./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_78-equ_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_78-equ_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 246cd07a930f0cb8d777c2eae74f25d04e3267c275b813f0c0f5232c23299340 --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 10:24:03,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:24:03,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:24:03,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:24:03,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:24:03,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:24:03,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:24:03,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:24:03,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:24:03,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:24:03,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:24:03,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:24:03,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:24:03,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:24:03,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:24:03,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:24:03,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:24:03,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:24:03,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:24:03,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:24:03,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:24:03,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:24:03,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:24:03,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:24:03,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:24:03,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:24:03,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:24:03,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:24:03,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:24:03,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:24:03,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:24:03,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:24:03,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:24:03,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:24:03,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:24:03,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:24:03,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:24:03,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:24:03,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:24:03,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:24:03,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:24:03,196 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:24:03,216 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:24:03,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:24:03,217 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:24:03,217 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:24:03,218 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:24:03,218 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:24:03,219 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:24:03,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:24:03,219 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:24:03,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:24:03,220 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:24:03,220 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:24:03,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:24:03,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:24:03,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:24:03,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:24:03,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:24:03,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:24:03,222 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:24:03,222 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:24:03,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:24:03,223 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:24:03,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:24:03,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:24:03,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:24:03,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:24:03,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:24:03,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:24:03,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:24:03,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:24:03,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:24:03,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:24:03,225 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:24:03,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:24:03,226 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:24:03,226 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:24:03,226 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:24:03,226 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 246cd07a930f0cb8d777c2eae74f25d04e3267c275b813f0c0f5232c23299340 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:24:03,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:24:03,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:24:03,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:24:03,536 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:24:03,537 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:24:03,538 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_78-equ_racing.i [2023-08-30 10:24:04,737 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:24:05,012 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:24:05,012 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_78-equ_racing.i [2023-08-30 10:24:05,031 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de1a959d9/f14e62e2a65c4d62b5c5540d5ad0b348/FLAG3838ac1f7 [2023-08-30 10:24:05,043 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de1a959d9/f14e62e2a65c4d62b5c5540d5ad0b348 [2023-08-30 10:24:05,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:24:05,046 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:24:05,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:24:05,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:24:05,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:24:05,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:24:05" (1/1) ... [2023-08-30 10:24:05,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@792c881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:24:05, skipping insertion in model container [2023-08-30 10:24:05,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:24:05" (1/1) ... [2023-08-30 10:24:05,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:24:05,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:24:05,442 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_78-equ_racing.i[47038,47051] [2023-08-30 10:24:05,470 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:24:05,482 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:24:05,531 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_78-equ_racing.i[47038,47051] [2023-08-30 10:24:05,547 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:24:05,603 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:24:05,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:24:05 WrapperNode [2023-08-30 10:24:05,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:24:05,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:24:05,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:24:05,604 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:24:05,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:24:05" (1/1) ... [2023-08-30 10:24:05,623 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:24:05" (1/1) ... [2023-08-30 10:24:05,650 INFO L138 Inliner]: procedures = 271, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 220 [2023-08-30 10:24:05,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:24:05,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:24:05,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:24:05,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:24:05,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:24:05" (1/1) ... [2023-08-30 10:24:05,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:24:05" (1/1) ... [2023-08-30 10:24:05,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:24:05" (1/1) ... [2023-08-30 10:24:05,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:24:05" (1/1) ... [2023-08-30 10:24:05,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:24:05" (1/1) ... [2023-08-30 10:24:05,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:24:05" (1/1) ... [2023-08-30 10:24:05,679 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:24:05" (1/1) ... [2023-08-30 10:24:05,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:24:05" (1/1) ... [2023-08-30 10:24:05,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:24:05,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:24:05,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:24:05,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:24:05,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:24:05" (1/1) ... [2023-08-30 10:24:05,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:24:05,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:24:05,718 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 10:24:05,737 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 10:24:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:24:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:24:05,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:24:05,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:24:05,763 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 10:24:05,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:24:05,763 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 10:24:05,763 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 10:24:05,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:24:05,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:24:05,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:24:05,765 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 10:24:05,933 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:24:05,935 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:24:06,278 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:24:06,286 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:24:06,286 INFO L302 CfgBuilder]: Removed 22 assume(true) statements. [2023-08-30 10:24:06,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:24:06 BoogieIcfgContainer [2023-08-30 10:24:06,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:24:06,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:24:06,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:24:06,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:24:06,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:24:05" (1/3) ... [2023-08-30 10:24:06,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e9e8d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:24:06, skipping insertion in model container [2023-08-30 10:24:06,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:24:05" (2/3) ... [2023-08-30 10:24:06,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e9e8d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:24:06, skipping insertion in model container [2023-08-30 10:24:06,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:24:06" (3/3) ... [2023-08-30 10:24:06,295 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_78-equ_racing.i [2023-08-30 10:24:06,302 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:24:06,309 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:24:06,309 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-30 10:24:06,309 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:24:06,383 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 10:24:06,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 231 transitions, 470 flow [2023-08-30 10:24:06,547 INFO L130 PetriNetUnfolder]: 43/308 cut-off events. [2023-08-30 10:24:06,548 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:24:06,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 308 events. 43/308 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 985 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 150. Up to 8 conditions per place. [2023-08-30 10:24:06,557 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 231 transitions, 470 flow [2023-08-30 10:24:06,566 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 226 transitions, 460 flow [2023-08-30 10:24:06,570 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:24:06,581 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 226 transitions, 460 flow [2023-08-30 10:24:06,583 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 226 transitions, 460 flow [2023-08-30 10:24:06,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 226 transitions, 460 flow [2023-08-30 10:24:06,643 INFO L130 PetriNetUnfolder]: 41/303 cut-off events. [2023-08-30 10:24:06,644 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:24:06,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 303 events. 41/303 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 997 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 150. Up to 8 conditions per place. [2023-08-30 10:24:06,651 INFO L119 LiptonReduction]: Number of co-enabled transitions 11136 [2023-08-30 10:24:13,417 INFO L134 LiptonReduction]: Checked pairs total: 25291 [2023-08-30 10:24:13,417 INFO L136 LiptonReduction]: Total number of compositions: 218 [2023-08-30 10:24:13,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:24:13,436 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;@57feee0f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:24:13,437 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 10:24:13,438 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 10:24:13,439 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:24:13,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:13,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 10:24:13,440 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:24:13,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:13,445 INFO L85 PathProgramCache]: Analyzing trace with hash 886, now seen corresponding path program 1 times [2023-08-30 10:24:13,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:13,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490363595] [2023-08-30 10:24:13,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:13,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:13,534 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 10:24:13,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:13,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490363595] [2023-08-30 10:24:13,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490363595] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:24:13,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:24:13,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 10:24:13,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4231419] [2023-08-30 10:24:13,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:24:13,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 10:24:13,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:13,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 10:24:13,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 10:24:13,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 449 [2023-08-30 10:24:13,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 78 transitions, 164 flow. Second operand has 2 states, 2 states have (on average 203.5) internal successors, (407), 2 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:13,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:13,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 449 [2023-08-30 10:24:13,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:13,767 INFO L130 PetriNetUnfolder]: 450/973 cut-off events. [2023-08-30 10:24:13,767 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:24:13,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1863 conditions, 973 events. 450/973 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 5250 event pairs, 408 based on Foata normal form. 113/826 useless extension candidates. Maximal degree in co-relation 1801. Up to 884 conditions per place. [2023-08-30 10:24:13,776 INFO L137 encePairwiseOnDemand]: 424/449 looper letters, 46 selfloop transitions, 0 changer transitions 0/53 dead transitions. [2023-08-30 10:24:13,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 206 flow [2023-08-30 10:24:13,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 10:24:13,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 10:24:13,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 477 transitions. [2023-08-30 10:24:13,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5311804008908686 [2023-08-30 10:24:13,789 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 477 transitions. [2023-08-30 10:24:13,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 477 transitions. [2023-08-30 10:24:13,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:13,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 477 transitions. [2023-08-30 10:24:13,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 238.5) internal successors, (477), 2 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:13,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 449.0) internal successors, (1347), 3 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:13,803 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 449.0) internal successors, (1347), 3 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:13,805 INFO L175 Difference]: Start difference. First operand has 59 places, 78 transitions, 164 flow. Second operand 2 states and 477 transitions. [2023-08-30 10:24:13,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 206 flow [2023-08-30 10:24:13,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 206 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:24:13,811 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 114 flow [2023-08-30 10:24:13,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=114, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2023-08-30 10:24:13,817 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2023-08-30 10:24:13,817 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 114 flow [2023-08-30 10:24:13,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 203.5) internal successors, (407), 2 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:13,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:13,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 10:24:13,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:24:13,819 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:24:13,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:13,821 INFO L85 PathProgramCache]: Analyzing trace with hash 27283261, now seen corresponding path program 1 times [2023-08-30 10:24:13,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:13,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693595447] [2023-08-30 10:24:13,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:13,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:13,980 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 10:24:13,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:13,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693595447] [2023-08-30 10:24:13,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693595447] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:24:13,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:24:13,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:24:13,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001749424] [2023-08-30 10:24:13,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:24:13,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:24:13,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:13,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:24:13,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:24:13,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 449 [2023-08-30 10:24:13,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:13,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:13,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 449 [2023-08-30 10:24:13,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:14,147 INFO L130 PetriNetUnfolder]: 432/906 cut-off events. [2023-08-30 10:24:14,148 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:24:14,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1743 conditions, 906 events. 432/906 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4863 event pairs, 224 based on Foata normal form. 0/680 useless extension candidates. Maximal degree in co-relation 1739. Up to 739 conditions per place. [2023-08-30 10:24:14,153 INFO L137 encePairwiseOnDemand]: 444/449 looper letters, 60 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2023-08-30 10:24:14,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 70 transitions, 274 flow [2023-08-30 10:24:14,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:24:14,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:24:14,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 659 transitions. [2023-08-30 10:24:14,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4892353377876763 [2023-08-30 10:24:14,157 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 659 transitions. [2023-08-30 10:24:14,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 659 transitions. [2023-08-30 10:24:14,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:14,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 659 transitions. [2023-08-30 10:24:14,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:14,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:14,165 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:14,165 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 114 flow. Second operand 3 states and 659 transitions. [2023-08-30 10:24:14,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 70 transitions, 274 flow [2023-08-30 10:24:14,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 274 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:24:14,168 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 130 flow [2023-08-30 10:24:14,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-08-30 10:24:14,170 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -1 predicate places. [2023-08-30 10:24:14,170 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 130 flow [2023-08-30 10:24:14,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:14,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:14,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 10:24:14,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 10:24:14,172 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:24:14,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:14,174 INFO L85 PathProgramCache]: Analyzing trace with hash 27283245, now seen corresponding path program 1 times [2023-08-30 10:24:14,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:14,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685231907] [2023-08-30 10:24:14,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:14,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:14,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:24:14,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:14,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685231907] [2023-08-30 10:24:14,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685231907] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:24:14,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:24:14,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:24:14,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483753484] [2023-08-30 10:24:14,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:24:14,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:24:14,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:14,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:24:14,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:24:14,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 449 [2023-08-30 10:24:14,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:14,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:14,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 449 [2023-08-30 10:24:14,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:14,519 INFO L130 PetriNetUnfolder]: 393/851 cut-off events. [2023-08-30 10:24:14,519 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-08-30 10:24:14,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1764 conditions, 851 events. 393/851 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5077 event pairs, 0 based on Foata normal form. 18/686 useless extension candidates. Maximal degree in co-relation 1758. Up to 774 conditions per place. [2023-08-30 10:24:14,524 INFO L137 encePairwiseOnDemand]: 446/449 looper letters, 60 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-08-30 10:24:14,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 69 transitions, 286 flow [2023-08-30 10:24:14,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:24:14,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:24:14,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 660 transitions. [2023-08-30 10:24:14,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48997772828507796 [2023-08-30 10:24:14,527 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 660 transitions. [2023-08-30 10:24:14,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 660 transitions. [2023-08-30 10:24:14,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:14,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 660 transitions. [2023-08-30 10:24:14,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:14,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:14,541 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:14,542 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 130 flow. Second operand 3 states and 660 transitions. [2023-08-30 10:24:14,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 69 transitions, 286 flow [2023-08-30 10:24:14,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 69 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:24:14,547 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 126 flow [2023-08-30 10:24:14,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2023-08-30 10:24:14,548 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2023-08-30 10:24:14,548 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 126 flow [2023-08-30 10:24:14,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:14,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:14,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:24:14,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 10:24:14,549 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:24:14,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:14,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1902811780, now seen corresponding path program 1 times [2023-08-30 10:24:14,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:14,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097260785] [2023-08-30 10:24:14,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:14,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:14,851 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 10:24:14,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:14,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097260785] [2023-08-30 10:24:14,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097260785] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:24:14,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:24:14,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:24:14,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007040769] [2023-08-30 10:24:14,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:24:14,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:24:14,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:14,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:24:14,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:24:14,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 449 [2023-08-30 10:24:14,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 195.75) internal successors, (783), 4 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:14,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:14,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 449 [2023-08-30 10:24:14,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:15,108 INFO L130 PetriNetUnfolder]: 396/875 cut-off events. [2023-08-30 10:24:15,112 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2023-08-30 10:24:15,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1770 conditions, 875 events. 396/875 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4810 event pairs, 178 based on Foata normal form. 15/698 useless extension candidates. Maximal degree in co-relation 1764. Up to 561 conditions per place. [2023-08-30 10:24:15,124 INFO L137 encePairwiseOnDemand]: 444/449 looper letters, 69 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2023-08-30 10:24:15,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 79 transitions, 335 flow [2023-08-30 10:24:15,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:24:15,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:24:15,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 655 transitions. [2023-08-30 10:24:15,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4862657757980698 [2023-08-30 10:24:15,127 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 655 transitions. [2023-08-30 10:24:15,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 655 transitions. [2023-08-30 10:24:15,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:15,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 655 transitions. [2023-08-30 10:24:15,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:15,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:15,134 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:15,134 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 126 flow. Second operand 3 states and 655 transitions. [2023-08-30 10:24:15,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 79 transitions, 335 flow [2023-08-30 10:24:15,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 79 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:24:15,136 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 143 flow [2023-08-30 10:24:15,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2023-08-30 10:24:15,137 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -1 predicate places. [2023-08-30 10:24:15,137 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 143 flow [2023-08-30 10:24:15,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 195.75) internal successors, (783), 4 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:15,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:15,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:24:15,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 10:24:15,139 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:24:15,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:15,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1801056472, now seen corresponding path program 1 times [2023-08-30 10:24:15,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:15,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265231551] [2023-08-30 10:24:15,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:15,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:15,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:24:15,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:15,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265231551] [2023-08-30 10:24:15,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265231551] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:24:15,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217084801] [2023-08-30 10:24:15,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:15,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:24:15,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:24:15,205 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 10:24:15,211 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 10:24:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:15,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:24:15,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:24:16,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:24:16,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:24:16,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:24:16,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217084801] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:24:16,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:24:16,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 10:24:16,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742999654] [2023-08-30 10:24:16,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:24:16,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:24:16,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:16,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:24:16,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:24:16,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 449 [2023-08-30 10:24:16,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 200.16666666666666) internal successors, (1201), 6 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:16,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:16,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 449 [2023-08-30 10:24:16,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:16,268 INFO L130 PetriNetUnfolder]: 32/106 cut-off events. [2023-08-30 10:24:16,269 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 10:24:16,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 106 events. 