./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 AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/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 AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 10:36:18,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:36:18,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:36:18,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:36:18,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:36:18,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:36:18,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:36:18,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:36:18,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:36:18,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:36:18,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:36:18,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:36:18,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:36:18,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:36:18,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:36:18,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:36:18,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:36:18,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:36:18,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:36:18,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:36:18,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:36:18,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:36:18,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:36:18,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:36:18,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:36:18,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:36:18,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:36:18,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:36:18,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:36:18,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:36:18,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:36:18,153 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:36:18,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:36:18,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:36:18,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:36:18,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:36:18,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:36:18,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:36:18,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:36:18,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:36:18,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:36:18,159 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:36:18,184 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:36:18,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:36:18,185 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:36:18,185 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:36:18,186 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:36:18,186 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:36:18,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:36:18,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:36:18,187 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:36:18,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:36:18,187 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:36:18,188 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:36:18,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:36:18,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:36:18,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:36:18,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:36:18,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:36:18,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:36:18,189 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:36:18,189 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:36:18,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:36:18,189 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:36:18,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:36:18,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:36:18,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:36:18,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:36:18,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:36:18,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:36:18,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:36:18,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:36:18,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:36:18,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:36:18,191 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:36:18,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:36:18,191 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:36:18,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:36:18,191 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:36:18,192 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:36:18,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:36:18,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:36:18,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:36:18,435 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:36:18,435 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:36:18,436 INFO L432 ainManager$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 10:36:19,450 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:36:19,663 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:36:19,664 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-08-30 10:36:19,682 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6efc6732/fd5f5874af124348aea17a3d5a135fc1/FLAGaf03e48d9 [2023-08-30 10:36:19,698 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6efc6732/fd5f5874af124348aea17a3d5a135fc1 [2023-08-30 10:36:19,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:36:19,705 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:36:19,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:36:19,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:36:19,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:36:19,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:36:19" (1/1) ... [2023-08-30 10:36:19,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b88006d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:19, skipping insertion in model container [2023-08-30 10:36:19,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:36:19" (1/1) ... [2023-08-30 10:36:19,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:36:19,757 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:36:20,115 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 10:36:20,124 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 10:36:20,125 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 10:36:20,125 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 10:36:20,125 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 10:36:20,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:36:20,183 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:36:20,210 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 10:36:20,212 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 10:36:20,212 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 10:36:20,212 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 10:36:20,213 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 10:36:20,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:36:20,265 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:36:20,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:20 WrapperNode [2023-08-30 10:36:20,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:36:20,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:36:20,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:36:20,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:36:20,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:20" (1/1) ... [2023-08-30 10:36:20,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:20" (1/1) ... [2023-08-30 10:36:20,329 INFO L138 Inliner]: procedures = 278, calls = 64, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 332 [2023-08-30 10:36:20,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:36:20,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:36:20,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:36:20,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:36:20,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:20" (1/1) ... [2023-08-30 10:36:20,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:20" (1/1) ... [2023-08-30 10:36:20,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:20" (1/1) ... [2023-08-30 10:36:20,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:20" (1/1) ... [2023-08-30 10:36:20,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:20" (1/1) ... [2023-08-30 10:36:20,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:20" (1/1) ... [2023-08-30 10:36:20,377 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:20" (1/1) ... [2023-08-30 10:36:20,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:20" (1/1) ... [2023-08-30 10:36:20,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:36:20,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:36:20,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:36:20,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:36:20,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:20" (1/1) ... [2023-08-30 10:36:20,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:36:20,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:36:20,409 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 10:36:20,418 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 10:36:20,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:36:20,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 10:36:20,432 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-30 10:36:20,432 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-30 10:36:20,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:36:20,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:36:20,433 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-30 10:36:20,433 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-30 10:36:20,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:36:20,433 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 10:36:20,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 10:36:20,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:36:20,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 10:36:20,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:36:20,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:36:20,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:36:20,435 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 10:36:20,573 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:36:20,574 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:36:20,972 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:36:20,983 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:36:20,983 INFO L302 CfgBuilder]: Removed 30 assume(true) statements. [2023-08-30 10:36:20,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:36:20 BoogieIcfgContainer [2023-08-30 10:36:20,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:36:20,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:36:20,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:36:20,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:36:20,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:36:19" (1/3) ... [2023-08-30 10:36:20,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5ac568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:36:20, skipping insertion in model container [2023-08-30 10:36:20,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:20" (2/3) ... [2023-08-30 10:36:20,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5ac568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:36:20, skipping insertion in model container [2023-08-30 10:36:20,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:36:20" (3/3) ... [2023-08-30 10:36:20,993 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2023-08-30 10:36:20,998 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:36:21,005 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:36:21,005 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-08-30 10:36:21,005 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:36:21,099 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 10:36:21,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 356 transitions, 734 flow [2023-08-30 10:36:21,279 INFO L130 PetriNetUnfolder]: 77/582 cut-off events. [2023-08-30 10:36:21,280 INFO L131 PetriNetUnfolder]: For 8/13 co-relation queries the response was YES. [2023-08-30 10:36:21,293 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 10:36:21,293 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 356 transitions, 734 flow [2023-08-30 10:36:21,300 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 315 places, 356 transitions, 734 flow [2023-08-30 10:36:21,303 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:36:21,313 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 315 places, 356 transitions, 734 flow [2023-08-30 10:36:21,315 