./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_73-funloop_hard_racefree.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_73-funloop_hard_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 --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 10:17:01,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:17:01,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:17:01,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:17:01,281 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:17:01,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:17:01,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:17:01,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:17:01,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:17:01,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:17:01,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:17:01,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:17:01,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:17:01,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:17:01,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:17:01,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:17:01,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:17:01,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:17:01,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:17:01,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:17:01,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:17:01,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:17:01,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:17:01,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:17:01,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:17:01,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:17:01,327 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:17:01,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:17:01,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:17:01,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:17:01,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:17:01,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:17:01,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:17:01,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:17:01,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:17:01,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:17:01,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:17:01,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:17:01,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:17:01,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:17:01,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:17:01,353 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:17:01,388 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:17:01,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:17:01,389 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:17:01,389 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:17:01,390 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:17:01,390 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:17:01,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:17:01,391 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:17:01,391 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:17:01,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:17:01,392 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:17:01,393 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:17:01,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:17:01,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:17:01,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:17:01,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:17:01,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:17:01,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:17:01,394 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:17:01,394 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:17:01,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:17:01,394 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:17:01,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:17:01,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:17:01,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:17:01,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:17:01,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:17:01,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:17:01,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:17:01,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:17:01,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:17:01,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:17:01,397 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:17:01,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:17:01,397 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:17:01,397 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:17:01,397 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:17:01,397 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:17:01,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:17:01,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:17:01,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:17:01,769 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:17:01,769 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:17:01,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2023-08-30 10:17:03,071 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:17:03,314 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:17:03,315 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2023-08-30 10:17:03,339 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b60cfcaa1/5557d345c9c2439cbd5994abff477870/FLAGb7b554768 [2023-08-30 10:17:03,352 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b60cfcaa1/5557d345c9c2439cbd5994abff477870 [2023-08-30 10:17:03,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:17:03,356 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:17:03,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:17:03,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:17:03,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:17:03,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:17:03" (1/1) ... [2023-08-30 10:17:03,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f527a78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:17:03, skipping insertion in model container [2023-08-30 10:17:03,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:17:03" (1/1) ... [2023-08-30 10:17:03,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:17:03,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:17:03,889 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_73-funloop_hard_racefree.i[41323,41336] [2023-08-30 10:17:03,927 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:17:03,949 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:17:03,997 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_73-funloop_hard_racefree.i[41323,41336] [2023-08-30 10:17:04,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:17:04,087 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:17:04,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:17:04 WrapperNode [2023-08-30 10:17:04,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:17:04,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:17:04,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:17:04,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:17:04,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:17:04" (1/1) ... [2023-08-30 10:17:04,127 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:17:04" (1/1) ... [2023-08-30 10:17:04,175 INFO L138 Inliner]: procedures = 271, calls = 41, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 272 [2023-08-30 10:17:04,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:17:04,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:17:04,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:17:04,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:17:04,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:17:04" (1/1) ... [2023-08-30 10:17:04,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:17:04" (1/1) ... [2023-08-30 10:17:04,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:17:04" (1/1) ... [2023-08-30 10:17:04,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:17:04" (1/1) ... [2023-08-30 10:17:04,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:17:04" (1/1) ... [2023-08-30 10:17:04,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:17:04" (1/1) ... [2023-08-30 10:17:04,234 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:17:04" (1/1) ... [2023-08-30 10:17:04,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:17:04" (1/1) ... [2023-08-30 10:17:04,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:17:04,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:17:04,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:17:04,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:17:04,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:17:04" (1/1) ... [2023-08-30 10:17:04,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:17:04,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:17:04,283 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 10:17:04,297 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 10:17:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:17:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:17:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:17:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:17:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 10:17:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:17:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 10:17:04,324 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 10:17:04,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:17:04,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:17:04,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:17:04,326 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 10:17:04,446 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:17:04,448 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:17:04,822 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:17:04,832 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:17:04,832 INFO L302 CfgBuilder]: Removed 35 assume(true) statements. [2023-08-30 10:17:04,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:17:04 BoogieIcfgContainer [2023-08-30 10:17:04,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:17:04,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:17:04,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:17:04,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:17:04,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:17:03" (1/3) ... [2023-08-30 10:17:04,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a558c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:17:04, skipping insertion in model container [2023-08-30 10:17:04,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:17:04" (2/3) ... [2023-08-30 10:17:04,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a558c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:17:04, skipping insertion in model container [2023-08-30 10:17:04,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:17:04" (3/3) ... [2023-08-30 10:17:04,848 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_73-funloop_hard_racefree.i [2023-08-30 10:17:04,856 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:17:04,867 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:17:04,867 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-08-30 10:17:04,867 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:17:04,978 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 10:17:05,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 287 transitions, 582 flow [2023-08-30 10:17:05,204 INFO L130 PetriNetUnfolder]: 73/440 cut-off events. [2023-08-30 10:17:05,204 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:17:05,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 440 events. 73/440 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2094 event pairs, 0 based on Foata normal form. 0/332 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2023-08-30 10:17:05,214 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 287 transitions, 582 flow [2023-08-30 10:17:05,222 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 284 transitions, 576 flow [2023-08-30 10:17:05,225 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:17:05,234 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 243 places, 284 transitions, 576 flow [2023-08-30 10:17:05,236 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 243 places, 284 transitions, 576 flow [2023-08-30 10:17:05,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 284 transitions, 576 flow [2023-08-30 10:17:05,301 INFO L130 PetriNetUnfolder]: 72/437 cut-off events. [2023-08-30 10:17:05,301 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:17:05,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 437 events. 72/437 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2079 event pairs, 0 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2023-08-30 10:17:05,320 INFO L119 LiptonReduction]: Number of co-enabled transitions 26080 [2023-08-30 10:17:09,083 INFO L134 LiptonReduction]: Checked pairs total: 39972 [2023-08-30 10:17:09,084 INFO L136 LiptonReduction]: Total number of compositions: 244 [2023-08-30 10:17:09,113 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:17:09,120 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;@480b8306, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:17:09,120 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-08-30 10:17:09,123 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 10:17:09,124 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:17:09,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:09,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 10:17:09,126 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:17:09,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:09,133 INFO L85 PathProgramCache]: Analyzing trace with hash 35433, now seen corresponding path program 1 times [2023-08-30 10:17:09,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:09,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601686748] [2023-08-30 10:17:09,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:09,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:09,381 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 10:17:09,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:09,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601686748] [2023-08-30 10:17:09,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601686748] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:17:09,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:17:09,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:17:09,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161103323] [2023-08-30 10:17:09,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:17:09,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:17:09,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:09,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:17:09,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:17:09,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 531 [2023-08-30 10:17:09,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 119 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:09,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:09,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 531 [2023-08-30 10:17:09,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:09,785 INFO L130 PetriNetUnfolder]: 1055/2188 cut-off events. [2023-08-30 10:17:09,786 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:17:09,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4181 conditions, 2188 events. 1055/2188 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 14595 event pairs, 903 based on Foata normal form. 289/1785 useless extension candidates. Maximal degree in co-relation 4065. Up to 1986 conditions per place. [2023-08-30 10:17:09,799 INFO L137 encePairwiseOnDemand]: 495/531 looper letters, 73 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-08-30 10:17:09,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 88 transitions, 334 flow [2023-08-30 10:17:09,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:17:09,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:17:09,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 830 transitions. [2023-08-30 10:17:09,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210295040803515 [2023-08-30 10:17:09,816 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 830 transitions. [2023-08-30 10:17:09,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 830 transitions. [2023-08-30 10:17:09,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:09,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 830 transitions. [2023-08-30 10:17:09,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:09,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:09,833 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:09,835 INFO L175 Difference]: Start difference. First operand has 85 places, 119 transitions, 246 flow. Second operand 3 states and 830 transitions. [2023-08-30 10:17:09,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 88 transitions, 334 flow [2023-08-30 10:17:09,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 88 transitions, 334 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:17:09,841 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 196 flow [2023-08-30 10:17:09,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2023-08-30 10:17:09,847 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 2 predicate places. [2023-08-30 10:17:09,847 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 196 flow [2023-08-30 10:17:09,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:09,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:09,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 10:17:09,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:17:09,849 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:17:09,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:09,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1100841, now seen corresponding path program 1 times [2023-08-30 10:17:09,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:09,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292567215] [2023-08-30 10:17:09,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:09,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:09,899 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 10:17:09,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:09,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292567215] [2023-08-30 10:17:09,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292567215] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:17:09,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:17:09,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:17:09,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441893644] [2023-08-30 10:17:09,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:17:09,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:17:09,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:09,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:17:09,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:17:09,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 531 [2023-08-30 10:17:09,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:09,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:09,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 531 [2023-08-30 10:17:09,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:10,169 INFO L130 PetriNetUnfolder]: 1055/2187 cut-off events. [2023-08-30 10:17:10,169 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:17:10,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4186 conditions, 2187 events. 1055/2187 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 14616 event pairs, 903 based on Foata normal form. 0/1496 useless extension candidates. Maximal degree in co-relation 4174. Up to 1985 conditions per place. [2023-08-30 10:17:10,181 INFO L137 encePairwiseOnDemand]: 529/531 looper letters, 73 selfloop transitions, 1 changer transitions 0/87 dead transitions. [2023-08-30 10:17:10,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 340 flow [2023-08-30 10:17:10,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:17:10,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:17:10,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 794 transitions. [2023-08-30 10:17:10,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49843063402385435 [2023-08-30 10:17:10,184 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 794 transitions. [2023-08-30 10:17:10,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 794 transitions. [2023-08-30 10:17:10,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:10,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 794 transitions. [2023-08-30 10:17:10,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:10,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:10,191 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:10,191 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 196 flow. Second operand 3 states and 794 transitions. [2023-08-30 10:17:10,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 340 flow [2023-08-30 10:17:10,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 87 transitions, 336 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 10:17:10,194 INFO L231 Difference]: Finished difference. Result has 87 places, 87 transitions, 190 flow [2023-08-30 10:17:10,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=87, PETRI_TRANSITIONS=87} [2023-08-30 10:17:10,195 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 2 predicate places. [2023-08-30 10:17:10,196 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 87 transitions, 190 flow [2023-08-30 10:17:10,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:10,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:10,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 10:17:10,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 10:17:10,197 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:17:10,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:10,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1563346380, now seen corresponding path program 1 times [2023-08-30 10:17:10,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:10,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691285300] [2023-08-30 10:17:10,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:10,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:10,264 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 10:17:10,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:10,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691285300] [2023-08-30 10:17:10,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691285300] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:17:10,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067269229] [2023-08-30 10:17:10,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:10,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:10,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:17:10,273 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 10:17:10,296 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 10:17:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:10,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:17:10,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:17:10,431 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 10:17:10,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:17:10,474 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 10:17:10,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067269229] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:17:10,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:17:10,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:17:10,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534920116] [2023-08-30 10:17:10,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:17:10,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:17:10,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:10,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:17:10,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:17:10,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 531 [2023-08-30 10:17:10,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 240.57142857142858) internal successors, (1684), 7 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:10,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:10,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 531 [2023-08-30 10:17:10,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:10,786 INFO L130 PetriNetUnfolder]: 1055/2190 cut-off events. [2023-08-30 10:17:10,786 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:17:10,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4194 conditions, 2190 events. 1055/2190 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 14611 event pairs, 903 based on Foata normal form. 0/1499 useless extension candidates. Maximal degree in co-relation 4185. Up to 1985 conditions per place. [2023-08-30 10:17:10,812 INFO L137 encePairwiseOnDemand]: 528/531 looper letters, 72 selfloop transitions, 5 changer transitions 0/90 dead transitions. [2023-08-30 10:17:10,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 90 transitions, 356 flow [2023-08-30 10:17:10,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:17:10,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:17:10,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1514 transitions. [2023-08-30 10:17:10,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47520401757689895 [2023-08-30 10:17:10,817 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1514 transitions. [2023-08-30 10:17:10,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1514 transitions. [2023-08-30 10:17:10,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:10,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1514 transitions. [2023-08-30 10:17:10,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 252.33333333333334) internal successors, (1514), 6 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:10,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:10,827 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:10,828 INFO L175 Difference]: Start difference. First operand has 87 places, 87 transitions, 190 flow. Second operand 6 states and 1514 transitions. [2023-08-30 10:17:10,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 90 transitions, 356 flow [2023-08-30 10:17:10,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 90 transitions, 355 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:17:10,831 INFO L231 Difference]: Finished difference. Result has 94 places, 90 transitions, 225 flow [2023-08-30 10:17:10,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=225, PETRI_PLACES=94, PETRI_TRANSITIONS=90} [2023-08-30 10:17:10,832 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 9 predicate places. [2023-08-30 10:17:10,832 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 90 transitions, 225 flow [2023-08-30 10:17:10,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 240.57142857142858) internal successors, (1684), 7 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:10,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:10,833 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-30 10:17:10,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 10:17:11,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:11,040 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:17:11,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:11,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1271227380, now seen corresponding path program 2 times [2023-08-30 10:17:11,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:11,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534696144] [2023-08-30 10:17:11,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:11,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:11,122 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 10:17:11,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:11,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534696144] [2023-08-30 10:17:11,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534696144] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:17:11,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:17:11,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:17:11,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890798647] [2023-08-30 10:17:11,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:17:11,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:17:11,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:11,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:17:11,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:17:11,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 531 [2023-08-30 10:17:11,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 90 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:11,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:11,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 531 [2023-08-30 10:17:11,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:11,400 INFO L130 PetriNetUnfolder]: 1010/2088 cut-off events. [2023-08-30 10:17:11,400 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 10:17:11,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3993 conditions, 2088 events. 1010/2088 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14139 event pairs, 400 based on Foata normal form. 0/1479 useless extension candidates. Maximal degree in co-relation 3980. Up to 1836 conditions per place. [2023-08-30 10:17:11,413 INFO L137 encePairwiseOnDemand]: 526/531 looper letters, 96 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2023-08-30 10:17:11,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 111 transitions, 463 flow [2023-08-30 10:17:11,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:17:11,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:17:11,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 817 transitions. [2023-08-30 10:17:11,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128688010043942 [2023-08-30 10:17:11,416 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 817 transitions. [2023-08-30 10:17:11,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 817 transitions. [2023-08-30 10:17:11,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:11,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 817 transitions. [2023-08-30 10:17:11,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.3333333333333) internal successors, (817), 3 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:11,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:11,422 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:11,423 INFO L175 Difference]: Start difference. First operand has 94 places, 90 transitions, 225 flow. Second operand 3 states and 817 transitions. [2023-08-30 10:17:11,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 111 transitions, 463 flow [2023-08-30 10:17:11,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 111 transitions, 449 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 10:17:11,430 INFO L231 Difference]: Finished difference. Result has 94 places, 88 transitions, 215 flow [2023-08-30 10:17:11,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2023-08-30 10:17:11,432 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 9 predicate places. [2023-08-30 10:17:11,432 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 215 flow [2023-08-30 10:17:11,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:11,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:11,433 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:11,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 10:17:11,434 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:17:11,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:11,435 INFO L85 PathProgramCache]: Analyzing trace with hash -436868778, now seen corresponding path program 1 times [2023-08-30 10:17:11,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:11,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11279851] [2023-08-30 10:17:11,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:11,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:11,584 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:17:11,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:11,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11279851] [2023-08-30 10:17:11,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11279851] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:17:11,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936877724] [2023-08-30 10:17:11,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:11,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:11,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:17:11,594 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 10:17:11,621 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 10:17:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:11,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:17:11,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:17:11,705 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:17:11,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:17:11,760 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:17:11,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936877724] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:17:11,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:17:11,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 10:17:11,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231443187] [2023-08-30 10:17:11,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:17:11,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:17:11,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:11,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:17:11,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:17:11,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 531 [2023-08-30 10:17:11,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 215 flow. Second operand has 13 states, 13 states have (on average 240.53846153846155) internal successors, (3127), 13 states have internal predecessors, (3127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:11,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:11,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 531 [2023-08-30 10:17:11,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:12,089 INFO L130 PetriNetUnfolder]: 1010/2064 cut-off events. [2023-08-30 10:17:12,089 INFO L131 PetriNetUnfolder]: For 119/119 co-relation queries the response was YES. [2023-08-30 10:17:12,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4035 conditions, 2064 events. 