relation 35086. Up to 16564 conditions per place. [2023-08-30 14:32:12,269 INFO L137 encePairwiseOnDemand]: 684/688 looper letters, 137 selfloop transitions, 2 changer transitions 0/152 dead transitions. [2023-08-30 14:32:12,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 152 transitions, 969 flow [2023-08-30 14:32:12,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:32:12,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:32:12,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1034 transitions. [2023-08-30 14:32:12,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.500968992248062 [2023-08-30 14:32:12,271 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1034 transitions. [2023-08-30 14:32:12,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1034 transitions. [2023-08-30 14:32:12,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:32:12,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1034 transitions. [2023-08-30 14:32:12,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 344.6666666666667) internal successors, (1034), 3 states have internal predecessors, (1034), 0 states have call successors, (0), 0 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 14:32:12,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 688.0) internal successors, (2752), 4 states have internal predecessors, (2752), 0 states have call successors, (0), 0 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 14:32:12,275 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 688.0) internal successors, (2752), 4 states have internal predecessors, (2752), 0 states have call successors, (0), 0 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 14:32:12,275 INFO L175 Difference]: Start difference. First operand has 164 places, 128 transitions, 643 flow. Second operand 3 states and 1034 transitions. [2023-08-30 14:32:12,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 152 transitions, 969 flow [2023-08-30 14:32:12,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 152 transitions, 964 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 14:32:12,281 INFO L231 Difference]: Finished difference. Result has 163 places, 127 transitions, 644 flow [2023-08-30 14:32:12,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=688, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=644, PETRI_PLACES=163, PETRI_TRANSITIONS=127} [2023-08-30 14:32:12,282 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 71 predicate places. [2023-08-30 14:32:12,283 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 127 transitions, 644 flow [2023-08-30 14:32:12,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 0 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 14:32:12,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:32:12,284 INFO L208 CegarLoopForPetriNet]: trace histogram [120, 4, 4, 1, 1, 1, 1, 1] [2023-08-30 14:32:12,303 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 14:32:12,493 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,SelfDestructingSolverStorable11 [2023-08-30 14:32:12,493 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:32:12,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:32:12,493 INFO L85 PathProgramCache]: Analyzing trace with hash 2110244891, now seen corresponding path program 1 times [2023-08-30 14:32:12,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:32:12,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174840765] [2023-08-30 14:32:12,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:32:12,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:32:13,454 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:32:13,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [570743577] [2023-08-30 14:32:13,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:32:13,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:32:13,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:32:13,456 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 14:32:13,458 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 14:32:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:32:21,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 28336 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:32:21,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:32:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-08-30 14:32:21,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:32:21,724 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-08-30 14:32:21,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:32:21,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174840765] [2023-08-30 14:32:21,725 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:32:21,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570743577] [2023-08-30 14:32:21,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570743577] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:32:21,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 14:32:21,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-08-30 14:32:21,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744017056] [2023-08-30 14:32:21,725 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 14:32:21,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 14:32:21,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:32:21,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 14:32:21,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 14:32:21,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 688 [2023-08-30 14:32:21,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 127 transitions, 644 flow. Second operand has 12 states, 12 states have (on average 311.5833333333333) internal successors, (3739), 12 states have internal predecessors, (3739), 0 states have call successors, (0), 0 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 14:32:21,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:32:21,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 688 [2023-08-30 14:32:21,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:32:25,879 INFO L130 PetriNetUnfolder]: 11226/18088 cut-off events. [2023-08-30 14:32:25,880 INFO L131 PetriNetUnfolder]: For 5244/5244 co-relation queries the response was YES. [2023-08-30 14:32:25,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35882 conditions, 18088 events. 11226/18088 cut-off events. For 5244/5244 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 118485 event pairs, 9770 based on Foata normal form. 6/11310 useless extension candidates. Maximal degree in co-relation 35831. Up to 16505 conditions per place. [2023-08-30 14:32:25,970 INFO L137 encePairwiseOnDemand]: 684/688 looper letters, 393 selfloop transitions, 12 changer transitions 0/418 dead transitions. [2023-08-30 14:32:25,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 418 transitions, 3041 flow [2023-08-30 14:32:25,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:32:25,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:32:25,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3819 transitions. [2023-08-30 14:32:25,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46257267441860467 [2023-08-30 14:32:25,973 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3819 transitions. [2023-08-30 14:32:25,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3819 transitions. [2023-08-30 14:32:25,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:32:25,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3819 transitions. [2023-08-30 14:32:25,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 318.25) internal successors, (3819), 12 states have internal predecessors, (3819), 0 states have call successors, (0), 0 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 14:32:25,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 688.0) internal successors, (8944), 13 states have internal predecessors, (8944), 0 states have call successors, (0), 0 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 14:32:25,981 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 688.0) internal successors, (8944), 13 states have internal predecessors, (8944), 0 states have call successors, (0), 0 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 14:32:25,981 INFO L175 Difference]: Start difference. First operand has 163 places, 127 transitions, 644 flow. Second operand 12 states and 3819 transitions. [2023-08-30 14:32:25,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 418 transitions, 