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 315 places, 356 transitions, 734 flow [2023-08-30 10:36:21,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 356 transitions, 734 flow [2023-08-30 10:36:21,409 INFO L130 PetriNetUnfolder]: 77/582 cut-off events. [2023-08-30 10:36:21,409 INFO L131 PetriNetUnfolder]: For 8/13 co-relation queries the response was YES. [2023-08-30 10:36:21,412 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 10:36:21,428 INFO L119 LiptonReduction]: Number of co-enabled transitions 44116 [2023-08-30 10:36:59,113 WARN L222 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 163 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 10:37:19,501 WARN L222 SmtUtils]: Spent 10.38s 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 10:37:25,351 WARN L222 SmtUtils]: Spent 5.85s 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 10:37:35,905 WARN L222 SmtUtils]: Spent 10.55s on a formula simplification. DAG size of input: 179 DAG size of output: 177 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 10:37:41,193 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 10:37:53,896 WARN L222 SmtUtils]: Spent 12.43s 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 10:38:01,208 WARN L222 SmtUtils]: Spent 7.31s 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 10:38:14,996 WARN L222 SmtUtils]: Spent 13.79s 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 10:38:21,948 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 10:38:21,951 INFO L134 LiptonReduction]: Checked pairs total: 74021 [2023-08-30 10:38:21,951 INFO L136 LiptonReduction]: Total number of compositions: 332 [2023-08-30 10:38:21,960 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:38:21,965 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;@d2451ff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:38:21,965 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-08-30 10:38:21,968 INFO L130 PetriNetUnfolder]: 2/7 cut-off events. [2023-08-30 10:38:21,968 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:38:21,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:38:21,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 10:38:21,969 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 10:38:21,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:38:21,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1451769, now seen corresponding path program 1 times [2023-08-30 10:38:21,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:38:21,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81982388] [2023-08-30 10:38:21,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:21,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:38:22,088 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:38:22,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520561227] [2023-08-30 10:38:22,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:22,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:38:22,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:38:22,092 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 10:38:22,125 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 10:38:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:38:22,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:38:22,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:38:22,259 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 10:38:22,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:38:22,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:38:22,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81982388] [2023-08-30 10:38:22,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:38:22,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520561227] [2023-08-30 10:38:22,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520561227] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:38:22,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:38:22,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:38:22,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274548456] [2023-08-30 10:38:22,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:38:22,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:38:22,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:38:22,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:38:22,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:38:22,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 688 [2023-08-30 10:38:22,328 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 10:38:22,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:38:22,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 688 [2023-08-30 10:38:22,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:38:23,919 INFO L130 PetriNetUnfolder]: 11416/18098 cut-off events. [2023-08-30 10:38:23,919 INFO L131 PetriNetUnfolder]: For 272/272 co-relation queries the response was YES. [2023-08-30 10:38:23,931 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 10:38:24,015 INFO L137 encePairwiseOnDemand]: 657/688 looper letters, 84 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2023-08-30 10:38:24,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 100 transitions, 396 flow [2023-08-30 10:38:24,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:38:24,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:38:24,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1040 transitions. [2023-08-30 10:38:24,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5038759689922481 [2023-08-30 10:38:24,026 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1040 transitions. [2023-08-30 10:38:24,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1040 transitions. [2023-08-30 10:38:24,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:38:24,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1040 transitions. [2023-08-30 10:38:24,034 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 10:38:24,039 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 10:38:24,040 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 10:38:24,042 INFO L175 Difference]: Start difference. First operand has 92 places, 119 transitions, 260 flow. Second operand 3 states and 1040 transitions. [2023-08-30 10:38:24,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 100 transitions, 396 flow [2023-08-30 10:38:24,046 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 10:38:24,048 INFO L231 Difference]: Finished difference. Result has 93 places, 98 transitions, 244 flow [2023-08-30 10:38:24,050 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 10:38:24,053 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 1 predicate places. [2023-08-30 10:38:24,053 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 98 transitions, 244 flow [2023-08-30 10:38:24,054 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 10:38:24,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:38:24,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 10:38:24,059 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 10:38:24,259 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 10:38:24,260 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 10:38:24,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:38:24,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1451952, now seen corresponding path program 1 times [2023-08-30 10:38:24,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:38:24,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804410310] [2023-08-30 10:38:24,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:24,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:38:24,286 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:38:24,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [708363149] [2023-08-30 10:38:24,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:24,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:38:24,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:38:24,287 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 10:38:24,289 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 10:38:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:38:24,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:38:24,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:38:24,400 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 10:38:24,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:38:24,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:38:24,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804410310] [2023-08-30 10:38:24,401 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:38:24,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708363149] [2023-08-30 10:38:24,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708363149] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:38:24,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:38:24,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:38:24,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174556207] [2023-08-30 10:38:24,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:38:24,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:38:24,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:38:24,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:38:24,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:38:24,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 688 [2023-08-30 10:38:24,439 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 10:38:24,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:38:24,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 688 [2023-08-30 10:38:24,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:38:25,401 INFO L130 PetriNetUnfolder]: 11415/18096 cut-off events. [2023-08-30 10:38:25,402 INFO L131 PetriNetUnfolder]: For 274/274 co-relation queries the response was YES. [2023-08-30 10:38:25,419 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 10:38:25,537 INFO L137 encePairwiseOnDemand]: 686/688 looper letters, 83 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2023-08-30 10:38:25,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 97 transitions, 404 flow [2023-08-30 10:38:25,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:38:25,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:38:25,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1014 transitions. [2023-08-30 10:38:25,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49127906976744184 [2023-08-30 10:38:25,541 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1014 transitions. [2023-08-30 10:38:25,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1014 transitions. [2023-08-30 10:38:25,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:38:25,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1014 transitions. [2023-08-30 10:38:25,544 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 10:38:25,546 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 10:38:25,547 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 10:38:25,547 INFO L175 Difference]: Start difference. First operand has 93 places, 98 transitions, 244 flow. Second operand 3 states and 1014 transitions. [2023-08-30 10:38:25,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 97 transitions, 404 flow [2023-08-30 10:38:25,550 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 10:38:25,551 INFO L231 Difference]: Finished difference. Result has 93 places, 97 transitions, 237 flow [2023-08-30 10:38:25,552 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 10:38:25,552 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 1 predicate places. [2023-08-30 10:38:25,553 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 97 transitions, 237 flow [2023-08-30 10:38:25,553 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 10:38:25,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:38:25,553 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-08-30 10:38:25,564 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 10:38:25,758 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 10:38:25,758 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 10:38:25,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:38:25,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1395318943, now seen corresponding path program 1 times [2023-08-30 10:38:25,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:38:25,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921550090] [2023-08-30 10:38:25,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:25,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:38:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:38:25,839 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 10:38:25,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:38:25,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921550090] [2023-08-30 10:38:25,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921550090] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:38:25,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:38:25,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:38:25,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739780106] [2023-08-30 