1010/2064 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 13469 event pairs, 861 based on Foata normal form. 6/1475 useless extension candidates. Maximal degree in co-relation 4021. Up to 1857 conditions per place. [2023-08-30 10:17:12,101 INFO L137 encePairwiseOnDemand]: 528/531 looper letters, 70 selfloop transitions, 11 changer transitions 0/94 dead transitions. [2023-08-30 10:17:12,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 94 transitions, 413 flow [2023-08-30 10:17:12,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:17:12,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:17:12,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2955 transitions. [2023-08-30 10:17:12,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4637476459510358 [2023-08-30 10:17:12,109 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2955 transitions. [2023-08-30 10:17:12,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2955 transitions. [2023-08-30 10:17:12,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:12,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2955 transitions. [2023-08-30 10:17:12,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 246.25) internal successors, (2955), 12 states have internal predecessors, (2955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:12,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 531.0) internal successors, (6903), 13 states have internal predecessors, (6903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:12,126 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 531.0) internal successors, (6903), 13 states have internal predecessors, (6903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:12,127 INFO L175 Difference]: Start difference. First operand has 94 places, 88 transitions, 215 flow. Second operand 12 states and 2955 transitions. [2023-08-30 10:17:12,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 94 transitions, 413 flow [2023-08-30 10:17:12,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 94 transitions, 409 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:17:12,130 INFO L231 Difference]: Finished difference. Result has 109 places, 94 transitions, 295 flow [2023-08-30 10:17:12,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=295, PETRI_PLACES=109, PETRI_TRANSITIONS=94} [2023-08-30 10:17:12,131 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 24 predicate places. [2023-08-30 10:17:12,131 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 94 transitions, 295 flow [2023-08-30 10:17:12,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 240.53846153846155) internal successors, (3127), 13 states have internal predecessors, (3127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:12,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:12,132 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:12,143 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 10:17:12,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:12,338 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:17:12,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:12,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1287089834, now seen corresponding path program 2 times [2023-08-30 10:17:12,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:12,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285088856] [2023-08-30 10:17:12,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:12,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:12,762 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:12,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:12,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285088856] [2023-08-30 10:17:12,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285088856] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:17:12,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:17:12,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:17:12,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938333500] [2023-08-30 10:17:12,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:17:12,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:17:12,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:12,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:17:12,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:17:13,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 531 [2023-08-30 10:17:13,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 94 transitions, 295 flow. Second operand has 7 states, 7 states have (on average 229.42857142857142) internal successors, (1606), 7 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:13,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:13,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 531 [2023-08-30 10:17:13,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:13,817 INFO L130 PetriNetUnfolder]: 1692/3495 cut-off events. [2023-08-30 10:17:13,817 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-08-30 10:17:13,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6906 conditions, 3495 events. 1692/3495 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 24795 event pairs, 233 based on Foata normal form. 0/2472 useless extension candidates. Maximal degree in co-relation 6885. Up to 1897 conditions per place. [2023-08-30 10:17:13,839 INFO L137 encePairwiseOnDemand]: 516/531 looper letters, 214 selfloop transitions, 22 changer transitions 2/251 dead transitions. [2023-08-30 10:17:13,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 251 transitions, 1103 flow [2023-08-30 10:17:13,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:17:13,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:17:13,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1832 transitions. [2023-08-30 10:17:13,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928705945655098 [2023-08-30 10:17:13,845 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1832 transitions. [2023-08-30 10:17:13,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1832 transitions. [2023-08-30 10:17:13,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:13,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1832 transitions. [2023-08-30 10:17:13,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 261.7142857142857) internal successors, (1832), 7 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:13,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 531.0) internal successors, (4248), 8 states have internal predecessors, (4248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:13,856 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 531.0) internal successors, (4248), 8 states have internal predecessors, (4248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:13,856 INFO L175 Difference]: Start difference. First operand has 109 places, 94 transitions, 295 flow. Second operand 7 states and 1832 transitions. [2023-08-30 10:17:13,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 251 transitions, 1103 flow [2023-08-30 10:17:13,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 251 transitions, 1055 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 10:17:13,862 INFO L231 Difference]: Finished difference. Result has 116 places, 114 transitions, 419 flow [2023-08-30 10:17:13,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=419, PETRI_PLACES=116, PETRI_TRANSITIONS=114} [2023-08-30 10:17:13,863 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 31 predicate places. [2023-08-30 10:17:13,863 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 114 transitions, 419 flow [2023-08-30 10:17:13,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 229.42857142857142) internal successors, (1606), 7 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:13,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:13,865 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:13,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 10:17:13,865 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:17:13,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:13,865 INFO L85 PathProgramCache]: Analyzing trace with hash 848727625, now seen corresponding path program 1 times [2023-08-30 10:17:13,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:13,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530898877] [2023-08-30 10:17:13,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:13,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:13,918 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:13,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:13,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530898877] [2023-08-30 10:17:13,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530898877] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:17:13,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348459790] [2023-08-30 10:17:13,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:13,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:13,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:17:13,920 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 10:17:13,948 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 10:17:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:14,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:17:14,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:17:14,052 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:14,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:17:14,071 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:14,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348459790] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:17:14,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:17:14,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-30 10:17:14,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866487612] [2023-08-30 10:17:14,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:17:14,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:17:14,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:14,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:17:14,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:17:14,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 531 [2023-08-30 10:17:14,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 114 transitions, 419 flow. Second operand has 7 states, 7 states have (on average 241.71428571428572) internal successors, (1692), 7 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:14,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:14,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 531 [2023-08-30 10:17:14,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:14,193 INFO L130 PetriNetUnfolder]: 91/274 cut-off events. [2023-08-30 10:17:14,193 INFO L131 PetriNetUnfolder]: For 221/226 co-relation queries the response was YES. [2023-08-30 10:17:14,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 274 events. 91/274 cut-off events. For 221/226 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1014 event pairs, 15 based on Foata normal form. 42/279 useless extension candidates. Maximal degree in co-relation 756. Up to 182 conditions per place. [2023-08-30 10:17:14,195 INFO L137 encePairwiseOnDemand]: 528/531 looper letters, 69 selfloop transitions, 2 changer transitions 2/78 dead transitions. [2023-08-30 10:17:14,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 78 transitions, 460 flow [2023-08-30 10:17:14,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:17:14,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:17:14,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1008 transitions. [2023-08-30 10:17:14,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745762711864407 [2023-08-30 10:17:14,198 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1008 transitions. [2023-08-30 10:17:14,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1008 transitions. [2023-08-30 10:17:14,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:14,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1008 transitions. [2023-08-30 10:17:14,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:14,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 531.0) internal successors, (2655), 5 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:14,205 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 531.0) internal successors, (2655), 5 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:14,205 INFO L175 Difference]: Start difference. First operand has 116 places, 114 transitions, 419 flow. Second operand 4 states and 1008 transitions. [2023-08-30 10:17:14,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 78 transitions, 460 flow [2023-08-30 10:17:14,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 78 transitions, 442 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-30 10:17:14,208 INFO L231 Difference]: Finished difference. Result has 66 places, 50 transitions, 210 flow [2023-08-30 10:17:14,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=66, PETRI_TRANSITIONS=50} [2023-08-30 10:17:14,209 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -19 predicate places. [2023-08-30 10:17:14,209 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 50 transitions, 210 flow [2023-08-30 10:17:14,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 241.71428571428572) internal successors, (1692), 7 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:14,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:14,210 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:14,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 10:17:14,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:14,416 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:17:14,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:14,417 INFO L85 PathProgramCache]: Analyzing trace with hash 57353301, now seen corresponding path program 1 times [2023-08-30 10:17:14,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:14,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445192972] [2023-08-30 10:17:14,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:14,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:14,712 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:14,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:14,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445192972] [2023-08-30 10:17:14,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445192972] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:17:14,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272915256] [2023-08-30 10:17:14,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:14,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:14,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:17:14,715 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 10:17:14,718 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 10:17:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:14,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 10:17:14,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:17:14,876 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 7 treesize of output 6 [2023-08-30 10:17:14,957 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:17:14,957 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 10:17:14,981 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 13 treesize of output 15 [2023-08-30 10:17:15,043 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 13 treesize of output 15 [2023-08-30 10:17:15,056 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:15,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:17:15,150 WARN L839 $PredicateComparison]: unable to prove that (forall ((|t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_221 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_221) |c_~#cache~0.base|) |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 2147483650))) is different from false [2023-08-30 10:17:15,289 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2023-08-30 10:17:15,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272915256] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:17:15,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:17:15,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2023-08-30 10:17:15,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258645834] [2023-08-30 10:17:15,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:17:15,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 10:17:15,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:15,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 10:17:15,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=4, NotChecked=24, Total=210 [2023-08-30 10:17:15,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 531 [2023-08-30 10:17:15,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 50 transitions, 210 flow. Second operand has 15 states, 15 states have (on average 183.4) internal successors, (2751), 15 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:15,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:15,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 531 [2023-08-30 10:17:15,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:15,654 INFO L130 PetriNetUnfolder]: 89/251 cut-off events. [2023-08-30 10:17:15,654 INFO L131 PetriNetUnfolder]: For 233/233 co-relation queries the response was YES. [2023-08-30 10:17:15,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 720 conditions, 251 events. 89/251 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 756 event pairs, 12 based on Foata normal form. 1/215 useless extension candidates. Maximal degree in co-relation 696. Up to 115 conditions per place. [2023-08-30 10:17:15,656 INFO L137 encePairwiseOnDemand]: 523/531 looper letters, 60 selfloop transitions, 8 changer transitions 0/71 dead transitions. [2023-08-30 10:17:15,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 71 transitions, 406 flow [2023-08-30 10:17:15,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:17:15,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:17:15,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1143 transitions. [2023-08-30 10:17:15,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3587570621468927 [2023-08-30 10:17:15,660 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1143 transitions. [2023-08-30 10:17:15,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1143 transitions. [2023-08-30 10:17:15,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:15,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1143 transitions. [2023-08-30 10:17:15,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 190.5) internal successors, (1143), 6 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:15,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:15,682 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:15,682 INFO L175 Difference]: Start difference. First operand has 66 places, 50 transitions, 210 flow. Second operand 6 states and 1143 transitions. [2023-08-30 10:17:15,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 71 transitions, 406 flow [2023-08-30 10:17:15,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 71 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:17:15,684 INFO L231 Difference]: Finished difference. Result has 70 places, 51 transitions, 240 flow [2023-08-30 10:17:15,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=240, PETRI_PLACES=70, PETRI_TRANSITIONS=51} [2023-08-30 10:17:15,686 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -15 predicate places. [2023-08-30 10:17:15,687 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 240 flow [2023-08-30 10:17:15,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 183.4) internal successors, (2751), 15 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:15,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:15,688 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:15,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 10:17:15,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:15,895 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:17:15,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:15,895 INFO L85 PathProgramCache]: Analyzing trace with hash 190474375, now seen corresponding path program 1 times [2023-08-30 10:17:15,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:15,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022003120] [2023-08-30 10:17:15,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:15,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:15,949 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:15,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:15,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022003120] [2023-08-30 10:17:15,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022003120] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:17:15,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:17:15,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:17:15,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851009352] [2023-08-30 10:17:15,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:17:15,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:17:15,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:15,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:17:15,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:17:15,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 531 [2023-08-30 10:17:15,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 51 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:15,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:15,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 531 [2023-08-30 10:17:15,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:16,037 INFO L130 PetriNetUnfolder]: 119/352 cut-off events. [2023-08-30 10:17:16,037 INFO L131 PetriNetUnfolder]: For 316/316 co-relation queries the response was YES. [2023-08-30 10:17:16,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 998 conditions, 352 events. 119/352 cut-off events. For 316/316 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1353 event pairs, 67 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 971. Up to 219 conditions per place. [2023-08-30 10:17:16,039 INFO L137 encePairwiseOnDemand]: 527/531 looper letters, 64 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-08-30 10:17:16,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 71 transitions, 443 flow [2023-08-30 10:17:16,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:17:16,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:17:16,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 767 transitions. [2023-08-30 10:17:16,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2023-08-30 10:17:16,042 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 767 transitions. [2023-08-30 10:17:16,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 767 transitions. [2023-08-30 10:17:16,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:16,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 767 transitions. [2023-08-30 10:17:16,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:16,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:16,046 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:16,046 INFO L175 Difference]: Start difference. First operand has 70 places, 51 transitions, 240 flow. Second operand 3 states and 767 transitions. [2023-08-30 10:17:16,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 71 transitions, 443 flow [2023-08-30 10:17:16,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 71 transitions, 430 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 10:17:16,049 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 243 flow [2023-08-30 10:17:16,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2023-08-30 10:17:16,050 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -15 predicate places. [2023-08-30 10:17:16,050 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 243 flow [2023-08-30 10:17:16,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:16,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:16,050 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:16,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 10:17:16,051 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:17:16,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:16,051 INFO L85 PathProgramCache]: Analyzing trace with hash -752816891, now seen corresponding path program 1 times [2023-08-30 10:17:16,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:16,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144179401] [2023-08-30 10:17:16,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:16,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:16,427 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:16,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:16,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144179401] [2023-08-30 10:17:16,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144179401] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:17:16,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:17:16,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 10:17:16,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680099893] [2023-08-30 10:17:16,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:17:16,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 10:17:16,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:16,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 10:17:16,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-30 10:17:16,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 531 [2023-08-30 10:17:16,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 243 flow. Second operand has 9 states, 9 states have (on average 225.44444444444446) internal successors, (2029), 9 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:16,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:16,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 531 [2023-08-30 10:17:16,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:17,161 INFO L130 PetriNetUnfolder]: 122/387 cut-off events. [2023-08-30 10:17:17,162 INFO L131 PetriNetUnfolder]: For 291/291 co-relation queries the response was YES. [2023-08-30 10:17:17,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1102 conditions, 387 events. 122/387 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1623 event pairs, 2 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 1075. Up to 152 conditions per place. [2023-08-30 10:17:17,164 INFO L137 encePairwiseOnDemand]: 520/531 looper letters, 66 selfloop transitions, 15 changer transitions 0/86 dead transitions. [2023-08-30 10:17:17,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 86 transitions, 516 flow [2023-08-30 10:17:17,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 10:17:17,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 10:17:17,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1858 transitions. [2023-08-30 10:17:17,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4373822975517891 [2023-08-30 10:17:17,170 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1858 transitions. [2023-08-30 10:17:17,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1858 transitions. [2023-08-30 10:17:17,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:17,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1858 transitions. [2023-08-30 10:17:17,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 232.25) internal successors, (1858), 8 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:17,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 531.0) internal successors, (4779), 9 states have internal predecessors, (4779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:17,181 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 531.0) internal successors, (4779), 9 states have internal predecessors, (4779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:17,181 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 243 flow. Second operand 8 states and 1858 transitions. [2023-08-30 10:17:17,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 86 transitions, 516 flow [2023-08-30 10:17:17,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 86 transitions, 512 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:17:17,185 INFO L231 Difference]: Finished difference. Result has 80 places, 58 transitions, 325 flow [2023-08-30 10:17:17,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=325, PETRI_PLACES=80, PETRI_TRANSITIONS=58} [2023-08-30 10:17:17,186 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -5 predicate places. [2023-08-30 10:17:17,187 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 58 transitions, 325 flow [2023-08-30 10:17:17,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 225.44444444444446) internal successors, (2029), 9 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:17,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:17,188 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:17,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 10:17:17,188 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:17:17,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:17,188 INFO L85 PathProgramCache]: Analyzing trace with hash -752816841, now seen corresponding path program 1 times [2023-08-30 10:17:17,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:17,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904886026] [2023-08-30 10:17:17,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:17,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:17,321 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:17,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:17,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904886026] [2023-08-30 10:17:17,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904886026] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:17:17,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:17:17,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:17:17,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459566064] [2023-08-30 10:17:17,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:17:17,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:17:17,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:17,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:17:17,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:17:17,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 531 [2023-08-30 10:17:17,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 58 transitions, 325 flow. Second operand has 4 states, 4 states have (on average 233.25) internal successors, (933), 4 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:17,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:17,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 531 [2023-08-30 10:17:17,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:17,501 INFO L130 PetriNetUnfolder]: 118/411 cut-off events. [2023-08-30 10:17:17,501 INFO L131 PetriNetUnfolder]: For 658/666 co-relation queries the response was YES. [2023-08-30 10:17:17,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1314 conditions, 411 events. 118/411 cut-off events. For 658/666 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1862 event pairs, 25 based on Foata normal form. 14/392 useless extension candidates. Maximal degree in co-relation 1282. Up to 154 conditions per place. [2023-08-30 10:17:17,505 INFO L137 encePairwiseOnDemand]: 521/531 looper letters, 51 selfloop transitions, 21 changer transitions 0/77 dead transitions. [2023-08-30 10:17:17,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 77 transitions, 565 flow [2023-08-30 10:17:17,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:17:17,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:17:17,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1194 transitions. [2023-08-30 10:17:17,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497175141242938 [2023-08-30 10:17:17,508 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1194 transitions. [2023-08-30 10:17:17,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1194 transitions. [2023-08-30 10:17:17,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:17,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1194 transitions. [2023-08-30 10:17:17,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 238.8) internal successors, (1194), 5 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:17,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 531.0) internal successors, (3186), 6 states have internal predecessors, (3186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:17,516 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 531.0) internal successors, (3186), 6 states have internal predecessors, (3186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:17,516 INFO L175 Difference]: Start difference. First operand has 80 places, 58 transitions, 325 flow. Second operand 5 states and 1194 transitions. [2023-08-30 10:17:17,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 77 transitions, 565 flow [2023-08-30 10:17:17,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 77 transitions, 526 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-30 10:17:17,521 INFO L231 Difference]: Finished difference. Result has 83 places, 67 transitions, 443 flow [2023-08-30 10:17:17,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=443, PETRI_PLACES=83, PETRI_TRANSITIONS=67} [2023-08-30 10:17:17,522 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -2 predicate places. [2023-08-30 10:17:17,522 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 67 transitions, 443 flow [2023-08-30 10:17:17,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.25) internal successors, (933), 4 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:17,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:17,522 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:17,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 10:17:17,523 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:17:17,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:17,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1940629688, now seen corresponding path program 1 times [2023-08-30 10:17:17,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:17,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358496768] [2023-08-30 10:17:17,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:17,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:17,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:17,919 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:17,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:17,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358496768] [2023-08-30 10:17:17,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358496768] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:17:17,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144549339] [2023-08-30 10:17:17,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:17,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:17,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:17:17,921 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 10:17:17,947 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 10:17:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:18,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 10:17:18,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:17:18,046 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 7 treesize of output 6 [2023-08-30 10:17:18,121 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:17:18,121 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 10:17:18,148 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 13 treesize of output 15 [2023-08-30 10:17:18,242 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 27 treesize of output 20 [2023-08-30 10:17:18,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:17:18,330 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:18,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:17:18,390 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_403 (Array Int Int)) (v_ArrVal_402 Int)) (or (< v_ArrVal_402 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_#t~post35#1| 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (select |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_402)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_403) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648)))) is different from false [2023-08-30 10:17:18,407 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_403 (Array Int Int)) (|t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_402 Int)) (let ((.cse0 (select |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (or (< v_ArrVal_402 (+ (select .cse0 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store .cse0 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_402)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_403) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648))))) is different from false [2023-08-30 10:17:18,452 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_403 (Array Int Int)) (|t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_402 Int)) (let ((.cse0 (select |c_#memory_int| |c_~#cache~0.base|))) (or (< v_ArrVal_402 (+ (select .cse0 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#cache~0.base| (store .cse0 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_402)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_403) |c_~#cache~0.base|) |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648))))) is different from false [2023-08-30 10:17:18,493 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_403 (Array Int Int)) (|t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_400 (Array Int Int)) (v_ArrVal_402 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_400))) (let ((.cse1 (select .cse0 |c_~#cache~0.base|))) (or (< 0 (+ (select (select (store (store .cse0 |c_~#cache~0.base| (store .cse1 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_402)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_403) |c_~#cache~0.base|) |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648)) (< v_ArrVal_402 (+ (select .cse1 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 1)))))) is different from false [2023-08-30 10:17:18,768 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2023-08-30 10:17:18,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144549339] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:17:18,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:17:18,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 20 [2023-08-30 10:17:18,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506446585] [2023-08-30 10:17:18,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:17:18,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-30 10:17:18,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:18,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-30 10:17:18,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=248, Unknown=4, NotChecked=140, Total=462 [2023-08-30 10:17:18,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 531 [2023-08-30 10:17:18,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 67 transitions, 443 flow. Second operand has 22 states, 22 states have (on average 177.1818181818182) internal successors, (3898), 22 states have internal predecessors, (3898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:18,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:18,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 531 [2023-08-30 10:17:18,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:19,564 INFO L130 PetriNetUnfolder]: 129/432 cut-off events. [2023-08-30 10:17:19,565 INFO L131 PetriNetUnfolder]: For 950/950 co-relation queries the response was YES. [2023-08-30 10:17:19,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1565 conditions, 432 events. 