./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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/13-privatized_68-pfscan_protected_loop_minimal_interval_true.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 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 06:23:04,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:23:04,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:23:04,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:23:04,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:23:04,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:23:04,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:23:04,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:23:04,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:23:04,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:23:04,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:23:04,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:23:04,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:23:04,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:23:04,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:23:04,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:23:04,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:23:04,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:23:04,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:23:04,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:23:04,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:23:04,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:23:04,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:23:04,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:23:04,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:23:04,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:23:04,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:23:04,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:23:04,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:23:04,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:23:04,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:23:04,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:23:04,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:23:04,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:23:04,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:23:04,882 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:23:04,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:23:04,883 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:23:04,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:23:04,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:23:04,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:23:04,886 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:23:04,919 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:23:04,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:23:04,921 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:23:04,921 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:23:04,922 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:23:04,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:23:04,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:23:04,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:23:04,923 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:23:04,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:23:04,924 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:23:04,924 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:23:04,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:23:04,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:23:04,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:23:04,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:23:04,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:23:04,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:23:04,926 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:23:04,926 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:23:04,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:23:04,926 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:23:04,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:23:04,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:23:04,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:23:04,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:23:04,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:23:04,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:23:04,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:23:04,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:23:04,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:23:04,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:23:04,929 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:23:04,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:23:04,929 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:23:04,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:23:04,929 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:23:04,929 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:23:05,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:23:05,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:23:05,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:23:05,284 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:23:05,284 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:23:05,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-09-01 06:23:06,541 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:23:06,795 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:23:06,796 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-09-01 06:23:06,810 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac0c862ac/322a1aded5bd4844a15b24c93f0a6702/FLAG2e623805f [2023-09-01 06:23:06,827 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac0c862ac/322a1aded5bd4844a15b24c93f0a6702 [2023-09-01 06:23:06,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:23:06,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:23:06,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:23:06,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:23:06,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:23:06,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:23:06" (1/1) ... [2023-09-01 06:23:06,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@265c71e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:23:06, skipping insertion in model container [2023-09-01 06:23:06,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:23:06" (1/1) ... [2023-09-01 06:23:06,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:23:06,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:23:07,011 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/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2023-09-01 06:23:07,203 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:23:07,213 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:23:07,224 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/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2023-09-01 06:23:07,267 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:23:07,305 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:23:07,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:23:07 WrapperNode [2023-09-01 06:23:07,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:23:07,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:23:07,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:23:07,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:23:07,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:23:07" (1/1) ... [2023-09-01 06:23:07,342 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:23:07" (1/1) ... [2023-09-01 06:23:07,375 INFO L138 Inliner]: procedures = 165, calls = 35, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 124 [2023-09-01 06:23:07,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:23:07,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:23:07,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:23:07,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:23:07,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:23:07" (1/1) ... [2023-09-01 06:23:07,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:23:07" (1/1) ... [2023-09-01 06:23:07,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:23:07" (1/1) ... [2023-09-01 06:23:07,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:23:07" (1/1) ... [2023-09-01 06:23:07,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:23:07" (1/1) ... [2023-09-01 06:23:07,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:23:07" (1/1) ... [2023-09-01 06:23:07,422 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:23:07" (1/1) ... [2023-09-01 06:23:07,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:23:07" (1/1) ... [2023-09-01 06:23:07,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:23:07,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:23:07,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:23:07,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:23:07,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:23:07" (1/1) ... [2023-09-01 06:23:07,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:23:07,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:23:07,462 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) [2023-09-01 06:23:07,485 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 [2023-09-01 06:23:07,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:23:07,500 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-09-01 06:23:07,501 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-09-01 06:23:07,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:23:07,501 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:23:07,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:23:07,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:23:07,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:23:07,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 06:23:07,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:23:07,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:23:07,503 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 06:23:07,635 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:23:07,637 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:23:07,835 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:23:07,843 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:23:07,843 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-09-01 06:23:07,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:23:07 BoogieIcfgContainer [2023-09-01 06:23:07,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:23:07,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:23:07,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:23:07,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:23:07,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:23:06" (1/3) ... [2023-09-01 06:23:07,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5348e133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:23:07, skipping insertion in model container [2023-09-01 06:23:07,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:23:07" (2/3) ... [2023-09-01 06:23:07,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5348e133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:23:07, skipping insertion in model container [2023-09-01 06:23:07,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:23:07" (3/3) ... [2023-09-01 06:23:07,852 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-09-01 06:23:07,859 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:23:07,874 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:23:07,874 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-09-01 06:23:07,874 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:23:07,979 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:23:08,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 138 transitions, 281 flow [2023-09-01 06:23:08,076 INFO L130 PetriNetUnfolder]: 10/137 cut-off events. [2023-09-01 06:23:08,078 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:23:08,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 137 events. 10/137 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 256 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-09-01 06:23:08,085 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 138 transitions, 281 flow [2023-09-01 06:23:08,094 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 137 transitions, 277 flow [2023-09-01 06:23:08,097 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:23:08,112 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 137 transitions, 277 flow [2023-09-01 06:23:08,114 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 137 transitions, 277 flow [2023-09-01 06:23:08,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 137 transitions, 277 flow [2023-09-01 06:23:08,146 INFO L130 PetriNetUnfolder]: 10/137 cut-off events. [2023-09-01 06:23:08,150 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:23:08,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 137 events. 10/137 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 256 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-09-01 06:23:08,155 INFO L119 LiptonReduction]: Number of co-enabled transitions 4988 [2023-09-01 06:23:12,071 INFO L134 LiptonReduction]: Checked pairs total: 7411 [2023-09-01 06:23:12,072 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-09-01 06:23:12,085 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 06:23:12,091 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;@2131d8b7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:23:12,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-09-01 06:23:12,097 INFO L130 PetriNetUnfolder]: 4/21 cut-off events. [2023-09-01 06:23:12,097 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:23:12,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:23:12,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 06:23:12,099 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:23:12,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:23:12,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1151992810, now seen corresponding path program 1 times [2023-09-01 06:23:12,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:23:12,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709314149] [2023-09-01 06:23:12,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:23:12,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:23:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:23:12,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:12,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:23:12,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709314149] [2023-09-01 06:23:12,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709314149] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:23:12,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:23:12,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:23:12,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015017729] [2023-09-01 06:23:12,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:23:12,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:23:12,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:23:12,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:23:12,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:23:12,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 271 [2023-09-01 06:23:12,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 32 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:12,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:23:12,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 271 [2023-09-01 06:23:12,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:23:12,715 INFO L130 PetriNetUnfolder]: 218/399 cut-off events. [2023-09-01 06:23:12,715 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:23:12,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 399 events. 218/399 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1484 event pairs, 86 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 789. Up to 309 conditions per place. [2023-09-01 06:23:12,723 INFO L137 encePairwiseOnDemand]: 264/271 looper letters, 40 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2023-09-01 06:23:12,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 46 transitions, 183 flow [2023-09-01 06:23:12,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:23:12,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:23:12,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 421 transitions. [2023-09-01 06:23:12,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178351783517835 [2023-09-01 06:23:12,744 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 421 transitions. [2023-09-01 06:23:12,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 421 transitions. [2023-09-01 06:23:12,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:23:12,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 421 transitions. [2023-09-01 06:23:12,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:12,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 271.0) internal successors, (1084), 4 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:12,759 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 271.0) internal successors, (1084), 4 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:12,761 INFO L175 Difference]: Start difference. First operand has 30 places, 32 transitions, 67 flow. Second operand 3 states and 421 transitions. [2023-09-01 06:23:12,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 46 transitions, 183 flow [2023-09-01 06:23:12,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 46 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:23:12,766 INFO L231 Difference]: Finished difference. Result has 32 places, 33 transitions, 92 flow [2023-09-01 06:23:12,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=32, PETRI_TRANSITIONS=33} [2023-09-01 06:23:12,773 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-09-01 06:23:12,774 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 33 transitions, 92 flow [2023-09-01 06:23:12,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:12,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:23:12,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 06:23:12,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:23:12,775 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:23:12,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:23:12,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1151992811, now seen corresponding path program 1 times [2023-09-01 06:23:12,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:23:12,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010460908] [2023-09-01 06:23:12,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:23:12,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:23:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:23:13,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:13,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:23:13,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010460908] [2023-09-01 06:23:13,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010460908] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:23:13,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:23:13,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:23:13,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220727910] [2023-09-01 06:23:13,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:23:13,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 06:23:13,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:23:13,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 06:23:13,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 06:23:13,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 271 [2023-09-01 06:23:13,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 33 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 123.5) internal successors, (494), 4 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:13,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:23:13,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 271 [2023-09-01 06:23:13,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:23:13,316 INFO L130 PetriNetUnfolder]: 295/549 cut-off events. [2023-09-01 06:23:13,317 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-09-01 06:23:13,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1265 conditions, 549 events. 