10:38:25,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:38:25,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:38:25,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:38:25,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:38:25,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:38:25,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 688 [2023-08-30 10:38:25,854 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 10:38:25,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:38:25,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 688 [2023-08-30 10:38:25,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:38:26,870 INFO L130 PetriNetUnfolder]: 11415/18098 cut-off events. [2023-08-30 10:38:26,871 INFO L131 PetriNetUnfolder]: For 272/272 co-relation queries the response was YES. [2023-08-30 10:38:26,888 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 10:38:26,943 INFO L137 encePairwiseOnDemand]: 681/688 looper letters, 82 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2023-08-30 10:38:26,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 98 transitions, 409 flow [2023-08-30 10:38:26,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:38:26,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:38:26,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1012 transitions. [2023-08-30 10:38:26,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4903100775193798 [2023-08-30 10:38:26,961 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1012 transitions. [2023-08-30 10:38:26,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1012 transitions. [2023-08-30 10:38:26,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:38:26,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1012 transitions. [2023-08-30 10:38:26,963 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 10:38:26,966 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 10:38:26,967 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 10:38:26,967 INFO L175 Difference]: Start difference. First operand has 93 places, 97 transitions, 237 flow. Second operand 3 states and 1012 transitions. [2023-08-30 10:38:26,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 98 transitions, 409 flow [2023-08-30 10:38:26,968 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 10:38:26,969 INFO L231 Difference]: Finished difference. Result has 96 places, 98 transitions, 262 flow [2023-08-30 10:38:26,970 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 10:38:26,970 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 4 predicate places. [2023-08-30 10:38:26,970 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 98 transitions, 262 flow [2023-08-30 10:38:26,971 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 10:38:26,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:38:26,971 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-08-30 10:38:26,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 10:38:26,971 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 10:38:26,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:38:26,971 INFO L85 PathProgramCache]: Analyzing trace with hash 923557339, now seen corresponding path program 1 times [2023-08-30 10:38:26,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:38:26,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152947755] [2023-08-30 10:38:26,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:26,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:38:27,001 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:38:27,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1294240295] [2023-08-30 10:38:27,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:27,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:38:27,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:38:27,003 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 10:38:27,006 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 10:38:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:38:27,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:38:27,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:38:27,257 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 10:38:27,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:38:27,276 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 10:38:27,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:38:27,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152947755] [2023-08-30 10:38:27,276 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:38:27,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294240295] [2023-08-30 10:38:27,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294240295] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:38:27,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 10:38:27,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-30 10:38:27,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700259563] [2023-08-30 10:38:27,278 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 10:38:27,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:38:27,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:38:27,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:38:27,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:38:27,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 688 [2023-08-30 10:38:27,330 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 10:38:27,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:38:27,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 688 [2023-08-30 10:38:27,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:38:28,523 INFO L130 PetriNetUnfolder]: 11417/18110 cut-off events. [2023-08-30 10:38:28,524 INFO L131 PetriNetUnfolder]: For 276/276 co-relation queries the response was YES. [2023-08-30 10:38:28,542 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 10:38:28,590 INFO L137 encePairwiseOnDemand]: 681/688 looper letters, 86 selfloop transitions, 8 changer transitions 0/107 dead transitions. [2023-08-30 10:38:28,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 107 transitions, 498 flow [2023-08-30 10:38:28,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:38:28,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:38:28,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1955 transitions. [2023-08-30 10:38:28,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4735949612403101 [2023-08-30 10:38:28,593 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1955 transitions. [2023-08-30 10:38:28,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1955 transitions. [2023-08-30 10:38:28,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:38:28,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1955 transitions. [2023-08-30 10:38:28,597 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 10:38:28,601 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 10:38:28,603 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 10:38:28,603 INFO L175 Difference]: Start difference. First operand has 96 places, 98 transitions, 262 flow. Second operand 6 states and 1955 transitions. [2023-08-30 10:38:28,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 107 transitions, 498 flow [2023-08-30 10:38:28,605 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 10:38:28,606 INFO L231 Difference]: Finished difference. Result has 104 places, 103 transitions, 340 flow [2023-08-30 10:38:28,606 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 10:38:28,607 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 12 predicate places. [2023-08-30 10:38:28,607 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 103 transitions, 340 flow [2023-08-30 10:38:28,608 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 10:38:28,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:38:28,608 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-08-30 10:38:28,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 10:38:28,813 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 10:38:28,814 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 10:38:28,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:38:28,814 INFO L85 PathProgramCache]: Analyzing trace with hash -40460860, now seen corresponding path program 1 times [2023-08-30 10:38:28,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:38:28,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066728866] [2023-08-30 10:38:28,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:28,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:38:28,872 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:38:28,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903969827] [2023-08-30 10:38:28,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:28,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:38:28,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:38:28,873 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 10:38:28,876 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 10:38:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:38:29,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:38:29,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:38:29,204 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 10:38:29,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:38:29,260 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 10:38:29,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:38:29,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066728866] [2023-08-30 10:38:29,261 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:38:29,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903969827] [2023-08-30 10:38:29,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903969827] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:38:29,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 10:38:29,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-30 10:38:29,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37860127] [2023-08-30 10:38:29,264 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 10:38:29,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 10:38:29,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:38:29,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 10:38:29,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 10:38:29,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 688 [2023-08-30 10:38:29,413 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 10:38:29,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:38:29,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 688 [2023-08-30 10:38:29,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:38:31,561 INFO L130 PetriNetUnfolder]: 11417/18134 cut-off events. [2023-08-30 10:38:31,562 INFO L131 PetriNetUnfolder]: For 367/367 co-relation queries the response was YES. [2023-08-30 10:38:31,576 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 10:38:31,615 INFO L137 encePairwiseOnDemand]: 681/688 looper letters, 98 selfloop transitions, 14 changer transitions 0/125 dead transitions. [2023-08-30 10:38:31,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 125 transitions, 752 flow [2023-08-30 10:38:31,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:38:31,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:38:31,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3836 transitions. [2023-08-30 10:38:31,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4646317829457364 [2023-08-30 10:38:31,622 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3836 transitions. [2023-08-30 10:38:31,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3836 transitions. [2023-08-30 10:38:31,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:38:31,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3836 transitions. [2023-08-30 10:38:31,629 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 10:38:31,637 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 10:38:31,638 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 10:38:31,638 INFO L175 Difference]: Start difference. First operand has 104 places, 103 transitions, 340 flow. Second operand 12 states and 3836 transitions. [2023-08-30 10:38:31,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 125 transitions, 752 flow [2023-08-30 10:38:31,641 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 10:38:31,642 INFO L231 Difference]: Finished difference. Result has 121 places, 111 transitions, 494 flow [2023-08-30 10:38:31,642 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 10:38:31,643 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 29 predicate places. [2023-08-30 10:38:31,643 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 111 transitions, 494 flow [2023-08-30 10:38:31,644 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 10:38:31,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:38:31,644 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 2, 1, 1, 1] [2023-08-30 10:38:31,659 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 10:38:31,851 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 10:38:31,851 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 10:38:31,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:38:31,852 INFO L85 PathProgramCache]: Analyzing trace with hash 935614020, now seen corresponding path program 2 times [2023-08-30 10:38:31,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:38:31,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789264151] [2023-08-30 