129/432 cut-off events. For 950/950 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1935 event pairs, 26 based on Foata normal form. 4/399 useless extension candidates. Maximal degree in co-relation 1532. Up to 143 conditions per place. [2023-08-30 10:17:19,568 INFO L137 encePairwiseOnDemand]: 520/531 looper letters, 78 selfloop transitions, 19 changer transitions 0/100 dead transitions. [2023-08-30 10:17:19,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 100 transitions, 768 flow [2023-08-30 10:17:19,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:17:19,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:17:19,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1822 transitions. [2023-08-30 10:17:19,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3431261770244821 [2023-08-30 10:17:19,574 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1822 transitions. [2023-08-30 10:17:19,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1822 transitions. [2023-08-30 10:17:19,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:19,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1822 transitions. [2023-08-30 10:17:19,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 182.2) internal successors, (1822), 10 states have internal predecessors, (1822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:19,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 531.0) internal successors, (5841), 11 states have internal predecessors, (5841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:19,586 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 531.0) internal successors, (5841), 11 states have internal predecessors, (5841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:19,586 INFO L175 Difference]: Start difference. First operand has 83 places, 67 transitions, 443 flow. Second operand 10 states and 1822 transitions. [2023-08-30 10:17:19,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 100 transitions, 768 flow [2023-08-30 10:17:19,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 100 transitions, 748 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-08-30 10:17:19,593 INFO L231 Difference]: Finished difference. Result has 96 places, 71 transitions, 528 flow [2023-08-30 10:17:19,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=528, PETRI_PLACES=96, PETRI_TRANSITIONS=71} [2023-08-30 10:17:19,594 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 11 predicate places. [2023-08-30 10:17:19,594 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 71 transitions, 528 flow [2023-08-30 10:17:19,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 177.1818181818182) internal successors, (3898), 22 states have internal predecessors, (3898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:19,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:19,595 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:19,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 10:17:19,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-30 10:17:19,802 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:17:19,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:19,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1940629638, now seen corresponding path program 1 times [2023-08-30 10:17:19,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:19,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290641471] [2023-08-30 10:17:19,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:19,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:20,332 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:20,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:20,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290641471] [2023-08-30 10:17:20,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290641471] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:17:20,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511196334] [2023-08-30 10:17:20,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:20,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:20,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:17:20,337 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 10:17:20,340 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 10:17:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:20,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 10:17:20,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:17:20,494 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:17:20,495 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 10:17:20,571 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 10:17:20,608 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 10:17:20,624 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:20,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:17:20,643 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_480 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_480) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 2147483649)) is different from false [2023-08-30 10:17:20,655 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:17:20,656 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 10:17:20,659 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 31 treesize of output 23 [2023-08-30 10:17:20,747 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2023-08-30 10:17:20,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511196334] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:17:20,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:17:20,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 20 [2023-08-30 10:17:20,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547665047] [2023-08-30 10:17:20,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:17:20,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-30 10:17:20,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:20,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-30 10:17:20,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=363, Unknown=1, NotChecked=38, Total=462 [2023-08-30 10:17:20,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 531 [2023-08-30 10:17:20,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 71 transitions, 528 flow. Second operand has 22 states, 22 states have (on average 185.04545454545453) internal successors, (4071), 22 states have internal predecessors, (4071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:20,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:20,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 531 [2023-08-30 10:17:20,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:21,662 INFO L130 PetriNetUnfolder]: 140/492 cut-off events. [2023-08-30 10:17:21,663 INFO L131 PetriNetUnfolder]: For 1423/1423 co-relation queries the response was YES. [2023-08-30 10:17:21,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1874 conditions, 492 events. 140/492 cut-off events. For 1423/1423 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2381 event pairs, 34 based on Foata normal form. 4/458 useless extension candidates. Maximal degree in co-relation 1835. Up to 166 conditions per place. [2023-08-30 10:17:21,666 INFO L137 encePairwiseOnDemand]: 518/531 looper letters, 90 selfloop transitions, 37 changer transitions 0/131 dead transitions. [2023-08-30 10:17:21,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 131 transitions, 1166 flow [2023-08-30 10:17:21,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 10:17:21,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 10:17:21,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3382 transitions. [2023-08-30 10:17:21,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35383971542163634 [2023-08-30 10:17:21,676 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3382 transitions. [2023-08-30 10:17:21,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3382 transitions. [2023-08-30 10:17:21,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:21,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3382 transitions. [2023-08-30 10:17:21,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 187.88888888888889) internal successors, (3382), 18 states have internal predecessors, (3382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:21,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 531.0) internal successors, (10089), 19 states have internal predecessors, (10089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:21,697 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 531.0) internal successors, (10089), 19 states have internal predecessors, (10089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:21,697 INFO L175 Difference]: Start difference. First operand has 96 places, 71 transitions, 528 flow. Second operand 18 states and 3382 transitions. [2023-08-30 10:17:21,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 131 transitions, 1166 flow [2023-08-30 10:17:21,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 131 transitions, 1114 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-08-30 10:17:21,705 INFO L231 Difference]: Finished difference. Result has 113 places, 91 transitions, 785 flow [2023-08-30 10:17:21,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=785, PETRI_PLACES=113, PETRI_TRANSITIONS=91} [2023-08-30 10:17:21,706 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 28 predicate places. [2023-08-30 10:17:21,706 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 91 transitions, 785 flow [2023-08-30 10:17:21,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 185.04545454545453) internal successors, (4071), 22 states have internal predecessors, (4071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:21,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:21,708 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:21,714 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 10:17:21,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:21,914 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:17:21,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:21,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1862473429, now seen corresponding path program 1 times [2023-08-30 10:17:21,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:21,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450144396] [2023-08-30 10:17:21,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:21,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:21,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:21,968 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:21,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:21,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450144396] [2023-08-30 10:17:21,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450144396] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:17:21,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:17:21,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:17:21,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878635006] [2023-08-30 10:17:21,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:17:21,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:17:21,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:21,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:17:21,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:17:21,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 531 [2023-08-30 10:17:21,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 91 transitions, 785 flow. Second operand has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:21,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:21,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 531 [2023-08-30 10:17:21,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:22,066 INFO L130 PetriNetUnfolder]: 127/468 cut-off events. [2023-08-30 10:17:22,066 INFO L131 PetriNetUnfolder]: For 1650/1676 co-relation queries the response was YES. [2023-08-30 10:17:22,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1985 conditions, 468 events. 127/468 cut-off events. For 1650/1676 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2318 event pairs, 43 based on Foata normal form. 6/447 useless extension candidates. Maximal degree in co-relation 1939. Up to 364 conditions per place. [2023-08-30 10:17:22,070 INFO L137 encePairwiseOnDemand]: 529/531 looper letters, 85 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2023-08-30 10:17:22,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 92 transitions, 972 flow [2023-08-30 10:17:22,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:17:22,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:17:22,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 748 transitions. [2023-08-30 10:17:22,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46955430006277465 [2023-08-30 10:17:22,074 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 748 transitions. [2023-08-30 10:17:22,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 748 transitions. [2023-08-30 10:17:22,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:22,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 748 transitions. [2023-08-30 10:17:22,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 249.33333333333334) internal successors, (748), 3 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:22,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:22,078 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:22,078 INFO L175 Difference]: Start difference. First operand has 113 places, 91 transitions, 785 flow. Second operand 3 states and 748 transitions. [2023-08-30 10:17:22,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 92 transitions, 972 flow [2023-08-30 10:17:22,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 92 transitions, 929 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-30 10:17:22,089 INFO L231 Difference]: Finished difference. Result has 108 places, 90 transitions, 742 flow [2023-08-30 10:17:22,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=742, PETRI_PLACES=108, PETRI_TRANSITIONS=90} [2023-08-30 10:17:22,090 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 23 predicate places. [2023-08-30 10:17:22,090 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 90 transitions, 742 flow [2023-08-30 10:17:22,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:22,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:22,091 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:22,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 10:17:22,091 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:17:22,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:22,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1862473590, now seen corresponding path program 1 times [2023-08-30 10:17:22,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:22,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111791268] [2023-08-30 10:17:22,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:22,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:22,149 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:17:22,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:22,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111791268] [2023-08-30 10:17:22,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111791268] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:17:22,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:17:22,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:17:22,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403212955] [2023-08-30 10:17:22,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:17:22,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:17:22,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:22,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:17:22,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:17:22,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 531 [2023-08-30 10:17:22,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 90 transitions, 742 flow. Second operand has 3 states, 3 states have (on average 245.66666666666666) internal successors, (737), 3 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:22,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:22,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 531 [2023-08-30 10:17:22,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:22,241 INFO L130 PetriNetUnfolder]: 121/448 cut-off events. [2023-08-30 10:17:22,241 INFO L131 PetriNetUnfolder]: For 1497/1531 co-relation queries the response was YES. [2023-08-30 10:17:22,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1875 conditions, 448 events. 121/448 cut-off events. For 1497/1531 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2174 event pairs, 30 based on Foata normal form. 9/441 useless extension candidates. Maximal degree in co-relation 1831. Up to 318 conditions per place. [2023-08-30 10:17:22,245 INFO L137 encePairwiseOnDemand]: 527/531 looper letters, 79 selfloop transitions, 12 changer transitions 0/96 dead transitions. [2023-08-30 10:17:22,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 96 transitions, 986 flow [2023-08-30 10:17:22,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:17:22,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:17:22,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 745 transitions. [2023-08-30 10:17:22,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46767106089139987 [2023-08-30 10:17:22,248 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 745 transitions. [2023-08-30 10:17:22,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 745 transitions. [2023-08-30 10:17:22,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:22,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 745 transitions. [2023-08-30 10:17:22,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.33333333333334) internal successors, (745), 3 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:22,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:22,253 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:22,253 INFO L175 Difference]: Start difference. First operand has 108 places, 90 transitions, 742 flow. Second operand 3 states and 745 transitions. [2023-08-30 10:17:22,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 96 transitions, 986 flow [2023-08-30 10:17:22,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 96 transitions, 984 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:17:22,263 INFO L231 Difference]: Finished difference. Result has 108 places, 89 transitions, 760 flow [2023-08-30 10:17:22,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=760, PETRI_PLACES=108, PETRI_TRANSITIONS=89} [2023-08-30 10:17:22,264 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 23 predicate places. [2023-08-30 10:17:22,264 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 89 transitions, 760 flow [2023-08-30 10:17:22,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.66666666666666) internal successors, (737), 3 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:22,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:22,265 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:22,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 10:17:22,265 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:17:22,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:22,266 INFO L85 PathProgramCache]: Analyzing trace with hash -965655586, now seen corresponding path program 1 times [2023-08-30 10:17:22,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:22,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144794219] [2023-08-30 10:17:22,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:22,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:23,214 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:23,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:23,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144794219] [2023-08-30 10:17:23,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144794219] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:17:23,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777154402] [2023-08-30 10:17:23,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:23,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:23,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:17:23,217 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 10:17:23,220 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 10:17:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:23,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-30 10:17:23,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:17:23,339 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 7 treesize of output 6 [2023-08-30 10:17:23,405 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:17:23,406 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 10:17:23,426 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 13 treesize of output 15 [2023-08-30 10:17:23,504 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 24 treesize of output 17 [2023-08-30 10:17:23,558 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 32 treesize of output 25 [2023-08-30 10:17:23,606 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:17:23,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:17:23,797 WARN L839 $PredicateComparison]: unable to prove that (forall ((|t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_654 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_654) |c_~#cache~0.base|) |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|)))) is different from false [2023-08-30 10:17:23,901 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:17:23,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777154402] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:17:23,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:17:23,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 25 [2023-08-30 10:17:23,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671493764] [2023-08-30 10:17:23,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:17:23,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-30 10:17:23,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:23,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-30 10:17:23,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=510, Unknown=1, NotChecked=48, Total=702 [2023-08-30 10:17:24,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 531 [2023-08-30 10:17:24,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 89 transitions, 760 flow. Second operand has 27 states, 27 states have (on average 183.22222222222223) internal successors, (4947), 27 states have internal predecessors, (4947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:24,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:24,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 531 [2023-08-30 10:17:24,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:25,415 INFO L130 PetriNetUnfolder]: 126/468 cut-off events. [2023-08-30 10:17:25,416 INFO L131 PetriNetUnfolder]: For 1590/1590 co-relation queries the response was YES. [2023-08-30 10:17:25,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1980 conditions, 468 events. 126/468 cut-off events. For 1590/1590 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2287 event pairs, 18 based on Foata normal form. 9/462 useless extension candidates. Maximal degree in co-relation 1936. Up to 111 conditions per place. [2023-08-30 10:17:25,419 INFO L137 encePairwiseOnDemand]: 516/531 looper letters, 77 selfloop transitions, 42 changer transitions 15/138 dead transitions. [2023-08-30 10:17:25,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 138 transitions, 1339 flow [2023-08-30 10:17:25,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 10:17:25,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 10:17:25,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2984 transitions. [2023-08-30 10:17:25,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3512241054613936 [2023-08-30 10:17:25,429 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2984 transitions. [2023-08-30 10:17:25,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2984 transitions. [2023-08-30 10:17:25,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:25,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2984 transitions. [2023-08-30 10:17:25,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 186.5) internal successors, (2984), 16 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:25,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 531.0) internal successors, (9027), 17 states have internal predecessors, (9027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:25,454 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 531.0) internal successors, (9027), 17 states have internal predecessors, (9027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:25,455 INFO L175 Difference]: Start difference. First operand has 108 places, 89 transitions, 760 flow. Second operand 16 states and 2984 transitions. [2023-08-30 10:17:25,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 138 transitions, 1339 flow [2023-08-30 10:17:25,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 138 transitions, 1310 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 10:17:25,467 INFO L231 Difference]: Finished difference. Result has 129 places, 89 transitions, 884 flow [2023-08-30 10:17:25,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=884, PETRI_PLACES=129, PETRI_TRANSITIONS=89} [2023-08-30 10:17:25,469 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 44 predicate places. [2023-08-30 10:17:25,469 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 89 transitions, 884 flow [2023-08-30 10:17:25,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 183.22222222222223) internal successors, (4947), 27 states have internal predecessors, (4947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:25,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:25,471 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:25,477 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 10:17:25,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:25,677 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:17:25,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:25,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1815185527, now seen corresponding path program 1 times [2023-08-30 10:17:25,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:25,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774390844] [2023-08-30 10:17:25,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:25,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:26,123 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:26,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:26,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774390844] [2023-08-30 10:17:26,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774390844] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:17:26,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456012373] [2023-08-30 10:17:26,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:26,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:26,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:17:26,129 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 10:17:26,132 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 10:17:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:26,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-30 10:17:26,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:17:26,269 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 7 treesize of output 6 [2023-08-30 10:17:26,318 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:17:26,319 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 10:17:26,336 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 13 treesize of output 15 [2023-08-30 10:17:26,442 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 24 treesize of output 17 [2023-08-30 10:17:26,479 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 21 treesize of output 23 [2023-08-30 10:17:26,526 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 32 treesize of output 25 [2023-08-30 10:17:26,583 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:17:26,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:17:26,692 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_757 (Array Int Int)) (|v_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset_82| Int)) (< 0 (+ 2147483650 (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_757))) (store .cse0 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (let ((.cse1 (select .cse0 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (store .cse1 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| (+ (- 1) (select .cse1 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|)))))) |c_~#cache~0.base|) |v_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset_82|)))) is different from false [2023-08-30 10:17:26,787 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_757 (Array Int Int)) (|v_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset_82| Int) (|t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| Int)) (< 0 (+ 2147483650 (select (select (let ((.cse0 (store (store |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (let ((.cse2 (select |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (store .cse2 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| (+ (select .cse2 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 1)))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_757))) (store .cse0 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (let ((.cse1 (select .cse0 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (store .cse1 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| (+ (- 1) (select .cse1 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|)))))) |c_~#cache~0.base|) |v_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset_82|)))) is different from false [2023-08-30 10:17:27,025 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 5 not checked. [2023-08-30 10:17:27,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456012373] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:17:27,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:17:27,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 25 [2023-08-30 10:17:27,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51085922] [2023-08-30 10:17:27,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:17:27,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-30 10:17:27,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:27,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-30 10:17:27,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=473, Unknown=8, NotChecked=94, Total=702 [2023-08-30 10:17:27,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 531 [2023-08-30 10:17:27,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 89 transitions, 884 flow. Second operand has 27 states, 27 states have (on average 188.37037037037038) internal successors, (5086), 27 states have internal predecessors, (5086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:27,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:27,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 531 [2023-08-30 10:17:27,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:28,653 INFO L130 PetriNetUnfolder]: 102/404 cut-off events. [2023-08-30 10:17:28,653 INFO L131 PetriNetUnfolder]: For 2046/2046 co-relation queries the response was YES. [2023-08-30 10:17:28,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1918 conditions, 404 events. 102/404 cut-off events. For 2046/2046 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1903 event pairs, 6 based on Foata normal form. 4/396 useless extension candidates. Maximal degree in co-relation 1872. Up to 95 conditions per place. [2023-08-30 10:17:28,655 INFO L137 encePairwiseOnDemand]: 517/531 looper letters, 0 selfloop transitions, 0 changer transitions 113/113 dead transitions. [2023-08-30 10:17:28,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 113 transitions, 1275 flow [2023-08-30 10:17:28,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 10:17:28,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 10:17:28,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3414 transitions. [2023-08-30 10:17:28,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.357187696170747 [2023-08-30 10:17:28,662 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3414 transitions. [2023-08-30 10:17:28,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3414 transitions. [2023-08-30 10:17:28,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:28,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3414 transitions. [2023-08-30 10:17:28,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 189.66666666666666) internal successors, (3414), 18 states have internal predecessors, (3414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:28,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 531.0) internal successors, (10089), 19 states have internal predecessors, (10089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:28,678 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 531.0) internal successors, (10089), 19 states have internal predecessors, (10089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:28,678 INFO L175 Difference]: Start difference. First operand has 129 places, 89 transitions, 884 flow. Second operand 18 states and 3414 transitions. [2023-08-30 10:17:28,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 113 transitions, 1275 flow [2023-08-30 10:17:28,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 113 transitions, 1141 flow, removed 21 selfloop flow, removed 17 redundant places. [2023-08-30 10:17:28,688 INFO L231 Difference]: Finished difference. Result has 125 places, 0 transitions, 0 flow [2023-08-30 10:17:28,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=0, PETRI_PLACES=125, PETRI_TRANSITIONS=0} [2023-08-30 10:17:28,689 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 40 predicate places. [2023-08-30 10:17:28,689 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 0 transitions, 0 flow [2023-08-30 10:17:28,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 188.37037037037038) internal successors, (5086), 27 states have internal predecessors, (5086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:28,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 28 remaining) [2023-08-30 10:17:28,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 28 remaining) [2023-08-30 10:17:28,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 28 remaining) [2023-08-30 10:17:28,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 28 remaining) [2023-08-30 10:17:28,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 28 remaining) [2023-08-30 10:17:28,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 28 remaining) [2023-08-30 10:17:28,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 28 remaining) [2023-08-30 10:17:28,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 28 remaining) [2023-08-30 10:17:28,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 28 remaining) [2023-08-30 10:17:28,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 28 remaining) [2023-08-30 10:17:28,695 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 28 remaining) [2023-08-30 10:17:28,695 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 28 remaining) [2023-08-30 10:17:28,695 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 28 remaining) [2023-08-30 10:17:28,695 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 28 remaining) [2023-08-30 10:17:28,695 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 28 remaining) [2023-08-30 10:17:28,695 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 28 remaining) [2023-08-30 10:17:28,695 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 28 remaining) [2023-08-30 10:17:28,696 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 28 remaining) [2023-08-30 10:17:28,696 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 28 remaining) [2023-08-30 10:17:28,696 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 28 remaining) [2023-08-30 10:17:28,696 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 28 remaining) [2023-08-30 10:17:28,696 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 28 remaining) [2023-08-30 10:17:28,696 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 28 remaining) [2023-08-30 10:17:28,697 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 28 remaining) [2023-08-30 10:17:28,697 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 28 remaining) [2023-08-30 10:17:28,697 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 28 remaining) [2023-08-30 10:17:28,697 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 28 remaining) [2023-08-30 10:17:28,697 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 28 remaining) [2023-08-30 10:17:28,707 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 10:17:28,903 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,SelfDestructingSolverStorable16 [2023-08-30 10:17:28,904 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:28,906 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,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 10:17:28,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 287 transitions, 582 flow [2023-08-30 10:17:28,937 INFO L130 PetriNetUnfolder]: 73/440 cut-off events. [2023-08-30 10:17:28,938 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:17:28,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 440 events. 