32/106 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 381 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 253. Up to 66 conditions per place. [2023-08-30 10:24:16,269 INFO L137 encePairwiseOnDemand]: 446/449 looper letters, 17 selfloop transitions, 2 changer transitions 17/40 dead transitions. [2023-08-30 10:24:16,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 40 transitions, 172 flow [2023-08-30 10:24:16,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:24:16,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:24:16,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 828 transitions. [2023-08-30 10:24:16,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4610244988864143 [2023-08-30 10:24:16,273 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 828 transitions. [2023-08-30 10:24:16,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 828 transitions. [2023-08-30 10:24:16,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:16,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 828 transitions. [2023-08-30 10:24:16,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:16,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 449.0) internal successors, (2245), 5 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:16,280 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 449.0) internal successors, (2245), 5 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:16,281 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 143 flow. Second operand 4 states and 828 transitions. [2023-08-30 10:24:16,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 40 transitions, 172 flow [2023-08-30 10:24:16,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 40 transitions, 163 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 10:24:16,282 INFO L231 Difference]: Finished difference. Result has 32 places, 16 transitions, 49 flow [2023-08-30 10:24:16,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=49, PETRI_PLACES=32, PETRI_TRANSITIONS=16} [2023-08-30 10:24:16,284 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -27 predicate places. [2023-08-30 10:24:16,285 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 16 transitions, 49 flow [2023-08-30 10:24:16,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 200.16666666666666) internal successors, (1201), 6 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:16,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:16,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:24:16,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 10:24:16,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:24:16,492 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:24:16,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:16,492 INFO L85 PathProgramCache]: Analyzing trace with hash -926935045, now seen corresponding path program 1 times [2023-08-30 10:24:16,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:16,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041518485] [2023-08-30 10:24:16,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:16,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:16,721 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 10:24:16,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:16,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041518485] [2023-08-30 10:24:16,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041518485] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:24:16,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:24:16,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:24:16,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941604983] [2023-08-30 10:24:16,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:24:16,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:24:16,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:16,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:24:16,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:24:16,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 449 [2023-08-30 10:24:16,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 16 transitions, 49 flow. Second operand has 6 states, 6 states have (on average 192.66666666666666) internal successors, (1156), 6 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:16,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:16,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 449 [2023-08-30 10:24:16,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:17,024 INFO L130 PetriNetUnfolder]: 13/54 cut-off events. [2023-08-30 10:24:17,025 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2023-08-30 10:24:17,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 54 events. 13/54 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 110 event pairs, 6 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 131. Up to 20 conditions per place. [2023-08-30 10:24:17,025 INFO L137 encePairwiseOnDemand]: 442/449 looper letters, 13 selfloop transitions, 8 changer transitions 0/24 dead transitions. [2023-08-30 10:24:17,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 24 transitions, 125 flow [2023-08-30 10:24:17,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:24:17,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:24:17,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1358 transitions. [2023-08-30 10:24:17,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43207126948775054 [2023-08-30 10:24:17,030 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1358 transitions. [2023-08-30 10:24:17,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1358 transitions. [2023-08-30 10:24:17,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:17,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1358 transitions. [2023-08-30 10:24:17,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 194.0) internal successors, (1358), 7 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:17,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 449.0) internal successors, (3592), 8 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:17,039 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 449.0) internal successors, (3592), 8 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:17,039 INFO L175 Difference]: Start difference. First operand has 32 places, 16 transitions, 49 flow. Second operand 7 states and 1358 transitions. [2023-08-30 10:24:17,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 24 transitions, 125 flow [2023-08-30 10:24:17,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 24 transitions, 119 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:24:17,040 INFO L231 Difference]: Finished difference. Result has 31 places, 20 transitions, 92 flow [2023-08-30 10:24:17,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=92, PETRI_PLACES=31, PETRI_TRANSITIONS=20} [2023-08-30 10:24:17,041 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -28 predicate places. [2023-08-30 10:24:17,041 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 20 transitions, 92 flow [2023-08-30 10:24:17,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.66666666666666) internal successors, (1156), 6 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:17,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:17,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:24:17,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 10:24:17,043 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:24:17,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:17,043 INFO L85 PathProgramCache]: Analyzing trace with hash -926935003, now seen corresponding path program 1 times [2023-08-30 10:24:17,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:17,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430888971] [2023-08-30 10:24:17,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:17,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:17,115 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 10:24:17,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:17,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430888971] [2023-08-30 10:24:17,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430888971] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:24:17,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:24:17,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:24:17,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715047505] [2023-08-30 10:24:17,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:24:17,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:24:17,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:17,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:24:17,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:24:17,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 449 [2023-08-30 10:24:17,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 20 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:17,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:17,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 449 [2023-08-30 10:24:17,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:17,192 INFO L130 PetriNetUnfolder]: 9/46 cut-off events. [2023-08-30 10:24:17,192 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-08-30 10:24:17,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 46 events. 9/46 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 6 based on Foata normal form. 3/49 useless extension candidates. Maximal degree in co-relation 135. Up to 24 conditions per place. [2023-08-30 10:24:17,193 INFO L137 encePairwiseOnDemand]: 444/449 looper letters, 9 selfloop transitions, 6 changer transitions 1/20 dead transitions. [2023-08-30 10:24:17,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 20 transitions, 125 flow [2023-08-30 10:24:17,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:24:17,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:24:17,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 603 transitions. [2023-08-30 10:24:17,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44766146993318484 [2023-08-30 10:24:17,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 603 transitions. [2023-08-30 10:24:17,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 603 transitions. [2023-08-30 10:24:17,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:17,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 603 transitions. [2023-08-30 10:24:17,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:17,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:17,200 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:17,200 INFO L175 Difference]: Start difference. First operand has 31 places, 20 transitions, 92 flow. Second operand 3 states and 603 transitions. [2023-08-30 10:24:17,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 20 transitions, 125 flow [2023-08-30 10:24:17,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 20 transitions, 114 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 10:24:17,201 INFO L231 Difference]: Finished difference. Result has 29 places, 18 transitions, 81 flow [2023-08-30 10:24:17,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=29, PETRI_TRANSITIONS=18} [2023-08-30 10:24:17,202 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -30 predicate places. [2023-08-30 10:24:17,202 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 18 transitions, 81 flow [2023-08-30 10:24:17,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:17,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:17,203 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:24:17,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 10:24:17,203 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:24:17,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:17,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1311324413, now seen corresponding path program 1 times [2023-08-30 10:24:17,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:17,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690489602] [2023-08-30 10:24:17,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:17,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:17,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:24:17,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:17,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690489602] [2023-08-30 10:24:17,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690489602] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:24:17,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:24:17,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:24:17,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761924523] [2023-08-30 10:24:17,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:24:17,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:24:17,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:17,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:24:17,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:24:17,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 449 [2023-08-30 10:24:17,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 18 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 195.2) internal successors, (976), 5 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:17,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:17,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 449 [2023-08-30 10:24:17,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:17,500 INFO L130 PetriNetUnfolder]: 6/31 cut-off events. [2023-08-30 10:24:17,500 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-08-30 10:24:17,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 31 events. 6/31 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 5 based on Foata normal form. 1/32 useless extension candidates. Maximal degree in co-relation 91. Up to 23 conditions per place. [2023-08-30 10:24:17,500 INFO L137 encePairwiseOnDemand]: 447/449 looper letters, 12 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-08-30 10:24:17,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 17 transitions, 102 flow [2023-08-30 10:24:17,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:24:17,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:24:17,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2023-08-30 10:24:17,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43801039346696363 [2023-08-30 10:24:17,503 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 590 transitions. [2023-08-30 10:24:17,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 590 transitions. [2023-08-30 10:24:17,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:17,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 590 transitions. [2023-08-30 10:24:17,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:17,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:17,507 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:17,507 INFO L175 Difference]: Start difference. First operand has 29 places, 18 transitions, 81 flow. Second operand 3 states and 590 transitions. [2023-08-30 10:24:17,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 17 transitions, 102 flow [2023-08-30 10:24:17,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 17 transitions, 92 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 10:24:17,508 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 68 flow [2023-08-30 10:24:17,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2023-08-30 10:24:17,509 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -32 predicate places. [2023-08-30 10:24:17,509 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 68 flow [2023-08-30 10:24:17,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 195.2) internal successors, (976), 5 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:17,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:17,510 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:24:17,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 10:24:17,510 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:24:17,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:17,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1311492785, now seen corresponding path program 1 times [2023-08-30 10:24:17,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:17,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427346680] [2023-08-30 10:24:17,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:17,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:17,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:24:17,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:17,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427346680] [2023-08-30 10:24:17,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427346680] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:24:17,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527320960] [2023-08-30 10:24:17,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:17,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:24:17,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:24:17,739 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 10:24:17,743 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 10:24:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:17,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 10:24:17,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:24:18,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:18,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:18,319 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-30 10:24:18,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-30 10:24:18,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:18,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:18,419 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-30 10:24:18,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-30 10:24:18,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:18,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-30 10:24:19,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 35 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 231 [2023-08-30 10:24:20,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:20,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-30 10:24:20,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:24:20,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:24:20,206 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_180 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_180) |c_~#B~0.base|) |c_~#B~0.offset|) 2147483648))) is different from false [2023-08-30 10:24:20,240 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_180 (Array Int Int)) (v_ArrVal_178 Int)) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#B~0.base| (store (select |c_#memory_int| |c_~#B~0.base|) |c_~#B~0.offset| v_ArrVal_178)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_180) |c_~#B~0.base|) |c_~#B~0.offset|) 2147483648)) (< v_ArrVal_178 (+ |c_t_funThread1of1ForFork0_#t~mem6#1| 1)))) is different from false [2023-08-30 10:24:20,251 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_180 (Array Int Int)) (v_ArrVal_178 Int)) (let ((.cse0 (select |c_#memory_int| |c_~#B~0.base|))) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#B~0.base| (store .cse0 |c_~#B~0.offset| v_ArrVal_178)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_180) |c_~#B~0.base|) |c_~#B~0.offset|) 2147483648)) (< v_ArrVal_178 (+ (select .cse0 |c_~#B~0.offset|) 1))))) is different from false [2023-08-30 10:24:20,313 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_180 (Array Int Int)) (v_ArrVal_178 Int) (v_ArrVal_177 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_177))) (let ((.cse1 (select .cse0 |c_~#B~0.base|))) (or (< 0 (+ (select (select (store (store .cse0 |c_~#B~0.base| (store .cse1 |c_~#B~0.offset| v_ArrVal_178)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_180) |c_~#B~0.base|) |c_~#B~0.offset|) 2147483648)) (< v_ArrVal_178 (+ (select .cse1 |c_~#B~0.offset|) 1)))))) is different from false [2023-08-30 10:24:20,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 10:24:20,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527320960] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:24:20,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:24:20,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5] total 13 [2023-08-30 10:24:20,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930241779] [2023-08-30 10:24:20,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:24:20,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 10:24:20,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:20,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 10:24:20,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=80, Unknown=4, NotChecked=84, Total=210 [2023-08-30 10:24:20,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 449 [2023-08-30 10:24:20,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 68 flow. Second operand has 15 states, 15 states have (on average 161.4) internal successors, (2421), 15 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:20,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:20,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 449 [2023-08-30 10:24:20,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:20,839 INFO L130 PetriNetUnfolder]: 7/31 cut-off events. [2023-08-30 10:24:20,840 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 10:24:20,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 31 events. 7/31 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 3 based on Foata normal form. 1/32 useless extension candidates. Maximal degree in co-relation 88. Up to 13 conditions per place. [2023-08-30 10:24:20,840 INFO L137 encePairwiseOnDemand]: 444/449 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2023-08-30 10:24:20,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 19 transitions, 111 flow [2023-08-30 10:24:20,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:24:20,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:24:20,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 970 transitions. [2023-08-30 10:24:20,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36005939123979214 [2023-08-30 10:24:20,843 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 970 transitions. [2023-08-30 10:24:20,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 970 transitions. [2023-08-30 10:24:20,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:20,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 970 transitions. [2023-08-30 10:24:20,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 161.66666666666666) internal successors, (970), 6 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:20,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 449.0) internal successors, (3143), 7 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:20,850 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 449.0) internal successors, (3143), 7 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:20,850 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 68 flow. Second operand 6 states and 970 transitions. [2023-08-30 10:24:20,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 19 transitions, 111 flow [2023-08-30 10:24:20,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 19 transitions, 105 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:24:20,851 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2023-08-30 10:24:20,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2023-08-30 10:24:20,851 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -30 predicate places. [2023-08-30 10:24:20,851 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2023-08-30 10:24:20,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 161.4) internal successors, (2421), 15 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:20,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-08-30 10:24:20,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-08-30 10:24:20,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-08-30 10:24:20,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-08-30 10:24:20,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-08-30 10:24:20,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-08-30 10:24:20,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-08-30 10:24:20,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-08-30 10:24:20,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 20 remaining) [2023-08-30 10:24:20,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 20 remaining) [2023-08-30 10:24:20,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 20 remaining) [2023-08-30 10:24:20,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 20 remaining) [2023-08-30 10:24:20,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-08-30 10:24:20,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-08-30 10:24:20,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-08-30 10:24:20,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-08-30 10:24:20,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-08-30 10:24:20,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-08-30 10:24:20,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-08-30 10:24:20,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-08-30 10:24:20,868 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 10:24:21,064 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,SelfDestructingSolverStorable8 [2023-08-30 10:24:21,064 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:24:21,066 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 10:24:21,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 231 transitions, 470 flow [2023-08-30 10:24:21,093 INFO L130 PetriNetUnfolder]: 43/308 cut-off events. [2023-08-30 10:24:21,094 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:24:21,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 308 events. 43/308 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 985 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 150. Up to 8 conditions per place. [2023-08-30 10:24:21,095 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 231 transitions, 470 flow [2023-08-30 10:24:21,096 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 216 transitions, 437 flow [2023-08-30 10:24:21,096 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:24:21,096 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 216 transitions, 437 flow [2023-08-30 10:24:21,097 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 216 transitions, 437 flow [2023-08-30 10:24:21,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 216 transitions, 437 flow [2023-08-30 10:24:21,117 INFO L130 PetriNetUnfolder]: 41/293 cut-off events. [2023-08-30 10:24:21,117 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:24:21,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 293 events. 41/293 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 945 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 150. Up to 8 conditions per place. [2023-08-30 10:24:21,123 INFO L119 LiptonReduction]: Number of co-enabled transitions 11136 [2023-08-30 10:24:26,251 INFO L134 LiptonReduction]: Checked pairs total: 22412 [2023-08-30 10:24:26,251 INFO L136 LiptonReduction]: Total number of compositions: 191 [2023-08-30 10:24:26,252 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:24:26,253 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;@57feee0f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:24:26,253 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:24:26,257 INFO L130 PetriNetUnfolder]: 11/46 cut-off events. [2023-08-30 10:24:26,257 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:24:26,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:26,257 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 10:24:26,258 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:24:26,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:26,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1821401829, now seen corresponding path program 1 times [2023-08-30 10:24:26,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:26,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958667708] [2023-08-30 10:24:26,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:26,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:24:26,271 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:24:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:24:26,292 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:24:26,292 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:24:26,293 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:24:26,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 10:24:26,293 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 10:24:26,294 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:24:26,294 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:24:26,294 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 10:24:26,314 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 10:24:26,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 297 transitions, 612 flow [2023-08-30 10:24:26,365 INFO L130 PetriNetUnfolder]: 72/487 cut-off events. [2023-08-30 10:24:26,365 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:24:26,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 487 events. 72/487 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1896 event pairs, 0 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 310. Up to 12 conditions per place. [2023-08-30 10:24:26,369 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 297 transitions, 612 flow [2023-08-30 10:24:26,373 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 259 places, 295 transitions, 608 flow [2023-08-30 10:24:26,373 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:24:26,373 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 259 places, 295 transitions, 608 flow [2023-08-30 10:24:26,373 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 259 places, 295 transitions, 608 flow [2023-08-30 10:24:26,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 295 transitions, 608 flow [2023-08-30 10:24:26,421 INFO L130 PetriNetUnfolder]: 71/485 cut-off events. [2023-08-30 10:24:26,422 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:24:26,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 485 events. 71/485 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1920 event pairs, 0 based on Foata normal form. 0/376 useless extension candidates. Maximal degree in co-relation 308. Up to 12 conditions per place. [2023-08-30 10:24:26,442 INFO L119 LiptonReduction]: Number of co-enabled transitions 32896 [2023-08-30 10:24:33,169 INFO L134 LiptonReduction]: Checked pairs total: 85937 [2023-08-30 10:24:33,170 INFO L136 LiptonReduction]: Total number of compositions: 271 [2023-08-30 10:24:33,171 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:24:33,172 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;@57feee0f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:24:33,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-30 10:24:33,172 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 10:24:33,172 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:24:33,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:33,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 10:24:33,173 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:24:33,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:33,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1711, now seen corresponding path program 1 times [2023-08-30 10:24:33,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:33,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820844524] [2023-08-30 10:24:33,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:33,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:33,178 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 10:24:33,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:33,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820844524] [2023-08-30 10:24:33,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820844524] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:24:33,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:24:33,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 10:24:33,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668843876] [2023-08-30 10:24:33,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:24:33,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 10:24:33,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:33,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 10:24:33,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 10:24:33,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 568 [2023-08-30 10:24:33,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 115 transitions, 248 flow. Second operand has 2 states, 2 states have (on average 255.5) internal successors, (511), 2 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:33,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:33,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 568 [2023-08-30 10:24:33,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:35,220 INFO L130 PetriNetUnfolder]: 19032/29617 cut-off events. [2023-08-30 10:24:35,220 INFO L131 PetriNetUnfolder]: For 133/133 co-relation queries the response was YES. [2023-08-30 10:24:35,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57888 conditions, 29617 events. 19032/29617 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 1106. Compared 214118 event pairs, 18054 based on Foata normal form. 3827/24654 useless extension candidates. Maximal degree in co-relation 25656. Up to 28153 conditions per place. [2023-08-30 10:24:35,465 INFO L137 encePairwiseOnDemand]: 533/568 looper letters, 69 selfloop transitions, 0 changer transitions 0/80 dead transitions. [2023-08-30 10:24:35,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 80 transitions, 316 flow [2023-08-30 10:24:35,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 10:24:35,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 10:24:35,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 614 transitions. [2023-08-30 10:24:35,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5404929577464789 [2023-08-30 10:24:35,467 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 614 transitions. [2023-08-30 10:24:35,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 614 transitions. [2023-08-30 10:24:35,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:35,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 614 transitions. [2023-08-30 10:24:35,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 307.0) internal successors, (614), 2 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:35,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 568.0) internal successors, (1704), 3 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:35,471 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 568.0) internal successors, (1704), 3 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:35,471 INFO L175 Difference]: Start difference. First operand has 84 places, 115 transitions, 248 flow. Second operand 2 states and 614 transitions. [2023-08-30 10:24:35,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 80 transitions, 316 flow [2023-08-30 10:24:35,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 80 transitions, 316 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:24:35,473 INFO L231 Difference]: Finished difference. Result has 81 places, 80 transitions, 178 flow [2023-08-30 10:24:35,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=178, PETRI_PLACES=81, PETRI_TRANSITIONS=80} [2023-08-30 10:24:35,475 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -3 predicate places. [2023-08-30 10:24:35,475 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 80 transitions, 178 flow [2023-08-30 10:24:35,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 255.5) internal successors, (511), 2 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:35,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:35,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:24:35,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 10:24:35,476 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:24:35,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:35,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1632482291, now seen corresponding path program 1 times [2023-08-30 10:24:35,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:35,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584875068] [2023-08-30 10:24:35,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:35,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:35,504 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 10:24:35,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:35,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584875068] [2023-08-30 10:24:35,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584875068] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:24:35,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:24:35,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:24:35,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6693263] [2023-08-30 10:24:35,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:24:35,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:24:35,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:35,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:24:35,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:24:35,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 568 [2023-08-30 10:24:35,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 251.33333333333334) internal successors, (754), 3 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:35,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:35,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 568 [2023-08-30 10:24:35,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:37,296 INFO L130 PetriNetUnfolder]: 17851/28032 cut-off events. [2023-08-30 10:24:37,296 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2023-08-30 10:24:37,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55203 conditions, 28032 events. 