295/549 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2222 event pairs, 33 based on Foata normal form. 22/451 useless extension candidates. Maximal degree in co-relation 1255. Up to 410 conditions per place. [2023-09-01 06:23:13,320 INFO L137 encePairwiseOnDemand]: 265/271 looper letters, 56 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2023-09-01 06:23:13,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 64 transitions, 294 flow [2023-09-01 06:23:13,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 06:23:13,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 06:23:13,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 548 transitions. [2023-09-01 06:23:13,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5055350553505535 [2023-09-01 06:23:13,322 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 548 transitions. [2023-09-01 06:23:13,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 548 transitions. [2023-09-01 06:23:13,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:23:13,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 548 transitions. [2023-09-01 06:23:13,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:13,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 271.0) internal successors, (1355), 5 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:13,327 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 271.0) internal successors, (1355), 5 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:13,327 INFO L175 Difference]: Start difference. First operand has 32 places, 33 transitions, 92 flow. Second operand 4 states and 548 transitions. [2023-09-01 06:23:13,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 64 transitions, 294 flow [2023-09-01 06:23:13,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 64 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 06:23:13,331 INFO L231 Difference]: Finished difference. Result has 35 places, 38 transitions, 133 flow [2023-09-01 06:23:13,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=35, PETRI_TRANSITIONS=38} [2023-09-01 06:23:13,332 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-09-01 06:23:13,332 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 38 transitions, 133 flow [2023-09-01 06:23:13,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.5) internal successors, (494), 4 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:13,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:23:13,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:23:13,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:23:13,333 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:23:13,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:23:13,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1614499698, now seen corresponding path program 1 times [2023-09-01 06:23:13,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:23:13,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696923755] [2023-09-01 06:23:13,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:23:13,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:23:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:23:13,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:13,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:23:13,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696923755] [2023-09-01 06:23:13,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696923755] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:23:13,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:23:13,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:23:13,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525227865] [2023-09-01 06:23:13,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:23:13,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:23:13,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:23:13,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:23:13,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:23:13,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 271 [2023-09-01 06:23:13,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 38 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:13,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:23:13,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 271 [2023-09-01 06:23:13,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:23:13,523 INFO L130 PetriNetUnfolder]: 312/586 cut-off events. [2023-09-01 06:23:13,523 INFO L131 PetriNetUnfolder]: For 184/184 co-relation queries the response was YES. [2023-09-01 06:23:13,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1433 conditions, 586 events. 312/586 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2544 event pairs, 65 based on Foata normal form. 0/487 useless extension candidates. Maximal degree in co-relation 1420. Up to 357 conditions per place. [2023-09-01 06:23:13,526 INFO L137 encePairwiseOnDemand]: 264/271 looper letters, 48 selfloop transitions, 11 changer transitions 0/61 dead transitions. [2023-09-01 06:23:13,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 61 transitions, 334 flow [2023-09-01 06:23:13,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:23:13,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:23:13,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 417 transitions. [2023-09-01 06:23:13,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5129151291512916 [2023-09-01 06:23:13,529 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 417 transitions. [2023-09-01 06:23:13,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 417 transitions. [2023-09-01 06:23:13,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:23:13,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 417 transitions. [2023-09-01 06:23:13,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:13,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 271.0) internal successors, (1084), 4 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:13,532 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 271.0) internal successors, (1084), 4 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:13,533 INFO L175 Difference]: Start difference. First operand has 35 places, 38 transitions, 133 flow. Second operand 3 states and 417 transitions. [2023-09-01 06:23:13,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 61 transitions, 334 flow [2023-09-01 06:23:13,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 61 transitions, 332 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-09-01 06:23:13,535 INFO L231 Difference]: Finished difference. Result has 39 places, 45 transitions, 226 flow [2023-09-01 06:23:13,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=39, PETRI_TRANSITIONS=45} [2023-09-01 06:23:13,536 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2023-09-01 06:23:13,537 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 45 transitions, 226 flow [2023-09-01 06:23:13,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:13,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:23:13,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:23:13,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 06:23:13,538 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:23:13,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:23:13,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1614499699, now seen corresponding path program 1 times [2023-09-01 06:23:13,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:23:13,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659530187] [2023-09-01 06:23:13,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:23:13,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:23:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:23:13,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:13,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:23:13,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659530187] [2023-09-01 06:23:13,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659530187] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:23:13,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:23:13,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 06:23:13,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339829119] [2023-09-01 06:23:13,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:23:13,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 06:23:13,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:23:13,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 06:23:13,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 06:23:13,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 271 [2023-09-01 06:23:13,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 45 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:13,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:23:13,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 271 [2023-09-01 06:23:13,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:23:13,892 INFO L130 PetriNetUnfolder]: 296/558 cut-off events. [2023-09-01 06:23:13,892 INFO L131 PetriNetUnfolder]: For 472/472 co-relation queries the response was YES. [2023-09-01 06:23:13,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1547 conditions, 558 events. 296/558 cut-off events. For 472/472 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2115 event pairs, 115 based on Foata normal form. 20/547 useless extension candidates. Maximal degree in co-relation 1532. Up to 447 conditions per place. [2023-09-01 06:23:13,896 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 57 selfloop transitions, 7 changer transitions 3/69 dead transitions. [2023-09-01 06:23:13,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 69 transitions, 413 flow [2023-09-01 06:23:13,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 06:23:13,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 06:23:13,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 668 transitions. [2023-09-01 06:23:13,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4929889298892989 [2023-09-01 06:23:13,899 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 668 transitions. [2023-09-01 06:23:13,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 668 transitions. [2023-09-01 06:23:13,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:23:13,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 668 transitions. [2023-09-01 06:23:13,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.6) internal successors, (668), 5 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:13,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 271.0) internal successors, (1626), 6 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:13,904 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 271.0) internal successors, (1626), 6 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:13,904 INFO L175 Difference]: Start difference. First operand has 39 places, 45 transitions, 226 flow. Second operand 5 states and 668 transitions. [2023-09-01 06:23:13,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 69 transitions, 413 flow [2023-09-01 06:23:13,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 69 transitions, 388 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-09-01 06:23:13,908 INFO L231 Difference]: Finished difference. Result has 44 places, 46 transitions, 226 flow [2023-09-01 06:23:13,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=226, PETRI_PLACES=44, PETRI_TRANSITIONS=46} [2023-09-01 06:23:13,909 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2023-09-01 06:23:13,910 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 46 transitions, 226 flow [2023-09-01 06:23:13,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:13,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:23:13,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:23:13,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 06:23:13,911 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:23:13,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:23:13,911 INFO L85 PathProgramCache]: Analyzing trace with hash 2065148656, now seen corresponding path program 1 times [2023-09-01 06:23:13,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:23:13,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488934588] [2023-09-01 06:23:13,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:23:13,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:23:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:23:13,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:13,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:23:13,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488934588] [2023-09-01 06:23:13,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488934588] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:23:13,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:23:13,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 06:23:13,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587691369] [2023-09-01 06:23:13,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:23:13,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 06:23:13,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:23:13,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 06:23:13,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 06:23:13,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 271 [2023-09-01 06:23:13,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 46 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 124.25) internal successors, (497), 4 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:13,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:23:13,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 271 [2023-09-01 06:23:13,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:23:14,119 INFO L130 PetriNetUnfolder]: 343/640 cut-off events. [2023-09-01 06:23:14,119 INFO L131 PetriNetUnfolder]: For 497/497 co-relation queries the response was YES. [2023-09-01 06:23:14,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1825 conditions, 640 events. 343/640 cut-off events. For 497/497 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2729 event pairs, 78 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 1806. Up to 569 conditions per place. [2023-09-01 06:23:14,124 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 69 selfloop transitions, 3 changer transitions 1/74 dead transitions. [2023-09-01 06:23:14,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 74 transitions, 478 flow [2023-09-01 06:23:14,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 06:23:14,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 06:23:14,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 546 transitions. [2023-09-01 06:23:14,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503690036900369 [2023-09-01 06:23:14,127 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 546 transitions. [2023-09-01 06:23:14,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 546 transitions. [2023-09-01 06:23:14,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:23:14,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 546 transitions. [2023-09-01 06:23:14,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 136.5) internal successors, (546), 4 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:14,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 271.0) internal successors, (1355), 5 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:14,131 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 271.0) internal successors, (1355), 5 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:14,131 INFO L175 Difference]: Start difference. First operand has 44 places, 46 transitions, 226 flow. Second operand 4 states and 546 transitions. [2023-09-01 06:23:14,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 74 transitions, 478 flow [2023-09-01 06:23:14,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 74 transitions, 474 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-09-01 06:23:14,135 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 244 flow [2023-09-01 06:23:14,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=244, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2023-09-01 06:23:14,136 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2023-09-01 06:23:14,136 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 244 flow [2023-09-01 06:23:14,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.25) internal successors, (497), 4 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:14,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:23:14,137 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:23:14,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 06:23:14,137 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:23:14,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:23:14,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1739948279, now seen corresponding path program 1 times [2023-09-01 06:23:14,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:23:14,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254518821] [2023-09-01 