73/440 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2094 event pairs, 0 based on Foata normal form. 0/332 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2023-08-30 10:17:28,940 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 287 transitions, 582 flow [2023-08-30 10:17:28,942 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 276 transitions, 557 flow [2023-08-30 10:17:28,943 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:17:28,943 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 235 places, 276 transitions, 557 flow [2023-08-30 10:17:28,943 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 235 places, 276 transitions, 557 flow [2023-08-30 10:17:28,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 276 transitions, 557 flow [2023-08-30 10:17:28,967 INFO L130 PetriNetUnfolder]: 72/429 cut-off events. [2023-08-30 10:17:28,967 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:17:28,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 429 events. 72/429 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2007 event pairs, 0 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2023-08-30 10:17:28,980 INFO L119 LiptonReduction]: Number of co-enabled transitions 26080 [2023-08-30 10:17:31,978 INFO L134 LiptonReduction]: Checked pairs total: 44522 [2023-08-30 10:17:31,978 INFO L136 LiptonReduction]: Total number of compositions: 235 [2023-08-30 10:17:31,979 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:17:31,980 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;@480b8306, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:17:31,980 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:17:31,983 INFO L130 PetriNetUnfolder]: 15/57 cut-off events. [2023-08-30 10:17:31,984 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:17:31,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:31,984 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-30 10:17:31,984 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:17:31,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:31,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1967240035, now seen corresponding path program 1 times [2023-08-30 10:17:31,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:31,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781324660] [2023-08-30 10:17:31,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:31,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:32,001 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 10:17:32,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:32,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781324660] [2023-08-30 10:17:32,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781324660] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:17:32,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:17:32,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:17:32,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931420727] [2023-08-30 10:17:32,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:17:32,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:17:32,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:32,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:17:32,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:17:32,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 522 [2023-08-30 10:17:32,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 114 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:32,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:32,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 522 [2023-08-30 10:17:32,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:32,184 INFO L130 PetriNetUnfolder]: 1055/2184 cut-off events. [2023-08-30 10:17:32,185 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:17:32,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4172 conditions, 2184 events. 1055/2184 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 14598 event pairs, 903 based on Foata normal form. 289/1783 useless extension candidates. Maximal degree in co-relation 4065. Up to 1982 conditions per place. [2023-08-30 10:17:32,189 INFO L137 encePairwiseOnDemand]: 488/522 looper letters, 30 selfloop transitions, 2 changer transitions 47/84 dead transitions. [2023-08-30 10:17:32,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 84 transitions, 315 flow [2023-08-30 10:17:32,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:17:32,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:17:32,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 823 transitions. [2023-08-30 10:17:32,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255427841634738 [2023-08-30 10:17:32,192 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 823 transitions. [2023-08-30 10:17:32,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 823 transitions. [2023-08-30 10:17:32,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:32,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 823 transitions. [2023-08-30 10:17:32,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:32,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:32,195 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:32,195 INFO L175 Difference]: Start difference. First operand has 80 places, 114 transitions, 233 flow. Second operand 3 states and 823 transitions. [2023-08-30 10:17:32,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 84 transitions, 315 flow [2023-08-30 10:17:32,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 84 transitions, 315 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:17:32,197 INFO L231 Difference]: Finished difference. Result has 83 places, 37 transitions, 89 flow [2023-08-30 10:17:32,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=83, PETRI_TRANSITIONS=37} [2023-08-30 10:17:32,198 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 3 predicate places. [2023-08-30 10:17:32,198 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 37 transitions, 89 flow [2023-08-30 10:17:32,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:32,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:32,198 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:32,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 10:17:32,199 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:17:32,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:32,199 INFO L85 PathProgramCache]: Analyzing trace with hash -2030773322, now seen corresponding path program 1 times [2023-08-30 10:17:32,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:32,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905742428] [2023-08-30 10:17:32,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:32,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:17:32,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:32,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905742428] [2023-08-30 10:17:32,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905742428] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:17:32,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523349478] [2023-08-30 10:17:32,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:32,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:32,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:17:32,229 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 10:17:32,255 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 10:17:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:32,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:17:32,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:17:32,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:17:32,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:17:32,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:17:32,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523349478] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:17:32,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:17:32,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:17:32,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663921262] [2023-08-30 10:17:32,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:17:32,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:17:32,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:32,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:17:32,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:17:32,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 522 [2023-08-30 10:17:32,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 37 transitions, 89 flow. Second operand has 7 states, 7 states have (on average 240.57142857142858) internal successors, (1684), 7 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:32,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:32,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 522 [2023-08-30 10:17:32,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:32,424 INFO L130 PetriNetUnfolder]: 118/277 cut-off events. [2023-08-30 10:17:32,425 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:17:32,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 277 events. 118/277 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1055 event pairs, 105 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 533. Up to 249 conditions per place. [2023-08-30 10:17:32,426 INFO L137 encePairwiseOnDemand]: 519/522 looper letters, 30 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-08-30 10:17:32,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 40 transitions, 171 flow [2023-08-30 10:17:32,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:17:32,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:17:32,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1472 transitions. [2023-08-30 10:17:32,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46998722860791825 [2023-08-30 10:17:32,428 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1472 transitions. [2023-08-30 10:17:32,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1472 transitions. [2023-08-30 10:17:32,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:32,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1472 transitions. [2023-08-30 10:17:32,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 245.33333333333334) internal successors, (1472), 6 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:32,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 522.0) internal successors, (3654), 7 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:32,435 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 522.0) internal successors, (3654), 7 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:32,435 INFO L175 Difference]: Start difference. First operand has 83 places, 37 transitions, 89 flow. Second operand 6 states and 1472 transitions. [2023-08-30 10:17:32,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 40 transitions, 171 flow [2023-08-30 10:17:32,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 40 transitions, 167 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 10:17:32,436 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 121 flow [2023-08-30 10:17:32,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=121, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2023-08-30 10:17:32,437 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -34 predicate places. [2023-08-30 10:17:32,437 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 121 flow [2023-08-30 10:17:32,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 240.57142857142858) internal successors, (1684), 7 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:32,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:32,437 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-30 10:17:32,446 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 10:17:32,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:32,643 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:17:32,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:32,644 INFO L85 PathProgramCache]: Analyzing trace with hash -588074973, now seen corresponding path program 2 times [2023-08-30 10:17:32,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:32,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274858660] [2023-08-30 10:17:32,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:32,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:32,706 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:17:32,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:32,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274858660] [2023-08-30 10:17:32,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274858660] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:17:32,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72343658] [2023-08-30 10:17:32,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:17:32,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:32,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:17:32,708 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 10:17:32,728 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 10:17:32,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:17:32,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:17:32,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:17:32,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:17:32,825 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:17:32,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:17:32,862 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:17:32,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72343658] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:17:32,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:17:32,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 10:17:32,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134531617] [2023-08-30 10:17:32,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:17:32,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:17:32,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:32,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:17:32,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:17:32,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 522 [2023-08-30 10:17:32,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 121 flow. Second operand has 13 states, 13 states have (on average 240.30769230769232) internal successors, (3124), 13 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:32,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:32,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 522 [2023-08-30 10:17:32,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:32,996 INFO L130 PetriNetUnfolder]: 118/283 cut-off events. [2023-08-30 10:17:32,997 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-30 10:17:32,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 283 events. 118/283 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1055 event pairs, 105 based on Foata normal form. 6/180 useless extension candidates. Maximal degree in co-relation 524. Up to 249 conditions per place. [2023-08-30 10:17:32,998 INFO L137 encePairwiseOnDemand]: 519/522 looper letters, 30 selfloop transitions, 11 changer transitions 0/46 dead transitions. [2023-08-30 10:17:32,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 46 transitions, 239 flow [2023-08-30 10:17:32,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:17:32,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:17:33,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2915 transitions. [2023-08-30 10:17:33,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46535759897828866 [2023-08-30 10:17:33,005 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2915 transitions. [2023-08-30 10:17:33,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2915 transitions. [2023-08-30 10:17:33,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:33,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2915 transitions. [2023-08-30 10:17:33,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 242.91666666666666) internal successors, (2915), 12 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:33,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 522.0) internal successors, (6786), 13 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:33,017 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 522.0) internal successors, (6786), 13 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:33,017 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 121 flow. Second operand 12 states and 2915 transitions. [2023-08-30 10:17:33,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 46 transitions, 239 flow [2023-08-30 10:17:33,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 46 transitions, 225 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 10:17:33,019 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 191 flow [2023-08-30 10:17:33,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=191, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2023-08-30 10:17:33,020 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -18 predicate places. [2023-08-30 10:17:33,020 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 191 flow [2023-08-30 10:17:33,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 240.30769230769232) internal successors, (3124), 13 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:33,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:33,021 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-30 10:17:33,026 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 10:17:33,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:33,226 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:17:33,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:33,227 INFO L85 PathProgramCache]: Analyzing trace with hash 498857795, now seen corresponding path program 3 times [2023-08-30 10:17:33,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:33,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57335395] [2023-08-30 10:17:33,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:33,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:17:33,244 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:17:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:17:33,284 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:17:33,296 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:17:33,297 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:17:33,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 10:17:33,297 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-08-30 10:17:33,298 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:17:33,306 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:17:33,306 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 10:17:33,336 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 10:17:33,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 314 places, 369 transitions, 756 flow [2023-08-30 10:17:33,401 INFO L130 PetriNetUnfolder]: 118/711 cut-off events. [2023-08-30 10:17:33,401 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:17:33,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 711 events. 118/711 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3792 event pairs, 0 based on Foata normal form. 0/535 useless extension candidates. Maximal degree in co-relation 442. Up to 12 conditions per place. [2023-08-30 10:17:33,408 INFO L82 GeneralOperation]: Start removeDead. Operand has 314 places, 369 transitions, 756 flow [2023-08-30 10:17:33,413 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 314 places, 369 transitions, 756 flow [2023-08-30 10:17:33,413 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:17:33,413 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 314 places, 369 transitions, 756 flow [2023-08-30 10:17:33,413 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 314 places, 369 transitions, 756 flow [2023-08-30 10:17:33,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 314 places, 369 transitions, 756 flow [2023-08-30 10:17:33,470 INFO L130 PetriNetUnfolder]: 118/711 cut-off events. [2023-08-30 10:17:33,471 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:17:33,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 711 events. 118/711 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3792 event pairs, 0 based on Foata normal form. 0/535 useless extension candidates. Maximal degree in co-relation 442. Up to 12 conditions per place. [2023-08-30 10:17:33,503 INFO L119 LiptonReduction]: Number of co-enabled transitions 68000 [2023-08-30 10:17:37,101 INFO L134 LiptonReduction]: Checked pairs total: 119621 [2023-08-30 10:17:37,101 INFO L136 LiptonReduction]: Total number of compositions: 301 [2023-08-30 10:17:37,102 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:17:37,103 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;@480b8306, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:17:37,103 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2023-08-30 10:17:37,104 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 10:17:37,104 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:17:37,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:37,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 10:17:37,104 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:17:37,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:37,104 INFO L85 PathProgramCache]: Analyzing trace with hash 67010, now seen corresponding path program 1 times [2023-08-30 10:17:37,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:37,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487562446] [2023-08-30 10:17:37,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:37,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:37,123 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 10:17:37,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:37,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487562446] [2023-08-30 10:17:37,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487562446] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:17:37,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:17:37,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:17:37,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126861311] [2023-08-30 10:17:37,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:17:37,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:17:37,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:37,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:17:37,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:17:37,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 670 [2023-08-30 10:17:37,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 160 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 307.6666666666667) internal successors, (923), 3 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:37,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:37,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 670 [2023-08-30 10:17:37,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:41,272 INFO L130 PetriNetUnfolder]: 52323/79072 cut-off events. [2023-08-30 10:17:41,273 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2023-08-30 10:17:41,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154709 conditions, 79072 events. 52323/79072 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 2613. Compared 612009 event pairs, 47170 based on Foata normal form. 9339/61849 useless extension candidates. Maximal degree in co-relation 72853. Up to 75496 conditions per place. [2023-08-30 10:17:41,716 INFO L137 encePairwiseOnDemand]: 624/670 looper letters, 101 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2023-08-30 10:17:41,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 119 transitions, 462 flow [2023-08-30 10:17:41,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:17:41,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:17:41,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1069 transitions. [2023-08-30 10:17:41,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5318407960199005 [2023-08-30 10:17:41,719 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1069 transitions. [2023-08-30 10:17:41,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1069 transitions. [2023-08-30 10:17:41,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:41,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1069 transitions. [2023-08-30 10:17:41,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 356.3333333333333) internal successors, (1069), 3 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:41,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:41,723 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:41,723 INFO L175 Difference]: Start difference. First operand has 114 places, 160 transitions, 338 flow. Second operand 3 states and 1069 transitions. [2023-08-30 10:17:41,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 119 transitions, 462 flow [2023-08-30 10:17:41,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 119 transitions, 462 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:17:41,726 INFO L231 Difference]: Finished difference. Result has 116 places, 119 transitions, 268 flow [2023-08-30 10:17:41,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=116, PETRI_TRANSITIONS=119} [2023-08-30 10:17:41,727 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 2 predicate places. [2023-08-30 10:17:41,727 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 119 transitions, 268 flow [2023-08-30 10:17:41,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 307.6666666666667) internal successors, (923), 3 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:41,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:41,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 10:17:41,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 10:17:41,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:17:41,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:41,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2080863, now seen corresponding path program 1 times [2023-08-30 10:17:41,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:41,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406010127] [2023-08-30 10:17:41,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:41,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:41,744 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 10:17:41,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:41,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406010127] [2023-08-30 10:17:41,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406010127] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:17:41,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:17:41,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:17:41,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910788849] [2023-08-30 10:17:41,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:17:41,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:17:41,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:41,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:17:41,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:17:41,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 670 [2023-08-30 10:17:41,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 119 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:41,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:41,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 670 [2023-08-30 10:17:41,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:45,869 INFO L130 PetriNetUnfolder]: 52323/79071 cut-off events. [2023-08-30 10:17:45,869 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2023-08-30 10:17:45,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154714 conditions, 79071 events. 52323/79071 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 2613. Compared 612378 event pairs, 47170 based on Foata normal form. 0/52510 useless extension candidates. Maximal degree in co-relation 154701. Up to 75495 conditions per place. [2023-08-30 10:17:46,368 INFO L137 encePairwiseOnDemand]: 668/670 looper letters, 101 selfloop transitions, 1 changer transitions 0/118 dead transitions. [2023-08-30 10:17:46,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 118 transitions, 468 flow [2023-08-30 10:17:46,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:17:46,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:17:46,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1023 transitions. [2023-08-30 10:17:46,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508955223880597 [2023-08-30 10:17:46,371 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1023 transitions. [2023-08-30 10:17:46,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1023 transitions. [2023-08-30 10:17:46,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:46,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1023 transitions. [2023-08-30 10:17:46,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 341.0) internal successors, (1023), 3 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:46,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:46,376 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:46,376 INFO L175 Difference]: Start difference. First operand has 116 places, 119 transitions, 268 flow. Second operand 3 states and 1023 transitions. [2023-08-30 10:17:46,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 118 transitions, 468 flow [2023-08-30 10:17:46,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 118 transitions, 464 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 10:17:46,379 INFO L231 Difference]: Finished difference. Result has 116 places, 118 transitions, 262 flow [2023-08-30 10:17:46,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=116, PETRI_TRANSITIONS=118} [2023-08-30 10:17:46,380 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 2 predicate places. [2023-08-30 10:17:46,380 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 118 transitions, 262 flow [2023-08-30 10:17:46,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:46,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:46,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:46,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 10:17:46,381 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:17:46,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:46,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1937904375, now seen corresponding path program 1 times [2023-08-30 10:17:46,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:46,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136546028] [2023-08-30 10:17:46,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:46,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:46,406 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 10:17:46,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:46,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136546028] [2023-08-30 10:17:46,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136546028] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:17:46,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750480494] [2023-08-30 10:17:46,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:46,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:46,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:17:46,409 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 10:17:46,436 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 10:17:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:46,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:17:46,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:17:46,526 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 10:17:46,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:17:46,537 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 10:17:46,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750480494] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:17:46,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:17:46,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:17:46,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166311481] [2023-08-30 10:17:46,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:17:46,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:17:46,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:46,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:17:46,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:17:46,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 670 [2023-08-30 10:17:46,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 118 transitions, 262 flow. Second operand has 7 states, 7 states have (on average 307.57142857142856) internal successors, (2153), 7 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:46,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:46,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 670 [2023-08-30 10:17:46,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:50,938 INFO L130 PetriNetUnfolder]: 52323/79074 cut-off events. [2023-08-30 10:17:50,938 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2023-08-30 10:17:51,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154722 conditions, 79074 events. 52323/79074 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 2614. Compared 612276 event pairs, 47170 based on Foata normal form. 0/52513 useless extension candidates. Maximal degree in co-relation 154712. Up to 75495 conditions per place. [2023-08-30 10:17:51,345 INFO L137 encePairwiseOnDemand]: 667/670 looper letters, 100 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2023-08-30 10:17:51,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 121 transitions, 484 flow [2023-08-30 10:17:51,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:17:51,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:17:51,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1944 transitions. [2023-08-30 10:17:51,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835820895522388 [2023-08-30 10:17:51,354 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1944 transitions. [2023-08-30 10:17:51,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1944 transitions. [2023-08-30 10:17:51,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:51,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1944 transitions. [2023-08-30 10:17:51,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 324.0) internal successors, (1944), 6 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:51,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:51,367 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:51,367 INFO L175 Difference]: Start difference. First operand has 116 places, 118 transitions, 262 flow. Second operand 6 states and 1944 transitions. [2023-08-30 10:17:51,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 121 transitions, 484 flow [2023-08-30 10:17:51,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 121 transitions, 483 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:17:51,370 INFO L231 Difference]: Finished difference. Result has 123 places, 121 transitions, 297 flow [2023-08-30 10:17:51,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=297, PETRI_PLACES=123, PETRI_TRANSITIONS=121} [2023-08-30 10:17:51,371 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 9 predicate places. [2023-08-30 10:17:51,371 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 121 transitions, 297 flow [2023-08-30 10:17:51,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 307.57142857142856) internal successors, (2153), 7 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:51,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:51,372 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:51,380 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 10:17:51,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-30 10:17:51,578 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:17:51,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:51,578 INFO L85 PathProgramCache]: Analyzing trace with hash -2094887398, now seen corresponding path program 2 times [2023-08-30 10:17:51,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:51,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304412155] [2023-08-30 10:17:51,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:51,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:51,605 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 10:17:51,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:51,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304412155] [2023-08-30 10:17:51,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304412155] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:17:51,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:17:51,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:17:51,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504690561] [2023-08-30 10:17:51,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:17:51,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:17:51,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:51,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:17:51,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:17:51,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 670 [2023-08-30 10:17:51,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 121 transitions, 297 flow. Second operand has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:51,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:51,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 670 [2023-08-30 10:17:51,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:56,269 INFO L130 PetriNetUnfolder]: 51964/79351 cut-off events. [2023-08-30 10:17:56,269 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2023-08-30 10:17:56,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154914 conditions, 79351 events. 