10:38:31,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:31,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:38:31,958 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:38:31,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1359569532] [2023-08-30 10:38:31,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:38:31,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:38:31,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:38:31,959 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 10:38:31,963 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 10:38:32,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:38:32,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:38:32,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 10:38:32,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:38:32,614 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 10:38:32,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:38:32,771 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 10:38:32,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:38:32,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789264151] [2023-08-30 10:38:32,772 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:38:32,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359569532] [2023-08-30 10:38:32,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359569532] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:38:32,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 10:38:32,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-30 10:38:32,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719398859] [2023-08-30 10:38:32,773 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 10:38:32,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 10:38:32,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:38:32,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 10:38:32,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-30 10:38:32,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 688 [2023-08-30 10:38:32,983 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 10:38:32,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:38:32,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 688 [2023-08-30 10:38:32,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:38:35,904 INFO L130 PetriNetUnfolder]: 11417/18182 cut-off events. [2023-08-30 10:38:35,904 INFO L131 PetriNetUnfolder]: For 1495/1495 co-relation queries the response was YES. [2023-08-30 10:38:35,932 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 10:38:35,982 INFO L137 encePairwiseOnDemand]: 681/688 looper letters, 122 selfloop transitions, 26 changer transitions 0/161 dead transitions. [2023-08-30 10:38:35,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 161 transitions, 1374 flow [2023-08-30 10:38:35,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 10:38:35,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 10:38:35,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 7598 transitions. [2023-08-30 10:38:35,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4601501937984496 [2023-08-30 10:38:35,997 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 7598 transitions. [2023-08-30 10:38:35,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 7598 transitions. [2023-08-30 10:38:36,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:38:36,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 7598 transitions. [2023-08-30 10:38:36,011 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 10:38:36,027 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 10:38:36,029 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 10:38:36,030 INFO L175 Difference]: Start difference. First operand has 121 places, 111 transitions, 494 flow. Second operand 24 states and 7598 transitions. [2023-08-30 10:38:36,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 161 transitions, 1374 flow [2023-08-30 10:38:36,034 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 10:38:36,036 INFO L231 Difference]: Finished difference. Result has 153 places, 125 transitions, 762 flow [2023-08-30 10:38:36,036 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 10:38:36,036 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 61 predicate places. [2023-08-30 10:38:36,036 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 125 transitions, 762 flow [2023-08-30 10:38:36,038 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 10:38:36,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:38:36,039 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 2, 1, 1, 1] [2023-08-30 10:38:36,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 10:38:36,248 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 10:38:36,248 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 10:38:36,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:38:36,248 INFO L85 PathProgramCache]: Analyzing trace with hash 381855556, now seen corresponding path program 3 times [2023-08-30 10:38:36,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:38:36,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962244579] [2023-08-30 10:38:36,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:36,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:38:36,444 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:38:36,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989359256] [2023-08-30 10:38:36,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 10:38:36,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:38:36,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:38:36,446 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 10:38:36,448 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 10:38:37,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 10:38:37,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:38:37,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 10:38:37,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:38:37,234 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 10:38:37,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:38:37,381 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 10:38:37,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:38:37,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962244579] [2023-08-30 10:38:37,381 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:38:37,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989359256] [2023-08-30 10:38:37,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989359256] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:38:37,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 10:38:37,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-30 10:38:37,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179523123] [2023-08-30 10:38:37,382 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 10:38:37,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:38:37,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:38:37,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:38:37,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:38:37,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 688 [2023-08-30 10:38:37,520 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 10:38:37,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:38:37,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 688 [2023-08-30 10:38:37,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:38:39,494 INFO L130 PetriNetUnfolder]: 11417/18179 cut-off events. [2023-08-30 10:38:39,494 INFO L131 PetriNetUnfolder]: For 854/854 co-relation queries the response was YES. [2023-08-30 10:38:39,536 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 10:38:39,588 INFO L137 encePairwiseOnDemand]: 680/688 looper letters, 98 selfloop transitions, 15 changer transitions 0/126 dead transitions. [2023-08-30 10:38:39,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 126 transitions, 996 flow [2023-08-30 10:38:39,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:38:39,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:38:39,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1910 transitions. [2023-08-30 10:38:39,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4626937984496124 [2023-08-30 10:38:39,593 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1910 transitions. [2023-08-30 10:38:39,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1910 transitions. [2023-08-30 10:38:39,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:38:39,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1910 transitions. [2023-08-30 10:38:39,596 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 10:38:39,600 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 10:38:39,600 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 10:38:39,600 INFO L175 Difference]: Start difference. First operand has 153 places, 125 transitions, 762 flow. Second operand 6 states and 1910 transitions. [2023-08-30 10:38:39,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 126 transitions, 996 flow [2023-08-30 10:38:39,608 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 10:38:39,610 INFO L231 Difference]: Finished difference. Result has 149 places, 125 transitions, 770 flow [2023-08-30 10:38:39,610 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 10:38:39,611 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 57 predicate places. [2023-08-30 10:38:39,611 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 125 transitions, 770 flow [2023-08-30 10:38:39,611 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 10:38:39,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:38:39,612 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 2, 1, 1, 1] [2023-08-30 10:38:39,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 10:38:39,819 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 10:38:39,819 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 10:38:39,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:38:39,820 INFO L85 PathProgramCache]: Analyzing trace with hash 381855499, now seen corresponding path program 1 times [2023-08-30 10:38:39,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:38:39,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764176511] [2023-08-30 10:38:39,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:39,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:38:40,009 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:38:40,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [464559082] [2023-08-30 10:38:40,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:40,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:38:40,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:38:40,011 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 10:38:40,012 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 10:38:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:38:41,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 5514 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 10:38:41,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:38:41,676 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 10:38:41,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:38:41,993 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 10:38:41,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:38:41,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764176511] [2023-08-30 10:38:41,993 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:38:41,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464559082] [2023-08-30 10:38:41,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464559082] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:38:41,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 10:38:41,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2023-08-30 10:38:41,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137243013] [2023-08-30 10:38:41,994 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 10:38:41,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 10:38:41,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:38:41,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 10:38:41,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-08-30 10:38:42,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 688 [2023-08-30 10:38:42,284 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 10:38:42,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:38:42,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 688 [2023-08-30 10:38:42,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:38:45,866 INFO L130 PetriNetUnfolder]: 11417/18211 cut-off events. [2023-08-30 10:38:45,866 INFO L131 PetriNetUnfolder]: For 5451/5451 co-relation queries the response was YES. [2023-08-30 10:38:45,895 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 10:38:45,927 INFO L137 encePairwiseOnDemand]: 681/688 looper letters, 135 selfloop transitions, 34 changer transitions 0/182 dead transitions. [2023-08-30 10:38:45,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 182 transitions, 1888 flow [2023-08-30 10:38:45,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 10:38:45,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 10:38:45,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 