3041 flow [2023-08-30 14:32:25,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 418 transitions, 3037 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:32:25,990 INFO L231 Difference]: Finished difference. Result has 179 places, 134 transitions, 1093 flow [2023-08-30 14:32:25,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=688, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1093, PETRI_PLACES=179, PETRI_TRANSITIONS=134} [2023-08-30 14:32:25,991 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 87 predicate places. [2023-08-30 14:32:25,991 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 134 transitions, 1093 flow [2023-08-30 14:32:25,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 311.5833333333333) internal successors, (3739), 12 states have internal predecessors, (3739), 0 states have call successors, (0), 0 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 14:32:25,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:32:25,992 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1] [2023-08-30 14:32:26,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 14:32:26,212 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,SelfDestructingSolverStorable12 [2023-08-30 14:32:26,213 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:32:26,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:32:26,213 INFO L85 PathProgramCache]: Analyzing trace with hash 559936935, now seen corresponding path program 2 times [2023-08-30 14:32:26,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:32:26,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633903541] [2023-08-30 14:32:26,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:32:26,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:32:28,371 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:32:28,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363175954] [2023-08-30 14:32:28,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:32:28,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:32:28,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:32:28,372 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 14:32:28,374 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 14:32:37,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:32:37,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:32:37,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:32:37,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:32:37,537 INFO L134 CoverageAnalysis]: Checked inductivity of 47950 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47950 trivial. 0 not checked. [2023-08-30 14:32:37,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:32:37,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:32:37,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633903541] [2023-08-30 14:32:37,537 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 14:32:37,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363175954] [2023-08-30 14:32:37,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363175954] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:32:37,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:32:37,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:32:37,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127432117] [2023-08-30 14:32:37,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:32:37,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:32:37,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:32:37,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:32:37,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:32:37,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 688 [2023-08-30 14:32:37,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 134 transitions, 1093 flow. Second operand has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 0 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 14:32:37,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:32:37,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 688 [2023-08-30 14:32:37,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:32:41,319 INFO L130 PetriNetUnfolder]: 11241/18039 cut-off events. [2023-08-30 14:32:41,319 INFO L131 PetriNetUnfolder]: For 5762/5762 co-relation queries the response was YES. [2023-08-30 14:32:41,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35799 conditions, 18039 events. 11241/18039 cut-off events. For 5762/5762 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 117823 event pairs, 9748 based on Foata normal form. 0/11281 useless extension candidates. Maximal degree in co-relation 35740. Up to 16456 conditions per place. [2023-08-30 14:32:41,408 INFO L137 encePairwiseOnDemand]: 686/688 looper letters, 119 selfloop transitions, 1 changer transitions 0/133 dead transitions. [2023-08-30 14:32:41,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 133 transitions, 1331 flow [2023-08-30 14:32:41,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:32:41,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:32:41,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1007 transitions. [2023-08-30 14:32:41,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878875968992248 [2023-08-30 14:32:41,410 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1007 transitions. [2023-08-30 14:32:41,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1007 transitions. [2023-08-30 14:32:41,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:32:41,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1007 transitions. [2023-08-30 14:32:41,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:32:41,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 688.0) internal successors, (2752), 4 states have internal predecessors, (2752), 0 states have call successors, (0), 0 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 14:32:41,413 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 688.0) internal successors, (2752), 4 states have internal predecessors, (2752), 0 states have call successors, (0), 0 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 14:32:41,413 INFO L175 Difference]: Start difference. First operand has 179 places, 134 transitions, 1093 flow. Second operand 3 states and 1007 transitions. [2023-08-30 14:32:41,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 133 transitions, 1331 flow [2023-08-30 14:32:41,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 133 transitions, 1325 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 14:32:41,422 INFO L231 Difference]: Finished difference. Result has 177 places, 133 transitions, 1087 flow [2023-08-30 14:32:41,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=688, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1087, PETRI_PLACES=177, PETRI_TRANSITIONS=133} [2023-08-30 14:32:41,423 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 85 predicate places. [2023-08-30 14:32:41,423 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 133 transitions, 1087 flow [2023-08-30 14:32:41,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 0 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 14:32:41,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:32:41,424 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 2, 1, 1, 1, 1, 1] [2023-08-30 14:32:41,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 14:32:41,636 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,SelfDestructingSolverStorable13 [2023-08-30 14:32:41,637 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:32:41,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:32:41,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1228524023, now seen corresponding path program 1 times [2023-08-30 14:32:41,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:32:41,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676999970] [2023-08-30 14:32:41,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:32:41,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:32:44,366 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 14:32:44,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [221405568] [2023-08-30 14:32:44,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:32:44,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:32:44,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:32:44,368 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 14:32:44,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process Killed by 15