51964/79351 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 2581. Compared 624219 event pairs, 22836 based on Foata normal form. 0/52773 useless extension candidates. Maximal degree in co-relation 154900. Up to 75338 conditions per place. [2023-08-30 10:17:56,702 INFO L137 encePairwiseOnDemand]: 665/670 looper letters, 129 selfloop transitions, 2 changer transitions 0/147 dead transitions. [2023-08-30 10:17:56,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 147 transitions, 611 flow [2023-08-30 10:17:56,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:17:56,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:17:56,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1051 transitions. [2023-08-30 10:17:56,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228855721393035 [2023-08-30 10:17:56,706 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1051 transitions. [2023-08-30 10:17:56,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1051 transitions. [2023-08-30 10:17:56,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:56,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1051 transitions. [2023-08-30 10:17:56,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 350.3333333333333) internal successors, (1051), 3 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:56,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:56,710 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:56,711 INFO L175 Difference]: Start difference. First operand has 123 places, 121 transitions, 297 flow. Second operand 3 states and 1051 transitions. [2023-08-30 10:17:56,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 147 transitions, 611 flow [2023-08-30 10:17:56,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 147 transitions, 597 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 10:17:56,715 INFO L231 Difference]: Finished difference. Result has 125 places, 122 transitions, 299 flow [2023-08-30 10:17:56,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=299, PETRI_PLACES=125, PETRI_TRANSITIONS=122} [2023-08-30 10:17:56,717 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 11 predicate places. [2023-08-30 10:17:56,717 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 122 transitions, 299 flow [2023-08-30 10:17:56,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:56,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:56,718 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:56,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 10:17:56,719 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:17:56,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:56,719 INFO L85 PathProgramCache]: Analyzing trace with hash -946064420, now seen corresponding path program 1 times [2023-08-30 10:17:56,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:56,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453027884] [2023-08-30 10:17:56,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:56,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:56,771 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:17:56,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:56,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453027884] [2023-08-30 10:17:56,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453027884] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:17:56,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525483817] [2023-08-30 10:17:56,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:56,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:56,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:17:56,774 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 10:17:56,783 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 10:17:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:56,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:17:56,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:17:56,904 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:17:56,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:17:56,947 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:17:56,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525483817] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:17:56,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:17:56,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 10:17:56,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911767387] [2023-08-30 10:17:56,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:17:56,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:17:56,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:56,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:17:56,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:17:56,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 670 [2023-08-30 10:17:56,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 122 transitions, 299 flow. Second operand has 13 states, 13 states have (on average 307.61538461538464) internal successors, (3999), 13 states have internal predecessors, (3999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:56,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:56,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 670 [2023-08-30 10:17:56,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:18:01,881 INFO L130 PetriNetUnfolder]: 52627/79298 cut-off events. [2023-08-30 10:18:01,881 INFO L131 PetriNetUnfolder]: For 1372/1372 co-relation queries the response was YES. [2023-08-30 10:18:02,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157121 conditions, 79298 events. 52627/79298 cut-off events. For 1372/1372 co-relation queries the response was YES. Maximal size of possible extension queue 2566. Compared 609521 event pairs, 47124 based on Foata normal form. 6/53321 useless extension candidates. Maximal degree in co-relation 157106. Up to 75361 conditions per place. [2023-08-30 10:18:02,509 INFO L137 encePairwiseOnDemand]: 667/670 looper letters, 101 selfloop transitions, 11 changer transitions 0/128 dead transitions. [2023-08-30 10:18:02,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 128 transitions, 559 flow [2023-08-30 10:18:02,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:18:02,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:18:02,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3789 transitions. [2023-08-30 10:18:02,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47126865671641793 [2023-08-30 10:18:02,517 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3789 transitions. [2023-08-30 10:18:02,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3789 transitions. [2023-08-30 10:18:02,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:18:02,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3789 transitions. [2023-08-30 10:18:02,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 315.75) internal successors, (3789), 12 states have internal predecessors, (3789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:02,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 670.0) internal successors, (8710), 13 states have internal predecessors, (8710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:02,531 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 670.0) internal successors, (8710), 13 states have internal predecessors, (8710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:02,531 INFO L175 Difference]: Start difference. First operand has 125 places, 122 transitions, 299 flow. Second operand 12 states and 3789 transitions. [2023-08-30 10:18:02,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 128 transitions, 559 flow [2023-08-30 10:18:02,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 128 transitions, 557 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:18:02,536 INFO L231 Difference]: Finished difference. Result has 141 places, 128 transitions, 381 flow [2023-08-30 10:18:02,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=381, PETRI_PLACES=141, PETRI_TRANSITIONS=128} [2023-08-30 10:18:02,537 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 27 predicate places. [2023-08-30 10:18:02,537 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 128 transitions, 381 flow [2023-08-30 10:18:02,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 307.61538461538464) internal successors, (3999), 13 states have internal predecessors, (3999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:02,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:18:02,538 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 10:18:02,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-30 10:18:02,743 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,SelfDestructingSolverStorable25 [2023-08-30 10:18:02,743 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:18:02,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:18:02,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1072809866, now seen corresponding path program 1 times [2023-08-30 10:18:02,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:18:02,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835345768] [2023-08-30 10:18:02,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:02,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:18:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:02,777 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:18:02,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:18:02,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835345768] [2023-08-30 10:18:02,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835345768] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:18:02,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:18:02,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:18:02,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62929977] [2023-08-30 10:18:02,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:18:02,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:18:02,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:18:02,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:18:02,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:18:02,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 670 [2023-08-30 10:18:02,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 128 transitions, 381 flow. Second operand has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:02,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:18:02,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 670 [2023-08-30 10:18:02,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:18:07,594 INFO L130 PetriNetUnfolder]: 50009/78595 cut-off events. [2023-08-30 10:18:07,594 INFO L131 PetriNetUnfolder]: For 742/742 co-relation queries the response was YES. [2023-08-30 10:18:08,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154218 conditions, 78595 events. 50009/78595 cut-off events. For 742/742 co-relation queries the response was YES. Maximal size of possible extension queue 2222. Compared 653049 event pairs, 2666 based on Foata normal form. 0/53840 useless extension candidates. Maximal degree in co-relation 154196. Up to 69200 conditions per place. [2023-08-30 10:18:08,266 INFO L137 encePairwiseOnDemand]: 666/670 looper letters, 155 selfloop transitions, 4 changer transitions 0/175 dead transitions. [2023-08-30 10:18:08,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 175 transitions, 791 flow [2023-08-30 10:18:08,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:18:08,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:18:08,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1067 transitions. [2023-08-30 10:18:08,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5308457711442786 [2023-08-30 10:18:08,269 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1067 transitions. [2023-08-30 10:18:08,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1067 transitions. [2023-08-30 10:18:08,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:18:08,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1067 transitions. [2023-08-30 10:18:08,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 355.6666666666667) internal successors, (1067), 3 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:08,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:08,273 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:08,274 INFO L175 Difference]: Start difference. First operand has 141 places, 128 transitions, 381 flow. Second operand 3 states and 1067 transitions. [2023-08-30 10:18:08,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 175 transitions, 791 flow [2023-08-30 10:18:08,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 175 transitions, 743 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 10:18:08,279 INFO L231 Difference]: Finished difference. Result has 138 places, 128 transitions, 345 flow [2023-08-30 10:18:08,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=345, PETRI_PLACES=138, PETRI_TRANSITIONS=128} [2023-08-30 10:18:08,280 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 24 predicate places. [2023-08-30 10:18:08,280 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 128 transitions, 345 flow [2023-08-30 10:18:08,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:08,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:18:08,281 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:18:08,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-30 10:18:08,281 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:18:08,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:18:08,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1927567791, now seen corresponding path program 1 times [2023-08-30 10:18:08,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:18:08,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082067721] [2023-08-30 10:18:08,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:08,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:18:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:08,434 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:18:08,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:18:08,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082067721] [2023-08-30 10:18:08,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082067721] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:18:08,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:18:08,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:18:08,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105535508] [2023-08-30 10:18:08,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:18:08,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:18:08,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:18:08,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:18:08,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:18:08,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 670 [2023-08-30 10:18:08,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 128 transitions, 345 flow. Second operand has 6 states, 6 states have (on average 295.6666666666667) internal successors, (1774), 6 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:08,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:18:08,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 670 [2023-08-30 10:18:08,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:18:16,991 INFO L130 PetriNetUnfolder]: 90224/136752 cut-off events. [2023-08-30 10:18:16,991 INFO L131 PetriNetUnfolder]: For 10871/10871 co-relation queries the response was YES. [2023-08-30 10:18:17,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276573 conditions, 136752 events. 90224/136752 cut-off events. For 10871/10871 co-relation queries the response was YES. Maximal size of possible extension queue 4246. Compared 1151359 event pairs, 16979 based on Foata normal form. 0/93232 useless extension candidates. Maximal degree in co-relation 276552. Up to 76367 conditions per place. [2023-08-30 10:18:18,008 INFO L137 encePairwiseOnDemand]: 653/670 looper letters, 358 selfloop transitions, 30 changer transitions 0/404 dead transitions. [2023-08-30 10:18:18,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 404 transitions, 1757 flow [2023-08-30 10:18:18,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:18:18,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:18:18,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2439 transitions. [2023-08-30 10:18:18,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.520042643923241 [2023-08-30 10:18:18,012 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2439 transitions. [2023-08-30 10:18:18,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2439 transitions. [2023-08-30 10:18:18,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:18:18,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2439 transitions. [2023-08-30 10:18:18,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 348.42857142857144) internal successors, (2439), 7 states have internal predecessors, (2439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:18,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 670.0) internal successors, (5360), 8 states have internal predecessors, (5360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:18,020 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 670.0) internal successors, (5360), 8 states have internal predecessors, (5360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:18,020 INFO L175 Difference]: Start difference. First operand has 138 places, 128 transitions, 345 flow. Second operand 7 states and 2439 transitions. [2023-08-30 10:18:18,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 404 transitions, 1757 flow [2023-08-30 10:18:18,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 404 transitions, 1744 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:18:18,032 INFO L231 Difference]: Finished difference. Result has 148 places, 157 transitions, 549 flow [2023-08-30 10:18:18,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=549, PETRI_PLACES=148, PETRI_TRANSITIONS=157} [2023-08-30 10:18:18,032 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 34 predicate places. [2023-08-30 10:18:18,033 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 157 transitions, 549 flow [2023-08-30 10:18:18,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 295.6666666666667) internal successors, (1774), 6 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:18,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:18:18,033 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 10:18:18,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-30 10:18:18,034 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:18:18,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:18:18,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1072809938, now seen corresponding path program 1 times [2023-08-30 10:18:18,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:18:18,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465792229] [2023-08-30 10:18:18,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:18,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:18:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:18,070 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:18:18,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:18:18,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465792229] [2023-08-30 10:18:18,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465792229] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:18:18,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:18:18,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:18:18,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566042608] [2023-08-30 10:18:18,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:18:18,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:18:18,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:18:18,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:18:18,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:18:18,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 670 [2023-08-30 10:18:18,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 157 transitions, 549 flow. Second operand has 3 states, 3 states have (on average 310.0) internal successors, (930), 3 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:18,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:18:18,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 670 [2023-08-30 10:18:18,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:18:27,237 INFO L130 PetriNetUnfolder]: 87250/132811 cut-off events. [2023-08-30 10:18:27,237 INFO L131 PetriNetUnfolder]: For 37116/37118 co-relation queries the response was YES. [2023-08-30 10:18:27,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300241 conditions, 132811 events. 87250/132811 cut-off events. For 37116/37118 co-relation queries the response was YES. Maximal size of possible extension queue 4151. Compared 1120350 event pairs, 71713 based on Foata normal form. 1115/97275 useless extension candidates. Maximal degree in co-relation 300213. Up to 127811 conditions per place. [2023-08-30 10:18:28,137 INFO L137 encePairwiseOnDemand]: 668/670 looper letters, 139 selfloop transitions, 1 changer transitions 0/156 dead transitions. [2023-08-30 10:18:28,137 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 156 transitions, 825 flow [2023-08-30 10:18:28,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:18:28,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:18:28,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1021 transitions. [2023-08-30 10:18:28,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079601990049751 [2023-08-30 10:18:28,139 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1021 transitions. [2023-08-30 10:18:28,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1021 transitions. [2023-08-30 10:18:28,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:18:28,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1021 transitions. [2023-08-30 10:18:28,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 340.3333333333333) internal successors, (1021), 3 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:28,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:28,142 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:28,143 INFO L175 Difference]: Start difference. First operand has 148 places, 157 transitions, 549 flow. Second operand 3 states and 1021 transitions. [2023-08-30 10:18:28,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 156 transitions, 825 flow [2023-08-30 10:18:28,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 156 transitions, 825 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:18:28,224 INFO L231 Difference]: Finished difference. Result has 149 places, 156 transitions, 547 flow [2023-08-30 10:18:28,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=547, PETRI_PLACES=149, PETRI_TRANSITIONS=156} [2023-08-30 10:18:28,224 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 35 predicate places. [2023-08-30 10:18:28,225 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 156 transitions, 547 flow [2023-08-30 10:18:28,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.0) internal successors, (930), 3 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:28,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:18:28,225 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:18:28,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-30 10:18:28,226 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:18:28,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:18:28,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1033618994, now seen corresponding path program 1 times [2023-08-30 10:18:28,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:18:28,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046331799] [2023-08-30 10:18:28,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:28,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:18:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:28,266 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:18:28,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:18:28,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046331799] [2023-08-30 10:18:28,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046331799] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:18:28,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:18:28,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:18:28,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258180306] [2023-08-30 10:18:28,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:18:28,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:18:28,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:18:28,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:18:28,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:18:28,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 670 [2023-08-30 10:18:28,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 156 transitions, 547 flow. Second operand has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:28,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:18:28,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 670 [2023-08-30 10:18:28,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:18:45,087 INFO L130 PetriNetUnfolder]: 152668/231101 cut-off events. [2023-08-30 10:18:45,087 INFO L131 PetriNetUnfolder]: For 64429/64458 co-relation queries the response was YES. [2023-08-30 10:18:45,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524422 conditions, 231101 events. 152668/231101 cut-off events. For 64429/64458 co-relation queries the response was YES. Maximal size of possible extension queue 6707. Compared 2040183 event pairs, 95638 based on Foata normal form. 1412/171707 useless extension candidates. Maximal degree in co-relation 524393. Up to 130751 conditions per place. [2023-08-30 10:18:46,701 INFO L137 encePairwiseOnDemand]: 665/670 looper letters, 257 selfloop transitions, 2 changer transitions 0/275 dead transitions. [2023-08-30 10:18:46,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 275 transitions, 1463 flow [2023-08-30 10:18:46,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:18:46,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:18:46,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1113 transitions. [2023-08-30 10:18:46,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5537313432835821 [2023-08-30 10:18:46,703 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1113 transitions. [2023-08-30 10:18:46,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1113 transitions. [2023-08-30 10:18:46,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:18:46,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1113 transitions. [2023-08-30 10:18:46,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 371.0) internal successors, (1113), 3 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:46,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:46,706 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:46,706 INFO L175 Difference]: Start difference. First operand has 149 places, 156 transitions, 547 flow. Second operand 3 states and 1113 transitions. [2023-08-30 10:18:46,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 275 transitions, 1463 flow [2023-08-30 10:18:47,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 275 transitions, 1462 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:18:47,946 INFO L231 Difference]: Finished difference. Result has 151 places, 157 transitions, 562 flow [2023-08-30 10:18:47,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=562, PETRI_PLACES=151, PETRI_TRANSITIONS=157} [2023-08-30 10:18:47,946 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 37 predicate places. [2023-08-30 10:18:47,947 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 157 transitions, 562 flow [2023-08-30 10:18:47,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:47,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:18:47,947 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:18:47,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-30 10:18:47,948 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:18:47,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:18:47,949 INFO L85 PathProgramCache]: Analyzing trace with hash -2052626515, now seen corresponding path program 1 times [2023-08-30 10:18:47,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:18:47,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438901734] [2023-08-30 10:18:47,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:47,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:18:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:47,988 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:18:47,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:18:47,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438901734] [2023-08-30 10:18:47,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438901734] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:18:47,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346674179] [2023-08-30 10:18:47,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:47,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:18:47,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:18:47,993 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 10:18:47,997 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 10:18:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:48,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:18:48,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:18:48,128 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:18:48,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:18:48,141 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:18:48,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346674179] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:18:48,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:18:48,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-30 10:18:48,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376951274] [2023-08-30 10:18:48,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:18:48,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:18:48,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:18:48,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:18:48,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:18:48,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 670 [2023-08-30 10:18:48,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 157 transitions, 562 flow. Second operand has 7 states, 7 states have (on average 308.7142857142857) internal successors, (2161), 7 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:48,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:18:48,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 670 [2023-08-30 10:18:48,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:18:49,488 INFO L130 PetriNetUnfolder]: 10625/18442 cut-off events. [2023-08-30 10:18:49,489 INFO L131 PetriNetUnfolder]: For 13256/13256 co-relation queries the response was YES. [2023-08-30 10:18:49,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53408 conditions, 18442 events. 10625/18442 cut-off events. For 13256/13256 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 141507 event pairs, 697 based on Foata normal form. 2038/16957 useless extension candidates. Maximal degree in co-relation 53378. Up to 12189 conditions per place. [2023-08-30 10:18:49,649 INFO L137 encePairwiseOnDemand]: 667/670 looper letters, 166 selfloop transitions, 3 changer transitions 0/176 dead transitions. [2023-08-30 10:18:49,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 176 transitions, 986 flow [2023-08-30 10:18:49,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:18:49,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:18:49,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1660 transitions. [2023-08-30 10:18:49,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4955223880597015 [2023-08-30 10:18:49,651 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1660 transitions. [2023-08-30 10:18:49,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1660 transitions. [2023-08-30 10:18:49,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:18:49,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1660 transitions. [2023-08-30 10:18:49,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:49,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 670.0) internal successors, (4020), 6 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:49,658 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 670.0) internal successors, (4020), 6 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:49,658 INFO L175 Difference]: Start difference. First operand has 151 places, 157 transitions, 562 flow. Second operand 5 states and 1660 transitions. [2023-08-30 10:18:49,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 176 transitions, 986 flow [2023-08-30 10:18:49,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 176 transitions, 956 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-30 10:18:49,770 INFO L231 Difference]: Finished difference. Result has 101 places, 86 transitions, 330 flow [2023-08-30 10:18:49,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=97, 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=5, PETRI_FLOW=330, PETRI_PLACES=101, PETRI_TRANSITIONS=86} [2023-08-30 10:18:49,770 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -13 predicate places. [2023-08-30 10:18:49,770 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 86 transitions, 330 flow [2023-08-30 10:18:49,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 308.7142857142857) internal successors, (2161), 7 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:49,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:18:49,771 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:18:49,779 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 10:18:49,976 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,SelfDestructingSolverStorable30 [2023-08-30 10:18:49,977 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:18:49,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:18:49,977 INFO L85 PathProgramCache]: Analyzing trace with hash -472615044, now seen corresponding path program 1 times [2023-08-30 10:18:49,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:18:49,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723377519] [2023-08-30 10:18:49,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:49,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:18:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:50,138 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:18:50,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:18:50,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723377519] [2023-08-30 10:18:50,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723377519] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:18:50,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308964673] [2023-08-30 10:18:50,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:50,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:18:50,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:18:50,141 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 10:18:50,169 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 10:18:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:50,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 10:18:50,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:18:50,286 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 7 treesize of output 6 [2023-08-30 10:18:50,342 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:18:50,343 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 10:18:50,358 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 13 treesize of output 15 [2023-08-30 10:18:50,419 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 13 treesize of output 15 [2023-08-30 10:18:50,432 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:18:50,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:18:50,456 WARN L839 $PredicateComparison]: unable to prove that (forall ((|t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_1149 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1149) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|)))) is different from false [2023-08-30 10:18:50,570 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2023-08-30 10:18:50,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308964673] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:18:50,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:18:50,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-30 10:18:50,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520149909] [2023-08-30 10:18:50,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:18:50,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:18:50,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:18:50,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:18:50,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=96, Unknown=6, NotChecked=20, Total=156 [2023-08-30 10:18:51,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 670 [2023-08-30 10:18:51,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 86 transitions, 330 flow. Second operand has 13 states, 13 states have (on average 263.61538461538464) internal successors, (3427), 13 states have internal predecessors, (3427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:51,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:18:51,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 670 [2023-08-30 10:18:51,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:18:52,971 INFO L130 PetriNetUnfolder]: 10178/16660 cut-off events. [2023-08-30 10:18:52,972 INFO L131 PetriNetUnfolder]: For 23752/23752 co-relation queries the response was YES. [2023-08-30 10:18:53,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48561 conditions, 16660 events. 