10079 transitions. [2023-08-30 10:38:45,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4578034156976744 [2023-08-30 10:38:45,940 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 10079 transitions. [2023-08-30 10:38:45,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 10079 transitions. [2023-08-30 10:38:45,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:38:45,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 10079 transitions. [2023-08-30 10:38:45,954 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 10:38:45,967 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 10:38:45,969 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 10:38:45,969 INFO L175 Difference]: Start difference. First operand has 149 places, 125 transitions, 770 flow. Second operand 32 states and 10079 transitions. [2023-08-30 10:38:45,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 182 transitions, 1888 flow [2023-08-30 10:38:45,977 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 10:38:45,979 INFO L231 Difference]: Finished difference. Result has 183 places, 135 transitions, 964 flow [2023-08-30 10:38:45,979 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 10:38:45,979 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 91 predicate places. [2023-08-30 10:38:45,979 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 135 transitions, 964 flow [2023-08-30 10:38:45,981 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 10:38:45,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:38:45,981 INFO L208 CegarLoopForPetriNet]: trace histogram [31, 2, 1, 1, 1] [2023-08-30 10:38:45,997 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 10:38:46,196 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 10:38:46,197 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 10:38:46,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:38:46,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1912298763, now seen corresponding path program 2 times [2023-08-30 10:38:46,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:38:46,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631857386] [2023-08-30 10:38:46,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:46,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:38:46,435 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:38:46,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076151256] [2023-08-30 10:38:46,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:38:46,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:38:46,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:38:46,437 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 10:38:46,439 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 10:38:57,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:38:57,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:38:57,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 7386 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:38:57,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:38:57,699 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 10:38:57,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:38:57,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:38:57,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631857386] [2023-08-30 10:38:57,700 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:38:57,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076151256] [2023-08-30 10:38:57,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076151256] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:38:57,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:38:57,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:38:57,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389142731] [2023-08-30 10:38:57,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:38:57,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:38:57,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:38:57,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:38:57,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:38:57,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 688 [2023-08-30 10:38:57,741 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 10:38:57,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:38:57,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 688 [2023-08-30 10:38:57,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:38:59,280 INFO L130 PetriNetUnfolder]: 11416/18180 cut-off events. [2023-08-30 10:38:59,280 INFO L131 PetriNetUnfolder]: For 1821/1821 co-relation queries the response was YES. [2023-08-30 10:38:59,336 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 10:38:59,384 INFO L137 encePairwiseOnDemand]: 682/688 looper letters, 142 selfloop transitions, 4 changer transitions 0/159 dead transitions. [2023-08-30 10:38:59,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 159 transitions, 1452 flow [2023-08-30 10:38:59,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:38:59,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:38:59,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1611 transitions. [2023-08-30 10:38:59,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46831395348837207 [2023-08-30 10:38:59,387 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1611 transitions. [2023-08-30 10:38:59,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1611 transitions. [2023-08-30 10:38:59,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:38:59,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1611 transitions. [2023-08-30 10:38:59,390 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 10:38:59,391 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 10:38:59,392 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 10:38:59,392 INFO L175 Difference]: Start difference. First operand has 183 places, 135 transitions, 964 flow. Second operand 5 states and 1611 transitions. [2023-08-30 10:38:59,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 159 transitions, 1452 flow [2023-08-30 10:38:59,400 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 10:38:59,401 INFO L231 Difference]: Finished difference. Result has 162 places, 129 transitions, 769 flow [2023-08-30 10:38:59,402 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 10:38:59,402 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 70 predicate places. [2023-08-30 10:38:59,403 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 129 transitions, 769 flow [2023-08-30 10:38:59,403 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 10:38:59,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:38:59,403 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:38:59,461 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 10:38:59,617 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 10:38:59,617 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 10:38:59,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:38:59,617 INFO L85 PathProgramCache]: Analyzing trace with hash -850197162, now seen corresponding path program 1 times [2023-08-30 10:38:59,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:38:59,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183639114] [2023-08-30 10:38:59,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:59,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:38:59,854 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:38:59,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [883560105] [2023-08-30 10:38:59,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:59,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:38:59,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:38:59,856 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 10:38:59,862 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 10:39:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:39:02,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 7156 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:39:02,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:39:02,057 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 10:39:02,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:39:02,093 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 10:39:02,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:39:02,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183639114] [2023-08-30 10:39:02,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:39:02,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883560105] [2023-08-30 10:39:02,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883560105] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:39:02,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 10:39:02,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-30 10:39:02,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199967437] [2023-08-30 10:39:02,094 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 10:39:02,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:39:02,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:39:02,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:39:02,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:39:02,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 688 [2023-08-30 10:39:02,167 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 10:39:02,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:39:02,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 688 [2023-08-30 10:39:02,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:39:04,242 INFO L130 PetriNetUnfolder]: 11472/18300 cut-off events. [2023-08-30 10:39:04,243 INFO L131 PetriNetUnfolder]: For 2843/2843 co-relation queries the response was YES. [2023-08-30 10:39:04,295 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 10:39:04,339 INFO L137 encePairwiseOnDemand]: 682/688 looper letters, 202 selfloop transitions, 18 changer transitions 0/233 dead transitions. [2023-08-30 10:39:04,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 233 transitions, 2287 flow [2023-08-30 10:39:04,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:39:04,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:39:04,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1951 transitions. [2023-08-30 10:39:04,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47262596899224807 [2023-08-30 10:39:04,341 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1951 transitions. [2023-08-30 10:39:04,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1951 transitions. [2023-08-30 10:39:04,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:39:04,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1951 transitions. [2023-08-30 10:39:04,344 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 10:39:04,346 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 10:39:04,346 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 10:39:04,347 INFO L175 Difference]: Start difference. First operand has 162 places, 129 transitions, 769 flow. Second operand 6 states and 1951 transitions. [2023-08-30 10:39:04,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 233 transitions, 2287 flow [2023-08-30 10:39:04,356 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 10:39:04,358 INFO L231 Difference]: Finished difference. Result has 167 places, 139 transitions, 1018 flow [2023-08-30 10:39:04,358 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 10:39:04,358 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 75 predicate places. [2023-08-30 10:39:04,359 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 139 transitions, 1018 flow [2023-08-30 10:39:04,359 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 10:39:04,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:39:04,359 INFO L208 CegarLoopForPetriNet]: trace histogram [34, 2, 1, 1, 1] [2023-08-30 10:39:04,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 10:39:04,559 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 10:39:04,560 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 10:39:04,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:39:04,560 INFO L85 PathProgramCache]: Analyzing trace with hash 853199348, now seen corresponding path program 4 times [2023-08-30 10:39:04,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:39:04,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578276182] [2023-08-30 10:39:04,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:39:04,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:39:04,790 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:39:04,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017308547] [2023-08-30 10:39:04,791 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 10:39:04,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:39:04,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:39:04,792 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 10:39:04,794 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 10:39:16,314 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 10:39:16,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:39:16,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 8088 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:39:16,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:39:16,407 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 