06:23:14,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:23:14,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:23:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:23:14,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:14,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:23:14,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254518821] [2023-09-01 06:23:14,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254518821] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:23:14,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073377194] [2023-09-01 06:23:14,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:23:14,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:23:14,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:23:14,293 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) [2023-09-01 06:23:14,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 06:23:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:23:14,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 27 conjunts are in the unsatisfiable core [2023-09-01 06:23:14,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:23:14,623 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 [2023-09-01 06:23:14,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:14,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:23:14,773 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 32 treesize of output 28 [2023-09-01 06:23:14,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:14,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073377194] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:23:14,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:23:14,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2023-09-01 06:23:14,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457588663] [2023-09-01 06:23:14,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:23:14,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 06:23:14,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:23:14,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 06:23:14,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-09-01 06:23:15,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 271 [2023-09-01 06:23:15,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 244 flow. Second operand has 12 states, 12 states have (on average 124.5) internal successors, (1494), 12 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:15,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:23:15,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 271 [2023-09-01 06:23:15,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:23:15,246 INFO L130 PetriNetUnfolder]: 289/550 cut-off events. [2023-09-01 06:23:15,246 INFO L131 PetriNetUnfolder]: For 507/511 co-relation queries the response was YES. [2023-09-01 06:23:15,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1654 conditions, 550 events. 289/550 cut-off events. For 507/511 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2166 event pairs, 139 based on Foata normal form. 19/531 useless extension candidates. Maximal degree in co-relation 1632. Up to 519 conditions per place. [2023-09-01 06:23:15,251 INFO L137 encePairwiseOnDemand]: 268/271 looper letters, 45 selfloop transitions, 2 changer transitions 1/50 dead transitions. [2023-09-01 06:23:15,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 50 transitions, 344 flow [2023-09-01 06:23:15,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 06:23:15,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 06:23:15,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 521 transitions. [2023-09-01 06:23:15,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806273062730627 [2023-09-01 06:23:15,254 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 521 transitions. [2023-09-01 06:23:15,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 521 transitions. [2023-09-01 06:23:15,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:23:15,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 521 transitions. [2023-09-01 06:23:15,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 130.25) internal successors, (521), 4 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:15,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 271.0) internal successors, (1355), 5 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:15,258 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 271.0) internal successors, (1355), 5 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:15,258 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 244 flow. Second operand 4 states and 521 transitions. [2023-09-01 06:23:15,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 50 transitions, 344 flow [2023-09-01 06:23:15,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 50 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:23:15,262 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 236 flow [2023-09-01 06:23:15,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-09-01 06:23:15,265 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2023-09-01 06:23:15,265 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 236 flow [2023-09-01 06:23:15,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 124.5) internal successors, (1494), 12 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:15,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:23:15,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:23:15,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 06:23:15,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-09-01 06:23:15,472 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:23:15,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:23:15,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1050746213, now seen corresponding path program 1 times [2023-09-01 06:23:15,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:23:15,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653131346] [2023-09-01 06:23:15,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:23:15,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:23:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:23:15,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:15,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:23:15,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653131346] [2023-09-01 06:23:15,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653131346] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:23:15,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:23:15,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 06:23:15,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494644111] [2023-09-01 06:23:15,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:23:15,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 06:23:15,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:23:15,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 06:23:15,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 06:23:15,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 271 [2023-09-01 06:23:15,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 236 flow. Second operand has 5 states, 5 states have (on average 122.4) internal successors, (612), 5 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:15,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:23:15,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 271 [2023-09-01 06:23:15,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:23:15,975 INFO L130 PetriNetUnfolder]: 690/1305 cut-off events. [2023-09-01 06:23:15,976 INFO L131 PetriNetUnfolder]: For 1077/1094 co-relation queries the response was YES. [2023-09-01 06:23:15,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3832 conditions, 1305 events. 690/1305 cut-off events. For 1077/1094 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 6441 event pairs, 150 based on Foata normal form. 28/1240 useless extension candidates. Maximal degree in co-relation 3809. Up to 512 conditions per place. [2023-09-01 06:23:15,986 INFO L137 encePairwiseOnDemand]: 263/271 looper letters, 122 selfloop transitions, 18 changer transitions 0/142 dead transitions. [2023-09-01 06:23:15,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 142 transitions, 958 flow [2023-09-01 06:23:15,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 06:23:15,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 06:23:15,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 819 transitions. [2023-09-01 06:23:15,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503690036900369 [2023-09-01 06:23:15,989 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 819 transitions. [2023-09-01 06:23:15,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 819 transitions. [2023-09-01 06:23:15,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:23:15,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 819 transitions. [2023-09-01 06:23:16,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 136.5) internal successors, (819), 6 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:16,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 271.0) internal successors, (1897), 7 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:16,011 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 271.0) internal successors, (1897), 7 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:16,011 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 236 flow. Second operand 6 states and 819 transitions. [2023-09-01 06:23:16,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 142 transitions, 958 flow [2023-09-01 06:23:16,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 142 transitions, 953 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 06:23:16,018 INFO L231 Difference]: Finished difference. Result has 58 places, 63 transitions, 427 flow [2023-09-01 06:23:16,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=427, PETRI_PLACES=58, PETRI_TRANSITIONS=63} [2023-09-01 06:23:16,019 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2023-09-01 06:23:16,019 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 63 transitions, 427 flow [2023-09-01 06:23:16,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.4) internal successors, (612), 5 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:16,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:23:16,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:23:16,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 06:23:16,020 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:23:16,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:23:16,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1732615525, now seen corresponding path program 2 times [2023-09-01 06:23:16,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:23:16,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171745821] [2023-09-01 06:23:16,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:23:16,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:23:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:23:16,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:16,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:23:16,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171745821] [2023-09-01 06:23:16,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171745821] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:23:16,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:23:16,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 06:23:16,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673765637] [2023-09-01 06:23:16,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:23:16,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 06:23:16,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:23:16,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 06:23:16,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 06:23:16,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 271 [2023-09-01 06:23:16,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 427 flow. Second operand has 5 states, 5 states have (on average 123.4) internal successors, (617), 5 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:16,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:23:16,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 271 [2023-09-01 06:23:16,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:23:16,662 INFO L130 PetriNetUnfolder]: 1202/2259 cut-off events. [2023-09-01 06:23:16,662 INFO L131 PetriNetUnfolder]: For 4127/4153 co-relation queries the response was YES. [2023-09-01 06:23:16,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7797 conditions, 2259 events. 1202/2259 cut-off events. For 4127/4153 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 13033 event pairs, 409 based on Foata normal form. 26/2188 useless extension candidates. Maximal degree in co-relation 7771. Up to 1222 conditions per place. [2023-09-01 06:23:16,680 INFO L137 encePairwiseOnDemand]: 262/271 looper letters, 128 selfloop transitions, 30 changer transitions 2/162 dead transitions. [2023-09-01 06:23:16,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 162 transitions, 1331 flow [2023-09-01 06:23:16,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 06:23:16,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 06:23:16,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 943 transitions. [2023-09-01 06:23:16,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49710068529256723 [2023-09-01 06:23:16,683 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 943 transitions. [2023-09-01 06:23:16,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 943 transitions. [2023-09-01 06:23:16,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:23:16,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 943 transitions. [2023-09-01 06:23:16,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 134.71428571428572) internal successors, (943), 7 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:16,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 271.0) internal successors, (2168), 8 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:16,689 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 271.0) internal successors, (2168), 8 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:16,689 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 427 flow. Second operand 7 states and 943 transitions. [2023-09-01 06:23:16,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 162 transitions, 1331 flow [2023-09-01 06:23:16,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 162 transitions, 1321 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-09-01 06:23:16,699 INFO L231 Difference]: Finished difference. Result has 68 places, 88 transitions, 788 flow [2023-09-01 06:23:16,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=788, PETRI_PLACES=68, PETRI_TRANSITIONS=88} [2023-09-01 06:23:16,700 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2023-09-01 06:23:16,700 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 88 transitions, 788 flow [2023-09-01 06:23:16,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.4) internal successors, (617), 5 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:16,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:23:16,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:23:16,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 06:23:16,701 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:23:16,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:23:16,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1850682349, now seen corresponding path program 3 times [2023-09-01 06:23:16,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:23:16,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759194509] [2023-09-01 06:23:16,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:23:16,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:23:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:23:16,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:16,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:23:16,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759194509] [2023-09-01 06:23:16,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759194509] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:23:16,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:23:16,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 06:23:16,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954389454] [2023-09-01 06:23:16,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:23:16,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 06:23:16,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:23:16,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 06:23:16,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 06:23:16,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 271 [2023-09-01 06:23:16,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 88 transitions, 788 flow. Second operand has 5 states, 5 states have (on average 122.4) internal successors, (612), 5 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:16,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:23:16,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 271 [2023-09-01 06:23:16,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:23:17,277 INFO L130 PetriNetUnfolder]: 1181/2194 cut-off events. [2023-09-01 06:23:17,278 INFO L131 PetriNetUnfolder]: For 6729/6754 co-relation queries the response was YES. [2023-09-01 06:23:17,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8390 conditions, 2194 events. 