10178/16660 cut-off events. For 23752/23752 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 119924 event pairs, 1775 based on Foata normal form. 92/13432 useless extension candidates. Maximal degree in co-relation 48534. Up to 8577 conditions per place. [2023-08-30 10:18:53,055 INFO L137 encePairwiseOnDemand]: 660/670 looper letters, 151 selfloop transitions, 13 changer transitions 0/171 dead transitions. [2023-08-30 10:18:53,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 171 transitions, 924 flow [2023-08-30 10:18:53,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:18:53,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:18:53,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1709 transitions. [2023-08-30 10:18:53,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42512437810945275 [2023-08-30 10:18:53,057 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1709 transitions. [2023-08-30 10:18:53,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1709 transitions. [2023-08-30 10:18:53,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:18:53,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1709 transitions. [2023-08-30 10:18:53,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 284.8333333333333) internal successors, (1709), 6 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:53,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:53,062 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:53,062 INFO L175 Difference]: Start difference. First operand has 101 places, 86 transitions, 330 flow. Second operand 6 states and 1709 transitions. [2023-08-30 10:18:53,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 171 transitions, 924 flow [2023-08-30 10:18:53,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 171 transitions, 905 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 10:18:53,072 INFO L231 Difference]: Finished difference. Result has 105 places, 88 transitions, 374 flow [2023-08-30 10:18:53,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=374, PETRI_PLACES=105, PETRI_TRANSITIONS=88} [2023-08-30 10:18:53,073 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -9 predicate places. [2023-08-30 10:18:53,073 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 88 transitions, 374 flow [2023-08-30 10:18:53,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 263.61538461538464) internal successors, (3427), 13 states have internal predecessors, (3427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:53,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:18:53,074 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:18:53,081 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 10:18:53,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:18:53,279 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:18:53,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:18:53,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1294049503, now seen corresponding path program 1 times [2023-08-30 10:18:53,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:18:53,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263618784] [2023-08-30 10:18:53,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:53,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:18:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:53,471 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:18:53,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:18:53,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263618784] [2023-08-30 10:18:53,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263618784] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:18:53,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:18:53,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:18:53,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100311619] [2023-08-30 10:18:53,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:18:53,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:18:53,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:18:53,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:18:53,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:18:53,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 670 [2023-08-30 10:18:53,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 88 transitions, 374 flow. Second operand has 8 states, 8 states have (on average 291.75) internal successors, (2334), 8 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:53,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:18:53,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 670 [2023-08-30 10:18:53,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:18:55,172 INFO L130 PetriNetUnfolder]: 11094/18192 cut-off events. [2023-08-30 10:18:55,173 INFO L131 PetriNetUnfolder]: For 22106/22106 co-relation queries the response was YES. [2023-08-30 10:18:55,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52311 conditions, 18192 events. 11094/18192 cut-off events. For 22106/22106 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 132691 event pairs, 1357 based on Foata normal form. 0/14546 useless extension candidates. Maximal degree in co-relation 52282. Up to 8535 conditions per place. [2023-08-30 10:18:55,302 INFO L137 encePairwiseOnDemand]: 657/670 looper letters, 202 selfloop transitions, 25 changer transitions 0/234 dead transitions. [2023-08-30 10:18:55,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 234 transitions, 1249 flow [2023-08-30 10:18:55,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 10:18:55,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 10:18:55,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2525 transitions. [2023-08-30 10:18:55,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710820895522388 [2023-08-30 10:18:55,304 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2525 transitions. [2023-08-30 10:18:55,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2525 transitions. [2023-08-30 10:18:55,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:18:55,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2525 transitions. [2023-08-30 10:18:55,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 315.625) internal successors, (2525), 8 states have internal predecessors, (2525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:55,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 670.0) internal successors, (6030), 9 states have internal predecessors, (6030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:55,311 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 670.0) internal successors, (6030), 9 states have internal predecessors, (6030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:55,311 INFO L175 Difference]: Start difference. First operand has 105 places, 88 transitions, 374 flow. Second operand 8 states and 2525 transitions. [2023-08-30 10:18:55,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 234 transitions, 1249 flow [2023-08-30 10:18:55,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 234 transitions, 1230 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 10:18:55,327 INFO L231 Difference]: Finished difference. Result has 112 places, 96 transitions, 487 flow [2023-08-30 10:18:55,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=487, PETRI_PLACES=112, PETRI_TRANSITIONS=96} [2023-08-30 10:18:55,328 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -2 predicate places. [2023-08-30 10:18:55,328 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 96 transitions, 487 flow [2023-08-30 10:18:55,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 291.75) internal successors, (2334), 8 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:55,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:18:55,328 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:18:55,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-30 10:18:55,329 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:18:55,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:18:55,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1294049504, now seen corresponding path program 1 times [2023-08-30 10:18:55,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:18:55,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728634589] [2023-08-30 10:18:55,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:55,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:18:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:55,405 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:18:55,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:18:55,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728634589] [2023-08-30 10:18:55,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728634589] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:18:55,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:18:55,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:18:55,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644014514] [2023-08-30 10:18:55,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:18:55,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:18:55,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:18:55,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:18:55,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:18:55,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 670 [2023-08-30 10:18:55,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 96 transitions, 487 flow. Second operand has 3 states, 3 states have (on average 304.6666666666667) internal successors, (914), 3 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:55,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:18:55,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 670 [2023-08-30 10:18:55,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:18:57,066 INFO L130 PetriNetUnfolder]: 12581/20854 cut-off events. [2023-08-30 10:18:57,067 INFO L131 PetriNetUnfolder]: For 41166/41166 co-relation queries the response was YES. [2023-08-30 10:18:57,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64848 conditions, 20854 events. 12581/20854 cut-off events. For 41166/41166 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 156873 event pairs, 6026 based on Foata normal form. 238/17565 useless extension candidates. Maximal degree in co-relation 64816. Up to 13608 conditions per place. [2023-08-30 10:18:57,186 INFO L137 encePairwiseOnDemand]: 661/670 looper letters, 114 selfloop transitions, 18 changer transitions 0/139 dead transitions. [2023-08-30 10:18:57,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 139 transitions, 916 flow [2023-08-30 10:18:57,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:18:57,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:18:57,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 993 transitions. [2023-08-30 10:18:57,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49402985074626865 [2023-08-30 10:18:57,188 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 993 transitions. [2023-08-30 10:18:57,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 993 transitions. [2023-08-30 10:18:57,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:18:57,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 993 transitions. [2023-08-30 10:18:57,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:57,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:57,190 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:57,190 INFO L175 Difference]: Start difference. First operand has 112 places, 96 transitions, 487 flow. Second operand 3 states and 993 transitions. [2023-08-30 10:18:57,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 139 transitions, 916 flow [2023-08-30 10:18:57,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 139 transitions, 865 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-30 10:18:57,230 INFO L231 Difference]: Finished difference. Result has 112 places, 102 transitions, 577 flow [2023-08-30 10:18:57,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=577, PETRI_PLACES=112, PETRI_TRANSITIONS=102} [2023-08-30 10:18:57,231 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -2 predicate places. [2023-08-30 10:18:57,231 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 102 transitions, 577 flow [2023-08-30 10:18:57,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 304.6666666666667) internal successors, (914), 3 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:57,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:18:57,231 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:18:57,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-30 10:18:57,232 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:18:57,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:18:57,232 INFO L85 PathProgramCache]: Analyzing trace with hash 322028013, now seen corresponding path program 1 times [2023-08-30 10:18:57,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:18:57,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752610891] [2023-08-30 10:18:57,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:57,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:18:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:57,371 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:18:57,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:18:57,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752610891] [2023-08-30 10:18:57,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752610891] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:18:57,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022094429] [2023-08-30 10:18:57,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:18:57,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:18:57,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:18:57,373 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 10:18:57,375 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 10:18:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:18:57,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 10:18:57,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:18:57,518 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 7 treesize of output 6 [2023-08-30 10:18:57,575 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:18:57,575 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 10:18:57,590 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 13 treesize of output 15 [2023-08-30 10:18:57,615 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 13 treesize of output 15 [2023-08-30 10:18:57,650 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:18:57,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:18:57,685 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1284 (Array Int Int)) (|t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| Int)) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1284) |c_~#cache~0.base|) |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483650))) is different from false [2023-08-30 10:18:57,765 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 1 not checked. [2023-08-30 10:18:57,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022094429] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:18:57,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:18:57,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-30 10:18:57,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786015947] [2023-08-30 10:18:57,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:18:57,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:18:57,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:18:57,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:18:57,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=97, Unknown=1, NotChecked=20, Total=156 [2023-08-30 10:18:57,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 670 [2023-08-30 10:18:57,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 102 transitions, 577 flow. Second operand has 13 states, 13 states have (on average 263.84615384615387) internal successors, (3430), 13 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:18:57,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:18:57,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 670 [2023-08-30 10:18:57,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:00,101 INFO L130 PetriNetUnfolder]: 15040/24976 cut-off events. [2023-08-30 10:19:00,101 INFO L131 PetriNetUnfolder]: For 70270/70270 co-relation queries the response was YES. [2023-08-30 10:19:00,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83573 conditions, 24976 events. 15040/24976 cut-off events. For 70270/70270 co-relation queries the response was YES. Maximal size of possible extension queue 784. Compared 190583 event pairs, 2346 based on Foata normal form. 0/20761 useless extension candidates. Maximal degree in co-relation 83541. Up to 14716 conditions per place. [2023-08-30 10:19:00,282 INFO L137 encePairwiseOnDemand]: 660/670 looper letters, 174 selfloop transitions, 22 changer transitions 0/203 dead transitions. [2023-08-30 10:19:00,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 203 transitions, 1481 flow [2023-08-30 10:19:00,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:19:00,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:19:00,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1706 transitions. [2023-08-30 10:19:00,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243781094527363 [2023-08-30 10:19:00,285 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1706 transitions. [2023-08-30 10:19:00,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1706 transitions. [2023-08-30 10:19:00,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:19:00,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1706 transitions. [2023-08-30 10:19:00,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 284.3333333333333) internal successors, (1706), 6 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:00,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:00,291 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:00,291 INFO L175 Difference]: Start difference. First operand has 112 places, 102 transitions, 577 flow. Second operand 6 states and 1706 transitions. [2023-08-30 10:19:00,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 203 transitions, 1481 flow [2023-08-30 10:19:00,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 203 transitions, 1391 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-30 10:19:00,358 INFO L231 Difference]: Finished difference. Result has 119 places, 116 transitions, 750 flow [2023-08-30 10:19:00,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=750, PETRI_PLACES=119, PETRI_TRANSITIONS=116} [2023-08-30 10:19:00,359 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 5 predicate places. [2023-08-30 10:19:00,359 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 116 transitions, 750 flow [2023-08-30 10:19:00,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 263.84615384615387) internal successors, (3430), 13 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:00,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:19:00,360 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:19:00,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 10:19:00,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:19:00,565 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:19:00,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:19:00,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1352962562, now seen corresponding path program 1 times [2023-08-30 10:19:00,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:19:00,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606323931] [2023-08-30 10:19:00,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:00,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:19:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:00,776 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:19:00,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:19:00,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606323931] [2023-08-30 10:19:00,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606323931] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:19:00,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460348109] [2023-08-30 10:19:00,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:00,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:19:00,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:19:00,781 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 10:19:00,812 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 10:19:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:00,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 10:19:00,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:19:00,941 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 7 treesize of output 6 [2023-08-30 10:19:00,992 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:19:00,993 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 10:19:01,001 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 13 treesize of output 15 [2023-08-30 10:19:01,072 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 27 treesize of output 20 [2023-08-30 10:19:01,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:19:01,138 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:19:01,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:19:01,154 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1363 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1363) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648))) is different from false [2023-08-30 10:19:01,166 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1361 Int) (v_ArrVal_1363 (Array Int Int))) (or (< v_ArrVal_1361 (+ |c_t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base| (store (select |c_#memory_int| |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_1361)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1363) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648)))) is different from false [2023-08-30 10:19:01,173 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1361 Int) (|t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_1363 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|))) (or (< v_ArrVal_1361 (+ (select .cse0 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base| (store .cse0 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_1361)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1363) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648))))) is different from false [2023-08-30 10:19:01,199 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1361 Int) (|t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_1363 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_~#cache~0.base|))) (or (< v_ArrVal_1361 (+ (select .cse0 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 1)) (< 0 (+ 2147483648 (select (select (store (store |c_#memory_int| |c_~#cache~0.base| (store .cse0 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_1361)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1363) |c_~#cache~0.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|)))))) is different from false [2023-08-30 10:19:01,231 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1361 Int) (|t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_1363 (Array Int Int)) (v_ArrVal_1360 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1360))) (let ((.cse0 (select .cse1 |c_~#cache~0.base|))) (or (< v_ArrVal_1361 (+ (select .cse0 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 1)) (< 0 (+ (select (select (store (store .cse1 |c_~#cache~0.base| (store .cse0 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_1361)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1363) |c_~#cache~0.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648)))))) is different from false [2023-08-30 10:19:01,388 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2023-08-30 10:19:01,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460348109] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:19:01,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:19:01,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 17 [2023-08-30 10:19:01,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522075841] [2023-08-30 10:19:01,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:19:01,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 10:19:01,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:19:01,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 10:19:01,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=144, Unknown=5, NotChecked=140, Total=342 [2023-08-30 10:19:01,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 670 [2023-08-30 10:19:01,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 116 transitions, 750 flow. Second operand has 19 states, 19 states have (on average 257.1578947368421) internal successors, (4886), 19 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:01,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:19:01,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 670 [2023-08-30 10:19:01,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:04,657 INFO L130 PetriNetUnfolder]: 17165/28684 cut-off events. [2023-08-30 10:19:04,658 INFO L131 PetriNetUnfolder]: For 81959/81959 co-relation queries the response was YES. [2023-08-30 10:19:04,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99026 conditions, 28684 events. 17165/28684 cut-off events. For 81959/81959 co-relation queries the response was YES. Maximal size of possible extension queue 885. Compared 227263 event pairs, 2891 based on Foata normal form. 248/25344 useless extension candidates. Maximal degree in co-relation 98989. Up to 13982 conditions per place. [2023-08-30 10:19:04,918 INFO L137 encePairwiseOnDemand]: 656/670 looper letters, 245 selfloop transitions, 56 changer transitions 0/308 dead transitions. [2023-08-30 10:19:04,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 308 transitions, 2176 flow [2023-08-30 10:19:04,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:19:04,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:19:04,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2780 transitions. [2023-08-30 10:19:04,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41492537313432837 [2023-08-30 10:19:04,921 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2780 transitions. [2023-08-30 10:19:04,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2780 transitions. [2023-08-30 10:19:04,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:19:04,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2780 transitions. [2023-08-30 10:19:04,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:04,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 670.0) internal successors, (7370), 11 states have internal predecessors, (7370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:04,930 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 670.0) internal successors, (7370), 11 states have internal predecessors, (7370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:04,931 INFO L175 Difference]: Start difference. First operand has 119 places, 116 transitions, 750 flow. Second operand 10 states and 2780 transitions. [2023-08-30 10:19:04,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 308 transitions, 2176 flow [2023-08-30 10:19:05,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 308 transitions, 2174 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:19:05,045 INFO L231 Difference]: Finished difference. Result has 132 places, 144 transitions, 1250 flow [2023-08-30 10:19:05,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1250, PETRI_PLACES=132, PETRI_TRANSITIONS=144} [2023-08-30 10:19:05,046 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 18 predicate places. [2023-08-30 10:19:05,046 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 144 transitions, 1250 flow [2023-08-30 10:19:05,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 257.1578947368421) internal successors, (4886), 19 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:05,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:19:05,047 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:19:05,052 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 10:19:05,247 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,SelfDestructingSolverStorable35 [2023-08-30 10:19:05,247 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:19:05,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:19:05,249 INFO L85 PathProgramCache]: Analyzing trace with hash 440647469, now seen corresponding path program 1 times [2023-08-30 10:19:05,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:19:05,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855775201] [2023-08-30 10:19:05,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:05,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:19:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:05,291 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-30 10:19:05,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:19:05,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855775201] [2023-08-30 10:19:05,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855775201] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:19:05,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:19:05,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:19:05,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349302276] [2023-08-30 10:19:05,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:19:05,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:19:05,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:19:05,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:19:05,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:19:05,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 670 [2023-08-30 10:19:05,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 144 transitions, 1250 flow. Second operand has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:05,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:19:05,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 670 [2023-08-30 10:19:05,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:09,832 INFO L130 PetriNetUnfolder]: 26887/44929 cut-off events. [2023-08-30 10:19:09,832 INFO L131 PetriNetUnfolder]: For 208800/208800 co-relation queries the response was YES. [2023-08-30 10:19:10,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172005 conditions, 44929 events. 26887/44929 cut-off events. For 208800/208800 co-relation queries the response was YES. Maximal size of possible extension queue 1359. Compared 369971 event pairs, 13288 based on Foata normal form. 348/40072 useless extension candidates. Maximal degree in co-relation 171962. Up to 26858 conditions per place. [2023-08-30 10:19:10,261 INFO L137 encePairwiseOnDemand]: 665/670 looper letters, 249 selfloop transitions, 2 changer transitions 0/258 dead transitions. [2023-08-30 10:19:10,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 258 transitions, 2852 flow [2023-08-30 10:19:10,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:19:10,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:19:10,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1023 transitions. [2023-08-30 10:19:10,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508955223880597 [2023-08-30 10:19:10,262 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1023 transitions. [2023-08-30 10:19:10,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1023 transitions. [2023-08-30 10:19:10,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:19:10,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1023 transitions. [2023-08-30 10:19:10,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 341.0) internal successors, (1023), 3 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:10,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:10,265 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:10,265 INFO L175 Difference]: Start difference. First operand has 132 places, 144 transitions, 1250 flow. Second operand 3 states and 1023 transitions. [2023-08-30 10:19:10,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 258 transitions, 2852 flow [2023-08-30 10:19:10,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 258 transitions, 2723 flow, removed 52 selfloop flow, removed 3 redundant places. [2023-08-30 10:19:10,544 INFO L231 Difference]: Finished difference. Result has 132 places, 145 transitions, 1200 flow [2023-08-30 10:19:10,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=1184, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1200, PETRI_PLACES=132, PETRI_TRANSITIONS=145} [2023-08-30 10:19:10,545 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 18 predicate places. [2023-08-30 10:19:10,545 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 145 transitions, 1200 flow [2023-08-30 10:19:10,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:10,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:19:10,545 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:19:10,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-30 10:19:10,546 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:19:10,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:19:10,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1352962561, now seen corresponding path program 1 times [2023-08-30 10:19:10,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:19:10,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845840512] [2023-08-30 10:19:10,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:10,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:19:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:11,196 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:19:11,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:19:11,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845840512] [2023-08-30 10:19:11,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845840512] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:19:11,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487126180] [2023-08-30 10:19:11,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:11,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:19:11,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:19:11,201 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 10:19:11,209 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 10:19:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:11,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 10:19:11,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:19:11,423 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:19:11,427 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 10:19:11,510 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 10:19:11,546 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 10:19:11,564 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:19:11,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:19:11,600 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1475 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1475) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483649)) is different from false [2023-08-30 10:19:11,619 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:19:11,620 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 10:19:11,622 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 10:19:11,706 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2023-08-30 10:19:11,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487126180] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:19:11,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:19:11,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 18 [2023-08-30 10:19:11,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651636238] [2023-08-30 10:19:11,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:19:11,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 10:19:11,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:19:11,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 10:19:11,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=293, Unknown=1, NotChecked=34, Total=380 [2023-08-30 10:19:11,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 670 [2023-08-30 10:19:11,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 145 transitions, 1200 flow. Second operand has 20 states, 20 states have (on average 246.4) internal successors, (4928), 20 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:11,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:19:11,715 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 670 [2023-08-30 10:19:11,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:18,539 INFO L130 PetriNetUnfolder]: 35102/58643 cut-off events. [2023-08-30 10:19:18,540 INFO L131 PetriNetUnfolder]: For 240074/240074 co-relation queries the response was YES. [2023-08-30 10:19:18,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225878 conditions, 58643 events. 