10:39:16,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:39:22,609 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 10:39:22,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:39:22,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578276182] [2023-08-30 10:39:22,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:39:22,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017308547] [2023-08-30 10:39:22,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017308547] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:39:22,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 10:39:22,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-08-30 10:39:22,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152492044] [2023-08-30 10:39:22,610 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 10:39:22,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:39:22,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:39:22,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:39:22,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2023-08-30 10:39:24,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-30 10:39:27,036 WARN L539 Checker$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 10:39:27,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 688 [2023-08-30 10:39:27,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 139 transitions, 1018 flow. Second operand has 6 states, 6 states have (on average 308.3333333333333) internal successors, (1850), 6 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:27,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:39:27,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 688 [2023-08-30 10:39:27,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:39:31,454 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 10:39:37,556 INFO L130 PetriNetUnfolder]: 11417/18219 cut-off events. [2023-08-30 10:39:37,556 INFO L131 PetriNetUnfolder]: For 3449/3449 co-relation queries the response was YES. [2023-08-30 10:39:37,605 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 10:39:37,648 INFO L137 encePairwiseOnDemand]: 684/688 looper letters, 170 selfloop transitions, 7 changer transitions 0/190 dead transitions. [2023-08-30 10:39:37,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 190 transitions, 1765 flow [2023-08-30 10:39:37,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:39:37,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:39:37,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1923 transitions. [2023-08-30 10:39:37,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46584302325581395 [2023-08-30 10:39:37,650 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1923 transitions. [2023-08-30 10:39:37,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1923 transitions. [2023-08-30 10:39:37,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:39:37,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1923 transitions. [2023-08-30 10:39:37,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 320.5) internal successors, (1923), 6 states have internal predecessors, (1923), 0 states have call successors, (0), 0 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 10:39:37,654 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 10:39:37,654 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 10:39:37,654 INFO L175 Difference]: Start difference. First operand has 167 places, 139 transitions, 1018 flow. Second operand 6 states and 1923 transitions. [2023-08-30 10:39:37,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 190 transitions, 1765 flow [2023-08-30 10:39:37,662 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 10:39:37,664 INFO L231 Difference]: Finished difference. Result has 164 places, 128 transitions, 643 flow [2023-08-30 10:39:37,664 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 10:39:37,664 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 72 predicate places. [2023-08-30 10:39:37,664 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 128 transitions, 643 flow [2023-08-30 10:39:37,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 308.3333333333333) internal successors, (1850), 6 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:37,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:39:37,665 INFO L208 CegarLoopForPetriNet]: trace histogram [120, 4, 4, 1, 1, 1, 1, 1] [2023-08-30 10:39:37,731 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 10:39:37,879 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 10:39:37,879 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 10:39:37,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:39:37,879 INFO L85 PathProgramCache]: Analyzing trace with hash 2110244892, now seen corresponding path program 2 times [2023-08-30 10:39:37,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:39:37,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201399280] [2023-08-30 10:39:37,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:39:37,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:39:38,660 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:39:38,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73316992] [2023-08-30 10:39:38,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:39:38,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:39:38,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:39:38,661 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 10:39:38,662 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 10:39:41,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:39:41,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:39:41,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:39:41,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:39:41,913 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 10:39:41,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:39:41,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:39:41,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201399280] [2023-08-30 10:39:41,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:39:41,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73316992] [2023-08-30 10:39:41,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73316992] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:39:41,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:39:41,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:39:41,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081861219] [2023-08-30 10:39:41,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:39:41,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:39:41,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:39:41,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:39:41,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:39:41,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 688 [2023-08-30 10:39:41,922 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 10:39:41,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:39:41,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 688 [2023-08-30 10:39:41,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:39:43,744 INFO L130 PetriNetUnfolder]: 11045/17971 cut-off events. [2023-08-30 10:39:43,744 INFO L131 PetriNetUnfolder]: For 2131/2131 co-relation queries the response was YES. [2023-08-30 10:39:43,805 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 10:39:43,857 INFO L137 encePairwiseOnDemand]: 684/688 looper letters, 137 selfloop transitions, 2 changer transitions 0/152 dead transitions. [2023-08-30 10:39:43,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 152 transitions, 969 flow [2023-08-30 10:39:43,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:39:43,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:39:43,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1034 transitions. [2023-08-30 10:39:43,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.500968992248062 [2023-08-30 10:39:43,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1034 transitions. [2023-08-30 10:39:43,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1034 transitions. [2023-08-30 10:39:43,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:39:43,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1034 transitions. [2023-08-30 10:39:43,860 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 10:39:43,861 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 10:39:43,861 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 10:39:43,861 INFO L175 Difference]: Start difference. First operand has 164 places, 128 transitions, 643 flow. Second operand 3 states and 1034 transitions. [2023-08-30 10:39:43,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 152 transitions, 969 flow [2023-08-30 10:39:43,866 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 10:39:43,868 INFO L231 Difference]: Finished difference. Result has 163 places, 127 transitions, 644 flow [2023-08-30 10:39:43,868 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 10:39:43,868 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 71 predicate places. [2023-08-30 10:39:43,868 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 127 transitions, 644 flow [2023-08-30 10:39:43,869 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 10:39:43,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:39:43,869 INFO L208 CegarLoopForPetriNet]: trace histogram [120, 4, 4, 1, 1, 1, 1, 1] [2023-08-30 10:39:43,885 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 10:39:44,069 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 10:39:44,069 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 10:39:44,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:39:44,070 INFO L85 PathProgramCache]: Analyzing trace with hash 2110244891, now seen corresponding path program 1 times [2023-08-30 10:39:44,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:39:44,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695193997] [2023-08-30 10:39:44,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:39:44,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:39:44,870 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:39:44,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1016405760] [2023-08-30 10:39:44,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:39:44,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:39:44,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:39:44,872 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 10:39:44,881 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 10:39:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:39:52,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 28336 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:39:52,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:39:52,640 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 10:39:52,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:39:52,795 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 10:39:52,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:39:52,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695193997] [2023-08-30 10:39:52,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:39:52,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016405760] [2023-08-30 10:39:52,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016405760] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:39:52,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 10:39:52,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-08-30 10:39:52,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177015541] [2023-08-30 10:39:52,797 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 10:39:52,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 10:39:52,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:39:52,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 10:39:52,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 10:39:52,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 688 [2023-08-30 10:39:52,890 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 10:39:52,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:39:52,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 688 [2023-08-30 10:39:52,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:39:56,606 INFO L130 PetriNetUnfolder]: 11226/18088 cut-off events. [2023-08-30 10:39:56,607 INFO L131 PetriNetUnfolder]: For 5244/5244 co-relation queries the response was YES. [2023-08-30 10:39:56,644 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 10:39:56,679 INFO L137 encePairwiseOnDemand]: 684/688 looper letters, 393 selfloop transitions, 12 changer transitions 0/418 dead transitions. [2023-08-30 10:39:56,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 418 transitions, 3041 flow [2023-08-30 10:39:56,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:39:56,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:39:56,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3819 transitions. [2023-08-30 10:39:56,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46257267441860467 [2023-08-30 10:39:56,682 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3819 transitions. [2023-08-30 10:39:56,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3819 transitions. [2023-08-30 