17851/28032 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 214860 event pairs, 1746 based on Foata normal form. 0/19961 useless extension candidates. Maximal degree in co-relation 55198. Up to 24164 conditions per place. [2023-08-30 10:24:37,431 INFO L137 encePairwiseOnDemand]: 563/568 looper letters, 102 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2023-08-30 10:24:37,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 116 transitions, 460 flow [2023-08-30 10:24:37,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:24:37,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:24:37,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 857 transitions. [2023-08-30 10:24:37,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029342723004695 [2023-08-30 10:24:37,435 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 857 transitions. [2023-08-30 10:24:37,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 857 transitions. [2023-08-30 10:24:37,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:37,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 857 transitions. [2023-08-30 10:24:37,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 285.6666666666667) internal successors, (857), 3 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:37,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 568.0) internal successors, (2272), 4 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:37,442 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 568.0) internal successors, (2272), 4 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:37,442 INFO L175 Difference]: Start difference. First operand has 81 places, 80 transitions, 178 flow. Second operand 3 states and 857 transitions. [2023-08-30 10:24:37,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 116 transitions, 460 flow [2023-08-30 10:24:37,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 116 transitions, 460 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:24:37,447 INFO L231 Difference]: Finished difference. Result has 84 places, 80 transitions, 194 flow [2023-08-30 10:24:37,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=84, PETRI_TRANSITIONS=80} [2023-08-30 10:24:37,448 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 0 predicate places. [2023-08-30 10:24:37,448 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 80 transitions, 194 flow [2023-08-30 10:24:37,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.33333333333334) internal successors, (754), 3 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:37,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:37,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:24:37,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 10:24:37,449 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:24:37,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:37,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1632482205, now seen corresponding path program 1 times [2023-08-30 10:24:37,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:37,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237358664] [2023-08-30 10:24:37,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:37,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:37,487 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 10:24:37,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:37,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237358664] [2023-08-30 10:24:37,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237358664] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:24:37,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:24:37,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:24:37,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921130605] [2023-08-30 10:24:37,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:24:37,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:24:37,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:37,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:24:37,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:24:37,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 568 [2023-08-30 10:24:37,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 80 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:37,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:37,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 568 [2023-08-30 10:24:37,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:39,188 INFO L130 PetriNetUnfolder]: 18115/28273 cut-off events. [2023-08-30 10:24:39,189 INFO L131 PetriNetUnfolder]: For 2612/2612 co-relation queries the response was YES. [2023-08-30 10:24:39,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57334 conditions, 28273 events. 18115/28273 cut-off events. For 2612/2612 co-relation queries the response was YES. Maximal size of possible extension queue 1022. Compared 205564 event pairs, 8316 based on Foata normal form. 19/20847 useless extension candidates. Maximal degree in co-relation 57327. Up to 26994 conditions per place. [2023-08-30 10:24:39,329 INFO L137 encePairwiseOnDemand]: 565/568 looper letters, 86 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-08-30 10:24:39,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 99 transitions, 412 flow [2023-08-30 10:24:39,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:24:39,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:24:39,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 842 transitions. [2023-08-30 10:24:39,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49413145539906106 [2023-08-30 10:24:39,333 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 842 transitions. [2023-08-30 10:24:39,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 842 transitions. [2023-08-30 10:24:39,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:39,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 842 transitions. [2023-08-30 10:24:39,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.6666666666667) internal successors, (842), 3 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:39,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 568.0) internal successors, (2272), 4 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:39,339 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 568.0) internal successors, (2272), 4 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:39,339 INFO L175 Difference]: Start difference. First operand has 84 places, 80 transitions, 194 flow. Second operand 3 states and 842 transitions. [2023-08-30 10:24:39,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 99 transitions, 412 flow [2023-08-30 10:24:39,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 99 transitions, 404 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:24:39,344 INFO L231 Difference]: Finished difference. Result has 85 places, 81 transitions, 202 flow [2023-08-30 10:24:39,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=85, PETRI_TRANSITIONS=81} [2023-08-30 10:24:39,345 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 1 predicate places. [2023-08-30 10:24:39,345 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 81 transitions, 202 flow [2023-08-30 10:24:39,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:39,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:39,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:24:39,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 10:24:39,358 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:24:39,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:39,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1678228258, now seen corresponding path program 1 times [2023-08-30 10:24:39,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:39,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917178065] [2023-08-30 10:24:39,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:39,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:39,466 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 10:24:39,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:39,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917178065] [2023-08-30 10:24:39,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917178065] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:24:39,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:24:39,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:24:39,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139218754] [2023-08-30 10:24:39,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:24:39,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:24:39,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:39,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:24:39,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:24:39,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 568 [2023-08-30 10:24:39,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 81 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 244.5) internal successors, (978), 4 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:39,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:39,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 568 [2023-08-30 10:24:39,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:41,202 INFO L130 PetriNetUnfolder]: 19638/31077 cut-off events. [2023-08-30 10:24:41,202 INFO L131 PetriNetUnfolder]: For 2087/2087 co-relation queries the response was YES. [2023-08-30 10:24:41,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63163 conditions, 31077 events. 19638/31077 cut-off events. For 2087/2087 co-relation queries the response was YES. Maximal size of possible extension queue 1217. Compared 232158 event pairs, 7026 based on Foata normal form. 0/23424 useless extension candidates. Maximal degree in co-relation 63155. Up to 23113 conditions per place. [2023-08-30 10:24:41,339 INFO L137 encePairwiseOnDemand]: 553/568 looper letters, 152 selfloop transitions, 12 changer transitions 0/175 dead transitions. [2023-08-30 10:24:41,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 175 transitions, 760 flow [2023-08-30 10:24:41,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:24:41,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:24:41,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1143 transitions. [2023-08-30 10:24:41,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503080985915493 [2023-08-30 10:24:41,343 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1143 transitions. [2023-08-30 10:24:41,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1143 transitions. [2023-08-30 10:24:41,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:41,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1143 transitions. [2023-08-30 10:24:41,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.75) internal successors, (1143), 4 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:41,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 568.0) internal successors, (2840), 5 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:41,350 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 568.0) internal successors, (2840), 5 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:41,350 INFO L175 Difference]: Start difference. First operand has 85 places, 81 transitions, 202 flow. Second operand 4 states and 1143 transitions. [2023-08-30 10:24:41,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 175 transitions, 760 flow [2023-08-30 10:24:41,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 175 transitions, 757 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:24:41,353 INFO L231 Difference]: Finished difference. Result has 90 places, 92 transitions, 308 flow [2023-08-30 10:24:41,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=90, PETRI_TRANSITIONS=92} [2023-08-30 10:24:41,354 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 6 predicate places. [2023-08-30 10:24:41,354 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 92 transitions, 308 flow [2023-08-30 10:24:41,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 244.5) internal successors, (978), 4 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:41,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:41,355 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:24:41,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 10:24:41,355 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:24:41,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:41,356 INFO L85 PathProgramCache]: Analyzing trace with hash -577709025, now seen corresponding path program 1 times [2023-08-30 10:24:41,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:41,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796177528] [2023-08-30 10:24:41,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:41,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:41,383 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:24:41,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:41,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796177528] [2023-08-30 10:24:41,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796177528] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:24:41,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:24:41,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:24:41,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887162166] [2023-08-30 10:24:41,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:24:41,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:24:41,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:41,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:24:41,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:24:41,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 568 [2023-08-30 10:24:41,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 92 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:41,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:41,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 568 [2023-08-30 10:24:41,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:43,139 INFO L130 PetriNetUnfolder]: 18965/30068 cut-off events. [2023-08-30 10:24:43,139 INFO L131 PetriNetUnfolder]: For 8082/8082 co-relation queries the response was YES. [2023-08-30 10:24:43,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69235 conditions, 30068 events. 18965/30068 cut-off events. For 8082/8082 co-relation queries the response was YES. Maximal size of possible extension queue 1174. Compared 223059 event pairs, 17142 based on Foata normal form. 368/25059 useless extension candidates. Maximal degree in co-relation 69225. Up to 28931 conditions per place. [2023-08-30 10:24:43,279 INFO L137 encePairwiseOnDemand]: 566/568 looper letters, 79 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2023-08-30 10:24:43,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 91 transitions, 464 flow [2023-08-30 10:24:43,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:24:43,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:24:43,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 821 transitions. [2023-08-30 10:24:43,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818075117370892 [2023-08-30 10:24:43,283 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 821 transitions. [2023-08-30 10:24:43,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 821 transitions. [2023-08-30 10:24:43,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:43,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 821 transitions. [2023-08-30 10:24:43,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:43,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 568.0) internal successors, (2272), 4 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:43,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 568.0) internal successors, (2272), 4 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:43,289 INFO L175 Difference]: Start difference. First operand has 90 places, 92 transitions, 308 flow. Second operand 3 states and 821 transitions. [2023-08-30 10:24:43,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 91 transitions, 464 flow [2023-08-30 10:24:43,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 91 transitions, 464 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:24:43,299 INFO L231 Difference]: Finished difference. Result has 91 places, 91 transitions, 306 flow [2023-08-30 10:24:43,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=306, PETRI_PLACES=91, PETRI_TRANSITIONS=91} [2023-08-30 10:24:43,300 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 7 predicate places. [2023-08-30 10:24:43,300 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 91 transitions, 306 flow [2023-08-30 10:24:43,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:43,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:43,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:24:43,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 10:24:43,301 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:24:43,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:43,302 INFO L85 PathProgramCache]: Analyzing trace with hash -695489920, now seen corresponding path program 1 times [2023-08-30 10:24:43,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:43,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639553207] [2023-08-30 10:24:43,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:43,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:43,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:24:43,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:43,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639553207] [2023-08-30 10:24:43,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639553207] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:24:43,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650312067] [2023-08-30 10:24:43,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:43,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:24:43,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:24:43,361 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 10:24:43,390 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 10:24:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:43,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:24:43,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:24:44,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:24:44,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:24:44,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:24:44,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650312067] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:24:44,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:24:44,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 10:24:44,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737644294] [2023-08-30 10:24:44,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:24:44,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:24:44,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:44,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:24:44,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:24:44,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 568 [2023-08-30 10:24:44,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 252.16666666666666) internal successors, (1513), 6 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:44,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:44,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 568 [2023-08-30 10:24:44,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:44,399 INFO L130 PetriNetUnfolder]: 1766/3341 cut-off events. [2023-08-30 10:24:44,399 INFO L131 PetriNetUnfolder]: For 1986/1986 co-relation queries the response was YES. [2023-08-30 10:24:44,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9246 conditions, 3341 events. 1766/3341 cut-off events. For 1986/1986 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 22622 event pairs, 32 based on Foata normal form. 387/3386 useless extension candidates. Maximal degree in co-relation 9235. Up to 2121 conditions per place. [2023-08-30 10:24:44,409 INFO L137 encePairwiseOnDemand]: 565/568 looper letters, 100 selfloop transitions, 3 changer transitions 2/113 dead transitions. [2023-08-30 10:24:44,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 113 transitions, 576 flow [2023-08-30 10:24:44,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:24:44,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:24:44,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1348 transitions. [2023-08-30 10:24:44,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47464788732394364 [2023-08-30 10:24:44,412 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1348 transitions. [2023-08-30 10:24:44,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1348 transitions. [2023-08-30 10:24:44,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:44,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1348 transitions. [2023-08-30 10:24:44,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 269.6) internal successors, (1348), 5 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:44,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 568.0) internal successors, (3408), 6 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:44,419 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 568.0) internal successors, (3408), 6 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:44,420 INFO L175 Difference]: Start difference. First operand has 91 places, 91 transitions, 306 flow. Second operand 5 states and 1348 transitions. [2023-08-30 10:24:44,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 113 transitions, 576 flow [2023-08-30 10:24:44,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 113 transitions, 573 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 10:24:44,424 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 195 flow [2023-08-30 10:24:44,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2023-08-30 10:24:44,425 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -16 predicate places. [2023-08-30 10:24:44,425 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 195 flow [2023-08-30 10:24:44,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.16666666666666) internal successors, (1513), 6 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:44,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:44,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:24:44,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 10:24:44,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:24:44,631 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:24:44,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:44,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1482389054, now seen corresponding path program 1 times [2023-08-30 10:24:44,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:44,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981201368] [2023-08-30 10:24:44,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:44,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:44,703 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 10:24:44,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:44,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981201368] [2023-08-30 10:24:44,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981201368] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:24:44,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:24:44,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:24:44,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335511889] [2023-08-30 10:24:44,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:24:44,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:24:44,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:44,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:24:44,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:24:44,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 568 [2023-08-30 10:24:44,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 195 flow. Second operand has 4 states, 4 states have (on average 243.5) internal successors, (974), 4 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:44,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:44,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 568 [2023-08-30 10:24:44,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:45,215 INFO L130 PetriNetUnfolder]: 2297/4258 cut-off events. [2023-08-30 10:24:45,216 INFO L131 PetriNetUnfolder]: For 4721/4721 co-relation queries the response was YES. [2023-08-30 10:24:45,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11673 conditions, 4258 events. 2297/4258 cut-off events. For 4721/4721 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 29573 event pairs, 904 based on Foata normal form. 0/3874 useless extension candidates. Maximal degree in co-relation 11662. Up to 1830 conditions per place. [2023-08-30 10:24:45,236 INFO L137 encePairwiseOnDemand]: 554/568 looper letters, 100 selfloop transitions, 25 changer transitions 0/133 dead transitions. [2023-08-30 10:24:45,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 133 transitions, 712 flow [2023-08-30 10:24:45,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:24:45,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:24:45,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1323 transitions. [2023-08-30 10:24:45,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658450704225352 [2023-08-30 10:24:45,240 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1323 transitions. [2023-08-30 10:24:45,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1323 transitions. [2023-08-30 10:24:45,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:45,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1323 transitions. [2023-08-30 10:24:45,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 264.6) internal successors, (1323), 5 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:45,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 568.0) internal successors, (3408), 6 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:45,247 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 568.0) internal successors, (3408), 6 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:45,247 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 195 flow. Second operand 5 states and 1323 transitions. [2023-08-30 10:24:45,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 133 transitions, 712 flow [2023-08-30 10:24:45,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 133 transitions, 695 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 10:24:45,254 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 398 flow [2023-08-30 10:24:45,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=398, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2023-08-30 10:24:45,255 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -11 predicate places. [2023-08-30 10:24:45,255 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 398 flow [2023-08-30 10:24:45,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 243.5) internal successors, (974), 4 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:45,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:45,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:24:45,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 10:24:45,256 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:24:45,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:45,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1482388994, now seen corresponding path program 1 times [2023-08-30 10:24:45,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:45,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809836813] [2023-08-30 10:24:45,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:45,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:45,426 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 10:24:45,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:45,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809836813] [2023-08-30 10:24:45,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809836813] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:24:45,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:24:45,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:24:45,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214923053] [2023-08-30 10:24:45,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:24:45,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:24:45,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:45,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:24:45,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:24:45,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 568 [2023-08-30 10:24:45,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 398 flow. Second operand has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:45,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:45,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 568 [2023-08-30 10:24:45,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:46,247 INFO L130 PetriNetUnfolder]: 2421/4597 cut-off events. [2023-08-30 10:24:46,247 INFO L131 PetriNetUnfolder]: For 8843/8846 co-relation queries the response was YES. [2023-08-30 10:24:46,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14558 conditions, 4597 events. 2421/4597 cut-off events. For 8843/8846 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 32698 event pairs, 746 based on Foata normal form. 93/4535 useless extension candidates. Maximal degree in co-relation 14545. Up to 2327 conditions per place. [2023-08-30 10:24:46,260 INFO L137 encePairwiseOnDemand]: 552/568 looper letters, 136 selfloop transitions, 34 changer transitions 4/182 dead transitions. [2023-08-30 10:24:46,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 182 transitions, 1239 flow [2023-08-30 10:24:46,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 10:24:46,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 10:24:46,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2056 transitions. [2023-08-30 10:24:46,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4524647887323944 [2023-08-30 10:24:46,265 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2056 transitions. [2023-08-30 10:24:46,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2056 transitions. [2023-08-30 10:24:46,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:46,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2056 transitions. [2023-08-30 10:24:46,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 257.0) internal successors, (2056), 8 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:46,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 568.0) internal successors, (5112), 9 states have internal predecessors, (5112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:46,274 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 568.0) internal successors, (5112), 9 states have internal predecessors, (5112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:46,274 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 398 flow. Second operand 8 states and 2056 transitions. [2023-08-30 10:24:46,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 182 transitions, 1239 flow [2023-08-30 10:24:46,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 182 transitions, 1239 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:24:46,285 INFO L231 Difference]: Finished difference. Result has 84 places, 96 transitions, 756 flow [2023-08-30 10:24:46,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=756, PETRI_PLACES=84, PETRI_TRANSITIONS=96} [2023-08-30 10:24:46,285 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 0 predicate places. [2023-08-30 10:24:46,286 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 96 transitions, 756 flow [2023-08-30 10:24:46,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:46,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:46,286 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:24:46,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 10:24:46,287 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:24:46,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:46,287 INFO L85 PathProgramCache]: Analyzing trace with hash -719322331, now seen corresponding path program 1 times [2023-08-30 10:24:46,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:46,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681981667] [2023-08-30 10:24:46,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:46,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:46,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:24:46,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:46,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681981667] [2023-08-30 10:24:46,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681981667] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:24:46,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880581134] [2023-08-30 10:24:46,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:46,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:24:46,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:24:46,533 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 10:24:46,556 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 10:24:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:46,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 10:24:46,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:24:47,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:47,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:47,065 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-30 10:24:47,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-30 10:24:47,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:47,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:47,097 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-30 10:24:47,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-30 10:24:47,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:24:47,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:24:47,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:24:47,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:24:47,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880581134] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:24:47,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:24:47,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2023-08-30 10:24:47,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924145215] [2023-08-30 10:24:47,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:24:47,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:24:47,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:47,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:24:47,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-08-30 10:24:47,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 568 [2023-08-30 10:24:47,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 96 transitions, 756 flow. Second operand has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:47,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:47,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 568 [2023-08-30 10:24:47,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:47,957 INFO L130 PetriNetUnfolder]: 2347/4396 cut-off events. [2023-08-30 10:24:47,957 INFO L131 PetriNetUnfolder]: For 15407/15410 co-relation queries the response was YES. [2023-08-30 10:24:47,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15719 conditions, 4396 events. 2347/4396 cut-off events. For 15407/15410 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 30251 event pairs, 1537 based on Foata normal form. 60/4306 useless extension candidates. Maximal degree in co-relation 15702. Up to 3183 conditions per place. [2023-08-30 10:24:47,974 INFO L137 encePairwiseOnDemand]: 557/568 looper letters, 93 selfloop transitions, 19 changer transitions 7/127 dead transitions. [2023-08-30 10:24:47,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 127 transitions, 1084 flow [2023-08-30 10:24:47,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:24:47,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:24:47,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1278 transitions. [2023-08-30 10:24:47,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2023-08-30 10:24:47,984 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1278 transitions. [2023-08-30 10:24:47,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1278 transitions. [2023-08-30 10:24:47,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:47,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1278 transitions. [2023-08-30 10:24:47,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 255.6) internal successors, (1278), 5 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:47,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 568.0) internal successors, (3408), 6 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:47,991 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 568.0) internal successors, (3408), 6 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:47,991 INFO L175 Difference]: Start difference. First operand has 84 places, 96 transitions, 756 flow. Second operand 5 states and 1278 transitions. [2023-08-30 10:24:47,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 127 transitions, 1084 flow [2023-08-30 10:24:48,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 127 transitions, 1043 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-30 10:24:48,017 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 720 flow [2023-08-30 10:24:48,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=720, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2023-08-30 10:24:48,017 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 3 predicate places. [2023-08-30 10:24:48,018 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 720 flow [2023-08-30 10:24:48,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:48,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:48,018 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:24:48,028 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 10:24:48,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:24:48,226 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:24:48,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:48,226 INFO L85 PathProgramCache]: Analyzing trace with hash -719322391, now seen corresponding path program 1 times [2023-08-30 10:24:48,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:48,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329506347] [2023-08-30 10:24:48,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:48,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:48,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:24:48,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:48,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329506347] [2023-08-30 10:24:48,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329506347] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:24:48,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043863217] [2023-08-30 10:24:48,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:48,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:24:48,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:24:48,383 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 10:24:48,385 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 10:24:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:48,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 10:24:48,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:24:48,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:48,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:48,882 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-30 10:24:48,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-30 10:24:48,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:48,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:48,984 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-30 10:24:48,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-30 10:24:49,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:49,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-30 10:24:50,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 35 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 231 [2023-08-30 10:24:50,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:50,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-30 10:24:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:24:51,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:24:51,045 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_411 Int) (v_ArrVal_413 (Array Int Int))) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#B~0.base| (store (select |c_#memory_int| |c_~#B~0.base|) |c_~#B~0.offset| v_ArrVal_411)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_413) |c_~#B~0.base|) |c_~#B~0.offset|) 2147483648)) (< v_ArrVal_411 (+ |c_t_funThread1of2ForFork0_#t~post7#1| 1)))) is different from false [2023-08-30 10:24:51,056 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_411 Int) (v_ArrVal_413 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_~#B~0.base|))) (or (< v_ArrVal_411 (+ (select .cse0 |c_~#B~0.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#B~0.base| (store .cse0 |c_~#B~0.offset| v_ArrVal_411)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_413) |c_~#B~0.base|) |c_~#B~0.offset|) 2147483648))))) is different from false [2023-08-30 10:24:51,106 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_411 Int) (v_ArrVal_413 (Array Int Int)) (v_ArrVal_410 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_410))) (let ((.cse1 (select .cse0 |c_~#B~0.base|))) (or (< 0 (+ (select (select (store (store .cse0 |c_~#B~0.base| (store .cse1 |c_~#B~0.offset| v_ArrVal_411)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_413) |c_~#B~0.base|) |c_~#B~0.offset|) 2147483648)) (< v_ArrVal_411 (+ (select .cse1 |c_~#B~0.offset|) 1)))))) is different from false [2023-08-30 10:24:51,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 10:24:51,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043863217] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:24:51,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:24:51,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5] total 13 [2023-08-30 10:24:51,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504610134] [2023-08-30 10:24:51,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:24:51,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 10:24:51,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:51,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 10:24:51,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=92, Unknown=3, NotChecked=66, Total=210 [2023-08-30 10:24:51,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 568 [2023-08-30 10:24:51,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 720 flow. Second operand has 15 states, 15 states have (on average 204.4) internal successors, (3066), 15 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:51,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:51,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 568 [2023-08-30 10:24:51,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:52,013 INFO L130 PetriNetUnfolder]: 2362/4523 cut-off events. [2023-08-30 10:24:52,013 INFO L131 PetriNetUnfolder]: For 17719/17722 co-relation queries the response was YES. [2023-08-30 10:24:52,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16784 conditions, 4523 events. 2362/4523 cut-off events. For 17719/17722 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 31925 event pairs, 814 based on Foata normal form. 65/4441 useless extension candidates. Maximal degree in co-relation 16764. Up to 1795 conditions per place. [2023-08-30 10:24:52,032 INFO L137 encePairwiseOnDemand]: 551/568 looper letters, 118 selfloop transitions, 46 changer transitions 33/204 dead transitions. [2023-08-30 10:24:52,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 204 transitions, 1728 flow [2023-08-30 10:24:52,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 10:24:52,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 10:24:52,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2379 transitions. [2023-08-30 10:24:52,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3807618437900128 [2023-08-30 10:24:52,037 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2379 transitions. [2023-08-30 10:24:52,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2379 transitions. [2023-08-30 10:24:52,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:52,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2379 transitions. [2023-08-30 10:24:52,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 216.27272727272728) internal successors, (2379), 11 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:52,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 568.0) internal successors, (6816), 12 states have internal predecessors, (6816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:52,048 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 568.0) internal successors, (6816), 12 states have internal predecessors, (6816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:52,049 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 720 flow. Second operand 11 states and 2379 transitions. [2023-08-30 10:24:52,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 204 transitions, 1728 flow [2023-08-30 10:24:52,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 204 transitions, 1674 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 10:24:52,089 INFO L231 Difference]: Finished difference. Result has 102 places, 104 transitions, 1104 flow [2023-08-30 10:24:52,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1104, PETRI_PLACES=102, PETRI_TRANSITIONS=104} [2023-08-30 10:24:52,090 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 18 predicate places. [2023-08-30 10:24:52,090 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 104 transitions, 1104 flow [2023-08-30 10:24:52,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 204.4) internal successors, (3066), 15 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:52,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:52,091 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:24:52,097 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 10:24:52,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:24:52,296 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:24:52,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:52,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1117585619, now seen corresponding path program 1 times [2023-08-30 10:24:52,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:52,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910175256] [2023-08-30 10:24:52,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:52,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:52,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:24:52,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:52,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910175256] [2023-08-30 10:24:52,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910175256] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:24:52,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483356202] [2023-08-30 10:24:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:52,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:24:52,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:24:52,534 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 10:24:52,536 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 10:24:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:52,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 10:24:52,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:24:53,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:53,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:53,208 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-30 10:24:53,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-30 10:24:53,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:53,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:53,296 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-30 10:24:53,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-30 10:24:53,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:53,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-30 10:24:53,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:53,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-30 10:24:54,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 35 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 231 [2023-08-30 10:24:55,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:24:55,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:24:55,097 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_463 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_463) |c_~#B~0.base|) |c_~#B~0.offset|)))) is different from false [2023-08-30 10:24:55,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-30 10:24:55,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483356202] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:24:55,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:24:55,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-08-30 10:24:55,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435669848] [2023-08-30 10:24:55,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:24:55,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 10:24:55,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:55,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 10:24:55,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=109, Unknown=1, NotChecked=22, Total=182 [2023-08-30 10:24:55,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 568 [2023-08-30 10:24:55,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 104 transitions, 1104 flow. Second operand has 14 states, 14 states have (on average 205.0) internal successors, (2870), 14 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:55,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:55,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 568 [2023-08-30 10:24:55,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:56,131 INFO L130 PetriNetUnfolder]: 2145/4144 cut-off events. [2023-08-30 10:24:56,132 INFO L131 PetriNetUnfolder]: For 22089/22092 co-relation queries the response was YES. [2023-08-30 10:24:56,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17633 conditions, 4144 events. 2145/4144 cut-off events. For 22089/22092 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 29293 event pairs, 447 based on Foata normal form. 90/4179 useless extension candidates. Maximal degree in co-relation 17606. Up to 1775 conditions per place. [2023-08-30 10:24:56,154 INFO L137 encePairwiseOnDemand]: 551/568 looper letters, 185 selfloop transitions, 115 changer transitions 18/325 dead transitions. [2023-08-30 10:24:56,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 325 transitions, 3476 flow [2023-08-30 10:24:56,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 10:24:56,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 10:24:56,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3447 transitions. [2023-08-30 10:24:56,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3792913732394366 [2023-08-30 10:24:56,161 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3447 transitions. [2023-08-30 10:24:56,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3447 transitions. [2023-08-30 10:24:56,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:56,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3447 transitions. [2023-08-30 10:24:56,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 215.4375) internal successors, (3447), 16 states have internal predecessors, (3447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:56,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 568.0) internal successors, (9656), 17 states have internal predecessors, (9656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:56,179 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 568.0) internal successors, (9656), 17 states have internal predecessors, (9656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:56,179 INFO L175 Difference]: Start difference. First operand has 102 places, 104 transitions, 1104 flow. Second operand 16 states and 3447 transitions. [2023-08-30 10:24:56,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 325 transitions, 3476 flow [2023-08-30 10:24:56,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 325 transitions, 3357 flow, removed 45 selfloop flow, removed 3 redundant places. [2023-08-30 10:24:56,250 INFO L231 Difference]: Finished difference. Result has 121 places, 190 transitions, 2539 flow [2023-08-30 10:24:56,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2539, PETRI_PLACES=121, PETRI_TRANSITIONS=190} [2023-08-30 10:24:56,251 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 37 predicate places. [2023-08-30 10:24:56,251 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 190 transitions, 2539 flow [2023-08-30 10:24:56,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 205.0) internal successors, (2870), 14 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:56,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:56,252 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:24:56,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 10:24:56,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:24:56,457 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:24:56,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:56,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1561012527, now seen corresponding path program 1 times [2023-08-30 10:24:56,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:56,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531692122] [2023-08-30 10:24:56,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:56,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:56,625 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 10:24:56,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:56,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531692122] [2023-08-30 10:24:56,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531692122] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:24:56,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:24:56,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:24:56,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257018718] [2023-08-30 10:24:56,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:24:56,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:24:56,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:56,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:24:56,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:24:56,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 568 [2023-08-30 10:24:56,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 190 transitions, 2539 flow. Second operand has 4 states, 4 states have (on average 231.75) internal successors, (927), 4 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 10:24:56,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:56,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 568 [2023-08-30 10:24:56,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:57,050 INFO L130 PetriNetUnfolder]: 384/1093 cut-off events. [2023-08-30 10:24:57,050 INFO L131 PetriNetUnfolder]: For 7660/7660 co-relation queries the response was YES. [2023-08-30 10:24:57,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5075 conditions, 1093 events. 384/1093 cut-off events. For 7660/7660 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7072 event pairs, 43 based on Foata normal form. 142/1207 useless extension candidates. Maximal degree in co-relation 5038. Up to 450 conditions per place. [2023-08-30 10:24:57,057 INFO L137 encePairwiseOnDemand]: 554/568 looper letters, 101 selfloop transitions, 30 changer transitions 31/168 dead transitions. [2023-08-30 10:24:57,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 168 transitions, 2175 flow [2023-08-30 10:24:57,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:24:57,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:24:57,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1229 transitions. [2023-08-30 10:24:57,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327464788732394 [2023-08-30 10:24:57,062 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1229 transitions. [2023-08-30 10:24:57,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1229 transitions. [2023-08-30 10:24:57,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:57,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1229 transitions. [2023-08-30 10:24:57,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 245.8) internal successors, (1229), 5 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:57,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 568.0) internal successors, (3408), 6 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:57,068 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 568.0) internal successors, (3408), 6 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:57,068 INFO L175 Difference]: Start difference. First operand has 121 places, 190 transitions, 2539 flow. Second operand 5 states and 1229 transitions. [2023-08-30 10:24:57,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 168 transitions, 2175 flow [2023-08-30 10:24:57,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 168 transitions, 1867 flow, removed 94 selfloop flow, removed 16 redundant places. [2023-08-30 10:24:57,092 INFO L231 Difference]: Finished difference. Result has 99 places, 89 transitions, 750 flow [2023-08-30 10:24:57,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=750, PETRI_PLACES=99, PETRI_TRANSITIONS=89} [2023-08-30 10:24:57,092 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 15 predicate places. [2023-08-30 10:24:57,093 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 89 transitions, 750 flow [2023-08-30 10:24:57,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 231.75) internal successors, (927), 4 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 10:24:57,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:57,093 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:24:57,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 10:24:57,094 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:24:57,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:57,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1246392792, now seen corresponding path program 2 times [2023-08-30 10:24:57,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:57,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019923897] [2023-08-30 10:24:57,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:57,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:57,307 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 10:24:57,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:57,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019923897] [2023-08-30 10:24:57,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019923897] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:24:57,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3019748] [2023-08-30 10:24:57,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:24:57,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:24:57,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:24:57,313 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 10:24:57,316 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 10:24:57,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:24:57,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:24:57,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 10:24:57,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:24:57,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:57,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:57,881 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-30 10:24:57,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-30 10:24:58,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:58,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:58,068 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-30 10:24:58,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-30 10:24:58,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:58,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-30 10:24:58,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:58,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-30 10:25:00,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 35 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 231 [2023-08-30 10:25:01,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:01,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-30 10:25:01,891 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 10:25:01,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:25:01,918 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_543 Int) (v_ArrVal_544 (Array Int Int))) (or (< v_ArrVal_543 (+ |c_t_funThread2of2ForFork0_#t~post7#1| 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#B~0.base| (store (select |c_#memory_int| |c_~#B~0.base|) |c_~#B~0.offset| v_ArrVal_543)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_544) |c_~#B~0.base|) |c_~#B~0.offset|) 2147483648)))) is different from false [2023-08-30 10:25:01,926 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_543 Int) (v_ArrVal_544 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_~#B~0.base|))) (or (< v_ArrVal_543 (+ (select .cse0 |c_~#B~0.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#B~0.base| (store .cse0 |c_~#B~0.offset| v_ArrVal_543)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_544) |c_~#B~0.base|) |c_~#B~0.offset|) 2147483648))))) is different from false [2023-08-30 10:25:01,970 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_543 Int) (v_ArrVal_541 (Array Int Int)) (v_ArrVal_544 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_541))) (let ((.cse0 (select .cse1 |c_~#B~0.base|))) (or (< v_ArrVal_543 (+ (select .cse0 |c_~#B~0.offset|) 1)) (< 0 (+ 2147483648 (select (select (store (store .cse1 |c_~#B~0.base| (store .cse0 |c_~#B~0.offset| v_ArrVal_543)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_544) |c_~#B~0.base|) |c_~#B~0.offset|))))))) is different from false [2023-08-30 10:25:01,996 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2023-08-30 10:25:01,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3019748] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:25:01,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:25:01,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5] total 13 [2023-08-30 10:25:01,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056906703] [2023-08-30 10:25:01,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:25:01,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 10:25:01,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:25:01,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 10:25:01,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=93, Unknown=3, NotChecked=66, Total=210 [2023-08-30 10:25:02,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 568 [2023-08-30 10:25:02,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 89 transitions, 750 flow. Second operand has 15 states, 15 states have (on average 204.93333333333334) internal successors, (3074), 15 states have internal predecessors, (3074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:02,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:25:02,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 568 [2023-08-30 10:25:02,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:25:02,651 INFO L130 PetriNetUnfolder]: 330/984 cut-off events. [2023-08-30 10:25:02,651 INFO L131 PetriNetUnfolder]: For 5125/5134 co-relation queries the response was YES. [2023-08-30 10:25:02,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4311 conditions, 984 events. 330/984 cut-off events. For 5125/5134 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6369 event pairs, 160 based on Foata normal form. 3/956 useless extension candidates. Maximal degree in co-relation 4287. Up to 422 conditions per place. [2023-08-30 10:25:02,654 INFO L137 encePairwiseOnDemand]: 555/568 looper letters, 73 selfloop transitions, 19 changer transitions 21/121 dead transitions. [2023-08-30 10:25:02,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 121 transitions, 1161 flow [2023-08-30 10:25:02,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 10:25:02,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 10:25:02,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1687 transitions. [2023-08-30 10:25:02,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37125880281690143 [2023-08-30 10:25:02,656 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1687 transitions. [2023-08-30 10:25:02,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1687 transitions. [2023-08-30 10:25:02,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:25:02,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1687 transitions. [2023-08-30 10:25:02,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 210.875) internal successors, (1687), 8 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:02,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 568.0) internal successors, (5112), 9 states have internal predecessors, (5112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:02,662 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 568.0) internal successors, (5112), 9 states have internal predecessors, (5112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:02,662 INFO L175 Difference]: Start difference. First operand has 99 places, 89 transitions, 750 flow. Second operand 8 states and 1687 transitions. [2023-08-30 10:25:02,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 121 transitions, 1161 flow [2023-08-30 10:25:02,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 121 transitions, 1148 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 10:25:02,673 INFO L231 Difference]: Finished difference. Result has 106 places, 81 transitions, 741 flow [2023-08-30 10:25:02,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=741, PETRI_PLACES=106, PETRI_TRANSITIONS=81} [2023-08-30 10:25:02,674 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 22 predicate places. [2023-08-30 10:25:02,674 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 81 transitions, 741 flow [2023-08-30 10:25:02,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 204.93333333333334) internal successors, (3074), 15 states have internal predecessors, (3074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:02,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:25:02,675 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:25:02,681 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 10:25:02,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:25:02,880 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:25:02,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:25:02,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1367066899, now seen corresponding path program 1 times [2023-08-30 10:25:02,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:25:02,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913393819] [2023-08-30 10:25:02,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:25:02,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:25:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:25:02,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:25:02,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:25:02,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913393819] [2023-08-30 10:25:02,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913393819] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:25:02,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:25:02,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:25:02,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750077869] [2023-08-30 10:25:02,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:25:02,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:25:02,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:25:02,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:25:02,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:25:03,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 568 [2023-08-30 10:25:03,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 81 transitions, 741 flow. Second operand has 4 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:03,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:25:03,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 568 [2023-08-30 10:25:03,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:25:03,190 INFO L130 PetriNetUnfolder]: 242/727 cut-off events. [2023-08-30 10:25:03,191 INFO L131 PetriNetUnfolder]: For 4447/4476 co-relation queries the response was YES. [2023-08-30 10:25:03,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3359 conditions, 727 events. 242/727 cut-off events. For 4447/4476 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4333 event pairs, 132 based on Foata normal form. 6/730 useless extension candidates. Maximal degree in co-relation 3333. Up to 425 conditions per place. [2023-08-30 10:25:03,195 INFO L137 encePairwiseOnDemand]: 558/568 looper letters, 74 selfloop transitions, 22 changer transitions 2/106 dead transitions. [2023-08-30 10:25:03,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 106 transitions, 1098 flow [2023-08-30 10:25:03,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:25:03,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:25:03,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1263 transitions. [2023-08-30 10:25:03,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471830985915495 [2023-08-30 10:25:03,197 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1263 transitions. [2023-08-30 10:25:03,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1263 transitions. [2023-08-30 10:25:03,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:25:03,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1263 transitions. [2023-08-30 10:25:03,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 252.6) internal successors, (1263), 5 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:03,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 568.0) internal successors, (3408), 6 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:03,202 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 568.0) internal successors, (3408), 6 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:03,202 INFO L175 Difference]: Start difference. First operand has 106 places, 81 transitions, 741 flow. Second operand 5 states and 1263 transitions. [2023-08-30 10:25:03,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 106 transitions, 1098 flow [2023-08-30 10:25:03,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 106 transitions, 1073 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-30 10:25:03,213 INFO L231 Difference]: Finished difference. Result has 103 places, 84 transitions, 850 flow [2023-08-30 10:25:03,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=850, PETRI_PLACES=103, PETRI_TRANSITIONS=84} [2023-08-30 10:25:03,213 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 19 predicate places. [2023-08-30 10:25:03,214 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 84 transitions, 850 flow [2023-08-30 10:25:03,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:03,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:25:03,214 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:25:03,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 10:25:03,214 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:25:03,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:25:03,215 INFO L85 PathProgramCache]: Analyzing trace with hash 497220308, now seen corresponding path program 1 times [2023-08-30 10:25:03,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:25:03,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538487367] [2023-08-30 10:25:03,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:25:03,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:25:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:25:03,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:25:03,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:25:03,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538487367] [2023-08-30 10:25:03,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538487367] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:25:03,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744292631] [2023-08-30 10:25:03,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:25:03,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:25:03,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:25:03,524 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 10:25:03,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 10:25:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:25:03,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 10:25:03,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:25:03,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:03,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:03,994 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-30 10:25:03,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-30 10:25:04,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:04,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:04,022 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-30 10:25:04,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-30 10:25:04,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:25:04,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-30 10:25:04,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:25:04,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:25:04,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:25:04,454 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_649 (Array Int Int)) (v_ArrVal_647 Int)) (or (<= (select (select (store (store |c_#memory_int| |c_~#B~0.base| (store (select |c_#memory_int| |c_~#B~0.base|) |c_~#B~0.offset| v_ArrVal_647)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_649) |c_~#B~0.base|) |c_~#B~0.offset|) 2147483646) (< |c_t_funThread1of2ForFork0_#t~post10#1| (+ v_ArrVal_647 1)))) is different from false [2023-08-30 10:25:04,462 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_649 (Array Int Int)) (v_ArrVal_647 Int)) (let ((.cse0 (select |c_#memory_int| |c_~#B~0.base|))) (or (< (select .cse0 |c_~#B~0.offset|) (+ v_ArrVal_647 1)) (<= (select (select (store (store |c_#memory_int| |c_~#B~0.base| (store .cse0 |c_~#B~0.offset| v_ArrVal_647)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_649) |c_~#B~0.base|) |c_~#B~0.offset|) 2147483646)))) is different from false [2023-08-30 10:25:04,480 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:25:04,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2023-08-30 10:25:04,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-08-30 10:25:04,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-08-30 10:25:04,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:25:04,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744292631] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:25:04,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:25:04,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 18 [2023-08-30 10:25:04,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646210836] [2023-08-30 10:25:04,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:25:04,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 10:25:04,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:25:04,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 10:25:04,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=250, Unknown=2, NotChecked=66, Total=380 [2023-08-30 10:25:04,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 568 [2023-08-30 10:25:04,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 84 transitions, 850 flow. Second operand has 20 states, 20 states have (on average 193.75) internal successors, (3875), 20 states have internal predecessors, (3875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:04,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:25:04,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 568 [2023-08-30 10:25:04,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:25:09,289 INFO L130 PetriNetUnfolder]: 234/703 cut-off events. [2023-08-30 10:25:09,290 INFO L131 PetriNetUnfolder]: For 4916/4928 co-relation queries the response was YES. [2023-08-30 10:25:09,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3392 conditions, 703 events. 234/703 cut-off events. For 4916/4928 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4058 event pairs, 28 based on Foata normal form. 12/715 useless extension candidates. Maximal degree in co-relation 3364. Up to 190 conditions per place. [2023-08-30 10:25:09,293 INFO L137 encePairwiseOnDemand]: 557/568 looper letters, 103 selfloop transitions, 49 changer transitions 6/166 dead transitions. [2023-08-30 10:25:09,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 166 transitions, 1856 flow [2023-08-30 10:25:09,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 10:25:09,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 10:25:09,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3155 transitions. [2023-08-30 10:25:09,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34716109154929575 [2023-08-30 10:25:09,297 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3155 transitions. [2023-08-30 10:25:09,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3155 transitions. [2023-08-30 10:25:09,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:25:09,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3155 transitions. [2023-08-30 10:25:09,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 197.1875) internal successors, (3155), 16 states have internal predecessors, (3155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:09,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 568.0) internal successors, (9656), 17 states have internal predecessors, (9656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:09,309 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 568.0) internal successors, (9656), 17 states have internal predecessors, (9656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:09,309 INFO L175 Difference]: Start difference. First operand has 103 places, 84 transitions, 850 flow. Second operand 16 states and 3155 transitions. [2023-08-30 10:25:09,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 166 transitions, 1856 flow [2023-08-30 10:25:09,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 166 transitions, 1827 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 10:25:09,323 INFO L231 Difference]: Finished difference. Result has 113 places, 107 transitions, 1180 flow [2023-08-30 10:25:09,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1180, PETRI_PLACES=113, PETRI_TRANSITIONS=107} [2023-08-30 10:25:09,324 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 29 predicate places. [2023-08-30 10:25:09,324 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 107 transitions, 1180 flow [2023-08-30 10:25:09,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 193.75) internal successors, (3875), 20 states have internal predecessors, (3875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:09,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:25:09,325 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:25:09,342 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 10:25:09,529 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,SelfDestructingSolverStorable24 [2023-08-30 10:25:09,530 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:25:09,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:25:09,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1968927267, now seen corresponding path program 2 times [2023-08-30 10:25:09,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:25:09,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586821005] [2023-08-30 10:25:09,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:25:09,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:25:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:25:09,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:25:09,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:25:09,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586821005] [2023-08-30 10:25:09,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586821005] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:25:09,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781103543] [2023-08-30 10:25:09,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:25:09,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:25:09,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:25:09,789 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 10:25:09,814 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 10:25:09,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:25:09,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:25:09,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 10:25:09,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:25:10,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:10,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:10,245 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-30 10:25:10,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-30 10:25:10,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:10,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:10,271 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-30 10:25:10,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-30 10:25:10,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:25:10,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-08-30 10:25:10,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:25:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:25:10,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:25:10,658 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_722 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_722) |c_~#B~0.base|) |c_~#B~0.offset|)))) is different from false [2023-08-30 10:25:10,671 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_722 (Array Int Int)) (v_ArrVal_721 Int)) (or (< 0 (+ 2147483650 (select (select (store (store |c_#memory_int| |c_~#B~0.base| (store (select |c_#memory_int| |c_~#B~0.base|) |c_~#B~0.offset| v_ArrVal_721)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_722) |c_~#B~0.base|) |c_~#B~0.offset|))) (< (+ v_ArrVal_721 1) |c_t_funThread1of2ForFork0_#t~post10#1|))) is different from false [2023-08-30 10:25:10,682 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_722 (Array Int Int)) (v_ArrVal_721 Int)) (let ((.cse0 (select |c_#memory_int| |c_~#B~0.base|))) (or (< 0 (+ 2147483650 (select (select (store (store |c_#memory_int| |c_~#B~0.base| (store .cse0 |c_~#B~0.offset| v_ArrVal_721)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_722) |c_~#B~0.base|) |c_~#B~0.offset|))) (< (+ v_ArrVal_721 1) (select .cse0 |c_~#B~0.offset|))))) is different from false [2023-08-30 10:25:10,703 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:25:10,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2023-08-30 10:25:10,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-08-30 10:25:10,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-08-30 10:25:10,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 10:25:10,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781103543] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:25:10,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:25:10,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 17 [2023-08-30 10:25:10,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128873102] [2023-08-30 10:25:10,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:25:10,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 10:25:10,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:25:10,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 10:25:10,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=184, Unknown=3, NotChecked=90, Total=342 [2023-08-30 10:25:10,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 568 [2023-08-30 10:25:10,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 107 transitions, 1180 flow. Second operand has 19 states, 19 states have (on average 194.1578947368421) internal successors, (3689), 19 states have internal predecessors, (3689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:10,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:25:10,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 568 [2023-08-30 10:25:10,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:25:13,346 INFO L130 PetriNetUnfolder]: 274/805 cut-off events. [2023-08-30 10:25:13,346 INFO L131 PetriNetUnfolder]: For 5877/5879 co-relation queries the response was YES. [2023-08-30 10:25:13,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3992 conditions, 805 events. 274/805 cut-off events. For 5877/5879 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4858 event pairs, 60 based on Foata normal form. 14/819 useless extension candidates. Maximal degree in co-relation 3963. Up to 271 conditions per place. [2023-08-30 10:25:13,350 INFO L137 encePairwiseOnDemand]: 557/568 looper letters, 116 selfloop transitions, 45 changer transitions 2/171 dead transitions. [2023-08-30 10:25:13,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 171 transitions, 1980 flow [2023-08-30 10:25:13,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 10:25:13,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 10:25:13,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2771 transitions. [2023-08-30 10:25:13,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34846579476861167 [2023-08-30 10:25:13,353 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2771 transitions. [2023-08-30 10:25:13,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2771 transitions. [2023-08-30 10:25:13,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:25:13,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2771 transitions. [2023-08-30 10:25:13,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 197.92857142857142) internal successors, (2771), 14 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:13,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 568.0) internal successors, (8520), 15 states have internal predecessors, (8520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:13,360 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 568.0) internal successors, (8520), 15 states have internal predecessors, (8520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:13,361 INFO L175 Difference]: Start difference. First operand has 113 places, 107 transitions, 1180 flow. Second operand 14 states and 2771 transitions. [2023-08-30 10:25:13,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 171 transitions, 1980 flow [2023-08-30 10:25:13,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 171 transitions, 1956 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 10:25:13,376 INFO L231 Difference]: Finished difference. Result has 125 places, 112 transitions, 1350 flow [2023-08-30 10:25:13,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1350, PETRI_PLACES=125, PETRI_TRANSITIONS=112} [2023-08-30 10:25:13,377 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 41 predicate places. [2023-08-30 10:25:13,377 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 112 transitions, 1350 flow [2023-08-30 10:25:13,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 194.1578947368421) internal successors, (3689), 19 states have internal predecessors, (3689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:13,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:25:13,378 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:25:13,386 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 10:25:13,586 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,SelfDestructingSolverStorable25 [2023-08-30 10:25:13,586 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:25:13,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:25:13,586 INFO L85 PathProgramCache]: Analyzing trace with hash -124567167, now seen corresponding path program 1 times [2023-08-30 10:25:13,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:25:13,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501502547] [2023-08-30 10:25:13,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:25:13,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:25:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:25:13,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:25:13,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:25:13,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501502547] [2023-08-30 10:25:13,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501502547] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:25:13,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:25:13,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:25:13,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864104456] [2023-08-30 10:25:13,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:25:13,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:25:13,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:25:13,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:25:13,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:25:13,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 568 [2023-08-30 10:25:13,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 112 transitions, 1350 flow. Second operand has 4 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:13,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:25:13,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 568 [2023-08-30 10:25:13,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:25:13,934 INFO L130 PetriNetUnfolder]: 270/800 cut-off events. [2023-08-30 10:25:13,934 INFO L131 PetriNetUnfolder]: For 6655/6670 co-relation queries the response was YES. [2023-08-30 10:25:13,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4208 conditions, 800 events. 270/800 cut-off events. For 6655/6670 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4908 event pairs, 126 based on Foata normal form. 6/804 useless extension candidates. Maximal degree in co-relation 4176. Up to 513 conditions per place. [2023-08-30 10:25:13,939 INFO L137 encePairwiseOnDemand]: 557/568 looper letters, 87 selfloop transitions, 36 changer transitions 0/131 dead transitions. [2023-08-30 10:25:13,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 131 transitions, 1749 flow [2023-08-30 10:25:13,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:25:13,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:25:13,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1254 transitions. [2023-08-30 10:25:13,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4415492957746479 [2023-08-30 10:25:13,942 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1254 transitions. [2023-08-30 10:25:13,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1254 transitions. [2023-08-30 10:25:13,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:25:13,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1254 transitions. [2023-08-30 10:25:13,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 250.8) internal successors, (1254), 5 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:13,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 568.0) internal successors, (3408), 6 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:13,946 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 568.0) internal successors, (3408), 6 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:13,946 INFO L175 Difference]: Start difference. First operand has 125 places, 112 transitions, 1350 flow. Second operand 5 states and 1254 transitions. [2023-08-30 10:25:13,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 131 transitions, 1749 flow [2023-08-30 10:25:13,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 131 transitions, 1659 flow, removed 6 selfloop flow, removed 9 redundant places. [2023-08-30 10:25:13,963 INFO L231 Difference]: Finished difference. Result has 122 places, 116 transitions, 1458 flow [2023-08-30 10:25:13,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1458, PETRI_PLACES=122, PETRI_TRANSITIONS=116} [2023-08-30 10:25:13,964 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 38 predicate places. [2023-08-30 10:25:13,964 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 116 transitions, 1458 flow [2023-08-30 10:25:13,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:13,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:25:13,965 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:25:13,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-30 10:25:13,965 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:25:13,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:25:13,965 INFO L85 PathProgramCache]: Analyzing trace with hash -124567124, now seen corresponding path program 1 times [2023-08-30 10:25:13,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:25:13,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385789191] [2023-08-30 10:25:13,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:25:13,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:25:13,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:25:14,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:25:14,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:25:14,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385789191] [2023-08-30 10:25:14,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385789191] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:25:14,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:25:14,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:25:14,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867562504] [2023-08-30 10:25:14,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:25:14,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:25:14,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:25:14,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:25:14,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:25:14,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 568 [2023-08-30 10:25:14,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 116 transitions, 1458 flow. Second operand has 5 states, 5 states have (on average 245.8) internal successors, (1229), 5 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:14,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:25:14,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 568 [2023-08-30 10:25:14,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:25:14,372 INFO L130 PetriNetUnfolder]: 270/806 cut-off events. [2023-08-30 10:25:14,373 INFO L131 PetriNetUnfolder]: For 7349/7360 co-relation queries the response was YES. [2023-08-30 10:25:14,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4243 conditions, 806 events. 270/806 cut-off events. For 7349/7360 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4935 event pairs, 128 based on Foata normal form. 6/810 useless extension candidates. Maximal degree in co-relation 4212. Up to 502 conditions per place. [2023-08-30 10:25:14,378 INFO L137 encePairwiseOnDemand]: 556/568 looper letters, 87 selfloop transitions, 45 changer transitions 0/140 dead transitions. [2023-08-30 10:25:14,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 140 transitions, 1888 flow [2023-08-30 10:25:14,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:25:14,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:25:14,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1752 transitions. [2023-08-30 10:25:14,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44064386317907445 [2023-08-30 10:25:14,380 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1752 transitions. [2023-08-30 10:25:14,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1752 transitions. [2023-08-30 10:25:14,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:25:14,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1752 transitions. [2023-08-30 10:25:14,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 250.28571428571428) internal successors, (1752), 7 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:14,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 568.0) internal successors, (4544), 8 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:14,386 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 568.0) internal successors, (4544), 8 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:14,386 INFO L175 Difference]: Start difference. First operand has 122 places, 116 transitions, 1458 flow. Second operand 7 states and 1752 transitions. [2023-08-30 10:25:14,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 140 transitions, 1888 flow [2023-08-30 10:25:14,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 140 transitions, 1858 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 10:25:14,400 INFO L231 Difference]: Finished difference. Result has 130 places, 119 transitions, 1612 flow [2023-08-30 10:25:14,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=1403, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1612, PETRI_PLACES=130, PETRI_TRANSITIONS=119} [2023-08-30 10:25:14,401 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 46 predicate places. [2023-08-30 10:25:14,401 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 119 transitions, 1612 flow [2023-08-30 10:25:14,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 245.8) internal successors, (1229), 5 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:14,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:25:14,401 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:25:14,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-30 10:25:14,402 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:25:14,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:25:14,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1211097584, now seen corresponding path program 2 times [2023-08-30 10:25:14,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:25:14,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326549278] [2023-08-30 10:25:14,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:25:14,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:25:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:25:14,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:25:14,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:25:14,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326549278] [2023-08-30 10:25:14,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326549278] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:25:14,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170698815] [2023-08-30 10:25:14,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:25:14,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:25:14,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:25:14,673 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 10:25:14,700 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 10:25:14,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:25:14,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:25:14,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 10:25:14,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:25:15,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:15,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:15,095 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-30 10:25:15,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-30 10:25:15,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:15,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:15,128 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-30 10:25:15,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-30 10:25:15,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:25:15,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-08-30 10:25:15,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:25:15,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 10:25:15,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:25:15,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170698815] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:25:15,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:25:15,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-30 10:25:15,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978905385] [2023-08-30 10:25:15,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:25:15,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:25:15,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:25:15,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:25:15,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:25:15,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 568 [2023-08-30 10:25:15,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 119 transitions, 1612 flow. Second operand has 7 states, 7 states have (on average 244.85714285714286) internal successors, (1714), 7 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:15,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:25:15,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 568 [2023-08-30 10:25:15,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:25:15,946 INFO L130 PetriNetUnfolder]: 270/806 cut-off events. [2023-08-30 10:25:15,946 INFO L131 PetriNetUnfolder]: For 8280/8312 co-relation queries the response was YES. [2023-08-30 10:25:15,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4375 conditions, 806 events. 270/806 cut-off events. For 8280/8312 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4922 event pairs, 134 based on Foata normal form. 3/807 useless extension candidates. Maximal degree in co-relation 4341. Up to 363 conditions per place. [2023-08-30 10:25:15,952 INFO L137 encePairwiseOnDemand]: 558/568 looper letters, 88 selfloop transitions, 37 changer transitions 2/135 dead transitions. [2023-08-30 10:25:15,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 135 transitions, 1971 flow [2023-08-30 10:25:15,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:25:15,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:25:15,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1498 transitions. [2023-08-30 10:25:15,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4395539906103286 [2023-08-30 10:25:15,954 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1498 transitions. [2023-08-30 10:25:15,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1498 transitions. [2023-08-30 10:25:15,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:25:15,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1498 transitions. [2023-08-30 10:25:15,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 249.66666666666666) internal successors, (1498), 6 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:15,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 568.0) internal successors, (3976), 7 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:15,958 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 568.0) internal successors, (3976), 7 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:15,958 INFO L175 Difference]: Start difference. First operand has 130 places, 119 transitions, 1612 flow. Second operand 6 states and 1498 transitions. [2023-08-30 10:25:15,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 135 transitions, 1971 flow [2023-08-30 10:25:15,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 135 transitions, 1878 flow, removed 40 selfloop flow, removed 2 redundant places. [2023-08-30 10:25:15,977 INFO L231 Difference]: Finished difference. Result has 132 places, 118 transitions, 1576 flow [2023-08-30 10:25:15,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1576, PETRI_PLACES=132, PETRI_TRANSITIONS=118} [2023-08-30 10:25:15,977 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 48 predicate places. [2023-08-30 10:25:15,978 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 118 transitions, 1576 flow [2023-08-30 10:25:15,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 244.85714285714286) internal successors, (1714), 7 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:15,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:25:15,978 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:25:15,985 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 10:25:16,182 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,SelfDestructingSolverStorable28 [2023-08-30 10:25:16,183 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:25:16,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:25:16,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1211097541, now seen corresponding path program 2 times [2023-08-30 10:25:16,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:25:16,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960482580] [2023-08-30 10:25:16,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:25:16,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:25:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:25:16,483 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:25:16,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:25:16,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960482580] [2023-08-30 10:25:16,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960482580] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:25:16,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72076756] [2023-08-30 10:25:16,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:25:16,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:25:16,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:25:16,485 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 10:25:16,511 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 10:25:16,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:25:16,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:25:16,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 10:25:16,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:25:16,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:16,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:16,885 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-30 10:25:16,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-30 10:25:16,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:16,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:16,921 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-30 10:25:16,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-30 10:25:17,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:25:17,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-30 10:25:17,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:25:17,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 10:25:17,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:25:17,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72076756] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:25:17,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:25:17,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2023-08-30 10:25:17,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804819677] [2023-08-30 10:25:17,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:25:17,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:25:17,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:25:17,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:25:17,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-08-30 10:25:17,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 568 [2023-08-30 10:25:17,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 118 transitions, 1576 flow. Second operand has 7 states, 7 states have (on average 243.85714285714286) internal successors, (1707), 7 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:17,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:25:17,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 568 [2023-08-30 10:25:17,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:25:17,850 INFO L130 PetriNetUnfolder]: 270/801 cut-off events. [2023-08-30 10:25:17,850 INFO L131 PetriNetUnfolder]: For 7361/7396 co-relation queries the response was YES. [2023-08-30 10:25:17,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4198 conditions, 801 events. 270/801 cut-off events. For 7361/7396 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4882 event pairs, 134 based on Foata normal form. 6/805 useless extension candidates. Maximal degree in co-relation 4164. Up to 372 conditions per place. [2023-08-30 10:25:17,853 INFO L137 encePairwiseOnDemand]: 560/568 looper letters, 91 selfloop transitions, 30 changer transitions 3/132 dead transitions. [2023-08-30 10:25:17,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 132 transitions, 1894 flow [2023-08-30 10:25:17,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:25:17,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:25:17,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1732 transitions. [2023-08-30 10:25:17,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43561368209255535 [2023-08-30 10:25:17,863 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1732 transitions. [2023-08-30 10:25:17,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1732 transitions. [2023-08-30 10:25:17,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:25:17,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1732 transitions. [2023-08-30 10:25:17,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 247.42857142857142) internal successors, (1732), 7 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:17,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 568.0) internal successors, (4544), 8 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:17,868 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 568.0) internal successors, (4544), 8 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:17,869 INFO L175 Difference]: Start difference. First operand has 132 places, 118 transitions, 1576 flow. Second operand 7 states and 1732 transitions. [2023-08-30 10:25:17,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 132 transitions, 1894 flow [2023-08-30 10:25:17,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 132 transitions, 1764 flow, removed 11 selfloop flow, removed 8 redundant places. [2023-08-30 10:25:17,885 INFO L231 Difference]: Finished difference. Result has 128 places, 116 transitions, 1460 flow [2023-08-30 10:25:17,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1460, PETRI_PLACES=128, PETRI_TRANSITIONS=116} [2023-08-30 10:25:17,886 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 44 predicate places. [2023-08-30 10:25:17,886 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 116 transitions, 1460 flow [2023-08-30 10:25:17,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 243.85714285714286) internal successors, (1707), 7 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:17,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:25:17,887 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:25:17,895 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 10:25:18,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:25:18,090 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:25:18,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:25:18,090 INFO L85 PathProgramCache]: Analyzing trace with hash 390899596, now seen corresponding path program 1 times [2023-08-30 10:25:18,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:25:18,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037985640] [2023-08-30 10:25:18,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:25:18,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:25:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:25:18,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:25:18,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:25:18,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037985640] [2023-08-30 10:25:18,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037985640] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:25:18,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:25:18,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:25:18,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280479562] [2023-08-30 10:25:18,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:25:18,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:25:18,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:25:18,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:25:18,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:25:18,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 568 [2023-08-30 10:25:18,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 116 transitions, 1460 flow. Second operand has 6 states, 6 states have (on average 240.83333333333334) internal successors, (1445), 6 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:18,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:25:18,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 568 [2023-08-30 10:25:18,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:25:18,605 INFO L130 PetriNetUnfolder]: 266/792 cut-off events. [2023-08-30 10:25:18,605 INFO L131 PetriNetUnfolder]: For 6053/6070 co-relation queries the response was YES. [2023-08-30 10:25:18,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3988 conditions, 792 events. 266/792 cut-off events. For 6053/6070 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4863 event pairs, 123 based on Foata normal form. 6/796 useless extension candidates. Maximal degree in co-relation 3955. Up to 477 conditions per place. [2023-08-30 10:25:18,608 INFO L137 encePairwiseOnDemand]: 557/568 looper letters, 79 selfloop transitions, 34 changer transitions 11/132 dead transitions. [2023-08-30 10:25:18,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 132 transitions, 1783 flow [2023-08-30 10:25:18,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 10:25:18,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 10:25:18,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2188 transitions. [2023-08-30 10:25:18,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42801251956181535 [2023-08-30 10:25:18,611 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2188 transitions. [2023-08-30 10:25:18,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2188 transitions. [2023-08-30 10:25:18,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:25:18,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2188 transitions. [2023-08-30 10:25:18,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 243.11111111111111) internal successors, (2188), 9 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:18,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 568.0) internal successors, (5680), 10 states have internal predecessors, (5680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:18,616 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 568.0) internal successors, (5680), 10 states have internal predecessors, (5680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:18,617 INFO L175 Difference]: Start difference. First operand has 128 places, 116 transitions, 1460 flow. Second operand 9 states and 2188 transitions. [2023-08-30 10:25:18,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 132 transitions, 1783 flow [2023-08-30 10:25:18,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 132 transitions, 1726 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-30 10:25:18,631 INFO L231 Difference]: Finished difference. Result has 130 places, 102 transitions, 1280 flow [2023-08-30 10:25:18,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1280, PETRI_PLACES=130, PETRI_TRANSITIONS=102} [2023-08-30 10:25:18,632 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 46 predicate places. [2023-08-30 10:25:18,632 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 102 transitions, 1280 flow [2023-08-30 10:25:18,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.83333333333334) internal successors, (1445), 6 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:18,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:25:18,633 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:25:18,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-30 10:25:18,633 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:25:18,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:25:18,634 INFO L85 PathProgramCache]: Analyzing trace with hash -470833318, now seen corresponding path program 1 times [2023-08-30 10:25:18,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:25:18,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711137287] [2023-08-30 10:25:18,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:25:18,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:25:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:25:18,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:25:18,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:25:18,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711137287] [2023-08-30 10:25:18,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711137287] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:25:18,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:25:18,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:25:18,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393301734] [2023-08-30 10:25:18,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:25:18,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:25:18,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:25:18,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:25:18,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:25:18,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 568 [2023-08-30 10:25:18,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 102 transitions, 1280 flow. Second operand has 6 states, 6 states have (on average 240.83333333333334) internal successors, (1445), 6 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:18,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:25:18,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 568 [2023-08-30 10:25:18,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:25:19,124 INFO L130 PetriNetUnfolder]: 262/785 cut-off events. [2023-08-30 10:25:19,124 INFO L131 PetriNetUnfolder]: For 6127/6140 co-relation queries the response was YES. [2023-08-30 10:25:19,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4043 conditions, 785 events. 262/785 cut-off events. For 6127/6140 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4813 event pairs, 104 based on Foata normal form. 6/789 useless extension candidates. Maximal degree in co-relation 4010. Up to 458 conditions per place. [2023-08-30 10:25:19,128 INFO L137 encePairwiseOnDemand]: 558/568 looper letters, 91 selfloop transitions, 34 changer transitions 6/139 dead transitions. [2023-08-30 10:25:19,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 139 transitions, 1837 flow [2023-08-30 10:25:19,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 10:25:19,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 10:25:19,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2194 transitions. [2023-08-30 10:25:19,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4291862284820031 [2023-08-30 10:25:19,131 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2194 transitions. [2023-08-30 10:25:19,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2194 transitions. [2023-08-30 10:25:19,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:25:19,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2194 transitions. [2023-08-30 10:25:19,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 243.77777777777777) internal successors, (2194), 9 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:19,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 568.0) internal successors, (5680), 10 states have internal predecessors, (5680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:19,138 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 568.0) internal successors, (5680), 10 states have internal predecessors, (5680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:19,138 INFO L175 Difference]: Start difference. First operand has 130 places, 102 transitions, 1280 flow. Second operand 9 states and 2194 transitions. [2023-08-30 10:25:19,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 139 transitions, 1837 flow [2023-08-30 10:25:19,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 139 transitions, 1709 flow, removed 12 selfloop flow, removed 13 redundant places. [2023-08-30 10:25:19,153 INFO L231 Difference]: Finished difference. Result has 127 places, 108 transitions, 1336 flow [2023-08-30 10:25:19,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1336, PETRI_PLACES=127, PETRI_TRANSITIONS=108} [2023-08-30 10:25:19,153 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 43 predicate places. [2023-08-30 10:25:19,154 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 108 transitions, 1336 flow [2023-08-30 10:25:19,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.83333333333334) internal successors, (1445), 6 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:19,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:25:19,154 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:25:19,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-30 10:25:19,155 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:25:19,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:25:19,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1151472696, now seen corresponding path program 2 times [2023-08-30 10:25:19,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:25:19,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101619839] [2023-08-30 10:25:19,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:25:19,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:25:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:25:19,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:25:19,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:25:19,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101619839] [2023-08-30 10:25:19,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101619839] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:25:19,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883842593] [2023-08-30 10:25:19,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:25:19,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:25:19,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:25:19,433 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 10:25:19,443 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 10:25:19,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:25:19,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:25:19,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 10:25:19,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:25:19,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:19,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:19,828 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-30 10:25:19,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-30 10:25:19,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:19,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:19,850 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-30 10:25:19,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-30 10:25:20,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:25:20,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:25:20,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-08-30 10:25:20,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:25:20,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:25:20,221 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:25:20,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2023-08-30 10:25:20,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-08-30 10:25:20,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-08-30 10:25:20,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:25:20,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883842593] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:25:20,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:25:20,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 16 [2023-08-30 10:25:20,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273463675] [2023-08-30 10:25:20,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:25:20,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 10:25:20,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:25:20,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 10:25:20,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=246, Unknown=4, NotChecked=0, Total=306 [2023-08-30 10:25:21,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 568 [2023-08-30 10:25:21,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 108 transitions, 1336 flow. Second operand has 18 states, 18 states have (on average 222.5) internal successors, (4005), 18 states have internal predecessors, (4005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:21,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:25:21,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 568 [2023-08-30 10:25:21,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:25:22,071 INFO L130 PetriNetUnfolder]: 255/748 cut-off events. [2023-08-30 10:25:22,071 INFO L131 PetriNetUnfolder]: For 5136/5138 co-relation queries the response was YES. [2023-08-30 10:25:22,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3833 conditions, 748 events. 255/748 cut-off events. For 5136/5138 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4481 event pairs, 41 based on Foata normal form. 12/760 useless extension candidates. Maximal degree in co-relation 3798. Up to 138 conditions per place. [2023-08-30 10:25:22,074 INFO L137 encePairwiseOnDemand]: 558/568 looper letters, 46 selfloop transitions, 16 changer transitions 111/180 dead transitions. [2023-08-30 10:25:22,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 180 transitions, 2122 flow [2023-08-30 10:25:22,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 10:25:22,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 10:25:22,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4486 transitions. [2023-08-30 10:25:22,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3948943661971831 [2023-08-30 10:25:22,077 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4486 transitions. [2023-08-30 10:25:22,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4486 transitions. [2023-08-30 10:25:22,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:25:22,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4486 transitions. [2023-08-30 10:25:22,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 224.3) internal successors, (4486), 20 states have internal predecessors, (4486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:22,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 568.0) internal successors, (11928), 21 states have internal predecessors, (11928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:22,091 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 568.0) internal successors, (11928), 21 states have internal predecessors, (11928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:22,091 INFO L175 Difference]: Start difference. First operand has 127 places, 108 transitions, 1336 flow. Second operand 20 states and 4486 transitions. [2023-08-30 10:25:22,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 180 transitions, 2122 flow [2023-08-30 10:25:22,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 180 transitions, 2005 flow, removed 9 selfloop flow, removed 9 redundant places. [2023-08-30 10:25:22,108 INFO L231 Difference]: Finished difference. Result has 135 places, 54 transitions, 506 flow [2023-08-30 10:25:22,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=506, PETRI_PLACES=135, PETRI_TRANSITIONS=54} [2023-08-30 10:25:22,108 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 51 predicate places. [2023-08-30 10:25:22,108 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 54 transitions, 506 flow [2023-08-30 10:25:22,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 222.5) internal successors, (4005), 18 states have internal predecessors, (4005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:22,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:25:22,109 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:25:22,115 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 10:25:22,314 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,SelfDestructingSolverStorable32 [2023-08-30 10:25:22,315 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:25:22,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:25:22,315 INFO L85 PathProgramCache]: Analyzing trace with hash 294108205, now seen corresponding path program 2 times [2023-08-30 10:25:22,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:25:22,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575536815] [2023-08-30 10:25:22,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:25:22,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:25:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:25:22,641 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 10:25:22,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:25:22,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575536815] [2023-08-30 10:25:22,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575536815] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:25:22,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954200217] [2023-08-30 10:25:22,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:25:22,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:25:22,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:25:22,644 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 10:25:22,651 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 10:25:22,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:25:22,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:25:22,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 10:25:22,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:25:23,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:23,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:23,093 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-30 10:25:23,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-30 10:25:23,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:23,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:23,192 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-30 10:25:23,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-30 10:25:23,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:23,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-30 10:25:23,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:23,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-30 10:25:24,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 35 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 231 [2023-08-30 10:25:25,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 35 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 236 [2023-08-30 10:25:27,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 35 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 236 [2023-08-30 10:25:27,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:27,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-30 10:25:27,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 10:25:27,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:25:27,877 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1192 Int) (v_ArrVal_1194 (Array Int Int))) (or (< v_ArrVal_1192 (+ |c_t_funThread1of2ForFork0_#t~post7#1| 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#B~0.base| (store (select |c_#memory_int| |c_~#B~0.base|) |c_~#B~0.offset| v_ArrVal_1192)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1194) |c_~#B~0.base|) |c_~#B~0.offset|) 2147483648)))) is different from false [2023-08-30 10:25:27,884 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1192 Int) (v_ArrVal_1194 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_~#B~0.base|))) (or (< v_ArrVal_1192 (+ (select .cse0 |c_~#B~0.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#B~0.base| (store .cse0 |c_~#B~0.offset| v_ArrVal_1192)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1194) |c_~#B~0.base|) |c_~#B~0.offset|) 2147483648))))) is different from false [2023-08-30 10:25:27,919 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1192 Int) (v_ArrVal_1194 (Array Int Int))) (or (< v_ArrVal_1192 |c_t_funThread2of2ForFork0_#t~post10#1|) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#B~0.base| (store (select |c_#memory_int| |c_~#B~0.base|) |c_~#B~0.offset| v_ArrVal_1192)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1194) |c_~#B~0.base|) |c_~#B~0.offset|) 2147483648)))) is different from false [2023-08-30 10:25:27,926 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1192 Int) (v_ArrVal_1194 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_~#B~0.base|))) (or (< v_ArrVal_1192 (select .cse0 |c_~#B~0.offset|)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#B~0.base| (store .cse0 |c_~#B~0.offset| v_ArrVal_1192)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1194) |c_~#B~0.base|) |c_~#B~0.offset|) 2147483648))))) is different from false [2023-08-30 10:25:27,956 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1192 Int) (v_ArrVal_1194 (Array Int Int))) (or (< v_ArrVal_1192 (+ |c_t_funThread2of2ForFork0_#t~post7#1| 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#B~0.base| (store (select |c_#memory_int| |c_~#B~0.base|) |c_~#B~0.offset| v_ArrVal_1192)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1194) |c_~#B~0.base|) |c_~#B~0.offset|) 2147483648)))) is different from false [2023-08-30 10:25:27,999 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1187 (Array Int Int)) (v_ArrVal_1192 Int) (v_ArrVal_1194 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1187))) (let ((.cse1 (select .cse0 |c_~#B~0.base|))) (or (< 0 (+ (select (select (store (store .cse0 |c_~#B~0.base| (store .cse1 |c_~#B~0.offset| v_ArrVal_1192)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1194) |c_~#B~0.base|) |c_~#B~0.offset|) 2147483648)) (< v_ArrVal_1192 (+ (select .cse1 |c_~#B~0.offset|) 1)))))) is different from false [2023-08-30 10:25:28,024 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2023-08-30 10:25:28,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954200217] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:25:28,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:25:28,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 22 [2023-08-30 10:25:28,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077177491] [2023-08-30 10:25:28,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:25:28,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 10:25:28,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:25:28,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 10:25:28,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=231, Unknown=7, NotChecked=222, Total=552 [2023-08-30 10:25:28,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 568 [2023-08-30 10:25:28,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 54 transitions, 506 flow. Second operand has 24 states, 24 states have (on average 193.08333333333334) internal successors, (4634), 24 states have internal predecessors, (4634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:28,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:25:28,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 568 [2023-08-30 10:25:28,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:25:28,865 INFO L130 PetriNetUnfolder]: 71/260 cut-off events. [2023-08-30 10:25:28,865 INFO L131 PetriNetUnfolder]: For 1382/1387 co-relation queries the response was YES. [2023-08-30 10:25:28,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1208 conditions, 260 events. 71/260 cut-off events. For 1382/1387 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1082 event pairs, 45 based on Foata normal form. 4/264 useless extension candidates. Maximal degree in co-relation 1176. Up to 71 conditions per place. [2023-08-30 10:25:28,866 INFO L137 encePairwiseOnDemand]: 558/568 looper letters, 0 selfloop transitions, 0 changer transitions 61/61 dead transitions. [2023-08-30 10:25:28,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 61 transitions, 648 flow [2023-08-30 10:25:28,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:25:28,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:25:28,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1938 transitions. [2023-08-30 10:25:28,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34119718309859154 [2023-08-30 10:25:28,868 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1938 transitions. [2023-08-30 10:25:28,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1938 transitions. [2023-08-30 10:25:28,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:25:28,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1938 transitions. [2023-08-30 10:25:28,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 193.8) internal successors, (1938), 10 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:28,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 568.0) internal successors, (6248), 11 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:28,873 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 568.0) internal successors, (6248), 11 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:28,873 INFO L175 Difference]: Start difference. First operand has 135 places, 54 transitions, 506 flow. Second operand 10 states and 1938 transitions. [2023-08-30 10:25:28,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 61 transitions, 648 flow [2023-08-30 10:25:28,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 61 transitions, 506 flow, removed 10 selfloop flow, removed 28 redundant places. [2023-08-30 10:25:28,876 INFO L231 Difference]: Finished difference. Result has 84 places, 0 transitions, 0 flow [2023-08-30 10:25:28,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=84, PETRI_TRANSITIONS=0} [2023-08-30 10:25:28,876 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 0 predicate places. [2023-08-30 10:25:28,876 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 0 transitions, 0 flow [2023-08-30 10:25:28,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 193.08333333333334) internal successors, (4634), 24 states have internal predecessors, (4634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:28,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 24 remaining) [2023-08-30 10:25:28,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 24 remaining) [2023-08-30 10:25:28,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 24 remaining) [2023-08-30 10:25:28,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 24 remaining) [2023-08-30 10:25:28,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 24 remaining) [2023-08-30 10:25:28,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 24 remaining) [2023-08-30 10:25:28,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 24 remaining) [2023-08-30 10:25:28,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 24 remaining) [2023-08-30 10:25:28,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 24 remaining) [2023-08-30 10:25:28,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 24 remaining) [2023-08-30 10:25:28,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 24 remaining) [2023-08-30 10:25:28,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 24 remaining) [2023-08-30 10:25:28,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 24 remaining) [2023-08-30 10:25:28,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 24 remaining) [2023-08-30 10:25:28,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 24 remaining) [2023-08-30 10:25:28,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 24 remaining) [2023-08-30 10:25:28,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 24 remaining) [2023-08-30 10:25:28,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 24 remaining) [2023-08-30 10:25:28,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 24 remaining) [2023-08-30 10:25:28,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 24 remaining) [2023-08-30 10:25:28,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 24 remaining) [2023-08-30 10:25:28,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 24 remaining) [2023-08-30 10:25:28,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 24 remaining) [2023-08-30 10:25:28,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 24 remaining) [2023-08-30 10:25:28,885 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 10:25:29,085 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,SelfDestructingSolverStorable33 [2023-08-30 10:25:29,085 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:25:29,085 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 10:25:29,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 297 transitions, 612 flow [2023-08-30 10:25:29,133 INFO L130 PetriNetUnfolder]: 72/487 cut-off events. [2023-08-30 10:25:29,133 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:25:29,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 487 events. 72/487 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1896 event pairs, 0 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 310. Up to 12 conditions per place. [2023-08-30 10:25:29,136 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 297 transitions, 612 flow [2023-08-30 10:25:29,138 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 291 transitions, 600 flow [2023-08-30 10:25:29,138 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:25:29,139 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 255 places, 291 transitions, 600 flow [2023-08-30 10:25:29,139 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 255 places, 291 transitions, 600 flow [2023-08-30 10:25:29,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 291 transitions, 600 flow [2023-08-30 10:25:29,178 INFO L130 PetriNetUnfolder]: 71/481 cut-off events. [2023-08-30 10:25:29,178 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:25:29,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 481 events. 71/481 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1893 event pairs, 0 based on Foata normal form. 0/376 useless extension candidates. Maximal degree in co-relation 304. Up to 12 conditions per place. [2023-08-30 10:25:29,190 INFO L119 LiptonReduction]: Number of co-enabled transitions 32896 [2023-08-30 10:25:36,205 INFO L134 LiptonReduction]: Checked pairs total: 86406 [2023-08-30 10:25:36,205 INFO L136 LiptonReduction]: Total number of compositions: 250 [2023-08-30 10:25:36,207 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:25:36,207 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;@57feee0f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:25:36,207 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:25:36,214 INFO L130 PetriNetUnfolder]: 33/115 cut-off events. [2023-08-30 10:25:36,214 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 10:25:36,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:25:36,214 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 10:25:36,214 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:25:36,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:25:36,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1701250946, now seen corresponding path program 1 times [2023-08-30 10:25:36,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:25:36,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753114759] [2023-08-30 10:25:36,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:25:36,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:25:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:25:36,229 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:25:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:25:36,242 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:25:36,242 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:25:36,242 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:25:36,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-30 10:25:36,243 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 10:25:36,243 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:25:36,243 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:25:36,243 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 10:25:36,265 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 10:25:36,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 363 transitions, 756 flow [2023-08-30 10:25:36,345 INFO L130 PetriNetUnfolder]: 106/705 cut-off events. [2023-08-30 10:25:36,345 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 10:25:36,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 705 events. 106/705 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3070 event pairs, 1 based on Foata normal form. 0/543 useless extension candidates. Maximal degree in co-relation 495. Up to 16 conditions per place. [2023-08-30 10:25:36,353 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 363 transitions, 756 flow [2023-08-30 10:25:36,359 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 314 places, 361 transitions, 752 flow [2023-08-30 10:25:36,359 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:25:36,359 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 314 places, 361 transitions, 752 flow [2023-08-30 10:25:36,359 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 314 places, 361 transitions, 752 flow [2023-08-30 10:25:36,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 314 places, 361 transitions, 752 flow [2023-08-30 10:25:36,436 INFO L130 PetriNetUnfolder]: 105/703 cut-off events. [2023-08-30 10:25:36,436 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 10:25:36,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 731 conditions, 703 events. 105/703 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3084 event pairs, 1 based on Foata normal form. 0/542 useless extension candidates. Maximal degree in co-relation 493. Up to 16 conditions per place. [2023-08-30 10:25:36,466 INFO L119 LiptonReduction]: Number of co-enabled transitions 62208 [2023-08-30 10:25:42,761 INFO L134 LiptonReduction]: Checked pairs total: 153065 [2023-08-30 10:25:42,761 INFO L136 LiptonReduction]: Total number of compositions: 322 [2023-08-30 10:25:42,762 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:25:42,762 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;@57feee0f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:25:42,762 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-08-30 10:25:42,763 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 10:25:42,763 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:25:42,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:25:42,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 10:25:42,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:25:42,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:25:42,763 INFO L85 PathProgramCache]: Analyzing trace with hash 2714, now seen corresponding path program 1 times [2023-08-30 10:25:42,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:25:42,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537702543] [2023-08-30 10:25:42,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:25:42,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:25:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:25:42,767 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 10:25:42,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:25:42,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537702543] [2023-08-30 10:25:42,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537702543] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:25:42,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:25:42,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 10:25:42,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919571932] [2023-08-30 10:25:42,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:25:42,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 10:25:42,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:25:42,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 10:25:42,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 10:25:42,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 685 [2023-08-30 10:25:42,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 149 transitions, 328 flow. Second operand has 2 states, 2 states have (on average 307.5) internal successors, (615), 2 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:42,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:25:42,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 685 [2023-08-30 10:25:42,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:26:23,638 INFO L130 PetriNetUnfolder]: 547470/756695 cut-off events. [2023-08-30 10:26:23,638 INFO L131 PetriNetUnfolder]: For 5097/5097 co-relation queries the response was YES. [2023-08-30 10:26:24,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1480913 conditions, 756695 events. 547470/756695 cut-off events. For 5097/5097 co-relation queries the response was YES. Maximal size of possible extension queue 19565. Compared 6195697 event pairs, 527315 based on Foata normal form. 94989/643203 useless extension candidates. Maximal degree in co-relation 235214. Up to 721177 conditions per place. [2023-08-30 10:26:27,303 INFO L137 encePairwiseOnDemand]: 639/685 looper letters, 89 selfloop transitions, 0 changer transitions 0/103 dead transitions. [2023-08-30 10:26:27,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 103 transitions, 414 flow [2023-08-30 10:26:27,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 10:26:27,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 10:26:27,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 749 transitions. [2023-08-30 10:26:27,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5467153284671533 [2023-08-30 10:26:27,304 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 749 transitions. [2023-08-30 10:26:27,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 749 transitions. [2023-08-30 10:26:27,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:26:27,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 749 transitions. [2023-08-30 10:26:27,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 374.5) internal successors, (749), 2 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:26:27,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 685.0) internal successors, (2055), 3 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:26:27,306 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 685.0) internal successors, (2055), 3 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:26:27,307 INFO L175 Difference]: Start difference. First operand has 107 places, 149 transitions, 328 flow. Second operand 2 states and 749 transitions. [2023-08-30 10:26:27,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 103 transitions, 414 flow [2023-08-30 10:26:27,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 103 transitions, 414 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:26:27,312 INFO L231 Difference]: Finished difference. Result has 104 places, 103 transitions, 236 flow [2023-08-30 10:26:27,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=236, PETRI_PLACES=104, PETRI_TRANSITIONS=103} [2023-08-30 10:26:27,313 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -3 predicate places. [2023-08-30 10:26:27,313 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 103 transitions, 236 flow [2023-08-30 10:26:27,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 307.5) internal successors, (615), 2 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:26:27,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:26:27,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:26:27,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-30 10:26:27,314 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:26:27,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:26:27,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1707399536, now seen corresponding path program 1 times [2023-08-30 10:26:27,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:26:27,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575273096] [2023-08-30 10:26:27,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:26:27,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:26:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:26:27,340 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 10:26:27,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:26:27,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575273096] [2023-08-30 10:26:27,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575273096] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:26:27,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:26:27,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:26:27,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444010280] [2023-08-30 10:26:27,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:26:27,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:26:27,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:26:27,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:26:27,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:26:27,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 685 [2023-08-30 10:26:27,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 103 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 304.3333333333333) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:26:27,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:26:27,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 685 [2023-08-30 10:26:27,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:27:10,650 INFO L130 PetriNetUnfolder]: 548106/756736 cut-off events. [2023-08-30 10:27:10,651 INFO L131 PetriNetUnfolder]: For 5117/5117 co-relation queries the response was YES. [2023-08-30 10:27:11,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1481002 conditions, 756736 events. 548106/756736 cut-off events. For 5117/5117 co-relation queries the response was YES. Maximal size of possible extension queue 19161. Compared 6171424 event pairs, 345751 based on Foata normal form. 0/548451 useless extension candidates. Maximal degree in co-relation 1480996. Up to 721058 conditions per place. [2023-08-30 10:27:14,081 INFO L137 encePairwiseOnDemand]: 680/685 looper letters, 108 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2023-08-30 10:27:14,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 124 transitions, 498 flow [2023-08-30 10:27:14,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:27:14,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:27:14,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1022 transitions. [2023-08-30 10:27:14,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.497323600973236 [2023-08-30 10:27:14,082 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1022 transitions. [2023-08-30 10:27:14,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1022 transitions. [2023-08-30 10:27:14,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:27:14,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1022 transitions. [2023-08-30 10:27:14,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 340.6666666666667) internal successors, (1022), 3 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:27:14,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 685.0) internal successors, (2740), 4 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:27:14,086 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 685.0) internal successors, (2740), 4 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:27:14,086 INFO L175 Difference]: Start difference. First operand has 104 places, 103 transitions, 236 flow. Second operand 3 states and 1022 transitions. [2023-08-30 10:27:14,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 124 transitions, 498 flow [2023-08-30 10:27:14,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 124 transitions, 498 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:27:14,091 INFO L231 Difference]: Finished difference. Result has 107 places, 104 transitions, 252 flow [2023-08-30 10:27:14,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=107, PETRI_TRANSITIONS=104} [2023-08-30 10:27:14,092 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 0 predicate places. [2023-08-30 10:27:14,092 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 104 transitions, 252 flow [2023-08-30 10:27:14,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 304.3333333333333) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:27:14,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:27:14,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:27:14,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-30 10:27:14,093 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:27:14,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:27:14,093 INFO L85 PathProgramCache]: Analyzing trace with hash 522336218, now seen corresponding path program 1 times [2023-08-30 10:27:14,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:27:14,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404177692] [2023-08-30 10:27:14,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:27:14,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:27:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:27:14,160 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 10:27:14,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:27:14,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404177692] [2023-08-30 10:27:14,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404177692] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:27:14,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:27:14,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:27:14,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081263694] [2023-08-30 10:27:14,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:27:14,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:27:14,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:27:14,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:27:14,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:27:14,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 685 [2023-08-30 10:27:14,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 104 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 294.75) internal successors, (1179), 4 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:27:14,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:27:14,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 685 [2023-08-30 10:27:14,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:28:11,737 INFO L130 PetriNetUnfolder]: 686891/965449 cut-off events. [2023-08-30 10:28:11,738 INFO L131 PetriNetUnfolder]: For 25307/25307 co-relation queries the response was YES. [2023-08-30 10:28:13,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1939388 conditions, 965449 events. 686891/965449 cut-off events. For 25307/25307 co-relation queries the response was YES. Maximal size of possible extension queue 27123. Compared 8449675 event pairs, 200932 based on Foata normal form. 2964/749931 useless extension candidates. Maximal degree in co-relation 1939380. Up to 661770 conditions per place. [2023-08-30 10:28:16,533 INFO L137 encePairwiseOnDemand]: 659/685 looper letters, 201 selfloop transitions, 18 changer transitions 0/233 dead transitions. [2023-08-30 10:28:16,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 233 transitions, 1004 flow [2023-08-30 10:28:16,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:28:16,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:28:16,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1407 transitions. [2023-08-30 10:28:16,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135036496350365 [2023-08-30 10:28:16,535 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1407 transitions. [2023-08-30 10:28:16,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1407 transitions. [2023-08-30 10:28:16,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:28:16,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1407 transitions. [2023-08-30 10:28:16,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 351.75) internal successors, (1407), 4 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:28:16,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 685.0) internal successors, (3425), 5 states have internal predecessors, (3425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:28:16,538 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 685.0) internal successors, (3425), 5 states have internal predecessors, (3425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:28:16,538 INFO L175 Difference]: Start difference. First operand has 107 places, 104 transitions, 252 flow. Second operand 4 states and 1407 transitions. [2023-08-30 10:28:16,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 233 transitions, 1004 flow [2023-08-30 10:28:16,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 233 transitions, 1001 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:28:16,550 INFO L231 Difference]: Finished difference. Result has 112 places, 121 transitions, 418 flow [2023-08-30 10:28:16,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=418, PETRI_PLACES=112, PETRI_TRANSITIONS=121} [2023-08-30 10:28:16,550 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 5 predicate places. [2023-08-30 10:28:16,550 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 121 transitions, 418 flow [2023-08-30 10:28:16,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 294.75) internal successors, (1179), 4 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:28:16,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:28:16,551 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:28:16,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-30 10:28:16,551 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:28:16,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:28:16,552 INFO L85 PathProgramCache]: Analyzing trace with hash 781760685, now seen corresponding path program 1 times [2023-08-30 10:28:16,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:28:16,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904018973] [2023-08-30 10:28:16,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:28:16,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:28:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:28:16,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:28:16,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:28:16,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904018973] [2023-08-30 10:28:16,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904018973] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:28:16,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:28:16,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:28:16,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518019962] [2023-08-30 10:28:16,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:28:16,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:28:16,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:28:16,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:28:16,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:28:16,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 685 [2023-08-30 10:28:16,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 121 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:28:16,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:28:16,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 685 [2023-08-30 10:28:16,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:29:20,540 INFO L130 PetriNetUnfolder]: 664896/939192 cut-off events. [2023-08-30 10:29:20,541 INFO L131 PetriNetUnfolder]: For 260639/260679 co-relation queries the response was YES. [2023-08-30 10:29:22,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2224495 conditions, 939192 events. 664896/939192 cut-off events. For 260639/260679 co-relation queries the response was YES. Maximal size of possible extension queue 26282. Compared 8257418 event pairs, 587335 based on Foata normal form. 0/789841 useless extension candidates. Maximal degree in co-relation 2224485. Up to 900824 conditions per place. [2023-08-30 10:29:25,798 INFO L137 encePairwiseOnDemand]: 683/685 looper letters, 105 selfloop transitions, 1 changer transitions 0/120 dead transitions. [2023-08-30 10:29:25,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 120 transitions, 626 flow [2023-08-30 10:29:25,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:29:25,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:29:25,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 998 transitions. [2023-08-30 10:29:25,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4856447688564477 [2023-08-30 10:29:25,800 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 998 transitions. [2023-08-30 10:29:25,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 998 transitions. [2023-08-30 10:29:25,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:29:25,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 998 transitions. [2023-08-30 10:29:25,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:25,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 685.0) internal successors, (2740), 4 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:25,802 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 685.0) internal successors, (2740), 4 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:25,802 INFO L175 Difference]: Start difference. First operand has 112 places, 121 transitions, 418 flow. Second operand 3 states and 998 transitions. [2023-08-30 10:29:25,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 120 transitions, 626 flow [2023-08-30 10:29:25,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 120 transitions, 626 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:29:25,954 INFO L231 Difference]: Finished difference. Result has 113 places, 120 transitions, 416 flow [2023-08-30 10:29:25,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=416, PETRI_PLACES=113, PETRI_TRANSITIONS=120} [2023-08-30 10:29:25,955 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 6 predicate places. [2023-08-30 10:29:25,955 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 120 transitions, 416 flow [2023-08-30 10:29:25,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:25,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:29:25,955 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:29:25,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-30 10:29:25,956 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:29:25,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:29:25,956 INFO L85 PathProgramCache]: Analyzing trace with hash 781760790, now seen corresponding path program 1 times [2023-08-30 10:29:25,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:29:25,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698778699] [2023-08-30 10:29:25,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:29:25,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:29:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:29:25,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:29:25,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:29:25,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698778699] [2023-08-30 10:29:25,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698778699] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:29:25,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:29:25,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:29:25,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913900333] [2023-08-30 10:29:25,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:29:25,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:29:25,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:29:25,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:29:25,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:29:25,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 685 [2023-08-30 10:29:25,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 120 transitions, 416 flow. Second operand has 3 states, 3 states have (on average 304.3333333333333) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:25,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:29:25,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 685 [2023-08-30 10:29:25,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:24,293 INFO L130 PetriNetUnfolder]: 638029/897216 cut-off events. [2023-08-30 10:30:24,293 INFO L131 PetriNetUnfolder]: For 262806/262814 co-relation queries the response was YES. [2023-08-30 10:30:26,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2135488 conditions, 897216 events. 638029/897216 cut-off events. For 262806/262814 co-relation queries the response was YES. Maximal size of possible extension queue 25203. Compared 7961833 event pairs, 122157 based on Foata normal form. 1/760570 useless extension candidates. Maximal degree in co-relation 2135477. Up to 815895 conditions per place. [2023-08-30 10:30:29,374 INFO L137 encePairwiseOnDemand]: 681/685 looper letters, 167 selfloop transitions, 5 changer transitions 0/186 dead transitions. [2023-08-30 10:30:29,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 186 transitions, 994 flow [2023-08-30 10:30:29,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:30:29,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:30:29,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1049 transitions. [2023-08-30 10:30:29,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104622871046228 [2023-08-30 10:30:29,376 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1049 transitions. [2023-08-30 10:30:29,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1049 transitions. [2023-08-30 10:30:29,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:29,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1049 transitions. [2023-08-30 10:30:29,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 349.6666666666667) internal successors, (1049), 3 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:29,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 685.0) internal successors, (2740), 4 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:29,379 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 685.0) internal successors, (2740), 4 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:29,379 INFO L175 Difference]: Start difference. First operand has 113 places, 120 transitions, 416 flow. Second operand 3 states and 1049 transitions. [2023-08-30 10:30:29,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 186 transitions, 994 flow [2023-08-30 10:30:29,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 186 transitions, 993 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:30:29,411 INFO L231 Difference]: Finished difference. Result has 114 places, 120 transitions, 432 flow [2023-08-30 10:30:29,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=432, PETRI_PLACES=114, PETRI_TRANSITIONS=120} [2023-08-30 10:30:29,412 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 7 predicate places. [2023-08-30 10:30:29,412 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 120 transitions, 432 flow [2023-08-30 10:30:29,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 304.3333333333333) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:29,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:29,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:29,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-30 10:30:29,412 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:30:29,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:29,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1505295704, now seen corresponding path program 1 times [2023-08-30 10:30:29,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:29,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645699354] [2023-08-30 10:30:29,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:29,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:29,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:30:29,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:29,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645699354] [2023-08-30 10:30:29,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645699354] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:30:29,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336795955] [2023-08-30 10:30:29,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:29,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:30:29,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:30:29,444 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 10:30:29,446 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 10:30:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:29,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:30:29,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:30:29,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:30:29,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:30:29,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:30:29,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336795955] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:30:29,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:30:29,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 10:30:29,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622826858] [2023-08-30 10:30:29,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:30:29,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:30:29,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:29,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:30:29,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:30:29,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 685 [2023-08-30 10:30:29,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 120 transitions, 432 flow. Second operand has 6 states, 6 states have (on average 304.1666666666667) internal successors, (1825), 6 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:29,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:29,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 685 [2023-08-30 10:30:29,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:35,482 INFO L130 PetriNetUnfolder]: 63634/98528 cut-off events. [2023-08-30 10:30:35,483 INFO L131 PetriNetUnfolder]: For 98205/98265 co-relation queries the response was YES. [2023-08-30 10:30:35,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289287 conditions, 98528 events. 63634/98528 cut-off events. For 98205/98265 co-relation queries the response was YES. Maximal size of possible extension queue 4081. Compared 835997 event pairs, 1868 based on Foata normal form. 8995/98163 useless extension candidates. Maximal degree in co-relation 289276. Up to 63591 conditions per place. [2023-08-30 10:30:36,177 INFO L137 encePairwiseOnDemand]: 682/685 looper letters, 200 selfloop transitions, 4 changer transitions 0/215 dead transitions. [2023-08-30 10:30:36,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 215 transitions, 1193 flow [2023-08-30 10:30:36,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:30:36,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:30:36,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1987 transitions. [2023-08-30 10:30:36,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4834549878345499 [2023-08-30 10:30:36,179 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1987 transitions. [2023-08-30 10:30:36,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1987 transitions. [2023-08-30 10:30:36,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:36,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1987 transitions. [2023-08-30 10:30:36,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 331.1666666666667) internal successors, (1987), 6 states have internal predecessors, (1987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:36,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 685.0) internal successors, (4795), 7 states have internal predecessors, (4795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:36,183 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 685.0) internal successors, (4795), 7 states have internal predecessors, (4795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:36,183 INFO L175 Difference]: Start difference. First operand has 114 places, 120 transitions, 432 flow. Second operand 6 states and 1987 transitions. [2023-08-30 10:30:36,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 215 transitions, 1193 flow [2023-08-30 10:30:36,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 215 transitions, 1178 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 10:30:36,218 INFO L231 Difference]: Finished difference. Result has 92 places, 87 transitions, 334 flow [2023-08-30 10:30:36,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=334, PETRI_PLACES=92, PETRI_TRANSITIONS=87} [2023-08-30 10:30:36,218 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -15 predicate places. [2023-08-30 10:30:36,219 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 87 transitions, 334 flow [2023-08-30 10:30:36,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 304.1666666666667) internal successors, (1825), 6 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:36,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:36,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:36,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 10:30:36,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:30:36,420 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:30:36,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:36,420 INFO L85 PathProgramCache]: Analyzing trace with hash -650375588, now seen corresponding path program 1 times [2023-08-30 10:30:36,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:36,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46353589] [2023-08-30 10:30:36,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:36,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:36,532 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 10:30:36,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:36,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46353589] [2023-08-30 10:30:36,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46353589] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:30:36,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:30:36,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:30:36,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564627125] [2023-08-30 10:30:36,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:30:36,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:30:36,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:36,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:30:36,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:30:36,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 685 [2023-08-30 10:30:36,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 87 transitions, 334 flow. Second operand has 6 states, 6 states have (on average 290.8333333333333) internal successors, (1745), 6 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:36,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:36,715 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 685 [2023-08-30 10:30:36,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:43,933 INFO L130 PetriNetUnfolder]: 82371/122750 cut-off events. [2023-08-30 10:30:43,934 INFO L131 PetriNetUnfolder]: For 128522/128842 co-relation queries the response was YES. [2023-08-30 10:30:44,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343275 conditions, 122750 events. 82371/122750 cut-off events. For 128522/128842 co-relation queries the response was YES. Maximal size of possible extension queue 4949. Compared 1013704 event pairs, 17654 based on Foata normal form. 879/113216 useless extension candidates. Maximal degree in co-relation 343263. Up to 76435 conditions per place. [2023-08-30 10:30:44,795 INFO L137 encePairwiseOnDemand]: 660/685 looper letters, 236 selfloop transitions, 33 changer transitions 0/280 dead transitions. [2023-08-30 10:30:44,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 280 transitions, 1554 flow [2023-08-30 10:30:44,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:30:44,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:30:44,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2277 transitions. [2023-08-30 10:30:44,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4748696558915537 [2023-08-30 10:30:44,797 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2277 transitions. [2023-08-30 10:30:44,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2277 transitions. [2023-08-30 10:30:44,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:44,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2277 transitions. [2023-08-30 10:30:44,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 325.2857142857143) internal successors, (2277), 7 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:44,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 685.0) internal successors, (5480), 8 states have internal predecessors, (5480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:44,801 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 685.0) internal successors, (5480), 8 states have internal predecessors, (5480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:44,802 INFO L175 Difference]: Start difference. First operand has 92 places, 87 transitions, 334 flow. Second operand 7 states and 2277 transitions. [2023-08-30 10:30:44,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 280 transitions, 1554 flow [2023-08-30 10:30:44,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 280 transitions, 1517 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-30 10:30:44,838 INFO L231 Difference]: Finished difference. Result has 100 places, 116 transitions, 667 flow [2023-08-30 10:30:44,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=667, PETRI_PLACES=100, PETRI_TRANSITIONS=116} [2023-08-30 10:30:44,839 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -7 predicate places. [2023-08-30 10:30:44,839 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 116 transitions, 667 flow [2023-08-30 10:30:44,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 290.8333333333333) internal successors, (1745), 6 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:44,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:44,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:44,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-30 10:30:44,839 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:30:44,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:44,840 INFO L85 PathProgramCache]: Analyzing trace with hash -650375587, now seen corresponding path program 1 times [2023-08-30 10:30:44,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:44,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887423556] [2023-08-30 10:30:44,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:44,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:44,894 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 10:30:44,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:44,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887423556] [2023-08-30 10:30:44,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887423556] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:30:44,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:30:44,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:30:44,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823148653] [2023-08-30 10:30:44,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:30:44,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:30:44,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:44,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:30:44,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:30:45,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 685 [2023-08-30 10:30:45,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 116 transitions, 667 flow. Second operand has 4 states, 4 states have (on average 293.75) internal successors, (1175), 4 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:45,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:45,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 685 [2023-08-30 10:30:45,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:55,902 INFO L130 PetriNetUnfolder]: 103535/159141 cut-off events. [2023-08-30 10:30:55,902 INFO L131 PetriNetUnfolder]: For 305432/306764 co-relation queries the response was YES. [2023-08-30 10:30:56,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521121 conditions, 159141 events. 103535/159141 cut-off events. For 305432/306764 co-relation queries the response was YES. Maximal size of possible extension queue 6258. Compared 1420821 event pairs, 29993 based on Foata normal form. 4347/157574 useless extension candidates. Maximal degree in co-relation 521106. Up to 67788 conditions per place. [2023-08-30 10:30:57,093 INFO L137 encePairwiseOnDemand]: 662/685 looper letters, 220 selfloop transitions, 75 changer transitions 0/306 dead transitions. [2023-08-30 10:30:57,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 306 transitions, 2339 flow [2023-08-30 10:30:57,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:30:57,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:30:57,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1651 transitions. [2023-08-30 10:30:57,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.482043795620438 [2023-08-30 10:30:57,095 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1651 transitions. [2023-08-30 10:30:57,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1651 transitions. [2023-08-30 10:30:57,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:57,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1651 transitions. [2023-08-30 10:30:57,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 330.2) internal successors, (1651), 5 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:57,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 685.0) internal successors, (4110), 6 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:57,100 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 685.0) internal successors, (4110), 6 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:57,100 INFO L175 Difference]: Start difference. First operand has 100 places, 116 transitions, 667 flow. Second operand 5 states and 1651 transitions. [2023-08-30 10:30:57,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 306 transitions, 2339 flow [2023-08-30 10:30:57,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 306 transitions, 2308 flow, removed 10 selfloop flow, removed 1 redundant places. [2023-08-30 10:30:57,675 INFO L231 Difference]: Finished difference. Result has 107 places, 180 transitions, 1570 flow [2023-08-30 10:30:57,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1570, PETRI_PLACES=107, PETRI_TRANSITIONS=180} [2023-08-30 10:30:57,676 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 0 predicate places. [2023-08-30 10:30:57,676 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 180 transitions, 1570 flow [2023-08-30 10:30:57,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 293.75) internal successors, (1175), 4 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:57,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:57,676 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:57,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-30 10:30:57,676 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:30:57,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:57,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1087080296, now seen corresponding path program 1 times [2023-08-30 10:30:57,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:57,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174138943] [2023-08-30 10:30:57,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:57,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:57,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:30:57,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:57,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174138943] [2023-08-30 10:30:57,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174138943] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:30:57,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838992415] [2023-08-30 10:30:57,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:57,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:30:57,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:30:57,821 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 10:30:57,828 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 10:30:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:57,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 10:30:57,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:30:58,064 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:30:58,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:30:58,083 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 10:30:58,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:30:58,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2023-08-30 10:30:58,456 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:30:58,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 82 treesize of output 95 [2023-08-30 10:30:58,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2023-08-30 10:30:58,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:30:58,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:30:58,589 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1380 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1380) |c_~#B~0.base|) |c_~#B~0.offset|) 2147483648))) is different from false [2023-08-30 10:30:58,598 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1378 Int) (v_ArrVal_1380 (Array Int Int))) (or (< v_ArrVal_1378 (+ |c_t_funThread1of3ForFork0_#t~post7#1| 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#B~0.base| (store (select |c_#memory_int| |c_~#B~0.base|) |c_~#B~0.offset| v_ArrVal_1378)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1380) |c_~#B~0.base|) |c_~#B~0.offset|) 2147483648)))) is different from false [2023-08-30 10:30:58,605 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1378 Int) (v_ArrVal_1380 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_~#B~0.base|))) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#B~0.base| (store .cse0 |c_~#B~0.offset| v_ArrVal_1378)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1380) |c_~#B~0.base|) |c_~#B~0.offset|) 2147483648)) (< v_ArrVal_1378 (+ (select .cse0 |c_~#B~0.offset|) 1))))) is different from false [2023-08-30 10:30:58,640 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1377 (Array Int Int)) (v_ArrVal_1378 Int) (v_ArrVal_1380 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1377))) (let ((.cse1 (select .cse0 |c_~#B~0.base|))) (or (< 0 (+ (select (select (store (store .cse0 |c_~#B~0.base| (store .cse1 |c_~#B~0.offset| v_ArrVal_1378)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1380) |c_~#B~0.base|) |c_~#B~0.offset|) 2147483648)) (< v_ArrVal_1378 (+ (select .cse1 |c_~#B~0.offset|) 1)))))) is different from false [2023-08-30 10:30:58,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 10:30:58,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838992415] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:30:58,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:30:58,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5] total 13 [2023-08-30 10:30:58,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065592162] [2023-08-30 10:30:58,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:30:58,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 10:30:58,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:58,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 10:30:58,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=80, Unknown=4, NotChecked=84, Total=210 [2023-08-30 10:30:58,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 685 [2023-08-30 10:30:58,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 180 transitions, 1570 flow. Second operand has 15 states, 15 states have (on average 251.6) internal successors, (3774), 15 states have internal predecessors, (3774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:58,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:58,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 685 [2023-08-30 10:30:58,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:31:14,561 INFO L130 PetriNetUnfolder]: 114692/175204 cut-off events. [2023-08-30 10:31:14,561 INFO L131 PetriNetUnfolder]: For 630766/630895 co-relation queries the response was YES. [2023-08-30 10:31:15,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679853 conditions, 175204 events. 114692/175204 cut-off events. For 630766/630895 co-relation queries the response was YES. Maximal size of possible extension queue 6715. Compared 1555202 event pairs, 22409 based on Foata normal form. 2247/171112 useless extension candidates. Maximal degree in co-relation 679834. Up to 86569 conditions per place. [2023-08-30 10:31:16,075 INFO L137 encePairwiseOnDemand]: 660/685 looper letters, 445 selfloop transitions, 157 changer transitions 2/614 dead transitions. [2023-08-30 10:31:16,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 614 transitions, 5405 flow [2023-08-30 10:31:16,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 10:31:16,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 10:31:16,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3686 transitions. [2023-08-30 10:31:16,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4139247613700168 [2023-08-30 10:31:16,080 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3686 transitions. [2023-08-30 10:31:16,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3686 transitions. [2023-08-30 10:31:16,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:31:16,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3686 transitions. [2023-08-30 10:31:16,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 283.53846153846155) internal successors, (3686), 13 states have internal predecessors, (3686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:31:16,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 685.0) internal successors, (9590), 14 states have internal predecessors, (9590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:31:16,090 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 685.0) internal successors, (9590), 14 states have internal predecessors, (9590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:31:16,090 INFO L175 Difference]: Start difference. First operand has 107 places, 180 transitions, 1570 flow. Second operand 13 states and 3686 transitions. [2023-08-30 10:31:16,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 614 transitions, 5405 flow [2023-08-30 10:31:17,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 614 transitions, 5405 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:31:17,289 INFO L231 Difference]: Finished difference. Result has 129 places, 284 transitions, 3509 flow [2023-08-30 10:31:17,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3509, PETRI_PLACES=129, PETRI_TRANSITIONS=284} [2023-08-30 10:31:17,290 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 22 predicate places. [2023-08-30 10:31:17,290 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 284 transitions, 3509 flow [2023-08-30 10:31:17,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 251.6) internal successors, (3774), 15 states have internal predecessors, (3774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:31:17,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:31:17,291 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:31:17,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-30 10:31:17,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:31:17,491 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:31:17,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:31:17,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1087080297, now seen corresponding path program 1 times [2023-08-30 10:31:17,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:31:17,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313603942] [2023-08-30 10:31:17,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:31:17,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:31:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:31:17,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:31:17,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:31:17,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313603942] [2023-08-30 10:31:17,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313603942] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:31:17,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663651893] [2023-08-30 10:31:17,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:31:17,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:31:17,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:31:17,617 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 10:31:17,623 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 10:31:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:31:17,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 10:31:17,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:31:18,076 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:31:18,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:31:18,081 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:31:18,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 71 treesize of output 25 [2023-08-30 10:31:18,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:31:18,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:31:18,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:31:18,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:31:18,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663651893] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:31:18,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:31:18,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-08-30 10:31:18,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68272967] [2023-08-30 10:31:18,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:31:18,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:31:18,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:31:18,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:31:18,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-30 10:31:18,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 685 [2023-08-30 10:31:18,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 284 transitions, 3509 flow. Second operand has 6 states, 6 states have (on average 290.1666666666667) internal successors, (1741), 6 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:31:18,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:31:18,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 685 [2023-08-30 10:31:18,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:31:36,859 INFO L130 PetriNetUnfolder]: 110384/170999 cut-off events. [2023-08-30 10:31:36,859 INFO L131 PetriNetUnfolder]: For 1043827/1043960 co-relation queries the response was YES. [2023-08-30 10:31:37,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745320 conditions, 170999 events. 110384/170999 cut-off events. For 1043827/1043960 co-relation queries the response was YES. Maximal size of possible extension queue 6587. Compared 1547039 event pairs, 48732 based on Foata normal form. 2322/167301 useless extension candidates. Maximal degree in co-relation 745291. Up to 100653 conditions per place. [2023-08-30 10:31:38,624 INFO L137 encePairwiseOnDemand]: 663/685 looper letters, 332 selfloop transitions, 116 changer transitions 0/459 dead transitions. [2023-08-30 10:31:38,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 459 transitions, 6034 flow [2023-08-30 10:31:38,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:31:38,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:31:38,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1912 transitions. [2023-08-30 10:31:38,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46520681265206815 [2023-08-30 10:31:38,626 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1912 transitions. [2023-08-30 10:31:38,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1912 transitions. [2023-08-30 10:31:38,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:31:38,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1912 transitions. [2023-08-30 10:31:38,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 318.6666666666667) internal successors, (1912), 6 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:31:38,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 685.0) internal successors, (4795), 7 states have internal predecessors, (4795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:31:38,631 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 685.0) internal successors, (4795), 7 states have internal predecessors, (4795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:31:38,631 INFO L175 Difference]: Start difference. First operand has 129 places, 284 transitions, 3509 flow. Second operand 6 states and 1912 transitions. [2023-08-30 10:31:38,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 459 transitions, 6034 flow [2023-08-30 10:31:54,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 459 transitions, 5963 flow, removed 28 selfloop flow, removed 2 redundant places. [2023-08-30 10:31:54,479 INFO L231 Difference]: Finished difference. Result has 136 places, 336 transitions, 4829 flow [2023-08-30 10:31:54,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=3386, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4829, PETRI_PLACES=136, PETRI_TRANSITIONS=336} [2023-08-30 10:31:54,480 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 29 predicate places. [2023-08-30 10:31:54,480 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 336 transitions, 4829 flow [2023-08-30 10:31:54,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 290.1666666666667) internal successors, (1741), 6 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:31:54,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:31:54,480 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:31:54,485 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 10:31:54,681 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,SelfDestructingSolverStorable44 [2023-08-30 10:31:54,681 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:31:54,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:31:54,681 INFO L85 PathProgramCache]: Analyzing trace with hash 354524955, now seen corresponding path program 1 times [2023-08-30 10:31:54,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:31:54,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540883097] [2023-08-30 10:31:54,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:31:54,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:31:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:31:54,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:31:54,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:31:54,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540883097] [2023-08-30 10:31:54,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540883097] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:31:54,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720707765] [2023-08-30 10:31:54,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:31:54,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:31:54,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:31:54,825 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 10:31:54,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 10:31:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:31:54,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 10:31:54,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:31:55,093 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:31:55,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:31:55,113 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 10:31:55,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:31:55,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2023-08-30 10:31:55,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2023-08-30 10:31:55,401 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:31:55,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 82 treesize of output 95 [2023-08-30 10:31:55,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:31:55,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:31:55,505 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1481 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1481) |c_~#B~0.base|) |c_~#B~0.offset|) 2147483649))) is different from false [2023-08-30 10:31:55,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-30 10:31:55,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720707765] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:31:55,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:31:55,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-08-30 10:31:55,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962874726] [2023-08-30 10:31:55,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:31:55,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 10:31:55,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:31:55,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 10:31:55,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=108, Unknown=1, NotChecked=22, Total=182 [2023-08-30 10:31:55,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 685 [2023-08-30 10:31:55,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 336 transitions, 4829 flow. Second operand has 14 states, 14 states have (on average 251.78571428571428) internal successors, (3525), 14 states have internal predecessors, (3525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:31:55,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:31:55,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 685 [2023-08-30 10:31:55,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:32:25,808 INFO L130 PetriNetUnfolder]: 157087/240102 cut-off events. [2023-08-30 10:32:25,808 INFO L131 PetriNetUnfolder]: For 1894181/1894342 co-relation queries the response was YES. [2023-08-30 10:32:27,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1128171 conditions, 240102 events. 157087/240102 cut-off events. For 1894181/1894342 co-relation queries the response was YES. Maximal size of possible extension queue 9216. Compared 2202993 event pairs, 21669 based on Foata normal form. 3960/236851 useless extension candidates. Maximal degree in co-relation 1128137. Up to 100198 conditions per place. [2023-08-30 10:32:28,254 INFO L137 encePairwiseOnDemand]: 659/685 looper letters, 809 selfloop transitions, 579 changer transitions 5/1403 dead transitions. [2023-08-30 10:32:28,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 1403 transitions, 19455 flow [2023-08-30 10:32:28,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 10:32:28,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 10:32:28,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5131 transitions. [2023-08-30 10:32:28,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.416139497161395 [2023-08-30 10:32:28,258 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5131 transitions. [2023-08-30 10:32:28,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5131 transitions. [2023-08-30 10:32:28,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:32:28,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5131 transitions. [2023-08-30 10:32:28,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 285.05555555555554) internal successors, (5131), 18 states have internal predecessors, (5131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:28,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 685.0) internal successors, (13015), 19 states have internal predecessors, (13015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:28,273 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 685.0) internal successors, (13015), 19 states have internal predecessors, (13015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:28,273 INFO L175 Difference]: Start difference. First operand has 136 places, 336 transitions, 4829 flow. Second operand 18 states and 5131 transitions. [2023-08-30 10:32:28,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 1403 transitions, 19455 flow [2023-08-30 10:33:48,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 1403 transitions, 19266 flow, removed 94 selfloop flow, removed 1 redundant places. [2023-08-30 10:33:48,315 INFO L231 Difference]: Finished difference. Result has 165 places, 820 transitions, 14897 flow [2023-08-30 10:33:48,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=4776, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=14897, PETRI_PLACES=165, PETRI_TRANSITIONS=820} [2023-08-30 10:33:48,316 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 58 predicate places. [2023-08-30 10:33:48,316 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 820 transitions, 14897 flow [2023-08-30 10:33:48,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 251.78571428571428) internal successors, (3525), 14 states have internal predecessors, (3525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:33:48,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:33:48,316 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:33:48,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-30 10:33:48,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:33:48,517 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:33:48,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:33:48,517 INFO L85 PathProgramCache]: Analyzing trace with hash 354524956, now seen corresponding path program 1 times [2023-08-30 10:33:48,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:33:48,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297826289] [2023-08-30 10:33:48,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:33:48,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:33:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:33:48,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:33:48,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:33:48,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297826289] [2023-08-30 10:33:48,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297826289] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:33:48,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:33:48,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:33:48,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87042657] [2023-08-30 10:33:48,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:33:48,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:33:48,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:33:48,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:33:48,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:33:48,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 685 [2023-08-30 10:33:48,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 820 transitions, 14897 flow. Second operand has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:33:48,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:33:48,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 685 [2023-08-30 10:33:48,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:34:36,910 INFO L130 PetriNetUnfolder]: 146733/227642 cut-off events. [2023-08-30 10:34:36,910 INFO L131 PetriNetUnfolder]: For 2563153/2565760 co-relation queries the response was YES. [2023-08-30 10:34:38,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1205772 conditions, 227642 events. 146733/227642 cut-off events. For 2563153/2565760 co-relation queries the response was YES. Maximal size of possible extension queue 8947. Compared 2135299 event pairs, 37026 based on Foata normal form. 4106/224900 useless extension candidates. Maximal degree in co-relation 1205726. Up to 91461 conditions per place. [2023-08-30 10:34:39,706 INFO L137 encePairwiseOnDemand]: 662/685 looper letters, 723 selfloop transitions, 586 changer transitions 1/1321 dead transitions. [2023-08-30 10:34:39,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 1321 transitions, 25712 flow [2023-08-30 10:34:39,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:34:39,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:34:39,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1653 transitions. [2023-08-30 10:34:39,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826277372262774 [2023-08-30 10:34:39,708 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1653 transitions. [2023-08-30 10:34:39,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1653 transitions. [2023-08-30 10:34:39,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:34:39,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1653 transitions. [2023-08-30 10:34:39,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 330.6) internal successors, (1653), 5 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:34:39,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 685.0) internal successors, (4110), 6 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:34:39,713 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 685.0) internal successors, (4110), 6 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:34:39,713 INFO L175 Difference]: Start difference. First operand has 165 places, 820 transitions, 14897 flow. Second operand 5 states and 1653 transitions. [2023-08-30 10:34:39,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 1321 transitions, 25712 flow Killed by 15