35102/58643 cut-off events. For 240074/240074 co-relation queries the response was YES. Maximal size of possible extension queue 1502. Compared 493870 event pairs, 9535 based on Foata normal form. 446/52241 useless extension candidates. Maximal degree in co-relation 225834. Up to 23496 conditions per place. [2023-08-30 10:19:19,103 INFO L137 encePairwiseOnDemand]: 654/670 looper letters, 396 selfloop transitions, 91 changer transitions 0/494 dead transitions. [2023-08-30 10:19:19,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 494 transitions, 4117 flow [2023-08-30 10:19:19,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 10:19:19,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 10:19:19,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4499 transitions. [2023-08-30 10:19:19,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39499561018437224 [2023-08-30 10:19:19,107 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4499 transitions. [2023-08-30 10:19:19,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4499 transitions. [2023-08-30 10:19:19,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:19:19,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4499 transitions. [2023-08-30 10:19:19,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 264.6470588235294) internal successors, (4499), 17 states have internal predecessors, (4499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:19,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 670.0) internal successors, (12060), 18 states have internal predecessors, (12060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:19,119 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 670.0) internal successors, (12060), 18 states have internal predecessors, (12060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:19,119 INFO L175 Difference]: Start difference. First operand has 132 places, 145 transitions, 1200 flow. Second operand 17 states and 4499 transitions. [2023-08-30 10:19:19,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 494 transitions, 4117 flow [2023-08-30 10:19:19,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 494 transitions, 4018 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-08-30 10:19:19,851 INFO L231 Difference]: Finished difference. Result has 157 places, 203 transitions, 2164 flow [2023-08-30 10:19:19,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2164, PETRI_PLACES=157, PETRI_TRANSITIONS=203} [2023-08-30 10:19:19,852 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 43 predicate places. [2023-08-30 10:19:19,852 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 203 transitions, 2164 flow [2023-08-30 10:19:19,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 246.4) internal successors, (4928), 20 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:19,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:19:19,853 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:19:19,857 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 10:19:20,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-30 10:19:20,055 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:19:20,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:19:20,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1027591379, now seen corresponding path program 1 times [2023-08-30 10:19:20,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:19:20,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193901179] [2023-08-30 10:19:20,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:20,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:19:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:20,127 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-30 10:19:20,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:19:20,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193901179] [2023-08-30 10:19:20,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193901179] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:19:20,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:19:20,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:19:20,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001222112] [2023-08-30 10:19:20,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:19:20,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:19:20,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:19:20,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:19:20,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:19:20,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 670 [2023-08-30 10:19:20,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 203 transitions, 2164 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 10:19:20,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:19:20,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 670 [2023-08-30 10:19:20,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:27,628 INFO L130 PetriNetUnfolder]: 38333/65552 cut-off events. [2023-08-30 10:19:27,628 INFO L131 PetriNetUnfolder]: For 421344/421346 co-relation queries the response was YES. [2023-08-30 10:19:28,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286453 conditions, 65552 events. 38333/65552 cut-off events. For 421344/421346 co-relation queries the response was YES. Maximal size of possible extension queue 1700. Compared 578098 event pairs, 14315 based on Foata normal form. 0/58062 useless extension candidates. Maximal degree in co-relation 286398. Up to 37747 conditions per place. [2023-08-30 10:19:28,604 INFO L137 encePairwiseOnDemand]: 661/670 looper letters, 214 selfloop transitions, 88 changer transitions 0/309 dead transitions. [2023-08-30 10:19:28,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 309 transitions, 3824 flow [2023-08-30 10:19:28,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:19:28,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:19:28,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 993 transitions. [2023-08-30 10:19:28,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49402985074626865 [2023-08-30 10:19:28,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 993 transitions. [2023-08-30 10:19:28,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 993 transitions. [2023-08-30 10:19:28,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:19:28,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 993 transitions. [2023-08-30 10:19:28,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:28,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:28,608 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:28,609 INFO L175 Difference]: Start difference. First operand has 157 places, 203 transitions, 2164 flow. Second operand 3 states and 993 transitions. [2023-08-30 10:19:28,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 309 transitions, 3824 flow [2023-08-30 10:19:29,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 309 transitions, 3757 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-30 10:19:29,790 INFO L231 Difference]: Finished difference. Result has 157 places, 239 transitions, 2999 flow [2023-08-30 10:19:29,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=2120, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2999, PETRI_PLACES=157, PETRI_TRANSITIONS=239} [2023-08-30 10:19:29,791 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 43 predicate places. [2023-08-30 10:19:29,791 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 239 transitions, 2999 flow [2023-08-30 10:19:29,791 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 10:19:29,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:19:29,791 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:19:29,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-30 10:19:29,792 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:19:29,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:19:29,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1027591380, now seen corresponding path program 1 times [2023-08-30 10:19:29,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:19:29,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958072660] [2023-08-30 10:19:29,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:29,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:19:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:19:29,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:19:29,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958072660] [2023-08-30 10:19:29,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958072660] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:19:29,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115026918] [2023-08-30 10:19:29,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:29,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:19:29,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:19:30,011 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:19:30,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-30 10:19:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:30,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 10:19:30,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:19:30,156 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 7 treesize of output 6 [2023-08-30 10:19:30,204 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:19:30,204 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 10:19:30,221 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 13 treesize of output 15 [2023-08-30 10:19:30,246 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 13 treesize of output 15 [2023-08-30 10:19:30,306 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 27 treesize of output 20 [2023-08-30 10:19:30,334 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:19:30,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:19:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:19:30,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115026918] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:19:30,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:19:30,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-30 10:19:30,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320883086] [2023-08-30 10:19:30,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:19:30,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 10:19:30,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:19:30,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 10:19:30,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=274, Unknown=1, NotChecked=0, Total=342 [2023-08-30 10:19:30,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 670 [2023-08-30 10:19:30,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 239 transitions, 2999 flow. Second operand has 19 states, 19 states have (on average 261.57894736842104) internal successors, (4970), 19 states have internal predecessors, (4970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:30,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:19:30,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 670 [2023-08-30 10:19:30,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:31,157 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~#t_ids~0#1.base_122| Int)) (or (forall ((v_ArrVal_1589 (Array Int Int)) (|t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| Int)) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~#t_ids~0#1.base_122| v_ArrVal_1589) |c_~#cache~0.base|) |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset|)))) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~#t_ids~0#1.base_122|))))) (exists ((v_ArrVal_1590 Int)) (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (store .cse0 |c_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_1590) (select |c_#memory_int| 4)) (<= (+ (select .cse0 |c_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset|) 1) v_ArrVal_1590)))) (< 0 (+ 2147483649 |c_t_funThread2of2ForFork0_cache_entry_addref_#t~post35#1|)) (forall ((v_ArrVal_1589 (Array Int Int)) (|t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| Int)) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1589) |c_~#cache~0.base|) |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset|)))) (= 4 |c_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base|)) is different from false [2023-08-30 10:19:41,840 INFO L130 PetriNetUnfolder]: 45713/78809 cut-off events. [2023-08-30 10:19:41,841 INFO L131 PetriNetUnfolder]: For 669262/669264 co-relation queries the response was YES. [2023-08-30 10:19:42,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376059 conditions, 78809 events. 45713/78809 cut-off events. For 669262/669264 co-relation queries the response was YES. Maximal size of possible extension queue 2124. Compared 716368 event pairs, 7207 based on Foata normal form. 680/73258 useless extension candidates. Maximal degree in co-relation 376005. Up to 37768 conditions per place. [2023-08-30 10:19:42,709 INFO L137 encePairwiseOnDemand]: 638/670 looper letters, 579 selfloop transitions, 235 changer transitions 0/821 dead transitions. [2023-08-30 10:19:42,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 821 transitions, 10044 flow [2023-08-30 10:19:42,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 10:19:42,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 10:19:42,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4795 transitions. [2023-08-30 10:19:42,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42098331870061456 [2023-08-30 10:19:42,713 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4795 transitions. [2023-08-30 10:19:42,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4795 transitions. [2023-08-30 10:19:42,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:19:42,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4795 transitions. [2023-08-30 10:19:42,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 282.05882352941177) internal successors, (4795), 17 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 10:19:42,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 670.0) internal successors, (12060), 18 states have internal predecessors, (12060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:42,727 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 670.0) internal successors, (12060), 18 states have internal predecessors, (12060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:42,727 INFO L175 Difference]: Start difference. First operand has 157 places, 239 transitions, 2999 flow. Second operand 17 states and 4795 transitions. [2023-08-30 10:19:42,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 821 transitions, 10044 flow [2023-08-30 10:19:44,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 821 transitions, 9726 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-30 10:19:44,812 INFO L231 Difference]: Finished difference. Result has 181 places, 426 transitions, 6419 flow [2023-08-30 10:19:44,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=2819, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6419, PETRI_PLACES=181, PETRI_TRANSITIONS=426} [2023-08-30 10:19:44,813 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 67 predicate places. [2023-08-30 10:19:44,813 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 426 transitions, 6419 flow [2023-08-30 10:19:44,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 261.57894736842104) internal successors, (4970), 19 states have internal predecessors, (4970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:44,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:19:44,814 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:19:44,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-30 10:19:45,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-30 10:19:45,020 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:19:45,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:19:45,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1247813029, now seen corresponding path program 1 times [2023-08-30 10:19:45,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:19:45,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023680260] [2023-08-30 10:19:45,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:45,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:19:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:45,058 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:19:45,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:19:45,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023680260] [2023-08-30 10:19:45,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023680260] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:19:45,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:19:45,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:19:45,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658738179] [2023-08-30 10:19:45,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:19:45,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:19:45,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:19:45,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:19:45,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:19:45,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 670 [2023-08-30 10:19:45,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 426 transitions, 6419 flow. Second operand has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:45,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:19:45,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 670 [2023-08-30 10:19:45,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:56,913 INFO L130 PetriNetUnfolder]: 44189/76412 cut-off events. [2023-08-30 10:19:56,913 INFO L131 PetriNetUnfolder]: For 787976/787978 co-relation queries the response was YES. [2023-08-30 10:19:57,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409086 conditions, 76412 events. 44189/76412 cut-off events. For 787976/787978 co-relation queries the response was YES. Maximal size of possible extension queue 2071. Compared 695827 event pairs, 20557 based on Foata normal form. 0/71263 useless extension candidates. Maximal degree in co-relation 409021. Up to 65243 conditions per place. [2023-08-30 10:19:58,293 INFO L137 encePairwiseOnDemand]: 666/670 looper letters, 504 selfloop transitions, 19 changer transitions 0/530 dead transitions. [2023-08-30 10:19:58,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 530 transitions, 8966 flow [2023-08-30 10:19:58,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:19:58,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:19:58,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 999 transitions. [2023-08-30 10:19:58,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49701492537313435 [2023-08-30 10:19:58,295 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 999 transitions. [2023-08-30 10:19:58,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 999 transitions. [2023-08-30 10:19:58,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:19:58,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 999 transitions. [2023-08-30 10:19:58,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:58,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:58,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:19:58,297 INFO L175 Difference]: Start difference. First operand has 181 places, 426 transitions, 6419 flow. Second operand 3 states and 999 transitions. [2023-08-30 10:19:58,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 530 transitions, 8966 flow [2023-08-30 10:20:02,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 530 transitions, 8418 flow, removed 204 selfloop flow, removed 5 redundant places. [2023-08-30 10:20:02,984 INFO L231 Difference]: Finished difference. Result has 177 places, 424 transitions, 6003 flow [2023-08-30 10:20:02,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=5965, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=6003, PETRI_PLACES=177, PETRI_TRANSITIONS=424} [2023-08-30 10:20:02,985 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 63 predicate places. [2023-08-30 10:20:02,985 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 424 transitions, 6003 flow [2023-08-30 10:20:02,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:02,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:02,986 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:20:02,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-30 10:20:02,986 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:20:02,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:02,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1247813142, now seen corresponding path program 1 times [2023-08-30 10:20:02,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:02,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377954759] [2023-08-30 10:20:02,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:02,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:03,021 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:20:03,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:03,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377954759] [2023-08-30 10:20:03,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377954759] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:20:03,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:20:03,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:20:03,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419328830] [2023-08-30 10:20:03,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:20:03,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:20:03,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:03,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:20:03,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:20:03,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 670 [2023-08-30 10:20:03,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 424 transitions, 6003 flow. Second operand has 3 states, 3 states have (on average 313.6666666666667) internal successors, (941), 3 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:03,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:03,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 670 [2023-08-30 10:20:03,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:15,070 INFO L130 PetriNetUnfolder]: 42680/73979 cut-off events. [2023-08-30 10:20:15,071 INFO L131 PetriNetUnfolder]: For 723743/723745 co-relation queries the response was YES. [2023-08-30 10:20:15,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390980 conditions, 73979 events. 42680/73979 cut-off events. For 723743/723745 co-relation queries the response was YES. Maximal size of possible extension queue 2007. Compared 675098 event pairs, 23977 based on Foata normal form. 971/70830 useless extension candidates. Maximal degree in co-relation 390916. Up to 69285 conditions per place. [2023-08-30 10:20:16,087 INFO L137 encePairwiseOnDemand]: 668/670 looper letters, 468 selfloop transitions, 3 changer transitions 0/478 dead transitions. [2023-08-30 10:20:16,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 478 transitions, 7465 flow [2023-08-30 10:20:16,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:20:16,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:20:16,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1000 transitions. [2023-08-30 10:20:16,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975124378109453 [2023-08-30 10:20:16,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1000 transitions. [2023-08-30 10:20:16,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1000 transitions. [2023-08-30 10:20:16,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:16,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1000 transitions. [2023-08-30 10:20:16,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 333.3333333333333) internal successors, (1000), 3 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:16,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:16,091 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:16,091 INFO L175 Difference]: Start difference. First operand has 177 places, 424 transitions, 6003 flow. Second operand 3 states and 1000 transitions. [2023-08-30 10:20:16,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 478 transitions, 7465 flow [2023-08-30 10:20:19,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 478 transitions, 7446 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:20:19,774 INFO L231 Difference]: Finished difference. Result has 177 places, 422 transitions, 5976 flow [2023-08-30 10:20:19,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=5970, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=5976, PETRI_PLACES=177, PETRI_TRANSITIONS=422} [2023-08-30 10:20:19,775 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 63 predicate places. [2023-08-30 10:20:19,775 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 422 transitions, 5976 flow [2023-08-30 10:20:19,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 313.6666666666667) internal successors, (941), 3 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:19,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:19,775 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:20:19,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-30 10:20:19,776 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:20:19,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:19,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1792073402, now seen corresponding path program 1 times [2023-08-30 10:20:19,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:19,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833986231] [2023-08-30 10:20:19,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:19,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:19,964 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:20:19,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:19,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833986231] [2023-08-30 10:20:19,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833986231] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:20:19,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432848821] [2023-08-30 10:20:19,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:19,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:20:19,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:20:19,969 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:20:19,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-30 10:20:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:20,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 10:20:20,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:20:20,121 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 7 treesize of output 6 [2023-08-30 10:20:20,175 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:20:20,175 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 10:20:20,190 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 13 treesize of output 15 [2023-08-30 10:20:20,214 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 13 treesize of output 15 [2023-08-30 10:20:20,278 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 27 treesize of output 20 [2023-08-30 10:20:20,323 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:20:20,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:20:20,399 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1750 (Array Int Int)) (|t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| Int)) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1750) |c_~#cache~0.base|) |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset|)))) is different from false [2023-08-30 10:20:20,485 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 1 not checked. [2023-08-30 10:20:20,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432848821] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:20:20,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:20:20,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-30 10:20:20,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561465020] [2023-08-30 10:20:20,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:20:20,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 10:20:20,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:20,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 10:20:20,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=245, Unknown=1, NotChecked=32, Total=342 [2023-08-30 10:20:20,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 670 [2023-08-30 10:20:20,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 422 transitions, 5976 flow. Second operand has 19 states, 19 states have (on average 257.7368421052632) internal successors, (4897), 19 states have internal predecessors, (4897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:20,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:20,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 670 [2023-08-30 10:20:20,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:33,281 INFO L130 PetriNetUnfolder]: 43773/75310 cut-off events. [2023-08-30 10:20:33,281 INFO L131 PetriNetUnfolder]: For 744689/744691 co-relation queries the response was YES. [2023-08-30 10:20:33,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398808 conditions, 75310 events. 43773/75310 cut-off events. For 744689/744691 co-relation queries the response was YES. Maximal size of possible extension queue 1977. Compared 680420 event pairs, 6552 based on Foata normal form. 406/71589 useless extension candidates. Maximal degree in co-relation 398743. Up to 35597 conditions per place. [2023-08-30 10:20:34,294 INFO L137 encePairwiseOnDemand]: 655/670 looper letters, 547 selfloop transitions, 248 changer transitions 0/802 dead transitions. [2023-08-30 10:20:34,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 802 transitions, 11193 flow [2023-08-30 10:20:34,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 10:20:34,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 10:20:34,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3877 transitions. [2023-08-30 10:20:34,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4133262260127932 [2023-08-30 10:20:34,298 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3877 transitions. [2023-08-30 10:20:34,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3877 transitions. [2023-08-30 10:20:34,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:34,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3877 transitions. [2023-08-30 10:20:34,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 276.92857142857144) internal successors, (3877), 14 states have internal predecessors, (3877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:34,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 670.0) internal successors, (10050), 15 states have internal predecessors, (10050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:34,310 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 670.0) internal successors, (10050), 15 states have internal predecessors, (10050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:34,310 INFO L175 Difference]: Start difference. First operand has 177 places, 422 transitions, 5976 flow. Second operand 14 states and 3877 transitions. [2023-08-30 10:20:34,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 802 transitions, 11193 flow [2023-08-30 10:20:37,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 802 transitions, 11180 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:20:37,853 INFO L231 Difference]: Finished difference. Result has 192 places, 460 transitions, 7305 flow [2023-08-30 10:20:37,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=5973, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7305, PETRI_PLACES=192, PETRI_TRANSITIONS=460} [2023-08-30 10:20:37,854 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 78 predicate places. [2023-08-30 10:20:37,854 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 460 transitions, 7305 flow [2023-08-30 10:20:37,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 257.7368421052632) internal successors, (4897), 19 states have internal predecessors, (4897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:37,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:37,855 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:20:37,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-30 10:20:38,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:20:38,056 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:20:38,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:38,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1745106353, now seen corresponding path program 1 times [2023-08-30 10:20:38,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:38,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264754161] [2023-08-30 10:20:38,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:38,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-30 10:20:38,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:38,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264754161] [2023-08-30 10:20:38,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264754161] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:20:38,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:20:38,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:20:38,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127500031] [2023-08-30 10:20:38,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:20:38,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:20:38,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:38,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:20:38,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:20:38,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 670 [2023-08-30 10:20:38,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 460 transitions, 7305 flow. Second operand has 3 states, 3 states have (on average 287.0) internal successors, (861), 3 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:38,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:38,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 670 [2023-08-30 10:20:38,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:53,461 INFO L130 PetriNetUnfolder]: 50666/88342 cut-off events. [2023-08-30 10:20:53,461 INFO L131 PetriNetUnfolder]: For 1043770/1043772 co-relation queries the response was YES. [2023-08-30 10:20:54,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502157 conditions, 88342 events. 