10:39:56,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:39:56,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3819 transitions. [2023-08-30 10:39:56,763 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 10:39:56,767 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 10:39:56,767 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 10:39:56,767 INFO L175 Difference]: Start difference. First operand has 163 places, 127 transitions, 644 flow. Second operand 12 states and 3819 transitions. [2023-08-30 10:39:56,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 418 transitions, 3041 flow [2023-08-30 10:39:56,774 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 10:39:56,776 INFO L231 Difference]: Finished difference. Result has 179 places, 134 transitions, 1093 flow [2023-08-30 10:39:56,777 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 10:39:56,777 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 87 predicate places. [2023-08-30 10:39:56,777 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 134 transitions, 1093 flow [2023-08-30 10:39:56,777 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 10:39:56,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:39:56,778 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1] [2023-08-30 10:39:56,844 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 10:39:56,978 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 10:39:56,978 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 10:39:56,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:39:56,978 INFO L85 PathProgramCache]: Analyzing trace with hash 559936935, now seen corresponding path program 2 times [2023-08-30 10:39:56,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:39:56,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49280312] [2023-08-30 10:39:56,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:39:56,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:39:59,192 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:39:59,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2068566457] [2023-08-30 10:39:59,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:39:59,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:39:59,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:39:59,193 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 10:39:59,406 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 10:40:07,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:40:07,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:40:08,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:40:08,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:40:08,047 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 10:40:08,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:40:08,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:40:08,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49280312] [2023-08-30 10:40:08,048 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:40:08,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068566457] [2023-08-30 10:40:08,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068566457] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:40:08,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:40:08,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:40:08,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007512863] [2023-08-30 10:40:08,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:40:08,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:40:08,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:40:08,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:40:08,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:40:08,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 688 [2023-08-30 10:40:08,057 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 10:40:08,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:40:08,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 688 [2023-08-30 10:40:08,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:40:11,735 INFO L130 PetriNetUnfolder]: 11241/18039 cut-off events. [2023-08-30 10:40:11,735 INFO L131 PetriNetUnfolder]: For 5762/5762 co-relation queries the response was YES. [2023-08-30 10:40:11,772 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 10:40:11,806 INFO L137 encePairwiseOnDemand]: 686/688 looper letters, 119 selfloop transitions, 1 changer transitions 0/133 dead transitions. [2023-08-30 10:40:11,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 133 transitions, 1331 flow [2023-08-30 10:40:11,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:40:11,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:40:11,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1007 transitions. [2023-08-30 10:40:11,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878875968992248 [2023-08-30 10:40:11,808 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1007 transitions. [2023-08-30 10:40:11,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1007 transitions. [2023-08-30 10:40:11,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:40:11,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1007 transitions. [2023-08-30 10:40:11,809 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 10:40:11,810 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 10:40:11,810 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 10:40:11,810 INFO L175 Difference]: Start difference. First operand has 179 places, 134 transitions, 1093 flow. Second operand 3 states and 1007 transitions. [2023-08-30 10:40:11,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 133 transitions, 1331 flow [2023-08-30 10:40:11,819 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 10:40:11,820 INFO L231 Difference]: Finished difference. Result has 177 places, 133 transitions, 1087 flow [2023-08-30 10:40:11,820 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 10:40:11,821 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 85 predicate places. [2023-08-30 10:40:11,821 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 133 transitions, 1087 flow [2023-08-30 10:40:11,821 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 10:40:11,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:40:11,821 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:40:11,853 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 10:40:12,021 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 10:40:12,022 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 10:40:12,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:40:12,022 INFO L85 PathProgramCache]: Analyzing trace with hash -569406657, now seen corresponding path program 1 times [2023-08-30 10:40:12,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:40:12,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125603965] [2023-08-30 10:40:12,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:12,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:40:14,619 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:40:14,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1914569301] [2023-08-30 10:40:14,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:14,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:40:14,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:40:14,621 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 10:40:14,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 10:40:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:40:34,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 70729 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:40:34,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:40:34,613 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 10:40:34,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:40:34,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:40:34,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125603965] [2023-08-30 10:40:34,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:40:34,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914569301] [2023-08-30 10:40:34,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914569301] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:40:34,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:40:34,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:40:34,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36681084] [2023-08-30 10:40:34,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:40:34,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:40:34,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:40:34,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:40:34,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:40:34,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 688 [2023-08-30 10:40:34,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 133 transitions, 1087 flow. Second operand has 3 states, 3 states have (on average 313.6666666666667) internal successors, (941), 3 states have internal predecessors, (941), 0 states have call successors, (0), 0 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 10:40:34,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:40:34,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 688 [2023-08-30 10:40:34,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:40:37,954 INFO L130 PetriNetUnfolder]: 10615/17274 cut-off events. [2023-08-30 10:40:37,954 INFO L131 PetriNetUnfolder]: For 5700/5700 co-relation queries the response was YES. [2023-08-30 10:40:37,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34331 conditions, 17274 events. 10615/17274 cut-off events. For 5700/5700 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 117502 event pairs, 1268 based on Foata normal form. 0/11056 useless extension candidates. Maximal degree in co-relation 34272. Up to 13194 conditions per place. [2023-08-30 10:40:38,023 INFO L137 encePairwiseOnDemand]: 685/688 looper letters, 161 selfloop transitions, 2 changer transitions 0/176 dead transitions. [2023-08-30 10:40:38,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 176 transitions, 1511 flow [2023-08-30 10:40:38,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:40:38,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:40:38,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1050 transitions. [2023-08-30 10:40:38,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087209302325582 [2023-08-30 10:40:38,025 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1050 transitions. [2023-08-30 10:40:38,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1050 transitions. [2023-08-30 10:40:38,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:40:38,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1050 transitions. [2023-08-30 10:40:38,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 350.0) internal successors, (1050), 3 states have internal predecessors, (1050), 0 states have call successors, (0), 0 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 10:40:38,027 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 10:40:38,027 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 10:40:38,027 INFO L175 Difference]: Start difference. First operand has 177 places, 133 transitions, 1087 flow. Second operand 3 states and 1050 transitions. [2023-08-30 10:40:38,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 176 transitions, 1511 flow [2023-08-30 10:40:38,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 176 transitions, 1510 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:40:38,037 INFO L231 Difference]: Finished difference. Result has 177 places, 132 transitions, 1088 flow [2023-08-30 10:40:38,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=688, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1088, PETRI_PLACES=177, PETRI_TRANSITIONS=132} [2023-08-30 10:40:38,037 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 85 predicate places. [2023-08-30 10:40:38,037 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 132 transitions, 1088 flow [2023-08-30 10:40:38,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 313.6666666666667) internal successors, (941), 3 states have internal predecessors, (941), 0 states have call successors, (0), 0 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 10:40:38,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:40:38,038 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:40:38,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-08-30 10:40:38,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:40:38,238 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 10:40:38,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:40:38,240 INFO L85 PathProgramCache]: Analyzing trace with hash -569406687, now seen corresponding path program 1 times [2023-08-30 10:40:38,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:40:38,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135741420] [2023-08-30 10:40:38,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:38,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:40:40,714 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:40:40,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1529347686] [2023-08-30 10:40:40,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:40,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:40:40,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:40:40,716 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:40:40,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 10:41:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:41:04,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 70729 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 10:41:04,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:41:04,178 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 10:41:04,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:41:04,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:41:04,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135741420] [2023-08-30 10:41:04,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:41:04,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529347686] [2023-08-30 10:41:04,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529347686] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:41:04,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:41:04,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:41:04,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862533951] [2023-08-30 10:41:04,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:41:04,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:41:04,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:41:04,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:41:04,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:41:04,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 688 [2023-08-30 10:41:04,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 132 transitions, 1088 flow. Second operand has 3 states, 3 states have (on average 314.6666666666667) internal successors, (944), 3 states have internal predecessors, (944), 0 states have call successors, (0), 0 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 10:41:04,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:41:04,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 688 [2023-08-30 10:41:04,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:41:07,446 INFO L130 PetriNetUnfolder]: 10289/16665 cut-off events. [2023-08-30 10:41:07,446 INFO L131 PetriNetUnfolder]: For 5981/5981 co-relation queries the response was YES. [2023-08-30 10:41:07,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33502 conditions, 16665 events. 10289/16665 cut-off events. For 5981/5981 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 108487 event pairs, 3280 based on Foata normal form. 236/11338 useless extension candidates. Maximal degree in co-relation 33443. Up to 14643 conditions per place. [2023-08-30 10:41:07,519 INFO L137 encePairwiseOnDemand]: 686/688 looper letters, 161 selfloop transitions, 1 changer transitions 0/175 dead transitions. [2023-08-30 10:41:07,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 175 transitions, 1510 flow [2023-08-30 10:41:07,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:41:07,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:41:07,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1052 transitions. [2023-08-30 10:41:07,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096899224806202 [2023-08-30 10:41:07,521 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1052 transitions. [2023-08-30 10:41:07,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1052 transitions. [2023-08-30 10:41:07,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:41:07,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1052 transitions. [2023-08-30 10:41:07,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 350.6666666666667) internal successors, (1052), 3 states have internal predecessors, (1052), 0 states have call successors, (0), 0 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 10:41:07,524 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 10:41:07,525 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 10:41:07,525 INFO L175 Difference]: Start difference. First operand has 177 places, 132 transitions, 1088 flow. Second operand 3 states and 1052 transitions. [2023-08-30 10:41:07,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 175 transitions, 1510 flow [2023-08-30 10:41:07,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 175 transitions, 1506 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:41:07,541 INFO L231 Difference]: Finished difference. Result has 176 places, 131 transitions, 1084 flow [2023-08-30 10:41:07,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=688, PETRI_DIFFERENCE_MINUEND_FLOW=1082, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1084, PETRI_PLACES=176, PETRI_TRANSITIONS=131} [2023-08-30 10:41:07,541 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 84 predicate places. [2023-08-30 10:41:07,541 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 131 transitions, 1084 flow [2023-08-30 10:41:07,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 314.6666666666667) internal successors, (944), 3 states have internal predecessors, (944), 0 states have call successors, (0), 0 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 10:41:07,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:41:07,542 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:41:07,742 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forcibly destroying the process [2023-08-30 10:41:07,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 137 [2023-08-30 10:41:07,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 10:41:07,772 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 10:41:07,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:41:07,772 INFO L85 PathProgramCache]: Analyzing trace with hash -503563235, now seen corresponding path program 1 times [2023-08-30 10:41:07,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:41:07,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281224212] [2023-08-30 10:41:07,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:41:07,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:41:10,522 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:41:10,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [712604953] [2023-08-30 10:41:10,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:41:10,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:41:10,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:41:10,523 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:41:10,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 10:41:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:41:36,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 70738 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:41:36,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:41:36,220 INFO L134 CoverageAnalysis]: Checked inductivity of 47951 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47950 trivial. 0 not checked. [2023-08-30 10:41:36,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:41:36,235 INFO L134 CoverageAnalysis]: Checked inductivity of 47951 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47950 trivial. 0 not checked. [2023-08-30 10:41:36,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:41:36,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281224212] [2023-08-30 10:41:36,235 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 10:41:36,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712604953] [2023-08-30 10:41:36,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712604953] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:41:36,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 10:41:36,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-30 10:41:36,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527937334] [2023-08-30 10:41:36,236 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 10:41:36,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:41:36,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:41:36,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:41:36,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:41:36,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 688 [2023-08-30 10:41:36,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 131 transitions, 1084 flow. Second operand has 6 states, 6 states have (on average 311.8333333333333) internal successors, (1871), 6 states have internal predecessors, (1871), 0 states have call successors, (0), 0 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 10:41:36,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:41:36,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 688 [2023-08-30 10:41:36,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:41:36,807 INFO L130 PetriNetUnfolder]: 58/468 cut-off events. [2023-08-30 10:41:36,807 INFO L131 PetriNetUnfolder]: For 5405/5405 co-relation queries the response was YES. [2023-08-30 10:41:36,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1720 conditions, 468 events. 58/468 cut-off events. For 5405/5405 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 499 event pairs, 0 based on Foata normal form. 21/471 useless extension candidates. Maximal degree in co-relation 1670. Up to 333 conditions per place. [2023-08-30 10:41:36,808 INFO L137 encePairwiseOnDemand]: 685/688 looper letters, 93 selfloop transitions, 2 changer transitions 2/102 dead transitions. [2023-08-30 10:41:36,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 102 transitions, 1203 flow [2023-08-30 10:41:36,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:41:36,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:41:36,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1290 transitions. [2023-08-30 10:41:36,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2023-08-30 10:41:36,813 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1290 transitions. [2023-08-30 10:41:36,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1290 transitions. [2023-08-30 10:41:36,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:41:36,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1290 transitions. [2023-08-30 10:41:36,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 322.5) internal successors, (1290), 4 states have internal predecessors, (1290), 0 states have call successors, (0), 0 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 10:41:36,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 688.0) internal successors, (3440), 5 states have internal predecessors, (3440), 0 states have call successors, (0), 0 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 10:41:36,816 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 688.0) internal successors, (3440), 5 states have internal predecessors, (3440), 0 states have call successors, (0), 0 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 10:41:36,816 INFO L175 Difference]: Start difference. First operand has 176 places, 131 transitions, 1084 flow. Second operand 4 states and 1290 transitions. [2023-08-30 10:41:36,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 102 transitions, 1203 flow [2023-08-30 10:41:36,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 102 transitions, 1199 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:41:36,826 INFO L231 Difference]: Finished difference. Result has 131 places, 78 transitions, 960 flow [2023-08-30 10:41:36,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=688, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=960, PETRI_PLACES=131, PETRI_TRANSITIONS=78} [2023-08-30 10:41:36,826 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 39 predicate places. [2023-08-30 10:41:36,826 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 78 transitions, 960 flow [2023-08-30 10:41:36,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 311.8333333333333) internal successors, (1871), 6 states have internal predecessors, (1871), 0 states have call successors, (0), 0 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 10:41:36,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:41:36,827 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:41:37,041 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forcibly destroying the process [2023-08-30 10:41:37,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-30 10:41:37,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 10:41:37,061 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 10:41:37,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:41:37,062 INFO L85 PathProgramCache]: Analyzing trace with hash -676437420, now seen corresponding path program 1 times [2023-08-30 10:41:37,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:41:37,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419614091] [2023-08-30 10:41:37,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:41:37,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:41:39,707 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 10:41:39,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1249993043] [2023-08-30 10:41:39,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:41:39,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:41:39,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:41:39,708 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:41:39,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process Killed by 15