1181/2194 cut-off events. For 6729/6754 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 12378 event pairs, 502 based on Foata normal form. 17/2119 useless extension candidates. Maximal degree in co-relation 8359. Up to 2089 conditions per place. [2023-09-01 06:23:17,297 INFO L137 encePairwiseOnDemand]: 267/271 looper letters, 92 selfloop transitions, 7 changer transitions 3/104 dead transitions. [2023-09-01 06:23:17,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 104 transitions, 1064 flow [2023-09-01 06:23:17,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 06:23:17,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 06:23:17,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 766 transitions. [2023-09-01 06:23:17,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710947109471095 [2023-09-01 06:23:17,300 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 766 transitions. [2023-09-01 06:23:17,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 766 transitions. [2023-09-01 06:23:17,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:23:17,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 766 transitions. [2023-09-01 06:23:17,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 127.66666666666667) internal successors, (766), 6 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:17,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 271.0) internal successors, (1897), 7 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:17,305 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 271.0) internal successors, (1897), 7 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:17,305 INFO L175 Difference]: Start difference. First operand has 68 places, 88 transitions, 788 flow. Second operand 6 states and 766 transitions. [2023-09-01 06:23:17,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 104 transitions, 1064 flow [2023-09-01 06:23:17,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 104 transitions, 1035 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 06:23:17,322 INFO L231 Difference]: Finished difference. Result has 70 places, 87 transitions, 763 flow [2023-09-01 06:23:17,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=763, PETRI_PLACES=70, PETRI_TRANSITIONS=87} [2023-09-01 06:23:17,323 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2023-09-01 06:23:17,323 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 87 transitions, 763 flow [2023-09-01 06:23:17,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.4) internal successors, (612), 5 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:17,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:23:17,324 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:23:17,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 06:23:17,324 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:23:17,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:23:17,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1896177130, now seen corresponding path program 1 times [2023-09-01 06:23:17,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:23:17,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885584980] [2023-09-01 06:23:17,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:23:17,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:23:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:23:17,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:17,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:23:17,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885584980] [2023-09-01 06:23:17,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885584980] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:23:17,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321143189] [2023-09-01 06:23:17,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:23:17,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:23:17,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:23:17,397 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) [2023-09-01 06:23:17,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 06:23:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:23:17,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 06:23:17,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:23:17,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:17,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 06:23:17,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321143189] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:23:17,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 06:23:17,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-09-01 06:23:17,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224231832] [2023-09-01 06:23:17,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:23:17,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 06:23:17,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:23:17,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 06:23:17,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-09-01 06:23:17,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 271 [2023-09-01 06:23:17,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 87 transitions, 763 flow. Second operand has 6 states, 6 states have (on average 124.16666666666667) internal successors, (745), 6 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) [2023-09-01 06:23:17,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:23:17,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 271 [2023-09-01 06:23:17,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:23:17,878 INFO L130 PetriNetUnfolder]: 1181/2128 cut-off events. [2023-09-01 06:23:17,879 INFO L131 PetriNetUnfolder]: For 6365/6365 co-relation queries the response was YES. [2023-09-01 06:23:17,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8265 conditions, 2128 events. 1181/2128 cut-off events. For 6365/6365 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 11711 event pairs, 165 based on Foata normal form. 0/2037 useless extension candidates. Maximal degree in co-relation 8234. Up to 1426 conditions per place. [2023-09-01 06:23:17,898 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 165 selfloop transitions, 6 changer transitions 1/173 dead transitions. [2023-09-01 06:23:17,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 173 transitions, 1824 flow [2023-09-01 06:23:17,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 06:23:17,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 06:23:17,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 799 transitions. [2023-09-01 06:23:17,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491389913899139 [2023-09-01 06:23:17,902 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 799 transitions. [2023-09-01 06:23:17,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 799 transitions. [2023-09-01 06:23:17,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:23:17,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 799 transitions. [2023-09-01 06:23:17,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 133.16666666666666) internal successors, (799), 6 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:17,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 271.0) internal successors, (1897), 7 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:17,908 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 271.0) internal successors, (1897), 7 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:17,908 INFO L175 Difference]: Start difference. First operand has 70 places, 87 transitions, 763 flow. Second operand 6 states and 799 transitions. [2023-09-01 06:23:17,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 173 transitions, 1824 flow [2023-09-01 06:23:17,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 173 transitions, 1806 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-09-01 06:23:17,922 INFO L231 Difference]: Finished difference. Result has 71 places, 86 transitions, 759 flow [2023-09-01 06:23:17,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=759, PETRI_PLACES=71, PETRI_TRANSITIONS=86} [2023-09-01 06:23:17,924 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2023-09-01 06:23:17,924 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 86 transitions, 759 flow [2023-09-01 06:23:17,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.16666666666667) internal successors, (745), 6 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) [2023-09-01 06:23:17,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:23:17,925 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:23:17,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 06:23:18,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-09-01 06:23:18,132 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:23:18,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:23:18,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1896176952, now seen corresponding path program 1 times [2023-09-01 06:23:18,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:23:18,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779288630] [2023-09-01 06:23:18,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:23:18,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:23:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:23:18,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:18,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:23:18,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779288630] [2023-09-01 06:23:18,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779288630] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:23:18,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764468267] [2023-09-01 06:23:18,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:23:18,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:23:18,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:23:18,201 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) [2023-09-01 06:23:18,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 06:23:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:23:18,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 06:23:18,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:23:18,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:18,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:23:18,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:18,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764468267] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:23:18,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:23:18,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-09-01 06:23:18,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647848642] [2023-09-01 06:23:18,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:23:18,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 06:23:18,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:23:18,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 06:23:18,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-09-01 06:23:18,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 271 [2023-09-01 06:23:18,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 86 transitions, 759 flow. Second operand has 12 states, 12 states have (on average 123.58333333333333) internal successors, (1483), 12 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:18,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:23:18,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 271 [2023-09-01 06:23:18,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:23:19,422 INFO L130 PetriNetUnfolder]: 3709/6643 cut-off events. [2023-09-01 06:23:19,422 INFO L131 PetriNetUnfolder]: For 20038/20038 co-relation queries the response was YES. [2023-09-01 06:23:19,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26708 conditions, 6643 events. 3709/6643 cut-off events. For 20038/20038 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 42537 event pairs, 512 based on Foata normal form. 269/6912 useless extension candidates. Maximal degree in co-relation 26679. Up to 1935 conditions per place. [2023-09-01 06:23:19,480 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 431 selfloop transitions, 12 changer transitions 2/446 dead transitions. [2023-09-01 06:23:19,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 446 transitions, 4739 flow [2023-09-01 06:23:19,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 06:23:19,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 06:23:19,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1366 transitions. [2023-09-01 06:23:19,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040590405904058 [2023-09-01 06:23:19,484 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1366 transitions. [2023-09-01 06:23:19,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1366 transitions. [2023-09-01 06:23:19,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:23:19,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1366 transitions. [2023-09-01 06:23:19,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 136.6) internal successors, (1366), 10 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:19,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 271.0) internal successors, (2981), 11 states have internal predecessors, (2981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:19,492 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 271.0) internal successors, (2981), 11 states have internal predecessors, (2981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:19,493 INFO L175 Difference]: Start difference. First operand has 71 places, 86 transitions, 759 flow. Second operand 10 states and 1366 transitions. [2023-09-01 06:23:19,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 446 transitions, 4739 flow [2023-09-01 06:23:19,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 446 transitions, 4724 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-09-01 06:23:19,520 INFO L231 Difference]: Finished difference. Result has 79 places, 95 transitions, 837 flow [2023-09-01 06:23:19,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=837, PETRI_PLACES=79, PETRI_TRANSITIONS=95} [2023-09-01 06:23:19,521 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2023-09-01 06:23:19,521 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 95 transitions, 837 flow [2023-09-01 06:23:19,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 123.58333333333333) internal successors, (1483), 12 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:19,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:23:19,522 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:23:19,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 06:23:19,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:23:19,728 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:23:19,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:23:19,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1150288132, now seen corresponding path program 1 times [2023-09-01 06:23:19,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:23:19,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761015866] [2023-09-01 06:23:19,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:23:19,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:23:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:23:19,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:19,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:23:19,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761015866] [2023-09-01 06:23:19,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761015866] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:23:19,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096037096] [2023-09-01 06:23:19,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:23:19,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:23:19,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:23:19,939 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) [2023-09-01 06:23:19,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 06:23:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:23:20,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 40 conjunts are in the unsatisfiable core [2023-09-01 06:23:20,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:23:20,163 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 [2023-09-01 06:23:20,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-09-01 06:23:20,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:20,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:23:20,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:20,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096037096] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 06:23:20,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 06:23:20,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 7] total 17 [2023-09-01 06:23:20,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459963042] [2023-09-01 06:23:20,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:23:20,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 06:23:20,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:23:20,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 06:23:20,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-09-01 06:23:20,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 271 [2023-09-01 06:23:20,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 95 transitions, 837 flow. Second operand has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:20,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:23:20,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 271 [2023-09-01 06:23:20,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:23:22,391 INFO L130 PetriNetUnfolder]: 5432/9774 cut-off events. [2023-09-01 06:23:22,391 INFO L131 PetriNetUnfolder]: For 35594/35594 co-relation queries the response was YES. [2023-09-01 06:23:22,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41501 conditions, 9774 events. 5432/9774 cut-off events. For 35594/35594 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 68619 event pairs, 837 based on Foata normal form. 125/9898 useless extension candidates. Maximal degree in co-relation 41470. Up to 4900 conditions per place. [2023-09-01 06:23:22,489 INFO L137 encePairwiseOnDemand]: 261/271 looper letters, 139 selfloop transitions, 63 changer transitions 1/204 dead transitions. [2023-09-01 06:23:22,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 204 transitions, 2112 flow [2023-09-01 06:23:22,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 06:23:22,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 06:23:22,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 657 transitions. [2023-09-01 06:23:22,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48487084870848707 [2023-09-01 06:23:22,494 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 657 transitions. [2023-09-01 06:23:22,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 657 transitions. [2023-09-01 06:23:22,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:23:22,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 657 transitions. [2023-09-01 06:23:22,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.4) internal successors, (657), 5 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:22,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 271.0) internal successors, (1626), 6 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:22,498 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 271.0) internal successors, (1626), 6 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:22,498 INFO L175 Difference]: Start difference. First operand has 79 places, 95 transitions, 837 flow. Second operand 5 states and 657 transitions. [2023-09-01 06:23:22,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 204 transitions, 2112 flow [2023-09-01 06:23:22,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 204 transitions, 2083 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-09-01 06:23:22,641 INFO L231 Difference]: Finished difference. Result has 85 places, 139 transitions, 1540 flow [2023-09-01 06:23:22,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1540, PETRI_PLACES=85, PETRI_TRANSITIONS=139} [2023-09-01 06:23:22,642 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2023-09-01 06:23:22,642 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 139 transitions, 1540 flow [2023-09-01 06:23:22,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:22,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:23:22,643 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:23:22,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 06:23:22,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:23:22,843 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:23:22,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:23:22,844 INFO L85 PathProgramCache]: Analyzing trace with hash -908990522, now seen corresponding path program 2 times [2023-09-01 06:23:22,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:23:22,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794190719] [2023-09-01 06:23:22,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:23:22,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:23:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:23:23,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 06:23:23,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:23:23,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794190719] [2023-09-01 06:23:23,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794190719] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:23:23,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:23:23,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 06:23:23,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224727951] [2023-09-01 06:23:23,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:23:23,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 06:23:23,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:23:23,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 06:23:23,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-09-01 06:23:23,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 271 [2023-09-01 06:23:23,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 139 transitions, 1540 flow. Second operand has 7 states, 7 states have (on average 118.57142857142857) internal successors, (830), 7 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) [2023-09-01 06:23:23,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:23:23,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 271 [2023-09-01 06:23:23,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:23:25,021 INFO L130 PetriNetUnfolder]: 6748/12584 cut-off events. [2023-09-01 06:23:25,021 INFO L131 PetriNetUnfolder]: For 72870/72870 co-relation queries the response was YES. [2023-09-01 06:23:25,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61651 conditions, 12584 events. 6748/12584 cut-off events. For 72870/72870 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 94990 event pairs, 2197 based on Foata normal form. 327/12910 useless extension candidates. Maximal degree in co-relation 61616. Up to 9045 conditions per place. [2023-09-01 06:23:25,122 INFO L137 encePairwiseOnDemand]: 260/271 looper letters, 184 selfloop transitions, 98 changer transitions 2/285 dead transitions. [2023-09-01 06:23:25,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 285 transitions, 3586 flow [2023-09-01 06:23:25,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 06:23:25,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 06:23:25,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1139 transitions. [2023-09-01 06:23:25,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46699466994669947 [2023-09-01 06:23:25,127 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1139 transitions. [2023-09-01 06:23:25,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1139 transitions. [2023-09-01 06:23:25,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:23:25,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1139 transitions. [2023-09-01 06:23:25,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.55555555555556) internal successors, (1139), 9 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:25,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 271.0) internal successors, (2710), 10 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:25,134 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 271.0) internal successors, (2710), 10 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:25,134 INFO L175 Difference]: Start difference. First operand has 85 places, 139 transitions, 1540 flow. Second operand 9 states and 1139 transitions. [2023-09-01 06:23:25,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 285 transitions, 3586 flow [2023-09-01 06:23:25,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 285 transitions, 3550 flow, removed 18 selfloop flow, removed 0 redundant places. [2023-09-01 06:23:25,306 INFO L231 Difference]: Finished difference. Result has 97 places, 204 transitions, 2788 flow [2023-09-01 06:23:25,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=1518, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2788, PETRI_PLACES=97, PETRI_TRANSITIONS=204} [2023-09-01 06:23:25,308 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 67 predicate places. [2023-09-01 06:23:25,308 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 204 transitions, 2788 flow [2023-09-01 06:23:25,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.57142857142857) internal successors, (830), 7 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) [2023-09-01 06:23:25,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:23:25,309 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:23:25,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 06:23:25,310 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:23:25,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:23:25,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1773811512, now seen corresponding path program 3 times [2023-09-01 06:23:25,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:23:25,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895067240] [2023-09-01 06:23:25,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:23:25,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:23:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:23:25,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 06:23:25,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:23:25,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895067240] [2023-09-01 06:23:25,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895067240] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:23:25,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:23:25,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 06:23:25,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864117084] [2023-09-01 06:23:25,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:23:25,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 06:23:25,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:23:25,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 06:23:25,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 06:23:25,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 271 [2023-09-01 06:23:25,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 204 transitions, 2788 flow. Second operand has 7 states, 7 states have (on average 118.57142857142857) internal successors, (830), 7 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) [2023-09-01 06:23:25,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:23:25,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 271 [2023-09-01 06:23:25,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:23:28,260 INFO L130 PetriNetUnfolder]: 8704/16732 cut-off events. [2023-09-01 06:23:28,260 INFO L131 PetriNetUnfolder]: For 126685/126685 co-relation queries the response was YES. [2023-09-01 06:23:28,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88741 conditions, 16732 events. 8704/16732 cut-off events. For 126685/126685 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 135430 event pairs, 2187 based on Foata normal form. 606/17337 useless extension candidates. Maximal degree in co-relation 88701. Up to 6932 conditions per place. [2023-09-01 06:23:28,456 INFO L137 encePairwiseOnDemand]: 258/271 looper letters, 282 selfloop transitions, 148 changer transitions 1/432 dead transitions. [2023-09-01 06:23:28,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 432 transitions, 6332 flow [2023-09-01 06:23:28,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 06:23:28,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 06:23:28,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1160 transitions. [2023-09-01 06:23:28,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756047560475605 [2023-09-01 06:23:28,568 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1160 transitions. [2023-09-01 06:23:28,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1160 transitions. [2023-09-01 06:23:28,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:23:28,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1160 transitions. [2023-09-01 06:23:28,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.88888888888889) internal successors, (1160), 9 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:28,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 271.0) internal successors, (2710), 10 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:28,575 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 271.0) internal successors, (2710), 10 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:28,575 INFO L175 Difference]: Start difference. First operand has 97 places, 204 transitions, 2788 flow. Second operand 9 states and 1160 transitions. [2023-09-01 06:23:28,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 432 transitions, 6332 flow [2023-09-01 06:23:28,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 432 transitions, 6121 flow, removed 104 selfloop flow, removed 1 redundant places. [2023-09-01 06:23:28,938 INFO L231 Difference]: Finished difference. Result has 109 places, 300 transitions, 4858 flow [2023-09-01 06:23:28,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=2660, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4858, PETRI_PLACES=109, PETRI_TRANSITIONS=300} [2023-09-01 06:23:28,939 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2023-09-01 06:23:28,939 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 300 transitions, 4858 flow [2023-09-01 06:23:28,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.57142857142857) internal successors, (830), 7 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) [2023-09-01 06:23:28,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:23:28,940 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:23:28,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 06:23:28,940 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:23:28,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:23:28,940 INFO L85 PathProgramCache]: Analyzing trace with hash 986208303, now seen corresponding path program 1 times [2023-09-01 06:23:28,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:23:28,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959276316] [2023-09-01 06:23:28,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:23:28,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:23:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:23:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 06:23:29,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:23:29,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959276316] [2023-09-01 06:23:29,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959276316] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:23:29,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:23:29,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 06:23:29,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236057880] [2023-09-01 06:23:29,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:23:29,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 06:23:29,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:23:29,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 06:23:29,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-09-01 06:23:29,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 271 [2023-09-01 06:23:29,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 300 transitions, 4858 flow. Second operand has 7 states, 7 states have (on average 118.57142857142857) internal successors, (830), 7 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) [2023-09-01 06:23:29,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:23:29,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 271 [2023-09-01 06:23:29,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:23:32,686 INFO L130 PetriNetUnfolder]: 10488/20155 cut-off events. [2023-09-01 06:23:32,686 INFO L131 PetriNetUnfolder]: For 209914/209914 co-relation queries the response was YES. [2023-09-01 06:23:32,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123339 conditions, 20155 events. 10488/20155 cut-off events. For 209914/209914 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 169340 event pairs, 3020 based on Foata normal form. 110/20264 useless extension candidates. Maximal degree in co-relation 123294. Up to 14860 conditions per place. [2023-09-01 06:23:33,042 INFO L137 encePairwiseOnDemand]: 262/271 looper letters, 291 selfloop transitions, 253 changer transitions 4/549 dead transitions. [2023-09-01 06:23:33,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 549 transitions, 9470 flow [2023-09-01 06:23:33,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 06:23:33,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 06:23:33,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1139 transitions. [2023-09-01 06:23:33,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46699466994669947 [2023-09-01 06:23:33,046 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1139 transitions. [2023-09-01 06:23:33,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1139 transitions. [2023-09-01 06:23:33,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:23:33,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1139 transitions. [2023-09-01 06:23:33,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.55555555555556) internal successors, (1139), 9 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:33,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 271.0) internal successors, (2710), 10 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:33,061 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 271.0) internal successors, (2710), 10 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:33,061 INFO L175 Difference]: Start difference. First operand has 109 places, 300 transitions, 4858 flow. Second operand 9 states and 1139 transitions. [2023-09-01 06:23:33,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 549 transitions, 9470 flow [2023-09-01 06:23:33,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 549 transitions, 9267 flow, removed 100 selfloop flow, removed 1 redundant places. [2023-09-01 06:23:33,716 INFO L231 Difference]: Finished difference. Result has 122 places, 434 transitions, 8178 flow [2023-09-01 06:23:33,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=4745, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8178, PETRI_PLACES=122, PETRI_TRANSITIONS=434} [2023-09-01 06:23:33,717 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2023-09-01 06:23:33,717 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 434 transitions, 8178 flow [2023-09-01 06:23:33,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.57142857142857) internal successors, (830), 7 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) [2023-09-01 06:23:33,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:23:33,718 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:23:33,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 06:23:33,718 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:23:33,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:23:33,719 INFO L85 PathProgramCache]: Analyzing trace with hash -224897961, now seen corresponding path program 2 times [2023-09-01 06:23:33,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:23:33,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355315921] [2023-09-01 06:23:33,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:23:33,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:23:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:23:33,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:33,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:23:33,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355315921] [2023-09-01 06:23:33,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355315921] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:23:33,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433740311] [2023-09-01 06:23:33,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 06:23:33,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:23:33,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:23:33,979 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) [2023-09-01 06:23:34,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 06:23:34,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 06:23:34,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:23:34,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 06:23:34,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:23:34,127 INFO L321 Elim1Store]: treesize reduction 16, result has 63.6 percent of original size [2023-09-01 06:23:34,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 43 [2023-09-01 06:23:34,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 06:23:34,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 06:23:34,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433740311] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:23:34,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 06:23:34,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2023-09-01 06:23:34,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417023486] [2023-09-01 06:23:34,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:23:34,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 06:23:34,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:23:34,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 06:23:34,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-09-01 06:23:34,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 271 [2023-09-01 06:23:34,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 434 transitions, 8178 flow. Second operand has 5 states, 5 states have (on average 122.4) internal successors, (612), 5 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:34,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:23:34,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 271 [2023-09-01 06:23:34,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:23:38,198 INFO L130 PetriNetUnfolder]: 11578/22112 cut-off events. [2023-09-01 06:23:38,198 INFO L131 PetriNetUnfolder]: For 304304/304304 co-relation queries the response was YES. [2023-09-01 06:23:38,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151142 conditions, 22112 events. 11578/22112 cut-off events. For 304304/304304 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 186693 event pairs, 2390 based on Foata normal form. 108/22219 useless extension candidates. Maximal degree in co-relation 151091. Up to 15160 conditions per place. [2023-09-01 06:23:38,448 INFO L137 encePairwiseOnDemand]: 265/271 looper letters, 264 selfloop transitions, 409 changer transitions 0/674 dead transitions. [2023-09-01 06:23:38,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 674 transitions, 13677 flow [2023-09-01 06:23:38,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 06:23:38,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 06:23:38,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 652 transitions. [2023-09-01 06:23:38,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48118081180811806 [2023-09-01 06:23:38,454 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 652 transitions. [2023-09-01 06:23:38,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 652 transitions. [2023-09-01 06:23:38,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:23:38,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 652 transitions. [2023-09-01 06:23:38,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.4) internal successors, (652), 5 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:38,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 271.0) internal successors, (1626), 6 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:38,461 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 271.0) internal successors, (1626), 6 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:38,462 INFO L175 Difference]: Start difference. First operand has 122 places, 434 transitions, 8178 flow. Second operand 5 states and 652 transitions. [2023-09-01 06:23:38,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 674 transitions, 13677 flow [2023-09-01 06:23:39,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 674 transitions, 13510 flow, removed 82 selfloop flow, removed 1 redundant places. [2023-09-01 06:23:39,895 INFO L231 Difference]: Finished difference. Result has 128 places, 608 transitions, 12952 flow [2023-09-01 06:23:39,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=8019, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12952, PETRI_PLACES=128, PETRI_TRANSITIONS=608} [2023-09-01 06:23:39,896 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2023-09-01 06:23:39,896 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 608 transitions, 12952 flow [2023-09-01 06:23:39,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.4) internal successors, (612), 5 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:39,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:23:39,896 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:23:39,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 06:23:40,101 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,SelfDestructingSolverStorable15 [2023-09-01 06:23:40,102 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:23:40,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:23:40,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1391139318, now seen corresponding path program 4 times [2023-09-01 06:23:40,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:23:40,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115418384] [2023-09-01 06:23:40,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:23:40,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:23:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:23:40,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 06:23:40,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:23:40,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115418384] [2023-09-01 06:23:40,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115418384] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:23:40,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716935003] [2023-09-01 06:23:40,288 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 06:23:40,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:23:40,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:23:40,290 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) [2023-09-01 06:23:40,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 06:23:40,380 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 06:23:40,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:23:40,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 22 conjunts are in the unsatisfiable core [2023-09-01 06:23:40,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:23:40,389 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 13 treesize of output 9 [2023-09-01 06:23:40,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 06:23:40,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 06:23:40,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716935003] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:23:40,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 06:23:40,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-09-01 06:23:40,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344532367] [2023-09-01 06:23:40,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:23:40,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:23:40,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:23:40,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:23:40,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-09-01 06:23:40,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 271 [2023-09-01 06:23:40,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 608 transitions, 12952 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:40,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:23:40,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 271 [2023-09-01 06:23:40,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:23:40,716 INFO L130 PetriNetUnfolder]: 364/837 cut-off events. [2023-09-01 06:23:40,716 INFO L131 PetriNetUnfolder]: For 10106/10106 co-relation queries the response was YES. [2023-09-01 06:23:40,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5120 conditions, 837 events. 364/837 cut-off events. For 10106/10106 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3894 event pairs, 12 based on Foata normal form. 158/994 useless extension candidates. Maximal degree in co-relation 5075. Up to 751 conditions per place. [2023-09-01 06:23:40,721 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 36 selfloop transitions, 15 changer transitions 6/58 dead transitions. [2023-09-01 06:23:40,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 58 transitions, 716 flow [2023-09-01 06:23:40,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:23:40,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:23:40,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2023-09-01 06:23:40,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4920049200492005 [2023-09-01 06:23:40,724 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2023-09-01 06:23:40,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2023-09-01 06:23:40,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:23:40,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2023-09-01 06:23:40,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:40,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 271.0) internal successors, (1084), 4 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:40,727 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 271.0) internal successors, (1084), 4 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:40,727 INFO L175 Difference]: Start difference. First operand has 128 places, 608 transitions, 12952 flow. Second operand 3 states and 400 transitions. [2023-09-01 06:23:40,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 58 transitions, 716 flow [2023-09-01 06:23:40,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 58 transitions, 509 flow, removed 56 selfloop flow, removed 31 redundant places. [2023-09-01 06:23:40,748 INFO L231 Difference]: Finished difference. Result has 79 places, 46 transitions, 347 flow [2023-09-01 06:23:40,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=347, PETRI_PLACES=79, PETRI_TRANSITIONS=46} [2023-09-01 06:23:40,748 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2023-09-01 06:23:40,748 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 46 transitions, 347 flow [2023-09-01 06:23:40,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:40,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:23:40,749 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:23:40,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 06:23:40,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-09-01 06:23:40,954 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:23:40,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:23:40,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1151240646, now seen corresponding path program 2 times [2023-09-01 06:23:40,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:23:40,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328149573] [2023-09-01 06:23:40,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:23:40,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:23:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:23:41,107 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:41,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:23:41,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328149573] [2023-09-01 06:23:41,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328149573] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:23:41,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297047706] [2023-09-01 06:23:41,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 06:23:41,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:23:41,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:23:41,110 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) [2023-09-01 06:23:41,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 06:23:41,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 06:23:41,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:23:41,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 06:23:41,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:23:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:41,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:23:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:41,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297047706] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:23:41,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:23:41,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-09-01 06:23:41,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426092581] [2023-09-01 06:23:41,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:23:41,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 06:23:41,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:23:41,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 06:23:41,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2023-09-01 06:23:41,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 271 [2023-09-01 06:23:41,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 46 transitions, 347 flow. Second operand has 24 states, 24 states have (on average 123.29166666666667) internal successors, (2959), 24 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:41,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:23:41,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 271 [2023-09-01 06:23:41,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:23:42,118 INFO L130 PetriNetUnfolder]: 500/1316 cut-off events. [2023-09-01 06:23:42,118 INFO L131 PetriNetUnfolder]: For 7372/7372 co-relation queries the response was YES. [2023-09-01 06:23:42,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6044 conditions, 1316 events. 500/1316 cut-off events. For 7372/7372 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 6924 event pairs, 29 based on Foata normal form. 192/1508 useless extension candidates. Maximal degree in co-relation 6018. Up to 337 conditions per place. [2023-09-01 06:23:42,126 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 320 selfloop transitions, 30 changer transitions 76/427 dead transitions. [2023-09-01 06:23:42,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 427 transitions, 4135 flow [2023-09-01 06:23:42,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-09-01 06:23:42,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-09-01 06:23:42,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2938 transitions. [2023-09-01 06:23:42,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49278765514927875 [2023-09-01 06:23:42,135 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2938 transitions. [2023-09-01 06:23:42,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2938 transitions. [2023-09-01 06:23:42,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:23:42,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2938 transitions. [2023-09-01 06:23:42,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 133.54545454545453) internal successors, (2938), 22 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:42,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 271.0) internal successors, (6233), 23 states have internal predecessors, (6233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:42,242 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 271.0) internal successors, (6233), 23 states have internal predecessors, (6233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:42,242 INFO L175 Difference]: Start difference. First operand has 79 places, 46 transitions, 347 flow. Second operand 22 states and 2938 transitions. [2023-09-01 06:23:42,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 427 transitions, 4135 flow [2023-09-01 06:23:42,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 427 transitions, 3437 flow, removed 158 selfloop flow, removed 8 redundant places. [2023-09-01 06:23:42,256 INFO L231 Difference]: Finished difference. Result has 94 places, 64 transitions, 524 flow [2023-09-01 06:23:42,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=524, PETRI_PLACES=94, PETRI_TRANSITIONS=64} [2023-09-01 06:23:42,257 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2023-09-01 06:23:42,257 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 64 transitions, 524 flow [2023-09-01 06:23:42,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 123.29166666666667) internal successors, (2959), 24 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:42,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:23:42,258 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:23:42,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 06:23:42,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:23:42,464 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:23:42,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:23:42,464 INFO L85 PathProgramCache]: Analyzing trace with hash 987548702, now seen corresponding path program 3 times [2023-09-01 06:23:42,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:23:42,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703768875] [2023-09-01 06:23:42,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:23:42,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:23:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:23:42,907 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:42,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:23:42,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703768875] [2023-09-01 06:23:42,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703768875] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:23:42,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194547027] [2023-09-01 06:23:42,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 06:23:42,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:23:42,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:23:42,909 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) [2023-09-01 06:23:42,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 06:23:43,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-09-01 06:23:43,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:23:43,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 42 conjunts are in the unsatisfiable core [2023-09-01 06:23:43,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:23:43,059 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 0 case distinctions, treesize of input 14 treesize of output 14 [2023-09-01 06:23:43,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 06:23:43,065 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 [2023-09-01 06:23:43,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-09-01 06:23:43,408 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 54 proven. 26 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-09-01 06:23:43,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:23:43,610 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 54 proven. 26 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-09-01 06:23:43,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194547027] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:23:43,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:23:43,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 6, 6] total 34 [2023-09-01 06:23:43,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702178666] [2023-09-01 06:23:43,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:23:43,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-09-01 06:23:43,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:23:43,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-09-01 06:23:43,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=920, Unknown=0, NotChecked=0, Total=1122 [2023-09-01 06:23:44,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 271 [2023-09-01 06:23:44,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 64 transitions, 524 flow. Second operand has 34 states, 34 states have (on average 113.41176470588235) internal successors, (3856), 34 states have internal predecessors, (3856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:44,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:23:44,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 271 [2023-09-01 06:23:44,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:23:45,738 INFO L130 PetriNetUnfolder]: 549/1453 cut-off events. [2023-09-01 06:23:45,738 INFO L131 PetriNetUnfolder]: For 8313/8313 co-relation queries the response was YES. [2023-09-01 06:23:45,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6669 conditions, 1453 events. 549/1453 cut-off events. For 8313/8313 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 7547 event pairs, 29 based on Foata normal form. 34/1487 useless extension candidates. Maximal degree in co-relation 6642. Up to 375 conditions per place. [2023-09-01 06:23:45,746 INFO L137 encePairwiseOnDemand]: 259/271 looper letters, 317 selfloop transitions, 88 changer transitions 96/502 dead transitions. [2023-09-01 06:23:45,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 502 transitions, 4092 flow [2023-09-01 06:23:45,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-09-01 06:23:45,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-09-01 06:23:45,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 5337 transitions. [2023-09-01 06:23:45,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43763837638376385 [2023-09-01 06:23:45,755 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 5337 transitions. [2023-09-01 06:23:45,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 5337 transitions. [2023-09-01 06:23:45,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:23:45,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 5337 transitions. [2023-09-01 06:23:45,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 118.6) internal successors, (5337), 45 states have internal predecessors, (5337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:45,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 271.0) internal successors, (12466), 46 states have internal predecessors, (12466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:45,779 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 271.0) internal successors, (12466), 46 states have internal predecessors, (12466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:45,779 INFO L175 Difference]: Start difference. First operand has 94 places, 64 transitions, 524 flow. Second operand 45 states and 5337 transitions. [2023-09-01 06:23:45,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 502 transitions, 4092 flow [2023-09-01 06:23:45,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 502 transitions, 3962 flow, removed 50 selfloop flow, removed 9 redundant places. [2023-09-01 06:23:45,801 INFO L231 Difference]: Finished difference. Result has 136 places, 118 transitions, 973 flow [2023-09-01 06:23:45,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=973, PETRI_PLACES=136, PETRI_TRANSITIONS=118} [2023-09-01 06:23:45,802 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2023-09-01 06:23:45,802 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 118 transitions, 973 flow [2023-09-01 06:23:45,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 113.41176470588235) internal successors, (3856), 34 states have internal predecessors, (3856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:45,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:23:45,803 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1] [2023-09-01 06:23:45,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 06:23:46,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:23:46,017 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:23:46,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:23:46,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1777636148, now seen corresponding path program 4 times [2023-09-01 06:23:46,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:23:46,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131967173] [2023-09-01 06:23:46,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:23:46,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:23:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:23:46,492 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:46,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:23:46,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131967173] [2023-09-01 06:23:46,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131967173] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:23:46,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939779980] [2023-09-01 06:23:46,492 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 06:23:46,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:23:46,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:23:46,494 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) [2023-09-01 06:23:46,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 06:23:46,691 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 06:23:46,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:23:46,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 06:23:46,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:23:46,781 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:46,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:23:47,323 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:47,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939779980] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:23:47,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:23:47,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 51 [2023-09-01 06:23:47,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536822780] [2023-09-01 06:23:47,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:23:47,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-09-01 06:23:47,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:23:47,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-09-01 06:23:47,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2023-09-01 06:23:47,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 271 [2023-09-01 06:23:47,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 118 transitions, 973 flow. Second operand has 52 states, 52 states have (on average 123.28846153846153) internal successors, (6411), 52 states have internal predecessors, (6411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:47,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:23:47,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 271 [2023-09-01 06:23:47,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:23:48,996 INFO L130 PetriNetUnfolder]: 1134/3052 cut-off events. [2023-09-01 06:23:48,996 INFO L131 PetriNetUnfolder]: For 40415/40415 co-relation queries the response was YES. [2023-09-01 06:23:49,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13817 conditions, 3052 events. 1134/3052 cut-off events. For 40415/40415 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 16818 event pairs, 29 based on Foata normal form. 416/3468 useless extension candidates. Maximal degree in co-relation 13783. Up to 791 conditions per place. [2023-09-01 06:23:49,019 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 755 selfloop transitions, 75 changer transitions 188/1019 dead transitions. [2023-09-01 06:23:49,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 1019 transitions, 9068 flow [2023-09-01 06:23:49,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-09-01 06:23:49,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-09-01 06:23:49,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 6697 transitions. [2023-09-01 06:23:49,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49424354243542434 [2023-09-01 06:23:49,028 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 6697 transitions. [2023-09-01 06:23:49,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 6697 transitions. [2023-09-01 06:23:49,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:23:49,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 6697 transitions. [2023-09-01 06:23:49,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 133.94) internal successors, (6697), 50 states have internal predecessors, (6697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:49,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 271.0) internal successors, (13821), 51 states have internal predecessors, (13821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:49,053 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 271.0) internal successors, (13821), 51 states have internal predecessors, (13821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:49,054 INFO L175 Difference]: Start difference. First operand has 136 places, 118 transitions, 973 flow. Second operand 50 states and 6697 transitions. [2023-09-01 06:23:49,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 1019 transitions, 9068 flow [2023-09-01 06:23:49,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 1019 transitions, 8938 flow, removed 30 selfloop flow, removed 23 redundant places. [2023-09-01 06:23:49,100 INFO L231 Difference]: Finished difference. Result has 175 places, 157 transitions, 1454 flow [2023-09-01 06:23:49,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=1454, PETRI_PLACES=175, PETRI_TRANSITIONS=157} [2023-09-01 06:23:49,101 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2023-09-01 06:23:49,101 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 157 transitions, 1454 flow [2023-09-01 06:23:49,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 123.28846153846153) internal successors, (6411), 52 states have internal predecessors, (6411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:49,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:23:49,103 INFO L208 CegarLoopForPetriNet]: trace histogram [25, 24, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1] [2023-09-01 06:23:49,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 06:23:49,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:23:49,309 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:23:49,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:23:49,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1160580830, now seen corresponding path program 5 times [2023-09-01 06:23:49,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:23:49,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311850978] [2023-09-01 06:23:49,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:23:49,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:23:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:23:50,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:50,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:23:50,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311850978] [2023-09-01 06:23:50,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311850978] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:23:50,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684019226] [2023-09-01 06:23:50,906 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 06:23:50,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:23:50,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:23:50,909 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) [2023-09-01 06:23:50,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 06:23:51,412 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-09-01 06:23:51,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:23:51,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 51 conjunts are in the unsatisfiable core [2023-09-01 06:23:51,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:23:51,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:51,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:23:53,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:23:53,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684019226] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:23:53,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:23:53,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 103 [2023-09-01 06:23:53,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702114052] [2023-09-01 06:23:53,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:23:53,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2023-09-01 06:23:53,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:23:53,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2023-09-01 06:23:53,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2755, Invalid=7957, Unknown=0, NotChecked=0, Total=10712 [2023-09-01 06:23:53,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 271 [2023-09-01 06:23:53,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 157 transitions, 1454 flow. Second operand has 104 states, 104 states have (on average 123.14423076923077) internal successors, (12807), 104 states have internal predecessors, (12807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:23:53,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:23:53,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 271 [2023-09-01 06:23:53,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:23:59,914 INFO L130 PetriNetUnfolder]: 2304/6250 cut-off events. [2023-09-01 06:23:59,914 INFO L131 PetriNetUnfolder]: For 288184/288184 co-relation queries the response was YES. [2023-09-01 06:23:59,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30180 conditions, 6250 events. 2304/6250 cut-off events. For 288184/288184 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 35210 event pairs, 29 based on Foata normal form. 832/7082 useless extension candidates. Maximal degree in co-relation 30132. Up to 1623 conditions per place. [2023-09-01 06:23:59,984 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 1561 selfloop transitions, 153 changer transitions 396/2111 dead transitions. [2023-09-01 06:23:59,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 2111 transitions, 18961 flow [2023-09-01 06:23:59,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-09-01 06:23:59,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2023-09-01 06:24:00,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 13678 transitions. [2023-09-01 06:24:00,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49482671297301206 [2023-09-01 06:24:00,016 INFO L72 ComplementDD]: Start complementDD. Operand 102 states and 13678 transitions. [2023-09-01 06:24:00,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 102 states and 13678 transitions. [2023-09-01 06:24:00,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:24:00,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 102 states and 13678 transitions. [2023-09-01 06:24:00,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 103 states, 102 states have (on average 134.09803921568627) internal successors, (13678), 102 states have internal predecessors, (13678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:00,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 103 states, 103 states have (on average 271.0) internal successors, (27913), 103 states have internal predecessors, (27913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:00,080 INFO L81 ComplementDD]: Finished complementDD. Result has 103 states, 103 states have (on average 271.0) internal successors, (27913), 103 states have internal predecessors, (27913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:00,080 INFO L175 Difference]: Start difference. First operand has 175 places, 157 transitions, 1454 flow. Second operand 102 states and 13678 transitions. [2023-09-01 06:24:00,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 2111 transitions, 18961 flow [2023-09-01 06:24:00,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 2111 transitions, 18430 flow, removed 226 selfloop flow, removed 24 redundant places. [2023-09-01 06:24:00,260 INFO L231 Difference]: Finished difference. Result has 278 places, 235 transitions, 2249 flow [2023-09-01 06:24:00,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=102, PETRI_FLOW=2249, PETRI_PLACES=278, PETRI_TRANSITIONS=235} [2023-09-01 06:24:00,260 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 248 predicate places. [2023-09-01 06:24:00,261 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 235 transitions, 2249 flow [2023-09-01 06:24:00,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 123.14423076923077) internal successors, (12807), 104 states have internal predecessors, (12807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:00,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:24:00,262 INFO L208 CegarLoopForPetriNet]: trace histogram [51, 50, 48, 48, 3, 3, 3, 3, 1, 1, 1, 1] [2023-09-01 06:24:00,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 06:24:00,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-09-01 06:24:00,463 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:24:00,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:24:00,464 INFO L85 PathProgramCache]: Analyzing trace with hash -789791746, now seen corresponding path program 6 times [2023-09-01 06:24:00,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:24:00,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611004458] [2023-09-01 06:24:00,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:24:00,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:24:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:24:06,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4962 backedges. 0 proven. 4962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:24:06,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:24:06,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611004458] [2023-09-01 06:24:06,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611004458] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:24:06,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608450065] [2023-09-01 06:24:06,394 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 06:24:06,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:24:06,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:24:06,395 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) [2023-09-01 06:24:06,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 06:24:06,787 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-09-01 06:24:06,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:24:06,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 72 conjunts are in the unsatisfiable core [2023-09-01 06:24:06,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:24:06,822 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 0 case distinctions, treesize of input 14 treesize of output 14 [2023-09-01 06:24:06,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 06:24:06,827 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 [2023-09-01 06:24:07,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-09-01 06:24:07,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-09-01 06:24:07,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-09-01 06:24:08,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4962 backedges. 97 proven. 447 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2023-09-01 06:24:08,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:24:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4962 backedges. 97 proven. 447 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2023-09-01 06:24:09,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608450065] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:24:09,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:24:09,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 12, 12] total 126 [2023-09-01 06:24:09,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049884509] [2023-09-01 06:24:09,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:24:09,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2023-09-01 06:24:09,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:24:09,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2023-09-01 06:24:09,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2951, Invalid=12799, Unknown=0, NotChecked=0, Total=15750 [2023-09-01 06:24:12,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 271 [2023-09-01 06:24:12,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 235 transitions, 2249 flow. Second operand has 126 states, 126 states have (on average 112.11904761904762) internal successors, (14127), 126 states have internal predecessors, (14127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:12,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:24:12,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 271 [2023-09-01 06:24:12,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:24:21,436 INFO L130 PetriNetUnfolder]: 2357/6401 cut-off events. [2023-09-01 06:24:21,436 INFO L131 PetriNetUnfolder]: For 109617/109617 co-relation queries the response was YES. [2023-09-01 06:24:21,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31530 conditions, 6401 events. 2357/6401 cut-off events. For 109617/109617 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 35515 event pairs, 30 based on Foata normal form. 36/6437 useless extension candidates. Maximal degree in co-relation 31457. Up to 1667 conditions per place. [2023-09-01 06:24:21,483 INFO L137 encePairwiseOnDemand]: 259/271 looper letters, 1423 selfloop transitions, 390 changer transitions 440/2254 dead transitions. [2023-09-01 06:24:21,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 2254 transitions, 19922 flow [2023-09-01 06:24:21,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2023-09-01 06:24:21,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2023-09-01 06:24:21,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 21602 transitions. [2023-09-01 06:24:21,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43558566733208315 [2023-09-01 06:24:21,504 INFO L72 ComplementDD]: Start complementDD. Operand 183 states and 21602 transitions. [2023-09-01 06:24:21,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 183 states and 21602 transitions. [2023-09-01 06:24:21,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:24:21,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 183 states and 21602 transitions. [2023-09-01 06:24:21,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 184 states, 183 states have (on average 118.04371584699453) internal successors, (21602), 183 states have internal predecessors, (21602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:21,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 184 states, 184 states have (on average 271.0) internal successors, (49864), 184 states have internal predecessors, (49864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:21,583 INFO L81 ComplementDD]: Finished complementDD. Result has 184 states, 184 states have (on average 271.0) internal successors, (49864), 184 states have internal predecessors, (49864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:21,583 INFO L175 Difference]: Start difference. First operand has 278 places, 235 transitions, 2249 flow. Second operand 183 states and 21602 transitions. [2023-09-01 06:24:21,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 2254 transitions, 19922 flow [2023-09-01 06:24:21,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 2254 transitions, 19484 flow, removed 136 selfloop flow, removed 49 redundant places. [2023-09-01 06:24:21,802 INFO L231 Difference]: Finished difference. Result has 428 places, 424 transitions, 4101 flow [2023-09-01 06:24:21,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=1833, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=183, PETRI_FLOW=4101, PETRI_PLACES=428, PETRI_TRANSITIONS=424} [2023-09-01 06:24:21,802 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 398 predicate places. [2023-09-01 06:24:21,802 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 424 transitions, 4101 flow [2023-09-01 06:24:21,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 126 states have (on average 112.11904761904762) internal successors, (14127), 126 states have internal predecessors, (14127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:21,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:24:21,804 INFO L208 CegarLoopForPetriNet]: trace histogram [52, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:24:21,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-09-01 06:24:22,005 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,SelfDestructingSolverStorable21 [2023-09-01 06:24:22,005 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:24:22,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:24:22,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1584149825, now seen corresponding path program 1 times [2023-09-01 06:24:22,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:24:22,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273523613] [2023-09-01 06:24:22,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:24:22,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:24:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:24:23,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 446 proven. 4 refuted. 0 times theorem prover too weak. 4803 trivial. 0 not checked. [2023-09-01 06:24:23,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:24:23,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273523613] [2023-09-01 06:24:23,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273523613] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:24:23,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501226171] [2023-09-01 06:24:23,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:24:23,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:24:23,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:24:23,280 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) [2023-09-01 06:24:23,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-09-01 06:24:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:24:23,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 1828 conjuncts, 105 conjunts are in the unsatisfiable core [2023-09-01 06:24:23,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:24:26,938 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:24:26,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:24:34,264 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:24:34,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501226171] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:24:34,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:24:34,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 105, 105] total 220 [2023-09-01 06:24:34,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726739429] [2023-09-01 06:24:34,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:24:34,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 220 states [2023-09-01 06:24:34,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:24:34,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2023-09-01 06:24:34,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11162, Invalid=37018, Unknown=0, NotChecked=0, Total=48180 [2023-09-01 06:24:39,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 271 [2023-09-01 06:24:39,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 424 transitions, 4101 flow. Second operand has 220 states, 220 states have (on average 106.10454545454546) internal successors, (23343), 220 states have internal predecessors, (23343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:39,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:24:39,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 271 [2023-09-01 06:24:39,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:27:34,058 INFO L130 PetriNetUnfolder]: 5674/15186 cut-off events. [2023-09-01 06:27:34,059 INFO L131 PetriNetUnfolder]: For 2800099/2800099 co-relation queries the response was YES. [2023-09-01 06:27:34,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74337 conditions, 15186 events. 5674/15186 cut-off events. For 2800099/2800099 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 84212 event pairs, 11 based on Foata normal form. 2118/17304 useless extension candidates. Maximal degree in co-relation 74247. Up to 3981 conditions per place. [2023-09-01 06:27:34,275 INFO L137 encePairwiseOnDemand]: 256/271 looper letters, 2710 selfloop transitions, 3220 changer transitions 1039/6970 dead transitions. [2023-09-01 06:27:34,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1786 places, 6970 transitions, 68752 flow [2023-09-01 06:27:34,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1359 states. [2023-09-01 06:27:34,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1359 states. [2023-09-01 06:27:34,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 147425 transitions. [2023-09-01 06:27:34,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40029704932810917 [2023-09-01 06:27:34,395 INFO L72 ComplementDD]: Start complementDD. Operand 1359 states and 147425 transitions. [2023-09-01 06:27:34,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1359 states and 147425 transitions. [2023-09-01 06:27:34,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:27:34,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 1359 states and 147425 transitions. [2023-09-01 06:27:34,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 1360 states, 1359 states have (on average 108.48050036791759) internal successors, (147425), 1359 states have internal predecessors, (147425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:27:35,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 1360 states, 1360 states have (on average 271.0) internal successors, (368560), 1360 states have internal predecessors, (368560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:27:35,193 INFO L81 ComplementDD]: Finished complementDD. Result has 1360 states, 1360 states have (on average 271.0) internal successors, (368560), 1360 states have internal predecessors, (368560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:27:35,194 INFO L175 Difference]: Start difference. First operand has 428 places, 424 transitions, 4101 flow. Second operand 1359 states and 147425 transitions. [2023-09-01 06:27:35,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1786 places, 6970 transitions, 68752 flow [2023-09-01 06:27:35,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1670 places, 6970 transitions, 66530 flow, removed 66 selfloop flow, removed 116 redundant places. [2023-09-01 06:27:36,056 INFO L231 Difference]: Finished difference. Result has 2192 places, 3351 transitions, 41531 flow [2023-09-01 06:27:36,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=3274, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=398, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=1359, PETRI_FLOW=41531, PETRI_PLACES=2192, PETRI_TRANSITIONS=3351} [2023-09-01 06:27:36,058 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2162 predicate places. [2023-09-01 06:27:36,058 INFO L495 AbstractCegarLoop]: Abstraction has has 2192 places, 3351 transitions, 41531 flow [2023-09-01 06:27:36,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 220 states, 220 states have (on average 106.10454545454546) internal successors, (23343), 220 states have internal predecessors, (23343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:27:36,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:27:36,061 INFO L208 CegarLoopForPetriNet]: trace histogram [105, 104, 103, 103, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:27:36,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-09-01 06:27:36,262 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,SelfDestructingSolverStorable22 [2023-09-01 06:27:36,262 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:27:36,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:27:36,263 INFO L85 PathProgramCache]: Analyzing trace with hash -199603345, now seen corresponding path program 2 times [2023-09-01 06:27:36,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:27:36,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240302089] [2023-09-01 06:27:36,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:27:36,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:27:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:27:56,261 INFO L134 CoverageAnalysis]: Checked inductivity of 21636 backedges. 0 proven. 21636 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:27:56,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:27:56,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240302089] [2023-09-01 06:27:56,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240302089] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:27:56,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300369930] [2023-09-01 06:27:56,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 06:27:56,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:27:56,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:27:56,265 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) [2023-09-01 06:27:56,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-09-01 06:27:56,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 06:27:56,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:27:56,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 3534 conjuncts, 211 conjunts are in the unsatisfiable core [2023-09-01 06:27:56,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:27:57,545 INFO L134 CoverageAnalysis]: Checked inductivity of 21636 backedges. 0 proven. 21636 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:27:57,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:28:25,197 INFO L134 CoverageAnalysis]: Checked inductivity of 21636 backedges. 0 proven. 21636 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:28:25,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300369930] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:28:25,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:28:25,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [211, 211, 211] total 423 [2023-09-01 06:28:25,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781342316] [2023-09-01 06:28:25,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:28:25,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 424 states [2023-09-01 06:28:25,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:28:25,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 424 interpolants. [2023-09-01 06:28:25,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45155, Invalid=134197, Unknown=0, NotChecked=0, Total=179352 [2023-09-01 06:28:29,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 271 [2023-09-01 06:28:29,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2192 places, 3351 transitions, 41531 flow. Second operand has 424 states, 424 states have (on average 123.05896226415095) internal successors, (52177), 424 states have internal predecessors, (52177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:28:29,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:28:29,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 271 [2023-09-01 06:28:29,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:33:47,000 INFO L130 PetriNetUnfolder]: 10968/30090 cut-off events. [2023-09-01 06:33:47,000 INFO L131 PetriNetUnfolder]: For 236427145/236427145 co-relation queries the response was YES. [2023-09-01 06:33:51,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545793 conditions, 30090 events. 10968/30090 cut-off events. For 236427145/236427145 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 172436 event pairs, 35 based on Foata normal form. 4028/34118 useless extension candidates. Maximal degree in co-relation 545181. Up to 7991 conditions per place. [2023-09-01 06:33:51,866 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 7779 selfloop transitions, 1891 changer transitions 1681/11352 dead transitions. [2023-09-01 06:33:51,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2613 places, 11352 transitions, 349947 flow [2023-09-01 06:33:51,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 422 states. [2023-09-01 06:33:51,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2023-09-01 06:33:51,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 56636 transitions. [2023-09-01 06:33:51,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.495234431017296 [2023-09-01 06:33:51,896 INFO L72 ComplementDD]: Start complementDD. Operand 422 states and 56636 transitions. [2023-09-01 06:33:51,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 422 states and 56636 transitions. [2023-09-01 06:33:51,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:33:51,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 422 states and 56636 transitions. [2023-09-01 06:33:51,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 423 states, 422 states have (on average 134.20853080568722) internal successors, (56636), 422 states have internal predecessors, (56636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:33:52,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 423 states, 423 states have (on average 271.0) internal successors, (114633), 423 states have internal predecessors, (114633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:33:52,057 INFO L81 ComplementDD]: Finished complementDD. Result has 423 states, 423 states have (on average 271.0) internal successors, (114633), 423 states have internal predecessors, (114633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:33:52,058 INFO L175 Difference]: Start difference. First operand has 2192 places, 3351 transitions, 41531 flow. Second operand 422 states and 56636 transitions. [2023-09-01 06:33:52,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2613 places, 11352 transitions, 349947 flow Killed by 15