50666/88342 cut-off events. For 1043770/1043772 co-relation queries the response was YES. Maximal size of possible extension queue 2337. Compared 830818 event pairs, 12009 based on Foata normal form. 3451/86303 useless extension candidates. Maximal degree in co-relation 502088. Up to 44107 conditions per place. [2023-08-30 10:20:54,701 INFO L137 encePairwiseOnDemand]: 656/670 looper letters, 719 selfloop transitions, 25 changer transitions 0/750 dead transitions. [2023-08-30 10:20:54,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 750 transitions, 13410 flow [2023-08-30 10:20:54,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:20:54,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:20:54,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 945 transitions. [2023-08-30 10:20:54,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4701492537313433 [2023-08-30 10:20:54,703 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 945 transitions. [2023-08-30 10:20:54,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 945 transitions. [2023-08-30 10:20:54,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:54,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 945 transitions. [2023-08-30 10:20:54,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:54,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:54,705 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:20:54,705 INFO L175 Difference]: Start difference. First operand has 192 places, 460 transitions, 7305 flow. Second operand 3 states and 945 transitions. [2023-08-30 10:20:54,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 750 transitions, 13410 flow [2023-08-30 10:21:00,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 750 transitions, 13133 flow, removed 31 selfloop flow, removed 9 redundant places. [2023-08-30 10:21:00,852 INFO L231 Difference]: Finished difference. Result has 186 places, 476 transitions, 7323 flow [2023-08-30 10:21:00,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=7131, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=7323, PETRI_PLACES=186, PETRI_TRANSITIONS=476} [2023-08-30 10:21:00,853 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 72 predicate places. [2023-08-30 10:21:00,853 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 476 transitions, 7323 flow [2023-08-30 10:21:00,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 287.0) internal successors, (861), 3 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:00,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:21:00,853 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:21:00,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-08-30 10:21:00,853 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:21:00,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:21:00,854 INFO L85 PathProgramCache]: Analyzing trace with hash -295507950, now seen corresponding path program 1 times [2023-08-30 10:21:00,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:21:00,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318823166] [2023-08-30 10:21:00,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:21:00,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:21:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:21:01,079 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:21:01,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:21:01,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318823166] [2023-08-30 10:21:01,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318823166] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:21:01,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320172396] [2023-08-30 10:21:01,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:21:01,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:21:01,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:21:01,082 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:21:01,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-30 10:21:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:21:01,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 10:21:01,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:21:01,243 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 7 treesize of output 6 [2023-08-30 10:21:01,297 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:21:01,297 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 10:21:01,308 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 13 treesize of output 15 [2023-08-30 10:21:01,373 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 27 treesize of output 20 [2023-08-30 10:21:01,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:21:01,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:21:01,474 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:21:01,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:21:01,485 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1873 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1873) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648))) is different from false [2023-08-30 10:21:01,507 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1873 (Array Int Int)) (v_ArrVal_1870 Int)) (or (< 0 (+ 2147483648 (select (select (store (store |c_#memory_int| |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base| (store (select |c_#memory_int| |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_1870)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1873) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|))) (< v_ArrVal_1870 (+ |c_t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 1)))) is different from false [2023-08-30 10:21:01,588 WARN L839 $PredicateComparison]: unable to prove that (forall ((|t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_1873 (Array Int Int)) (v_ArrVal_1870 Int)) (let ((.cse0 (select |c_#memory_int| |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|))) (or (< v_ArrVal_1870 (+ (select .cse0 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base| (store .cse0 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_1870)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1873) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648))))) is different from false [2023-08-30 10:21:01,620 WARN L839 $PredicateComparison]: unable to prove that (forall ((|t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_1873 (Array Int Int)) (v_ArrVal_1870 Int)) (let ((.cse0 (select |c_#memory_int| |c_~#cache~0.base|))) (or (< v_ArrVal_1870 (+ (select .cse0 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#cache~0.base| (store .cse0 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_1870)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1873) |c_~#cache~0.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648))))) is different from false [2023-08-30 10:21:01,653 WARN L839 $PredicateComparison]: unable to prove that (forall ((|t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_1873 (Array Int Int)) (v_ArrVal_1870 Int) (v_ArrVal_1869 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1869))) (let ((.cse1 (select .cse0 |c_~#cache~0.base|))) (or (< 0 (+ (select (select (store (store .cse0 |c_~#cache~0.base| (store .cse1 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_1870)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1873) |c_~#cache~0.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648)) (< v_ArrVal_1870 (+ (select .cse1 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 1)))))) is different from false [2023-08-30 10:21:01,802 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 5 not checked. [2023-08-30 10:21:01,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320172396] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:21:01,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:21:01,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 17 [2023-08-30 10:21:01,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280107831] [2023-08-30 10:21:01,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:21:01,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 10:21:01,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:21:01,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 10:21:01,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=144, Unknown=5, NotChecked=140, Total=342 [2023-08-30 10:21:01,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 670 [2023-08-30 10:21:01,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 476 transitions, 7323 flow. Second operand has 19 states, 19 states have (on average 257.6842105263158) internal successors, (4896), 19 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:01,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:21:01,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 670 [2023-08-30 10:21:01,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:21:18,525 INFO L130 PetriNetUnfolder]: 49983/88441 cut-off events. [2023-08-30 10:21:18,525 INFO L131 PetriNetUnfolder]: For 980948/980974 co-relation queries the response was YES. [2023-08-30 10:21:19,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521412 conditions, 88441 events. 49983/88441 cut-off events. For 980948/980974 co-relation queries the response was YES. Maximal size of possible extension queue 2367. Compared 844545 event pairs, 11721 based on Foata normal form. 98/83083 useless extension candidates. Maximal degree in co-relation 521343. Up to 45227 conditions per place. [2023-08-30 10:21:20,029 INFO L137 encePairwiseOnDemand]: 656/670 looper letters, 481 selfloop transitions, 220 changer transitions 0/708 dead transitions. [2023-08-30 10:21:20,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 708 transitions, 10431 flow [2023-08-30 10:21:20,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:21:20,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:21:20,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2772 transitions. [2023-08-30 10:21:20,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4137313432835821 [2023-08-30 10:21:20,032 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2772 transitions. [2023-08-30 10:21:20,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2772 transitions. [2023-08-30 10:21:20,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:21:20,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2772 transitions. [2023-08-30 10:21:20,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 277.2) internal successors, (2772), 10 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:20,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 670.0) internal successors, (7370), 11 states have internal predecessors, (7370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:20,037 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 670.0) internal successors, (7370), 11 states have internal predecessors, (7370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:20,037 INFO L175 Difference]: Start difference. First operand has 186 places, 476 transitions, 7323 flow. Second operand 10 states and 2772 transitions. [2023-08-30 10:21:20,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 708 transitions, 10431 flow [2023-08-30 10:21:28,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 708 transitions, 10358 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:21:28,012 INFO L231 Difference]: Finished difference. Result has 196 places, 489 transitions, 8187 flow [2023-08-30 10:21:28,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=7298, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8187, PETRI_PLACES=196, PETRI_TRANSITIONS=489} [2023-08-30 10:21:28,012 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 82 predicate places. [2023-08-30 10:21:28,012 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 489 transitions, 8187 flow [2023-08-30 10:21:28,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 257.6842105263158) internal successors, (4896), 19 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:28,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:21:28,013 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:21:28,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-30 10:21:28,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-08-30 10:21:28,214 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:21:28,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:21:28,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1766749540, now seen corresponding path program 1 times [2023-08-30 10:21:28,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:21:28,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156070263] [2023-08-30 10:21:28,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:21:28,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:21:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:21:28,403 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:21:28,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:21:28,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156070263] [2023-08-30 10:21:28,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156070263] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:21:28,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:21:28,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 10:21:28,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894312622] [2023-08-30 10:21:28,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:21:28,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:21:28,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:21:28,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:21:28,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:21:28,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 670 [2023-08-30 10:21:28,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 489 transitions, 8187 flow. Second operand has 8 states, 8 states have (on average 285.5) internal successors, (2284), 8 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:28,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:21:28,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 670 [2023-08-30 10:21:28,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:21:48,605 INFO L130 PetriNetUnfolder]: 59754/105910 cut-off events. [2023-08-30 10:21:48,605 INFO L131 PetriNetUnfolder]: For 1285747/1285813 co-relation queries the response was YES. [2023-08-30 10:21:49,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627992 conditions, 105910 events. 59754/105910 cut-off events. For 1285747/1285813 co-relation queries the response was YES. Maximal size of possible extension queue 2763. Compared 1035821 event pairs, 15894 based on Foata normal form. 13/99201 useless extension candidates. Maximal degree in co-relation 627920. Up to 39876 conditions per place. [2023-08-30 10:21:50,454 INFO L137 encePairwiseOnDemand]: 648/670 looper letters, 1038 selfloop transitions, 831 changer transitions 0/1876 dead transitions. [2023-08-30 10:21:50,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 1876 transitions, 32352 flow [2023-08-30 10:21:50,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-30 10:21:50,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-30 10:21:50,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6378 transitions. [2023-08-30 10:21:50,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533049040511727 [2023-08-30 10:21:50,460 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6378 transitions. [2023-08-30 10:21:50,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6378 transitions. [2023-08-30 10:21:50,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:21:50,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6378 transitions. [2023-08-30 10:21:50,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 303.7142857142857) internal successors, (6378), 21 states have internal predecessors, (6378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:50,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 670.0) internal successors, (14740), 22 states have internal predecessors, (14740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:50,474 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 670.0) internal successors, (14740), 22 states have internal predecessors, (14740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:21:50,475 INFO L175 Difference]: Start difference. First operand has 196 places, 489 transitions, 8187 flow. Second operand 21 states and 6378 transitions. [2023-08-30 10:21:50,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 1876 transitions, 32352 flow [2023-08-30 10:22:01,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 1876 transitions, 31664 flow, removed 56 selfloop flow, removed 6 redundant places. [2023-08-30 10:22:01,236 INFO L231 Difference]: Finished difference. Result has 228 places, 1217 transitions, 24767 flow [2023-08-30 10:22:01,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=8012, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=24767, PETRI_PLACES=228, PETRI_TRANSITIONS=1217} [2023-08-30 10:22:01,237 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 114 predicate places. [2023-08-30 10:22:01,237 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 1217 transitions, 24767 flow [2023-08-30 10:22:01,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 285.5) internal successors, (2284), 8 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:01,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:22:01,238 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:22:01,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-30 10:22:01,238 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:22:01,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:22:01,238 INFO L85 PathProgramCache]: Analyzing trace with hash 802442450, now seen corresponding path program 2 times [2023-08-30 10:22:01,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:22:01,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430964338] [2023-08-30 10:22:01,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:22:01,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:22:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:22:01,624 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:22:01,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:22:01,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430964338] [2023-08-30 10:22:01,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430964338] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:22:01,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771537567] [2023-08-30 10:22:01,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:22:01,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:22:01,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:22:01,626 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:22:01,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-30 10:22:01,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:22:01,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:22:01,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 10:22:01,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:22:01,813 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:22:01,814 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 10:22:01,873 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 10:22:01,900 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 10:22:01,914 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-08-30 10:22:01,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:22:01,930 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1993 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1993) |c_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483649)) is different from false [2023-08-30 10:22:01,938 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:22:01,938 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 10:22:01,941 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 10:22:01,995 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 2 not checked. [2023-08-30 10:22:01,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771537567] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:22:01,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:22:01,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 19 [2023-08-30 10:22:01,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277005269] [2023-08-30 10:22:01,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:22:01,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 10:22:01,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:22:01,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 10:22:01,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=327, Unknown=1, NotChecked=36, Total=420 [2023-08-30 10:22:02,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 670 [2023-08-30 10:22:02,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 1217 transitions, 24767 flow. Second operand has 21 states, 21 states have (on average 246.52380952380952) internal successors, (5177), 21 states have internal predecessors, (5177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:02,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:22:02,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 670 [2023-08-30 10:22:02,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:22:39,168 INFO L130 PetriNetUnfolder]: 69134/124696 cut-off events. [2023-08-30 10:22:39,168 INFO L131 PetriNetUnfolder]: For 1901220/1901264 co-relation queries the response was YES. [2023-08-30 10:22:40,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 812646 conditions, 124696 events. 69134/124696 cut-off events. For 1901220/1901264 co-relation queries the response was YES. Maximal size of possible extension queue 3113. Compared 1256563 event pairs, 13578 based on Foata normal form. 492/117337 useless extension candidates. Maximal degree in co-relation 812556. Up to 46766 conditions per place. [2023-08-30 10:22:41,261 INFO L137 encePairwiseOnDemand]: 654/670 looper letters, 1574 selfloop transitions, 743 changer transitions 0/2324 dead transitions. [2023-08-30 10:22:41,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 2324 transitions, 47235 flow [2023-08-30 10:22:41,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 10:22:41,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 10:22:41,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4484 transitions. [2023-08-30 10:22:41,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3936786654960492 [2023-08-30 10:22:41,264 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4484 transitions. [2023-08-30 10:22:41,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4484 transitions. [2023-08-30 10:22:41,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:22:41,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4484 transitions. [2023-08-30 10:22:41,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 263.7647058823529) internal successors, (4484), 17 states have internal predecessors, (4484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:41,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 670.0) internal successors, (12060), 18 states have internal predecessors, (12060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:41,272 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 670.0) internal successors, (12060), 18 states have internal predecessors, (12060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:22:41,272 INFO L175 Difference]: Start difference. First operand has 228 places, 1217 transitions, 24767 flow. Second operand 17 states and 4484 transitions. [2023-08-30 10:22:41,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 2324 transitions, 47235 flow [2023-08-30 10:23:15,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 2324 transitions, 46545 flow, removed 253 selfloop flow, removed 1 redundant places. [2023-08-30 10:23:15,164 INFO L231 Difference]: Finished difference. Result has 251 places, 1554 transitions, 35152 flow [2023-08-30 10:23:15,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=24103, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=402, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=683, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=35152, PETRI_PLACES=251, PETRI_TRANSITIONS=1554} [2023-08-30 10:23:15,165 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 137 predicate places. [2023-08-30 10:23:15,166 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 1554 transitions, 35152 flow [2023-08-30 10:23:15,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 246.52380952380952) internal successors, (5177), 21 states have internal predecessors, (5177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:15,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:23:15,167 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:23:15,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-30 10:23:15,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-08-30 10:23:15,373 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:23:15,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:23:15,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1462005458, now seen corresponding path program 1 times [2023-08-30 10:23:15,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:23:15,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146391443] [2023-08-30 10:23:15,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:23:15,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:23:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:23:15,558 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:23:15,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:23:15,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146391443] [2023-08-30 10:23:15,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146391443] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:23:15,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:23:15,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 10:23:15,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612202928] [2023-08-30 10:23:15,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:23:15,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:23:15,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:23:15,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:23:15,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:23:15,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 670 [2023-08-30 10:23:15,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 1554 transitions, 35152 flow. Second operand has 8 states, 8 states have (on average 285.5) internal successors, (2284), 8 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:23:15,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:23:15,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 670 [2023-08-30 10:23:15,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:18,015 INFO L130 PetriNetUnfolder]: 83790/150440 cut-off events. [2023-08-30 10:24:18,015 INFO L131 PetriNetUnfolder]: For 2690480/2690568 co-relation queries the response was YES. [2023-08-30 10:24:20,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1049898 conditions, 150440 events. 83790/150440 cut-off events. For 2690480/2690568 co-relation queries the response was YES. Maximal size of possible extension queue 3641. Compared 1551706 event pairs, 16081 based on Foata normal form. 11/141522 useless extension candidates. Maximal degree in co-relation 1049797. Up to 45762 conditions per place. [2023-08-30 10:24:20,868 INFO L137 encePairwiseOnDemand]: 649/670 looper letters, 1905 selfloop transitions, 1461 changer transitions 0/3373 dead transitions. [2023-08-30 10:24:20,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 3373 transitions, 75038 flow [2023-08-30 10:24:20,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 10:24:20,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 10:24:20,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 6694 transitions. [2023-08-30 10:24:20,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4541383989145183 [2023-08-30 10:24:20,872 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 6694 transitions. [2023-08-30 10:24:20,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 6694 transitions. [2023-08-30 10:24:20,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:20,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 6694 transitions. [2023-08-30 10:24:20,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 304.27272727272725) internal successors, (6694), 22 states have internal predecessors, (6694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:20,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 670.0) internal successors, (15410), 23 states have internal predecessors, (15410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:20,883 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 670.0) internal successors, (15410), 23 states have internal predecessors, (15410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:24:20,883 INFO L175 Difference]: Start difference. First operand has 251 places, 1554 transitions, 35152 flow. Second operand 22 states and 6694 transitions. [2023-08-30 10:24:20,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 3373 transitions, 75038 flow [2023-08-30 10:25:19,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 3373 transitions, 74599 flow, removed 118 selfloop flow, removed 5 redundant places. [2023-08-30 10:25:19,339 INFO L231 Difference]: Finished difference. Result has 286 places, 2483 transitions, 61650 flow [2023-08-30 10:25:19,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=35041, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=611, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=718, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=61650, PETRI_PLACES=286, PETRI_TRANSITIONS=2483} [2023-08-30 10:25:19,341 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 172 predicate places. [2023-08-30 10:25:19,341 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 2483 transitions, 61650 flow [2023-08-30 10:25:19,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 285.5) internal successors, (2284), 8 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:19,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:25:19,342 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:25:19,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-08-30 10:25:19,342 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:25:19,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:25:19,342 INFO L85 PathProgramCache]: Analyzing trace with hash 502976444, now seen corresponding path program 2 times [2023-08-30 10:25:19,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:25:19,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400104315] [2023-08-30 10:25:19,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:25:19,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:25:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:25:19,523 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:25:19,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:25:19,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400104315] [2023-08-30 10:25:19,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400104315] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:25:19,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:25:19,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 10:25:19,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027118285] [2023-08-30 10:25:19,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:25:19,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:25:19,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:25:19,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:25:19,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:25:19,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 670 [2023-08-30 10:25:19,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 2483 transitions, 61650 flow. Second operand has 8 states, 8 states have (on average 285.5) internal successors, (2284), 8 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:25:19,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:25:19,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 670 [2023-08-30 10:25:19,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:26:50,497 INFO L130 PetriNetUnfolder]: 93113/165981 cut-off events. [2023-08-30 10:26:50,497 INFO L131 PetriNetUnfolder]: For 3544661/3544825 co-relation queries the response was YES. [2023-08-30 10:26:53,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1252975 conditions, 165981 events. 93113/165981 cut-off events. For 3544661/3544825 co-relation queries the response was YES. Maximal size of possible extension queue 3999. Compared 1720956 event pairs, 14829 based on Foata normal form. 69/156001 useless extension candidates. Maximal degree in co-relation 1252857. Up to 48324 conditions per place. [2023-08-30 10:26:54,376 INFO L137 encePairwiseOnDemand]: 648/670 looper letters, 1482 selfloop transitions, 2304 changer transitions 0/3793 dead transitions. [2023-08-30 10:26:54,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 3793 transitions, 90723 flow [2023-08-30 10:26:54,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-30 10:26:54,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-30 10:26:54,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 7617 transitions. [2023-08-30 10:26:54,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4547462686567164 [2023-08-30 10:26:54,381 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 7617 transitions. [2023-08-30 10:26:54,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 7617 transitions. [2023-08-30 10:26:54,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:26:54,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 7617 transitions. [2023-08-30 10:26:54,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 304.68) internal successors, (7617), 25 states have internal predecessors, (7617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:26:54,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 670.0) internal successors, (17420), 26 states have internal predecessors, (17420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:26:54,400 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 670.0) internal successors, (17420), 26 states have internal predecessors, (17420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:26:54,400 INFO L175 Difference]: Start difference. First operand has 286 places, 2483 transitions, 61650 flow. Second operand 25 states and 7617 transitions. [2023-08-30 10:26:54,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 3793 transitions, 90723 flow [2023-08-30 10:28:50,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 3793 transitions, 89655 flow, removed 534 selfloop flow, removed 0 redundant places. [2023-08-30 10:28:50,137 INFO L231 Difference]: Finished difference. Result has 324 places, 2981 transitions, 80610 flow [2023-08-30 10:28:50,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=60650, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1850, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=80610, PETRI_PLACES=324, PETRI_TRANSITIONS=2981} [2023-08-30 10:28:50,140 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 210 predicate places. [2023-08-30 10:28:50,140 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 2981 transitions, 80610 flow [2023-08-30 10:28:50,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 285.5) internal successors, (2284), 8 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:28:50,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:28:50,141 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:28:50,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-08-30 10:28:50,141 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 10:28:50,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:28:50,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1021298414, now seen corresponding path program 3 times [2023-08-30 10:28:50,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:28:50,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805632355] [2023-08-30 10:28:50,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:28:50,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:28:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:28:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:28:50,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:28:50,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805632355] [2023-08-30 10:28:50,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805632355] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:28:50,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:28:50,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 10:28:50,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342768268] [2023-08-30 10:28:50,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:28:50,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:28:50,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:28:50,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:28:50,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:28:50,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 670 [2023-08-30 10:28:50,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 2981 transitions, 80610 flow. Second operand has 8 states, 8 states have (on average 286.5) internal successors, (2292), 8 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:28:50,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:28:50,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 670 [2023-08-30 10:28:50,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand