./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-array-int-symm.wvr.c --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/weaver/chl-array-int-symm.wvr.c -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 b78a1de0122078b80177387d59eedcdf8d73ccef913955b4bda0200e53e1d3da --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 07:21:03,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:21:03,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:21:03,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:21:03,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:21:03,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:21:03,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:21:03,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:21:03,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:21:03,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:21:03,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:21:03,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:21:03,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:21:03,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:21:03,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:21:03,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:21:03,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:21:03,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:21:03,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:21:03,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:21:03,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:21:03,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:21:03,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:21:03,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:21:03,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:21:03,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:21:03,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:21:03,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:21:03,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:21:03,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:21:03,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:21:03,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:21:03,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:21:03,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:21:03,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:21:03,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:21:03,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:21:03,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:21:03,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:21:03,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:21:03,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:21:03,862 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:21:03,898 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:21:03,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:21:03,900 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:21:03,900 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:21:03,901 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:21:03,901 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:21:03,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:21:03,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:21:03,902 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:21:03,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:21:03,903 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:21:03,904 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:21:03,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:21:03,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:21:03,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:21:03,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:21:03,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:21:03,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:21:03,905 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:21:03,905 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:21:03,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:21:03,905 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:21:03,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:21:03,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:21:03,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:21:03,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:21:03,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:21:03,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:21:03,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:21:03,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:21:03,907 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:21:03,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:21:03,908 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:21:03,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:21:03,908 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:21:03,908 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:21:03,909 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:21:03,909 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b78a1de0122078b80177387d59eedcdf8d73ccef913955b4bda0200e53e1d3da Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:21:04,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:21:04,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:21:04,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:21:04,245 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:21:04,245 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:21:04,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-symm.wvr.c [2023-09-01 07:21:05,350 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:21:05,573 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:21:05,573 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-symm.wvr.c [2023-09-01 07:21:05,579 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25d5d07e7/550965df80704fdab80ab1ee0939c54c/FLAG7bd67f769 [2023-09-01 07:21:05,941 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25d5d07e7/550965df80704fdab80ab1ee0939c54c [2023-09-01 07:21:05,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:21:05,944 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:21:05,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:21:05,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:21:05,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:21:05,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:21:05" (1/1) ... [2023-09-01 07:21:05,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5148c7f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:05, skipping insertion in model container [2023-09-01 07:21:05,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:21:05" (1/1) ... [2023-09-01 07:21:05,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:21:05,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:21:06,183 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-symm.wvr.c[2482,2495] [2023-09-01 07:21:06,193 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:21:06,206 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:21:06,251 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-symm.wvr.c[2482,2495] [2023-09-01 07:21:06,256 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:21:06,279 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:21:06,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:06 WrapperNode [2023-09-01 07:21:06,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:21:06,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:21:06,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:21:06,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:21:06,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:06" (1/1) ... [2023-09-01 07:21:06,308 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:06" (1/1) ... [2023-09-01 07:21:06,354 INFO L138 Inliner]: procedures = 25, calls = 39, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 242 [2023-09-01 07:21:06,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:21:06,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:21:06,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:21:06,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:21:06,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:06" (1/1) ... [2023-09-01 07:21:06,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:06" (1/1) ... [2023-09-01 07:21:06,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:06" (1/1) ... [2023-09-01 07:21:06,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:06" (1/1) ... [2023-09-01 07:21:06,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:06" (1/1) ... [2023-09-01 07:21:06,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:06" (1/1) ... [2023-09-01 07:21:06,402 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:06" (1/1) ... [2023-09-01 07:21:06,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:06" (1/1) ... [2023-09-01 07:21:06,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:21:06,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:21:06,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:21:06,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:21:06,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:06" (1/1) ... [2023-09-01 07:21:06,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:21:06,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:21:06,458 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 07:21:06,475 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 07:21:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:21:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:21:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:21:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:21:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 07:21:06,499 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 07:21:06,500 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 07:21:06,500 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 07:21:06,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:21:06,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 07:21:06,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:21:06,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:21:06,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:21:06,502 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 07:21:06,641 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:21:06,642 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:21:06,993 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:21:07,002 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:21:07,003 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 07:21:07,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:21:07 BoogieIcfgContainer [2023-09-01 07:21:07,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:21:07,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:21:07,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:21:07,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:21:07,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:21:05" (1/3) ... [2023-09-01 07:21:07,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6d517c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:21:07, skipping insertion in model container [2023-09-01 07:21:07,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:06" (2/3) ... [2023-09-01 07:21:07,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6d517c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:21:07, skipping insertion in model container [2023-09-01 07:21:07,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:21:07" (3/3) ... [2023-09-01 07:21:07,017 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2023-09-01 07:21:07,024 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:21:07,038 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:21:07,039 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-09-01 07:21:07,039 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:21:07,144 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 07:21:07,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 297 transitions, 610 flow [2023-09-01 07:21:07,318 INFO L130 PetriNetUnfolder]: 25/295 cut-off events. [2023-09-01 07:21:07,319 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 07:21:07,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 295 events. 25/295 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 602 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 188. Up to 3 conditions per place. [2023-09-01 07:21:07,327 INFO L82 GeneralOperation]: Start removeDead. Operand has 279 places, 297 transitions, 610 flow [2023-09-01 07:21:07,338 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 252 places, 267 transitions, 543 flow [2023-09-01 07:21:07,343 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:21:07,356 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 252 places, 267 transitions, 543 flow [2023-09-01 07:21:07,363 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 252 places, 267 transitions, 543 flow [2023-09-01 07:21:07,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 267 transitions, 543 flow [2023-09-01 07:21:07,421 INFO L130 PetriNetUnfolder]: 22/267 cut-off events. [2023-09-01 07:21:07,422 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 07:21:07,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 267 events. 22/267 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 475 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 188. Up to 3 conditions per place. [2023-09-01 07:21:07,433 INFO L119 LiptonReduction]: Number of co-enabled transitions 13172 [2023-09-01 07:21:19,484 INFO L134 LiptonReduction]: Checked pairs total: 16219 [2023-09-01 07:21:19,484 INFO L136 LiptonReduction]: Total number of compositions: 345 [2023-09-01 07:21:19,497 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 07:21:19,502 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;@1836ba00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:21:19,503 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2023-09-01 07:21:19,505 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 07:21:19,505 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:21:19,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:19,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 07:21:19,506 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:21:19,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:19,510 INFO L85 PathProgramCache]: Analyzing trace with hash 38689, now seen corresponding path program 1 times [2023-09-01 07:21:19,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:19,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27217304] [2023-09-01 07:21:19,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:19,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:19,786 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 07:21:19,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:19,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27217304] [2023-09-01 07:21:19,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27217304] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:19,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:21:19,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:21:19,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138829263] [2023-09-01 07:21:19,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:19,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:21:19,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:19,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:21:19,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:21:19,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 642 [2023-09-01 07:21:19,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 0 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 07:21:19,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:19,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 642 [2023-09-01 07:21:19,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:20,217 INFO L130 PetriNetUnfolder]: 1077/1803 cut-off events. [2023-09-01 07:21:20,218 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2023-09-01 07:21:20,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3692 conditions, 1803 events. 1077/1803 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 9656 event pairs, 918 based on Foata normal form. 0/775 useless extension candidates. Maximal degree in co-relation 1728. Up to 905 conditions per place. [2023-09-01 07:21:20,229 INFO L137 encePairwiseOnDemand]: 630/642 looper letters, 73 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2023-09-01 07:21:20,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 77 transitions, 326 flow [2023-09-01 07:21:20,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:21:20,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:21:20,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 902 transitions. [2023-09-01 07:21:20,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4683281412253375 [2023-09-01 07:21:20,247 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 902 transitions. [2023-09-01 07:21:20,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 902 transitions. [2023-09-01 07:21:20,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:20,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 902 transitions. [2023-09-01 07:21:20,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 300.6666666666667) internal successors, (902), 3 states have internal predecessors, (902), 0 states have call successors, (0), 0 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 07:21:20,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 642.0) internal successors, (2568), 4 states have internal predecessors, (2568), 0 states have call successors, (0), 0 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 07:21:20,269 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 642.0) internal successors, (2568), 4 states have internal predecessors, (2568), 0 states have call successors, (0), 0 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 07:21:20,272 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 99 flow. Second operand 3 states and 902 transitions. [2023-09-01 07:21:20,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 77 transitions, 326 flow [2023-09-01 07:21:20,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 77 transitions, 316 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 07:21:20,278 INFO L231 Difference]: Finished difference. Result has 44 places, 44 transitions, 122 flow [2023-09-01 07:21:20,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=44, PETRI_TRANSITIONS=44} [2023-09-01 07:21:20,284 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2023-09-01 07:21:20,285 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 122 flow [2023-09-01 07:21:20,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 0 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 07:21:20,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:20,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:21:20,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:21:20,288 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:21:20,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:20,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1202799, now seen corresponding path program 1 times [2023-09-01 07:21:20,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:20,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549127833] [2023-09-01 07:21:20,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:20,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:20,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:20,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:20,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549127833] [2023-09-01 07:21:20,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549127833] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:21:20,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21275251] [2023-09-01 07:21:20,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:20,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:20,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:21:20,390 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 07:21:20,413 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 07:21:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:20,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:21:20,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:21:20,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:20,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:21:20,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:20,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21275251] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:21:20,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:21:20,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 07:21:20,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125282753] [2023-09-01 07:21:20,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:21:20,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 07:21:20,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:20,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 07:21:20,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:21:20,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 642 [2023-09-01 07:21:20,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 122 flow. Second operand has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 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 07:21:20,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:20,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 642 [2023-09-01 07:21:20,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:21,418 INFO L130 PetriNetUnfolder]: 2697/4506 cut-off events. [2023-09-01 07:21:21,420 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-09-01 07:21:21,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9194 conditions, 4506 events. 2697/4506 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 27270 event pairs, 2295 based on Foata normal form. 0/1946 useless extension candidates. Maximal degree in co-relation 7311. Up to 903 conditions per place. [2023-09-01 07:21:21,443 INFO L137 encePairwiseOnDemand]: 634/642 looper letters, 170 selfloop transitions, 21 changer transitions 0/191 dead transitions. [2023-09-01 07:21:21,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 191 transitions, 850 flow [2023-09-01 07:21:21,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:21:21,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:21:21,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2094 transitions. [2023-09-01 07:21:21,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.465954606141522 [2023-09-01 07:21:21,451 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2094 transitions. [2023-09-01 07:21:21,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2094 transitions. [2023-09-01 07:21:21,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:21,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2094 transitions. [2023-09-01 07:21:21,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 299.14285714285717) internal successors, (2094), 7 states have internal predecessors, (2094), 0 states have call successors, (0), 0 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 07:21:21,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 642.0) internal successors, (5136), 8 states have internal predecessors, (5136), 0 states have call successors, (0), 0 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 07:21:21,466 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 642.0) internal successors, (5136), 8 states have internal predecessors, (5136), 0 states have call successors, (0), 0 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 07:21:21,466 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 122 flow. Second operand 7 states and 2094 transitions. [2023-09-01 07:21:21,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 191 transitions, 850 flow [2023-09-01 07:21:21,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 191 transitions, 836 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:21:21,472 INFO L231 Difference]: Finished difference. Result has 51 places, 59 transitions, 253 flow [2023-09-01 07:21:21,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=253, PETRI_PLACES=51, PETRI_TRANSITIONS=59} [2023-09-01 07:21:21,473 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 4 predicate places. [2023-09-01 07:21:21,473 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 59 transitions, 253 flow [2023-09-01 07:21:21,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 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 07:21:21,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:21,474 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-09-01 07:21:21,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 07:21:21,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:21,681 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:21:21,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:21,682 INFO L85 PathProgramCache]: Analyzing trace with hash 37289281, now seen corresponding path program 1 times [2023-09-01 07:21:21,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:21,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567486696] [2023-09-01 07:21:21,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:21,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:21,787 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 07:21:21,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:21,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567486696] [2023-09-01 07:21:21,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567486696] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:21:21,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775446864] [2023-09-01 07:21:21,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:21,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:21,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:21:21,790 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 07:21:21,792 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 07:21:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:21,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:21:21,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:21:21,881 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 07:21:21,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:21:21,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775446864] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:21,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:21:21,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 07:21:21,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926552155] [2023-09-01 07:21:21,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:21,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:21:21,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:21,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:21:21,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 07:21:21,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 642 [2023-09-01 07:21:21,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 59 transitions, 253 flow. Second operand has 5 states, 5 states have (on average 271.8) internal successors, (1359), 5 states have internal predecessors, (1359), 0 states have call successors, (0), 0 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 07:21:21,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:21,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 642 [2023-09-01 07:21:21,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:22,562 INFO L130 PetriNetUnfolder]: 2691/4498 cut-off events. [2023-09-01 07:21:22,563 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-09-01 07:21:22,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9196 conditions, 4498 events. 2691/4498 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 27438 event pairs, 2295 based on Foata normal form. 2/1948 useless extension candidates. Maximal degree in co-relation 5498. Up to 2698 conditions per place. [2023-09-01 07:21:22,586 INFO L137 encePairwiseOnDemand]: 636/642 looper letters, 108 selfloop transitions, 9 changer transitions 0/117 dead transitions. [2023-09-01 07:21:22,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 117 transitions, 573 flow [2023-09-01 07:21:22,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:21:22,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:21:22,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1470 transitions. [2023-09-01 07:21:22,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45794392523364486 [2023-09-01 07:21:22,591 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1470 transitions. [2023-09-01 07:21:22,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1470 transitions. [2023-09-01 07:21:22,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:22,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1470 transitions. [2023-09-01 07:21:22,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 0 states have call successors, (0), 0 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 07:21:22,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 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 07:21:22,603 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 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 07:21:22,603 INFO L175 Difference]: Start difference. First operand has 51 places, 59 transitions, 253 flow. Second operand 5 states and 1470 transitions. [2023-09-01 07:21:22,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 117 transitions, 573 flow [2023-09-01 07:21:22,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 117 transitions, 554 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 07:21:22,607 INFO L231 Difference]: Finished difference. Result has 51 places, 51 transitions, 198 flow [2023-09-01 07:21:22,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=51, PETRI_TRANSITIONS=51} [2023-09-01 07:21:22,608 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 4 predicate places. [2023-09-01 07:21:22,608 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 51 transitions, 198 flow [2023-09-01 07:21:22,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 271.8) internal successors, (1359), 5 states have internal predecessors, (1359), 0 states have call successors, (0), 0 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 07:21:22,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:22,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 07:21:22,619 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 07:21:22,815 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,SelfDestructingSolverStorable2 [2023-09-01 07:21:22,816 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:21:22,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:22,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1156417812, now seen corresponding path program 1 times [2023-09-01 07:21:22,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:22,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690656492] [2023-09-01 07:21:22,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:22,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:22,957 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 07:21:22,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:22,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690656492] [2023-09-01 07:21:22,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690656492] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:22,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:21:22,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 07:21:22,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869897810] [2023-09-01 07:21:22,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:22,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:21:22,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:22,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:21:22,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:21:23,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 642 [2023-09-01 07:21:23,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 51 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 262.0) internal successors, (1310), 5 states have internal predecessors, (1310), 0 states have call successors, (0), 0 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 07:21:23,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:23,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 642 [2023-09-01 07:21:23,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:23,730 INFO L130 PetriNetUnfolder]: 2597/4352 cut-off events. [2023-09-01 07:21:23,730 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2023-09-01 07:21:23,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8901 conditions, 4352 events. 2597/4352 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 27095 event pairs, 1935 based on Foata normal form. 0/1906 useless extension candidates. Maximal degree in co-relation 7265. Up to 3071 conditions per place. [2023-09-01 07:21:23,773 INFO L137 encePairwiseOnDemand]: 634/642 looper letters, 101 selfloop transitions, 10 changer transitions 0/111 dead transitions. [2023-09-01 07:21:23,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 111 transitions, 547 flow [2023-09-01 07:21:23,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:21:23,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:21:23,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1670 transitions. [2023-09-01 07:21:23,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43354101765316716 [2023-09-01 07:21:23,778 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1670 transitions. [2023-09-01 07:21:23,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1670 transitions. [2023-09-01 07:21:23,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:23,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1670 transitions. [2023-09-01 07:21:23,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 278.3333333333333) internal successors, (1670), 6 states have internal predecessors, (1670), 0 states have call successors, (0), 0 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 07:21:23,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 0 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 07:21:23,790 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 0 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 07:21:23,790 INFO L175 Difference]: Start difference. First operand has 51 places, 51 transitions, 198 flow. Second operand 6 states and 1670 transitions. [2023-09-01 07:21:23,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 111 transitions, 547 flow [2023-09-01 07:21:23,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 111 transitions, 534 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 07:21:23,793 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 239 flow [2023-09-01 07:21:23,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=239, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2023-09-01 07:21:23,794 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 10 predicate places. [2023-09-01 07:21:23,794 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 239 flow [2023-09-01 07:21:23,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 262.0) internal successors, (1310), 5 states have internal predecessors, (1310), 0 states have call successors, (0), 0 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 07:21:23,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:23,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 07:21:23,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 07:21:23,796 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:21:23,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:23,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1156417861, now seen corresponding path program 1 times [2023-09-01 07:21:23,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:23,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601885443] [2023-09-01 07:21:23,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:23,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:23,884 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 07:21:23,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:23,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601885443] [2023-09-01 07:21:23,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601885443] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:23,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:21:23,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 07:21:23,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831068746] [2023-09-01 07:21:23,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:23,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:21:23,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:23,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:21:23,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:21:24,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 642 [2023-09-01 07:21:24,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 239 flow. Second operand has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 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 07:21:24,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:24,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 642 [2023-09-01 07:21:24,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:25,099 INFO L130 PetriNetUnfolder]: 4812/8044 cut-off events. [2023-09-01 07:21:25,099 INFO L131 PetriNetUnfolder]: For 2306/2306 co-relation queries the response was YES. [2023-09-01 07:21:25,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17686 conditions, 8044 events. 4812/8044 cut-off events. For 2306/2306 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 54936 event pairs, 3796 based on Foata normal form. 262/4496 useless extension candidates. Maximal degree in co-relation 13587. Up to 3847 conditions per place. [2023-09-01 07:21:25,140 INFO L137 encePairwiseOnDemand]: 635/642 looper letters, 116 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2023-09-01 07:21:25,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 121 transitions, 676 flow [2023-09-01 07:21:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:21:25,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:21:25,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1422 transitions. [2023-09-01 07:21:25,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44299065420560746 [2023-09-01 07:21:25,146 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1422 transitions. [2023-09-01 07:21:25,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1422 transitions. [2023-09-01 07:21:25,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:25,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1422 transitions. [2023-09-01 07:21:25,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 284.4) internal successors, (1422), 5 states have internal predecessors, (1422), 0 states have call successors, (0), 0 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 07:21:25,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 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 07:21:25,157 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 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 07:21:25,157 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 239 flow. Second operand 5 states and 1422 transitions. [2023-09-01 07:21:25,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 121 transitions, 676 flow [2023-09-01 07:21:25,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 121 transitions, 666 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 07:21:25,167 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 276 flow [2023-09-01 07:21:25,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=276, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2023-09-01 07:21:25,169 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 16 predicate places. [2023-09-01 07:21:25,170 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 276 flow [2023-09-01 07:21:25,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 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 07:21:25,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:25,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 07:21:25,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 07:21:25,171 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:21:25,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:25,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1488864973, now seen corresponding path program 1 times [2023-09-01 07:21:25,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:25,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755985822] [2023-09-01 07:21:25,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:25,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:25,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:25,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:25,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755985822] [2023-09-01 07:21:25,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755985822] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:21:25,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163023805] [2023-09-01 07:21:25,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:25,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:25,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:21:25,317 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 07:21:25,325 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 07:21:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:25,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:21:25,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:21:25,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:21:25,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:21:25,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163023805] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:25,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:21:25,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-09-01 07:21:25,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884654607] [2023-09-01 07:21:25,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:25,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:21:25,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:25,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:21:25,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:21:25,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 642 [2023-09-01 07:21:25,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 0 states have call successors, (0), 0 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 07:21:25,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:25,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 642 [2023-09-01 07:21:25,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:26,221 INFO L130 PetriNetUnfolder]: 3821/6399 cut-off events. [2023-09-01 07:21:26,222 INFO L131 PetriNetUnfolder]: For 4576/4576 co-relation queries the response was YES. [2023-09-01 07:21:26,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13982 conditions, 6399 events. 3821/6399 cut-off events. For 4576/4576 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 41860 event pairs, 3157 based on Foata normal form. 352/3611 useless extension candidates. Maximal degree in co-relation 12304. Up to 6399 conditions per place. [2023-09-01 07:21:26,257 INFO L137 encePairwiseOnDemand]: 638/642 looper letters, 50 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-09-01 07:21:26,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 51 transitions, 340 flow [2023-09-01 07:21:26,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:21:26,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:21:26,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 858 transitions. [2023-09-01 07:21:26,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4454828660436137 [2023-09-01 07:21:26,267 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 858 transitions. [2023-09-01 07:21:26,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 858 transitions. [2023-09-01 07:21:26,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:26,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 858 transitions. [2023-09-01 07:21:26,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 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 07:21:26,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 642.0) internal successors, (2568), 4 states have internal predecessors, (2568), 0 states have call successors, (0), 0 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 07:21:26,322 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 642.0) internal successors, (2568), 4 states have internal predecessors, (2568), 0 states have call successors, (0), 0 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 07:21:26,322 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 276 flow. Second operand 3 states and 858 transitions. [2023-09-01 07:21:26,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 51 transitions, 340 flow [2023-09-01 07:21:26,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 318 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-09-01 07:21:26,327 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 218 flow [2023-09-01 07:21:26,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2023-09-01 07:21:26,328 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 8 predicate places. [2023-09-01 07:21:26,328 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 218 flow [2023-09-01 07:21:26,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 0 states have call successors, (0), 0 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 07:21:26,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:26,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 07:21:26,339 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 07:21:26,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:26,537 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:21:26,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:26,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1475816564, now seen corresponding path program 1 times [2023-09-01 07:21:26,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:26,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970723137] [2023-09-01 07:21:26,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:26,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:26,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:26,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970723137] [2023-09-01 07:21:26,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970723137] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:21:26,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115744776] [2023-09-01 07:21:26,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:26,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:26,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:21:26,659 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 07:21:26,661 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 07:21:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:26,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:21:26,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:21:26,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:21:26,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:21:26,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115744776] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:26,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:21:26,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-09-01 07:21:26,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150441462] [2023-09-01 07:21:26,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:26,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:21:26,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:26,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:21:26,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:21:26,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 642 [2023-09-01 07:21:26,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 272.5) internal successors, (1090), 4 states have internal predecessors, (1090), 0 states have call successors, (0), 0 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 07:21:26,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:26,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 642 [2023-09-01 07:21:26,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:27,451 INFO L130 PetriNetUnfolder]: 3476/5824 cut-off events. [2023-09-01 07:21:27,452 INFO L131 PetriNetUnfolder]: For 702/702 co-relation queries the response was YES. [2023-09-01 07:21:27,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11979 conditions, 5824 events. 3476/5824 cut-off events. For 702/702 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 37561 event pairs, 2850 based on Foata normal form. 220/3044 useless extension candidates. Maximal degree in co-relation 11963. Up to 5817 conditions per place. [2023-09-01 07:21:27,472 INFO L137 encePairwiseOnDemand]: 638/642 looper letters, 41 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2023-09-01 07:21:27,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 286 flow [2023-09-01 07:21:27,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:21:27,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:21:27,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1120 transitions. [2023-09-01 07:21:27,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43613707165109034 [2023-09-01 07:21:27,477 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1120 transitions. [2023-09-01 07:21:27,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1120 transitions. [2023-09-01 07:21:27,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:27,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1120 transitions. [2023-09-01 07:21:27,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 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 07:21:27,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 642.0) internal successors, (3210), 5 states have internal predecessors, (3210), 0 states have call successors, (0), 0 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 07:21:27,484 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 642.0) internal successors, (3210), 5 states have internal predecessors, (3210), 0 states have call successors, (0), 0 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 07:21:27,484 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 218 flow. Second operand 4 states and 1120 transitions. [2023-09-01 07:21:27,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 286 flow [2023-09-01 07:21:27,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 280 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 07:21:27,486 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 198 flow [2023-09-01 07:21:27,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-09-01 07:21:27,487 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 4 predicate places. [2023-09-01 07:21:27,487 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 198 flow [2023-09-01 07:21:27,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 272.5) internal successors, (1090), 4 states have internal predecessors, (1090), 0 states have call successors, (0), 0 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 07:21:27,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:27,488 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 07:21:27,498 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 07:21:27,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:27,693 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:21:27,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:27,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1475369854, now seen corresponding path program 2 times [2023-09-01 07:21:27,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:27,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062026580] [2023-09-01 07:21:27,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:27,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:27,767 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:27,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:27,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062026580] [2023-09-01 07:21:27,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062026580] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:21:27,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001420437] [2023-09-01 07:21:27,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:21:27,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:27,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:21:27,773 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 07:21:27,812 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 07:21:27,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:21:27,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:21:27,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 07:21:27,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:21:27,911 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:21:27,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:21:27,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001420437] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:27,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:21:27,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 07:21:27,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999447319] [2023-09-01 07:21:27,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:27,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:21:27,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:27,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:21:27,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:21:27,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 642 [2023-09-01 07:21:27,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 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 07:21:27,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:27,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 642 [2023-09-01 07:21:27,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:28,427 INFO L130 PetriNetUnfolder]: 3476/5823 cut-off events. [2023-09-01 07:21:28,427 INFO L131 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2023-09-01 07:21:28,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11974 conditions, 5823 events. 3476/5823 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 37820 event pairs, 2850 based on Foata normal form. 1/2824 useless extension candidates. Maximal degree in co-relation 11960. Up to 5818 conditions per place. [2023-09-01 07:21:28,451 INFO L137 encePairwiseOnDemand]: 639/642 looper letters, 40 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2023-09-01 07:21:28,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 280 flow [2023-09-01 07:21:28,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:21:28,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:21:28,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 853 transitions. [2023-09-01 07:21:28,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4428868120456905 [2023-09-01 07:21:28,455 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 853 transitions. [2023-09-01 07:21:28,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 853 transitions. [2023-09-01 07:21:28,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:28,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 853 transitions. [2023-09-01 07:21:28,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 284.3333333333333) internal successors, (853), 3 states have internal predecessors, (853), 0 states have call successors, (0), 0 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 07:21:28,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 642.0) internal successors, (2568), 4 states have internal predecessors, (2568), 0 states have call successors, (0), 0 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 07:21:28,461 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 642.0) internal successors, (2568), 4 states have internal predecessors, (2568), 0 states have call successors, (0), 0 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 07:21:28,461 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 198 flow. Second operand 3 states and 853 transitions. [2023-09-01 07:21:28,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 280 flow [2023-09-01 07:21:28,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 273 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:21:28,463 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 193 flow [2023-09-01 07:21:28,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-09-01 07:21:28,464 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 3 predicate places. [2023-09-01 07:21:28,464 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 193 flow [2023-09-01 07:21:28,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 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 07:21:28,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:28,465 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 07:21:28,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-09-01 07:21:28,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:28,670 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:21:28,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:28,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1090186590, now seen corresponding path program 1 times [2023-09-01 07:21:28,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:28,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688987193] [2023-09-01 07:21:28,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:28,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:28,760 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:28,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:28,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688987193] [2023-09-01 07:21:28,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688987193] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:21:28,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128939418] [2023-09-01 07:21:28,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:28,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:28,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:21:28,765 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 07:21:28,767 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 07:21:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:28,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 07:21:28,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:21:28,869 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:28,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:21:28,929 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:28,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128939418] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:21:28,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:21:28,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-09-01 07:21:28,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659697413] [2023-09-01 07:21:28,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:21:28,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 07:21:28,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:28,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 07:21:28,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 07:21:29,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 642 [2023-09-01 07:21:29,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 193 flow. Second operand has 13 states, 13 states have (on average 272.15384615384613) internal successors, (3538), 13 states have internal predecessors, (3538), 0 states have call successors, (0), 0 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 07:21:29,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:29,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 642 [2023-09-01 07:21:29,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:30,367 INFO L130 PetriNetUnfolder]: 7646/12807 cut-off events. [2023-09-01 07:21:30,367 INFO L131 PetriNetUnfolder]: For 235/235 co-relation queries the response was YES. [2023-09-01 07:21:30,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26313 conditions, 12807 events. 7646/12807 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 88511 event pairs, 6270 based on Foata normal form. 12/6219 useless extension candidates. Maximal degree in co-relation 26299. Up to 2112 conditions per place. [2023-09-01 07:21:30,411 INFO L137 encePairwiseOnDemand]: 637/642 looper letters, 312 selfloop transitions, 31 changer transitions 0/343 dead transitions. [2023-09-01 07:21:30,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 343 transitions, 1627 flow [2023-09-01 07:21:30,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 07:21:30,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 07:21:30,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3601 transitions. [2023-09-01 07:21:30,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4674195223260644 [2023-09-01 07:21:30,420 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3601 transitions. [2023-09-01 07:21:30,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3601 transitions. [2023-09-01 07:21:30,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:30,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3601 transitions. [2023-09-01 07:21:30,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 300.0833333333333) internal successors, (3601), 12 states have internal predecessors, (3601), 0 states have call successors, (0), 0 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 07:21:30,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 642.0) internal successors, (8346), 13 states have internal predecessors, (8346), 0 states have call successors, (0), 0 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 07:21:30,439 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 642.0) internal successors, (8346), 13 states have internal predecessors, (8346), 0 states have call successors, (0), 0 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 07:21:30,439 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 193 flow. Second operand 12 states and 3601 transitions. [2023-09-01 07:21:30,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 343 transitions, 1627 flow [2023-09-01 07:21:30,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 343 transitions, 1603 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:21:30,445 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 409 flow [2023-09-01 07:21:30,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=48, 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=12, PETRI_FLOW=409, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2023-09-01 07:21:30,445 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 18 predicate places. [2023-09-01 07:21:30,446 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 409 flow [2023-09-01 07:21:30,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 272.15384615384613) internal successors, (3538), 13 states have internal predecessors, (3538), 0 states have call successors, (0), 0 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 07:21:30,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:30,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:21:30,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-09-01 07:21:30,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:30,653 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:21:30,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:30,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1078872344, now seen corresponding path program 1 times [2023-09-01 07:21:30,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:30,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034991007] [2023-09-01 07:21:30,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:30,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:30,685 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 07:21:30,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:30,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034991007] [2023-09-01 07:21:30,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034991007] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:30,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:21:30,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:21:30,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827069577] [2023-09-01 07:21:30,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:30,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:21:30,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:30,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:21:30,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:21:30,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 642 [2023-09-01 07:21:30,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 409 flow. Second operand has 3 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 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 07:21:30,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:30,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 642 [2023-09-01 07:21:30,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:32,842 INFO L130 PetriNetUnfolder]: 13542/22619 cut-off events. [2023-09-01 07:21:32,842 INFO L131 PetriNetUnfolder]: For 209/209 co-relation queries the response was YES. [2023-09-01 07:21:32,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46407 conditions, 22619 events. 13542/22619 cut-off events. For 209/209 co-relation queries the response was YES. Maximal size of possible extension queue 881. Compared 174489 event pairs, 6270 based on Foata normal form. 0/11003 useless extension candidates. Maximal degree in co-relation 46387. Up to 12808 conditions per place. [2023-09-01 07:21:32,928 INFO L137 encePairwiseOnDemand]: 638/642 looper letters, 85 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2023-09-01 07:21:32,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 87 transitions, 632 flow [2023-09-01 07:21:32,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:21:32,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:21:32,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 883 transitions. [2023-09-01 07:21:32,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45846313603322947 [2023-09-01 07:21:32,931 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 883 transitions. [2023-09-01 07:21:32,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 883 transitions. [2023-09-01 07:21:32,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:32,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 883 transitions. [2023-09-01 07:21:32,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 294.3333333333333) internal successors, (883), 3 states have internal predecessors, (883), 0 states have call successors, (0), 0 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 07:21:32,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 642.0) internal successors, (2568), 4 states have internal predecessors, (2568), 0 states have call successors, (0), 0 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 07:21:32,936 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 642.0) internal successors, (2568), 4 states have internal predecessors, (2568), 0 states have call successors, (0), 0 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 07:21:32,936 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 409 flow. Second operand 3 states and 883 transitions. [2023-09-01 07:21:32,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 87 transitions, 632 flow [2023-09-01 07:21:32,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 87 transitions, 542 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-09-01 07:21:32,940 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 333 flow [2023-09-01 07:21:32,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=333, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2023-09-01 07:21:32,941 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 16 predicate places. [2023-09-01 07:21:32,941 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 333 flow [2023-09-01 07:21:32,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 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 07:21:32,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:32,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:21:32,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 07:21:32,942 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:21:32,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:32,942 INFO L85 PathProgramCache]: Analyzing trace with hash 915195603, now seen corresponding path program 1 times [2023-09-01 07:21:32,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:32,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259369776] [2023-09-01 07:21:32,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:32,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:33,028 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 07:21:33,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:33,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259369776] [2023-09-01 07:21:33,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259369776] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:33,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:21:33,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 07:21:33,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701516237] [2023-09-01 07:21:33,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:33,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:21:33,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:33,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:21:33,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:21:33,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 642 [2023-09-01 07:21:33,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 333 flow. Second operand has 5 states, 5 states have (on average 265.6) internal successors, (1328), 5 states have internal predecessors, (1328), 0 states have call successors, (0), 0 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 07:21:33,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:33,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 642 [2023-09-01 07:21:33,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:34,463 INFO L130 PetriNetUnfolder]: 9131/15678 cut-off events. [2023-09-01 07:21:34,463 INFO L131 PetriNetUnfolder]: For 1575/1575 co-relation queries the response was YES. [2023-09-01 07:21:34,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34180 conditions, 15678 events. 9131/15678 cut-off events. For 1575/1575 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 117174 event pairs, 6325 based on Foata normal form. 0/9210 useless extension candidates. Maximal degree in co-relation 34160. Up to 11320 conditions per place. [2023-09-01 07:21:34,538 INFO L137 encePairwiseOnDemand]: 632/642 looper letters, 106 selfloop transitions, 4 changer transitions 8/118 dead transitions. [2023-09-01 07:21:34,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 118 transitions, 772 flow [2023-09-01 07:21:34,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:21:34,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:21:34,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1401 transitions. [2023-09-01 07:21:34,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43644859813084114 [2023-09-01 07:21:34,542 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1401 transitions. [2023-09-01 07:21:34,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1401 transitions. [2023-09-01 07:21:34,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:34,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1401 transitions. [2023-09-01 07:21:34,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 280.2) internal successors, (1401), 5 states have internal predecessors, (1401), 0 states have call successors, (0), 0 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 07:21:34,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 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 07:21:34,549 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 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 07:21:34,549 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 333 flow. Second operand 5 states and 1401 transitions. [2023-09-01 07:21:34,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 118 transitions, 772 flow [2023-09-01 07:21:34,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 118 transitions, 766 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:21:34,556 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 358 flow [2023-09-01 07:21:34,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=358, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2023-09-01 07:21:34,557 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 21 predicate places. [2023-09-01 07:21:34,557 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 358 flow [2023-09-01 07:21:34,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 265.6) internal successors, (1328), 5 states have internal predecessors, (1328), 0 states have call successors, (0), 0 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 07:21:34,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:34,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:21:34,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 07:21:34,558 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:21:34,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:34,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1525571260, now seen corresponding path program 1 times [2023-09-01 07:21:34,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:34,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411589369] [2023-09-01 07:21:34,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:34,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:34,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:21:34,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:34,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411589369] [2023-09-01 07:21:34,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411589369] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:34,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:21:34,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 07:21:34,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851255025] [2023-09-01 07:21:34,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:34,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:21:34,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:34,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:21:34,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:21:34,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 642 [2023-09-01 07:21:34,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 358 flow. Second operand has 5 states, 5 states have (on average 265.8) internal successors, (1329), 5 states have internal predecessors, (1329), 0 states have call successors, (0), 0 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 07:21:34,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:34,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 642 [2023-09-01 07:21:34,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:36,185 INFO L130 PetriNetUnfolder]: 8730/15047 cut-off events. [2023-09-01 07:21:36,185 INFO L131 PetriNetUnfolder]: For 3098/3098 co-relation queries the response was YES. [2023-09-01 07:21:36,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36865 conditions, 15047 events. 8730/15047 cut-off events. For 3098/3098 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 111219 event pairs, 7170 based on Foata normal form. 46/9481 useless extension candidates. Maximal degree in co-relation 36842. Up to 14247 conditions per place. [2023-09-01 07:21:36,289 INFO L137 encePairwiseOnDemand]: 632/642 looper letters, 83 selfloop transitions, 15 changer transitions 8/106 dead transitions. [2023-09-01 07:21:36,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 106 transitions, 681 flow [2023-09-01 07:21:36,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:21:36,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:21:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1398 transitions. [2023-09-01 07:21:36,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4355140186915888 [2023-09-01 07:21:36,293 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1398 transitions. [2023-09-01 07:21:36,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1398 transitions. [2023-09-01 07:21:36,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:36,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1398 transitions. [2023-09-01 07:21:36,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 279.6) internal successors, (1398), 5 states have internal predecessors, (1398), 0 states have call successors, (0), 0 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 07:21:36,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 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 07:21:36,301 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 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 07:21:36,301 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 358 flow. Second operand 5 states and 1398 transitions. [2023-09-01 07:21:36,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 106 transitions, 681 flow [2023-09-01 07:21:36,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 106 transitions, 676 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:21:36,370 INFO L231 Difference]: Finished difference. Result has 72 places, 68 transitions, 414 flow [2023-09-01 07:21:36,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=414, PETRI_PLACES=72, PETRI_TRANSITIONS=68} [2023-09-01 07:21:36,371 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 25 predicate places. [2023-09-01 07:21:36,371 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 68 transitions, 414 flow [2023-09-01 07:21:36,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 265.8) internal successors, (1329), 5 states have internal predecessors, (1329), 0 states have call successors, (0), 0 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 07:21:36,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:36,372 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:21:36,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 07:21:36,372 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:21:36,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:36,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1709105583, now seen corresponding path program 1 times [2023-09-01 07:21:36,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:36,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501394491] [2023-09-01 07:21:36,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:36,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:36,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:21:36,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:36,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501394491] [2023-09-01 07:21:36,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501394491] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:36,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:21:36,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 07:21:36,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38344390] [2023-09-01 07:21:36,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:36,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:21:36,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:36,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:21:36,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:21:36,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 642 [2023-09-01 07:21:36,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 68 transitions, 414 flow. Second operand has 5 states, 5 states have (on average 265.8) internal successors, (1329), 5 states have internal predecessors, (1329), 0 states have call successors, (0), 0 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 07:21:36,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:36,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 642 [2023-09-01 07:21:36,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:37,888 INFO L130 PetriNetUnfolder]: 6640/11307 cut-off events. [2023-09-01 07:21:37,889 INFO L131 PetriNetUnfolder]: For 3881/3881 co-relation queries the response was YES. [2023-09-01 07:21:37,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31224 conditions, 11307 events. 6640/11307 cut-off events. For 3881/3881 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 78383 event pairs, 5362 based on Foata normal form. 0/6751 useless extension candidates. Maximal degree in co-relation 31200. Up to 10689 conditions per place. [2023-09-01 07:21:37,972 INFO L137 encePairwiseOnDemand]: 637/642 looper letters, 75 selfloop transitions, 3 changer transitions 19/97 dead transitions. [2023-09-01 07:21:37,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 97 transitions, 761 flow [2023-09-01 07:21:37,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:21:37,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:21:37,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1374 transitions. [2023-09-01 07:21:37,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280373831775701 [2023-09-01 07:21:37,975 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1374 transitions. [2023-09-01 07:21:37,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1374 transitions. [2023-09-01 07:21:37,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:37,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1374 transitions. [2023-09-01 07:21:37,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 274.8) internal successors, (1374), 5 states have internal predecessors, (1374), 0 states have call successors, (0), 0 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 07:21:37,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 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 07:21:37,982 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 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 07:21:37,983 INFO L175 Difference]: Start difference. First operand has 72 places, 68 transitions, 414 flow. Second operand 5 states and 1374 transitions. [2023-09-01 07:21:37,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 97 transitions, 761 flow [2023-09-01 07:21:38,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 97 transitions, 733 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:21:38,085 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 382 flow [2023-09-01 07:21:38,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=382, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2023-09-01 07:21:38,086 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 29 predicate places. [2023-09-01 07:21:38,086 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 382 flow [2023-09-01 07:21:38,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 265.8) internal successors, (1329), 5 states have internal predecessors, (1329), 0 states have call successors, (0), 0 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 07:21:38,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:38,087 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:21:38,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 07:21:38,088 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:21:38,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:38,088 INFO L85 PathProgramCache]: Analyzing trace with hash -63467008, now seen corresponding path program 1 times [2023-09-01 07:21:38,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:38,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042079209] [2023-09-01 07:21:38,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:38,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:38,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:21:38,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:38,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042079209] [2023-09-01 07:21:38,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042079209] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:38,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:21:38,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 07:21:38,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537628694] [2023-09-01 07:21:38,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:38,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:21:38,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:38,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:21:38,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:21:38,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 642 [2023-09-01 07:21:38,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 382 flow. Second operand has 5 states, 5 states have (on average 266.0) internal successors, (1330), 5 states have internal predecessors, (1330), 0 states have call successors, (0), 0 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 07:21:38,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:38,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 642 [2023-09-01 07:21:38,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:39,243 INFO L130 PetriNetUnfolder]: 6186/10417 cut-off events. [2023-09-01 07:21:39,244 INFO L131 PetriNetUnfolder]: For 3931/3931 co-relation queries the response was YES. [2023-09-01 07:21:39,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29398 conditions, 10417 events. 6186/10417 cut-off events. For 3931/3931 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 70927 event pairs, 5152 based on Foata normal form. 8/6325 useless extension candidates. Maximal degree in co-relation 29371. Up to 10347 conditions per place. [2023-09-01 07:21:39,287 INFO L137 encePairwiseOnDemand]: 637/642 looper letters, 52 selfloop transitions, 12 changer transitions 16/80 dead transitions. [2023-09-01 07:21:39,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 80 transitions, 586 flow [2023-09-01 07:21:39,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:21:39,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:21:39,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1371 transitions. [2023-09-01 07:21:39,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42710280373831777 [2023-09-01 07:21:39,290 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1371 transitions. [2023-09-01 07:21:39,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1371 transitions. [2023-09-01 07:21:39,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:39,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1371 transitions. [2023-09-01 07:21:39,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 274.2) internal successors, (1371), 5 states have internal predecessors, (1371), 0 states have call successors, (0), 0 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 07:21:39,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 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 07:21:39,296 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 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 07:21:39,297 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 382 flow. Second operand 5 states and 1371 transitions. [2023-09-01 07:21:39,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 80 transitions, 586 flow [2023-09-01 07:21:39,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 80 transitions, 567 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-09-01 07:21:39,332 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 376 flow [2023-09-01 07:21:39,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=376, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2023-09-01 07:21:39,332 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 29 predicate places. [2023-09-01 07:21:39,333 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 376 flow [2023-09-01 07:21:39,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 266.0) internal successors, (1330), 5 states have internal predecessors, (1330), 0 states have call successors, (0), 0 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 07:21:39,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:39,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:21:39,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 07:21:39,334 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:21:39,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:39,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1995344343, now seen corresponding path program 1 times [2023-09-01 07:21:39,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:39,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510840666] [2023-09-01 07:21:39,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:39,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:39,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:39,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:39,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:39,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510840666] [2023-09-01 07:21:39,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510840666] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:21:39,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215173618] [2023-09-01 07:21:39,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:39,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:39,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:21:39,677 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 07:21:39,686 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 07:21:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:39,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 07:21:39,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:21:39,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:21:39,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:21:39,891 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 07:21:39,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-09-01 07:21:39,936 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 07:21:39,971 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 07:21:39,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 07:21:40,002 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 07:21:40,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:21:40,034 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 07:21:40,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:21:40,062 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 07:21:40,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:40,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:21:40,256 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:21:40,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2023-09-01 07:21:40,270 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:21:40,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 489 treesize of output 473 [2023-09-01 07:21:40,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 51 [2023-09-01 07:21:40,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 98 [2023-09-01 07:21:40,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2023-09-01 07:21:40,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:40,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215173618] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:21:40,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:21:40,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-09-01 07:21:40,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591228120] [2023-09-01 07:21:40,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:21:40,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-09-01 07:21:40,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:40,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-09-01 07:21:40,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=362, Unknown=10, NotChecked=0, Total=462 [2023-09-01 07:21:40,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 642 [2023-09-01 07:21:40,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 376 flow. Second operand has 22 states, 22 states have (on average 227.3181818181818) internal successors, (5001), 22 states have internal predecessors, (5001), 0 states have call successors, (0), 0 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 07:21:40,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:40,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 642 [2023-09-01 07:21:40,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:42,464 INFO L130 PetriNetUnfolder]: 9712/16207 cut-off events. [2023-09-01 07:21:42,464 INFO L131 PetriNetUnfolder]: For 4635/4635 co-relation queries the response was YES. [2023-09-01 07:21:42,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41093 conditions, 16207 events. 9712/16207 cut-off events. For 4635/4635 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 120026 event pairs, 3200 based on Foata normal form. 0/9727 useless extension candidates. Maximal degree in co-relation 41067. Up to 6772 conditions per place. [2023-09-01 07:21:42,535 INFO L137 encePairwiseOnDemand]: 632/642 looper letters, 97 selfloop transitions, 18 changer transitions 5/120 dead transitions. [2023-09-01 07:21:42,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 120 transitions, 840 flow [2023-09-01 07:21:42,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:21:42,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:21:42,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1663 transitions. [2023-09-01 07:21:42,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37004895416110367 [2023-09-01 07:21:42,539 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1663 transitions. [2023-09-01 07:21:42,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1663 transitions. [2023-09-01 07:21:42,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:42,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1663 transitions. [2023-09-01 07:21:42,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 237.57142857142858) internal successors, (1663), 7 states have internal predecessors, (1663), 0 states have call successors, (0), 0 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 07:21:42,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 642.0) internal successors, (5136), 8 states have internal predecessors, (5136), 0 states have call successors, (0), 0 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 07:21:42,545 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 642.0) internal successors, (5136), 8 states have internal predecessors, (5136), 0 states have call successors, (0), 0 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 07:21:42,546 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 376 flow. Second operand 7 states and 1663 transitions. [2023-09-01 07:21:42,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 120 transitions, 840 flow [2023-09-01 07:21:42,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 120 transitions, 780 flow, removed 17 selfloop flow, removed 6 redundant places. [2023-09-01 07:21:42,668 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 407 flow [2023-09-01 07:21:42,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=407, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2023-09-01 07:21:42,669 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 26 predicate places. [2023-09-01 07:21:42,669 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 407 flow [2023-09-01 07:21:42,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 227.3181818181818) internal successors, (5001), 22 states have internal predecessors, (5001), 0 states have call successors, (0), 0 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 07:21:42,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:42,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:21:42,677 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 07:21:42,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:42,877 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:21:42,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:42,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1995344322, now seen corresponding path program 1 times [2023-09-01 07:21:42,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:42,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621187963] [2023-09-01 07:21:42,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:42,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:43,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:21:43,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:43,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621187963] [2023-09-01 07:21:43,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621187963] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:21:43,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998947432] [2023-09-01 07:21:43,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:43,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:43,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:21:43,211 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 07:21:43,214 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 07:21:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:43,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 38 conjunts are in the unsatisfiable core [2023-09-01 07:21:43,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:21:43,332 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-09-01 07:21:43,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 12 treesize of output 16 [2023-09-01 07:21:43,375 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2023-09-01 07:21:43,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 25 [2023-09-01 07:21:43,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 07:21:43,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:21:43,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:21:43,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:21:43,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:21:43,477 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_398 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_398) c_~a2~0.base) c_~a2~0.offset)))) is different from false [2023-09-01 07:21:43,517 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:21:43,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-09-01 07:21:43,525 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:21:43,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 69 [2023-09-01 07:21:43,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2023-09-01 07:21:43,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-09-01 07:21:43,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:21:43,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998947432] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:21:43,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:21:43,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-09-01 07:21:43,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633296242] [2023-09-01 07:21:43,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:21:43,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 07:21:43,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:43,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 07:21:43,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=4, NotChecked=24, Total=210 [2023-09-01 07:21:43,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 642 [2023-09-01 07:21:43,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 407 flow. Second operand has 15 states, 15 states have (on average 226.53333333333333) internal successors, (3398), 15 states have internal predecessors, (3398), 0 states have call successors, (0), 0 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 07:21:43,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:43,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 642 [2023-09-01 07:21:43,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:45,416 INFO L130 PetriNetUnfolder]: 9002/15037 cut-off events. [2023-09-01 07:21:45,417 INFO L131 PetriNetUnfolder]: For 5057/5057 co-relation queries the response was YES. [2023-09-01 07:21:45,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39631 conditions, 15037 events. 9002/15037 cut-off events. For 5057/5057 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 110585 event pairs, 4300 based on Foata normal form. 0/9617 useless extension candidates. Maximal degree in co-relation 39606. Up to 9100 conditions per place. [2023-09-01 07:21:45,488 INFO L137 encePairwiseOnDemand]: 631/642 looper letters, 85 selfloop transitions, 19 changer transitions 0/104 dead transitions. [2023-09-01 07:21:45,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 104 transitions, 715 flow [2023-09-01 07:21:45,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 07:21:45,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 07:21:45,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1875 transitions. [2023-09-01 07:21:45,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36507009345794394 [2023-09-01 07:21:45,492 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1875 transitions. [2023-09-01 07:21:45,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1875 transitions. [2023-09-01 07:21:45,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:45,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1875 transitions. [2023-09-01 07:21:45,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 234.375) internal successors, (1875), 8 states have internal predecessors, (1875), 0 states have call successors, (0), 0 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 07:21:45,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 642.0) internal successors, (5778), 9 states have internal predecessors, (5778), 0 states have call successors, (0), 0 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 07:21:45,503 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 642.0) internal successors, (5778), 9 states have internal predecessors, (5778), 0 states have call successors, (0), 0 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 07:21:45,503 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 407 flow. Second operand 8 states and 1875 transitions. [2023-09-01 07:21:45,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 104 transitions, 715 flow [2023-09-01 07:21:45,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 104 transitions, 707 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-09-01 07:21:45,509 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 448 flow [2023-09-01 07:21:45,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=448, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2023-09-01 07:21:45,510 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 31 predicate places. [2023-09-01 07:21:45,510 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 448 flow [2023-09-01 07:21:45,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 226.53333333333333) internal successors, (3398), 15 states have internal predecessors, (3398), 0 states have call successors, (0), 0 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 07:21:45,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:45,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:21:45,516 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 07:21:45,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-09-01 07:21:45,712 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:21:45,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:45,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1995344323, now seen corresponding path program 1 times [2023-09-01 07:21:45,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:45,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845585262] [2023-09-01 07:21:45,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:45,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:46,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:21:46,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:46,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845585262] [2023-09-01 07:21:46,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845585262] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:21:46,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728032426] [2023-09-01 07:21:46,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:46,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:46,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:21:46,100 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 07:21:46,102 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 07:21:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:46,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 26 conjunts are in the unsatisfiable core [2023-09-01 07:21:46,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:21:46,246 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 07:21:46,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:21:46,277 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 07:21:46,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:21:46,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 07:21:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:21:46,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:21:46,704 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_439 (Array Int Int)) (v_ArrVal_440 (Array Int Int)) (~a1~0.base Int) (~a1~0.offset Int)) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_439) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_440))) (let ((.cse1 (select (select .cse0 ~a1~0.base) ~a1~0.offset))) (or (<= (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (+ 2147483647 .cse1)) (< 9223372039002259455 .cse1) (<= .cse1 0))))) (forall ((v_ArrVal_439 (Array Int Int)) (v_ArrVal_440 (Array Int Int)) (~a1~0.base Int) (~a1~0.offset Int)) (let ((.cse2 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_439) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_440))) (let ((.cse3 (select (select .cse2 ~a1~0.base) ~a1~0.offset))) (or (<= (select (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (+ 2147483647 .cse3)) (< .cse3 0) (< 0 .cse3)))))) is different from false [2023-09-01 07:21:46,728 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:21:46,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 201 treesize of output 118 [2023-09-01 07:21:46,776 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:21:46,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1281 treesize of output 1224 [2023-09-01 07:21:46,858 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:21:46,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 745 treesize of output 714 [2023-09-01 07:21:46,892 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:21:46,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 705 treesize of output 694 [2023-09-01 07:21:46,927 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:21:46,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 685 treesize of output 654 [2023-09-01 07:21:46,967 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:21:46,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 645 treesize of output 634 [2023-09-01 07:21:57,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-09-01 07:21:57,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728032426] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:21:57,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:21:57,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-09-01 07:21:57,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374053786] [2023-09-01 07:21:57,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:21:57,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 07:21:57,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:57,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 07:21:57,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=188, Unknown=9, NotChecked=28, Total=272 [2023-09-01 07:21:57,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 642 [2023-09-01 07:21:57,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 448 flow. Second operand has 17 states, 17 states have (on average 229.47058823529412) internal successors, (3901), 17 states have internal predecessors, (3901), 0 states have call successors, (0), 0 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 07:21:57,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:57,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 642 [2023-09-01 07:21:57,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:58,996 INFO L130 PetriNetUnfolder]: 8292/13867 cut-off events. [2023-09-01 07:21:58,997 INFO L131 PetriNetUnfolder]: For 7036/7036 co-relation queries the response was YES. [2023-09-01 07:21:59,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38153 conditions, 13867 events. 8292/13867 cut-off events. For 7036/7036 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 100182 event pairs, 4300 based on Foata normal form. 0/9607 useless extension candidates. Maximal degree in co-relation 38128. Up to 9140 conditions per place. [2023-09-01 07:21:59,077 INFO L137 encePairwiseOnDemand]: 633/642 looper letters, 86 selfloop transitions, 17 changer transitions 0/103 dead transitions. [2023-09-01 07:21:59,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 103 transitions, 750 flow [2023-09-01 07:21:59,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:21:59,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:21:59,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1668 transitions. [2023-09-01 07:21:59,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3711615487316422 [2023-09-01 07:21:59,080 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1668 transitions. [2023-09-01 07:21:59,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1668 transitions. [2023-09-01 07:21:59,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:59,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1668 transitions. [2023-09-01 07:21:59,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 238.28571428571428) internal successors, (1668), 7 states have internal predecessors, (1668), 0 states have call successors, (0), 0 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 07:21:59,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 642.0) internal successors, (5136), 8 states have internal predecessors, (5136), 0 states have call successors, (0), 0 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 07:21:59,087 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 642.0) internal successors, (5136), 8 states have internal predecessors, (5136), 0 states have call successors, (0), 0 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 07:21:59,087 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 448 flow. Second operand 7 states and 1668 transitions. [2023-09-01 07:21:59,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 103 transitions, 750 flow [2023-09-01 07:21:59,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 103 transitions, 720 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-09-01 07:21:59,097 INFO L231 Difference]: Finished difference. Result has 80 places, 68 transitions, 448 flow [2023-09-01 07:21:59,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=448, PETRI_PLACES=80, PETRI_TRANSITIONS=68} [2023-09-01 07:21:59,098 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 33 predicate places. [2023-09-01 07:21:59,098 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 68 transitions, 448 flow [2023-09-01 07:21:59,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 229.47058823529412) internal successors, (3901), 17 states have internal predecessors, (3901), 0 states have call successors, (0), 0 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 07:21:59,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:59,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:21:59,106 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 07:21:59,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-09-01 07:21:59,305 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:21:59,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:59,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1995344319, now seen corresponding path program 1 times [2023-09-01 07:21:59,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:59,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455836500] [2023-09-01 07:21:59,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:59,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:59,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:59,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:59,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455836500] [2023-09-01 07:21:59,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455836500] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:21:59,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791856205] [2023-09-01 07:21:59,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:59,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:59,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:21:59,617 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 07:21:59,622 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 07:21:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:59,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 07:21:59,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:21:59,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:21:59,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:21:59,750 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 07:21:59,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-09-01 07:21:59,786 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 07:21:59,822 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 07:21:59,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 07:21:59,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:21:59,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:21:59,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:21:59,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:21:59,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:21:59,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:59,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:21:59,957 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_486 (Array Int Int))) (< 0 (+ 4294967296 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_486) c_~a1~0.base) c_~a1~0.offset)))) is different from false [2023-09-01 07:22:00,046 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:22:00,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-09-01 07:22:00,059 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:22:00,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 279 treesize of output 271 [2023-09-01 07:22:00,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 120 [2023-09-01 07:22:00,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 58 [2023-09-01 07:22:00,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2023-09-01 07:22:00,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:22:00,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791856205] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:22:00,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:22:00,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-09-01 07:22:00,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947835554] [2023-09-01 07:22:00,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:22:00,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-09-01 07:22:00,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:22:00,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-09-01 07:22:00,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=298, Unknown=6, NotChecked=36, Total=420 [2023-09-01 07:22:00,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 642 [2023-09-01 07:22:00,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 68 transitions, 448 flow. Second operand has 21 states, 21 states have (on average 227.28571428571428) internal successors, (4773), 21 states have internal predecessors, (4773), 0 states have call successors, (0), 0 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 07:22:00,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:22:00,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 642 [2023-09-01 07:22:00,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:22:01,660 INFO L130 PetriNetUnfolder]: 7582/12697 cut-off events. [2023-09-01 07:22:01,660 INFO L131 PetriNetUnfolder]: For 9833/9833 co-relation queries the response was YES. [2023-09-01 07:22:01,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36133 conditions, 12697 events. 7582/12697 cut-off events. For 9833/9833 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 91282 event pairs, 3000 based on Foata normal form. 460/9597 useless extension candidates. Maximal degree in co-relation 36109. Up to 6772 conditions per place. [2023-09-01 07:22:01,730 INFO L137 encePairwiseOnDemand]: 633/642 looper letters, 96 selfloop transitions, 18 changer transitions 5/119 dead transitions. [2023-09-01 07:22:01,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 119 transitions, 892 flow [2023-09-01 07:22:01,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:22:01,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:22:01,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1659 transitions. [2023-09-01 07:22:01,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3691588785046729 [2023-09-01 07:22:01,734 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1659 transitions. [2023-09-01 07:22:01,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1659 transitions. [2023-09-01 07:22:01,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:22:01,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1659 transitions. [2023-09-01 07:22:01,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 237.0) internal successors, (1659), 7 states have internal predecessors, (1659), 0 states have call successors, (0), 0 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 07:22:01,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 642.0) internal successors, (5136), 8 states have internal predecessors, (5136), 0 states have call successors, (0), 0 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 07:22:01,739 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 642.0) internal successors, (5136), 8 states have internal predecessors, (5136), 0 states have call successors, (0), 0 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 07:22:01,739 INFO L175 Difference]: Start difference. First operand has 80 places, 68 transitions, 448 flow. Second operand 7 states and 1659 transitions. [2023-09-01 07:22:01,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 119 transitions, 892 flow [2023-09-01 07:22:01,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 119 transitions, 845 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 07:22:01,748 INFO L231 Difference]: Finished difference. Result has 81 places, 67 transitions, 436 flow [2023-09-01 07:22:01,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=436, PETRI_PLACES=81, PETRI_TRANSITIONS=67} [2023-09-01 07:22:01,748 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 34 predicate places. [2023-09-01 07:22:01,748 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 67 transitions, 436 flow [2023-09-01 07:22:01,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 227.28571428571428) internal successors, (4773), 21 states have internal predecessors, (4773), 0 states have call successors, (0), 0 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 07:22:01,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:22:01,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:22:01,754 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 07:22:01,949 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,SelfDestructingSolverStorable17 [2023-09-01 07:22:01,950 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:22:01,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:22:01,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1726131577, now seen corresponding path program 1 times [2023-09-01 07:22:01,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:22:01,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967730574] [2023-09-01 07:22:01,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:01,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:22:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:02,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:22:02,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:22:02,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967730574] [2023-09-01 07:22:02,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967730574] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:22:02,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924565015] [2023-09-01 07:22:02,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:02,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:22:02,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:22:02,154 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 07:22:02,156 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 07:22:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:02,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 07:22:02,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:22:02,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:22:02,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:22:02,321 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 23 treesize of output 7 [2023-09-01 07:22:02,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:22:02,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924565015] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:22:02,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:22:02,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2023-09-01 07:22:02,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922367692] [2023-09-01 07:22:02,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:22:02,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 07:22:02,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:22:02,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 07:22:02,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-09-01 07:22:03,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 642 [2023-09-01 07:22:03,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 67 transitions, 436 flow. Second operand has 16 states, 16 states have (on average 255.75) internal successors, (4092), 16 states have internal predecessors, (4092), 0 states have call successors, (0), 0 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 07:22:03,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:22:03,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 642 [2023-09-01 07:22:03,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:22:05,178 INFO L130 PetriNetUnfolder]: 10741/18368 cut-off events. [2023-09-01 07:22:05,178 INFO L131 PetriNetUnfolder]: For 22221/22221 co-relation queries the response was YES. [2023-09-01 07:22:05,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51670 conditions, 18368 events. 10741/18368 cut-off events. For 22221/22221 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 141241 event pairs, 6065 based on Foata normal form. 2530/16524 useless extension candidates. Maximal degree in co-relation 51647. Up to 11361 conditions per place. [2023-09-01 07:22:05,274 INFO L137 encePairwiseOnDemand]: 629/642 looper letters, 198 selfloop transitions, 28 changer transitions 36/262 dead transitions. [2023-09-01 07:22:05,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 262 transitions, 1647 flow [2023-09-01 07:22:05,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 07:22:05,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 07:22:05,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5055 transitions. [2023-09-01 07:22:05,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144121987211018 [2023-09-01 07:22:05,279 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5055 transitions. [2023-09-01 07:22:05,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5055 transitions. [2023-09-01 07:22:05,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:22:05,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5055 transitions. [2023-09-01 07:22:05,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 266.05263157894734) internal successors, (5055), 19 states have internal predecessors, (5055), 0 states have call successors, (0), 0 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 07:22:05,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 642.0) internal successors, (12840), 20 states have internal predecessors, (12840), 0 states have call successors, (0), 0 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 07:22:05,291 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 642.0) internal successors, (12840), 20 states have internal predecessors, (12840), 0 states have call successors, (0), 0 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 07:22:05,291 INFO L175 Difference]: Start difference. First operand has 81 places, 67 transitions, 436 flow. Second operand 19 states and 5055 transitions. [2023-09-01 07:22:05,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 262 transitions, 1647 flow [2023-09-01 07:22:05,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 262 transitions, 1623 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 07:22:05,307 INFO L231 Difference]: Finished difference. Result has 100 places, 78 transitions, 621 flow [2023-09-01 07:22:05,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=621, PETRI_PLACES=100, PETRI_TRANSITIONS=78} [2023-09-01 07:22:05,308 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 53 predicate places. [2023-09-01 07:22:05,308 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 78 transitions, 621 flow [2023-09-01 07:22:05,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 255.75) internal successors, (4092), 16 states have internal predecessors, (4092), 0 states have call successors, (0), 0 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 07:22:05,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:22:05,309 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:22:05,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-09-01 07:22:05,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:22:05,514 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:22:05,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:22:05,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1741530693, now seen corresponding path program 1 times [2023-09-01 07:22:05,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:22:05,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738438069] [2023-09-01 07:22:05,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:05,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:22:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:05,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:22:05,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:22:05,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738438069] [2023-09-01 07:22:05,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738438069] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:22:05,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823405404] [2023-09-01 07:22:05,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:05,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:22:05,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:22:05,555 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 07:22:05,580 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 07:22:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:05,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 07:22:05,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:22:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:22:05,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:22:05,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:22:05,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823405404] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:22:05,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:22:05,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 13 [2023-09-01 07:22:05,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674130254] [2023-09-01 07:22:05,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:22:05,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 07:22:05,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:22:05,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 07:22:05,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-09-01 07:22:06,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 642 [2023-09-01 07:22:06,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 78 transitions, 621 flow. Second operand has 13 states, 13 states have (on average 262.0769230769231) internal successors, (3407), 13 states have internal predecessors, (3407), 0 states have call successors, (0), 0 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 07:22:06,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:22:06,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 642 [2023-09-01 07:22:06,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:22:08,091 INFO L130 PetriNetUnfolder]: 10000/17105 cut-off events. [2023-09-01 07:22:08,091 INFO L131 PetriNetUnfolder]: For 53362/53362 co-relation queries the response was YES. [2023-09-01 07:22:08,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56020 conditions, 17105 events. 10000/17105 cut-off events. For 53362/53362 co-relation queries the response was YES. Maximal size of possible extension queue 764. Compared 132469 event pairs, 125 based on Foata normal form. 0/13223 useless extension candidates. Maximal degree in co-relation 55992. Up to 8424 conditions per place. [2023-09-01 07:22:08,196 INFO L137 encePairwiseOnDemand]: 634/642 looper letters, 113 selfloop transitions, 24 changer transitions 16/153 dead transitions. [2023-09-01 07:22:08,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 153 transitions, 1363 flow [2023-09-01 07:22:08,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 07:22:08,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 07:22:08,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2706 transitions. [2023-09-01 07:22:08,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42149532710280374 [2023-09-01 07:22:08,199 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2706 transitions. [2023-09-01 07:22:08,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2706 transitions. [2023-09-01 07:22:08,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:22:08,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2706 transitions. [2023-09-01 07:22:08,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 270.6) internal successors, (2706), 10 states have internal predecessors, (2706), 0 states have call successors, (0), 0 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 07:22:08,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 642.0) internal successors, (7062), 11 states have internal predecessors, (7062), 0 states have call successors, (0), 0 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 07:22:08,206 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 642.0) internal successors, (7062), 11 states have internal predecessors, (7062), 0 states have call successors, (0), 0 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 07:22:08,206 INFO L175 Difference]: Start difference. First operand has 100 places, 78 transitions, 621 flow. Second operand 10 states and 2706 transitions. [2023-09-01 07:22:08,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 153 transitions, 1363 flow [2023-09-01 07:22:08,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 153 transitions, 1323 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-09-01 07:22:08,257 INFO L231 Difference]: Finished difference. Result has 105 places, 79 transitions, 644 flow [2023-09-01 07:22:08,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=644, PETRI_PLACES=105, PETRI_TRANSITIONS=79} [2023-09-01 07:22:08,257 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 58 predicate places. [2023-09-01 07:22:08,257 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 79 transitions, 644 flow [2023-09-01 07:22:08,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 262.0769230769231) internal successors, (3407), 13 states have internal predecessors, (3407), 0 states have call successors, (0), 0 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 07:22:08,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:22:08,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:22:08,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-09-01 07:22:08,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:22:08,459 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:22:08,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:22:08,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1741762149, now seen corresponding path program 1 times [2023-09-01 07:22:08,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:22:08,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345638756] [2023-09-01 07:22:08,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:08,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:22:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:08,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:22:08,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:22:08,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345638756] [2023-09-01 07:22:08,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345638756] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:22:08,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491156386] [2023-09-01 07:22:08,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:08,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:22:08,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:22:08,667 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 07:22:08,670 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 07:22:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:08,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 07:22:08,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:22:08,805 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 07:22:08,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:22:08,827 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 07:22:08,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:22:08,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:22:08,875 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_595 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_595) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456)) is different from false [2023-09-01 07:22:08,882 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:22:08,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-09-01 07:22:08,888 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:22:08,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-09-01 07:22:08,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-09-01 07:22:08,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-09-01 07:22:08,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491156386] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:22:08,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:22:08,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-09-01 07:22:08,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567922133] [2023-09-01 07:22:08,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:22:08,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 07:22:08,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:22:08,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 07:22:08,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=125, Unknown=1, NotChecked=22, Total=182 [2023-09-01 07:22:09,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 642 [2023-09-01 07:22:09,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 79 transitions, 644 flow. Second operand has 14 states, 14 states have (on average 231.78571428571428) internal successors, (3245), 14 states have internal predecessors, (3245), 0 states have call successors, (0), 0 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 07:22:09,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:22:09,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 642 [2023-09-01 07:22:09,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:22:11,659 INFO L130 PetriNetUnfolder]: 11384/21371 cut-off events. [2023-09-01 07:22:11,659 INFO L131 PetriNetUnfolder]: For 55645/55645 co-relation queries the response was YES. [2023-09-01 07:22:11,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74250 conditions, 21371 events. 11384/21371 cut-off events. For 55645/55645 co-relation queries the response was YES. Maximal size of possible extension queue 1041. Compared 189072 event pairs, 6534 based on Foata normal form. 0/17965 useless extension candidates. Maximal degree in co-relation 74222. Up to 14032 conditions per place. [2023-09-01 07:22:11,777 INFO L137 encePairwiseOnDemand]: 629/642 looper letters, 88 selfloop transitions, 32 changer transitions 0/120 dead transitions. [2023-09-01 07:22:11,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 120 transitions, 1110 flow [2023-09-01 07:22:11,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 07:22:11,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 07:22:11,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2141 transitions. [2023-09-01 07:22:11,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705434406368986 [2023-09-01 07:22:11,780 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2141 transitions. [2023-09-01 07:22:11,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2141 transitions. [2023-09-01 07:22:11,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:22:11,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2141 transitions. [2023-09-01 07:22:11,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 237.88888888888889) internal successors, (2141), 9 states have internal predecessors, (2141), 0 states have call successors, (0), 0 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 07:22:11,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 642.0) internal successors, (6420), 10 states have internal predecessors, (6420), 0 states have call successors, (0), 0 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 07:22:11,785 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 642.0) internal successors, (6420), 10 states have internal predecessors, (6420), 0 states have call successors, (0), 0 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 07:22:11,785 INFO L175 Difference]: Start difference. First operand has 105 places, 79 transitions, 644 flow. Second operand 9 states and 2141 transitions. [2023-09-01 07:22:11,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 120 transitions, 1110 flow [2023-09-01 07:22:12,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 120 transitions, 1079 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-09-01 07:22:12,239 INFO L231 Difference]: Finished difference. Result has 109 places, 90 transitions, 727 flow [2023-09-01 07:22:12,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=727, PETRI_PLACES=109, PETRI_TRANSITIONS=90} [2023-09-01 07:22:12,240 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 62 predicate places. [2023-09-01 07:22:12,240 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 90 transitions, 727 flow [2023-09-01 07:22:12,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 231.78571428571428) internal successors, (3245), 14 states have internal predecessors, (3245), 0 states have call successors, (0), 0 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 07:22:12,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:22:12,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:22:12,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-09-01 07:22:12,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-09-01 07:22:12,447 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:22:12,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:22:12,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1741762115, now seen corresponding path program 1 times [2023-09-01 07:22:12,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:22:12,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746410087] [2023-09-01 07:22:12,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:12,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:22:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:12,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:22:12,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:22:12,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746410087] [2023-09-01 07:22:12,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746410087] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:22:12,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948406939] [2023-09-01 07:22:12,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:12,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:22:12,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:22:12,643 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:22:12,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-09-01 07:22:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:12,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 07:22:12,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:22:12,789 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 07:22:12,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:22:12,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:22:12,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:22:12,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:22:12,860 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_632 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_632) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967296))) is different from false [2023-09-01 07:22:12,867 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:22:12,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-09-01 07:22:12,872 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:22:12,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-09-01 07:22:12,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-09-01 07:22:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-09-01 07:22:12,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948406939] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:22:12,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:22:12,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-09-01 07:22:12,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414731880] [2023-09-01 07:22:12,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:22:12,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 07:22:12,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:22:12,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 07:22:12,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=125, Unknown=1, NotChecked=22, Total=182 [2023-09-01 07:22:12,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 642 [2023-09-01 07:22:12,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 90 transitions, 727 flow. Second operand has 14 states, 14 states have (on average 231.78571428571428) internal successors, (3245), 14 states have internal predecessors, (3245), 0 states have call successors, (0), 0 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 07:22:12,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:22:12,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 642 [2023-09-01 07:22:12,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:22:15,632 INFO L130 PetriNetUnfolder]: 11358/21303 cut-off events. [2023-09-01 07:22:15,632 INFO L131 PetriNetUnfolder]: For 56509/56509 co-relation queries the response was YES. [2023-09-01 07:22:15,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77116 conditions, 21303 events. 11358/21303 cut-off events. For 56509/56509 co-relation queries the response was YES. Maximal size of possible extension queue 1042. Compared 188194 event pairs, 6526 based on Foata normal form. 0/17897 useless extension candidates. Maximal degree in co-relation 77086. Up to 13984 conditions per place. [2023-09-01 07:22:15,822 INFO L137 encePairwiseOnDemand]: 629/642 looper letters, 87 selfloop transitions, 34 changer transitions 0/121 dead transitions. [2023-09-01 07:22:15,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 121 transitions, 1171 flow [2023-09-01 07:22:15,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 07:22:15,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 07:22:15,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2140 transitions. [2023-09-01 07:22:15,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2023-09-01 07:22:15,824 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2140 transitions. [2023-09-01 07:22:15,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2140 transitions. [2023-09-01 07:22:15,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:22:15,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2140 transitions. [2023-09-01 07:22:15,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 237.77777777777777) internal successors, (2140), 9 states have internal predecessors, (2140), 0 states have call successors, (0), 0 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 07:22:15,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 642.0) internal successors, (6420), 10 states have internal predecessors, (6420), 0 states have call successors, (0), 0 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 07:22:15,829 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 642.0) internal successors, (6420), 10 states have internal predecessors, (6420), 0 states have call successors, (0), 0 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 07:22:15,829 INFO L175 Difference]: Start difference. First operand has 109 places, 90 transitions, 727 flow. Second operand 9 states and 2140 transitions. [2023-09-01 07:22:15,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 121 transitions, 1171 flow [2023-09-01 07:22:16,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 121 transitions, 1134 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-09-01 07:22:16,400 INFO L231 Difference]: Finished difference. Result has 114 places, 92 transitions, 770 flow [2023-09-01 07:22:16,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=770, PETRI_PLACES=114, PETRI_TRANSITIONS=92} [2023-09-01 07:22:16,401 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 67 predicate places. [2023-09-01 07:22:16,401 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 92 transitions, 770 flow [2023-09-01 07:22:16,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 231.78571428571428) internal successors, (3245), 14 states have internal predecessors, (3245), 0 states have call successors, (0), 0 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 07:22:16,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:22:16,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:22:16,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-09-01 07:22:16,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:22:16,603 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:22:16,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:22:16,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1741762091, now seen corresponding path program 1 times [2023-09-01 07:22:16,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:22:16,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239057505] [2023-09-01 07:22:16,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:16,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:22:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:16,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:22:16,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:22:16,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239057505] [2023-09-01 07:22:16,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239057505] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:22:16,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448233328] [2023-09-01 07:22:16,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:16,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:22:16,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:22:16,906 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:22:16,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-09-01 07:22:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:17,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 26 conjunts are in the unsatisfiable core [2023-09-01 07:22:17,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:22:17,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:22:17,029 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2023-09-01 07:22:17,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 24 [2023-09-01 07:22:17,053 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 07:22:17,075 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 07:22:17,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 07:22:17,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:22:17,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:22:17,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:22:17,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:22:17,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:22:19,460 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((~a2~0.offset Int) (v_ArrVal_673 (Array Int Int)) (~a2~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_673))) (let ((.cse0 (select (select .cse1 ~a2~0.base) ~a2~0.offset))) (or (< (+ 4294967295 .cse0) 0) (< .cse0 (+ 2147483649 (select (select .cse1 c_~a1~0.base) c_~a1~0.offset))) (<= 0 .cse0))))) (forall ((~a2~0.offset Int) (v_ArrVal_673 (Array Int Int)) (~a2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_673))) (let ((.cse2 (select (select .cse3 ~a2~0.base) ~a2~0.offset))) (or (< 0 .cse2) (< .cse2 (+ 2147483649 (select (select .cse3 c_~a1~0.base) c_~a1~0.offset))) (< .cse2 0)))))) is different from false [2023-09-01 07:22:19,486 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((~a2~0.offset Int) (v_ArrVal_672 (Array Int Int)) (v_ArrVal_673 (Array Int Int)) (~a2~0.base Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_672) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_673))) (let ((.cse0 (select (select .cse1 ~a2~0.base) ~a2~0.offset))) (or (< .cse0 0) (< .cse0 (+ 2147483649 (select (select .cse1 c_~a1~0.base) c_~a1~0.offset))) (< 0 .cse0))))) (forall ((~a2~0.offset Int) (v_ArrVal_672 (Array Int Int)) (v_ArrVal_673 (Array Int Int)) (~a2~0.base Int)) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_672) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_673))) (let ((.cse2 (select (select .cse3 ~a2~0.base) ~a2~0.offset))) (or (< (+ 4294967295 .cse2) 0) (< .cse2 (+ 2147483649 (select (select .cse3 c_~a1~0.base) c_~a1~0.offset))) (<= 0 .cse2)))))) is different from false [2023-09-01 07:22:19,596 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:22:19,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 132 [2023-09-01 07:22:19,650 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:22:19,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1755 treesize of output 1658 [2023-09-01 07:22:19,733 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:22:19,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 765 treesize of output 754 [2023-09-01 07:22:19,781 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:22:19,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 745 treesize of output 714 [2023-09-01 07:22:19,814 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:22:19,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 705 treesize of output 694 [2023-09-01 07:22:19,851 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:22:19,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 685 treesize of output 654 [2023-09-01 07:24:05,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-09-01 07:24:05,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448233328] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:24:05,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:24:05,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-09-01 07:24:05,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392583165] [2023-09-01 07:24:05,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:24:05,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-09-01 07:24:05,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:24:05,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-09-01 07:24:05,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=282, Unknown=3, NotChecked=70, Total=420 [2023-09-01 07:24:05,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 642 [2023-09-01 07:24:05,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 92 transitions, 770 flow. Second operand has 21 states, 21 states have (on average 226.38095238095238) internal successors, (4754), 21 states have internal predecessors, (4754), 0 states have call successors, (0), 0 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 07:24:05,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:24:05,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 642 [2023-09-01 07:24:05,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:24:08,238 INFO L130 PetriNetUnfolder]: 12947/23802 cut-off events. [2023-09-01 07:24:08,238 INFO L131 PetriNetUnfolder]: For 67945/67945 co-relation queries the response was YES. [2023-09-01 07:24:08,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89538 conditions, 23802 events. 12947/23802 cut-off events. For 67945/67945 co-relation queries the response was YES. Maximal size of possible extension queue 1151. Compared 207707 event pairs, 10661 based on Foata normal form. 0/20668 useless extension candidates. Maximal degree in co-relation 89508. Up to 18790 conditions per place. [2023-09-01 07:24:08,360 INFO L137 encePairwiseOnDemand]: 632/642 looper letters, 124 selfloop transitions, 29 changer transitions 4/157 dead transitions. [2023-09-01 07:24:08,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 157 transitions, 1590 flow [2023-09-01 07:24:08,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 07:24:08,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 07:24:08,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2337 transitions. [2023-09-01 07:24:08,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.364018691588785 [2023-09-01 07:24:08,364 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2337 transitions. [2023-09-01 07:24:08,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2337 transitions. [2023-09-01 07:24:08,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:24:08,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2337 transitions. [2023-09-01 07:24:08,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 233.7) internal successors, (2337), 10 states have internal predecessors, (2337), 0 states have call successors, (0), 0 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 07:24:08,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 642.0) internal successors, (7062), 11 states have internal predecessors, (7062), 0 states have call successors, (0), 0 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 07:24:08,372 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 642.0) internal successors, (7062), 11 states have internal predecessors, (7062), 0 states have call successors, (0), 0 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 07:24:08,372 INFO L175 Difference]: Start difference. First operand has 114 places, 92 transitions, 770 flow. Second operand 10 states and 2337 transitions. [2023-09-01 07:24:08,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 157 transitions, 1590 flow [2023-09-01 07:24:08,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 157 transitions, 1546 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-09-01 07:24:08,980 INFO L231 Difference]: Finished difference. Result has 122 places, 96 transitions, 838 flow [2023-09-01 07:24:08,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=838, PETRI_PLACES=122, PETRI_TRANSITIONS=96} [2023-09-01 07:24:08,980 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 75 predicate places. [2023-09-01 07:24:08,980 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 96 transitions, 838 flow [2023-09-01 07:24:08,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 226.38095238095238) internal successors, (4754), 21 states have internal predecessors, (4754), 0 states have call successors, (0), 0 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 07:24:08,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:24:08,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:24:08,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-09-01 07:24:09,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:24:09,182 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:24:09,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:24:09,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1741762090, now seen corresponding path program 1 times [2023-09-01 07:24:09,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:24:09,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040975759] [2023-09-01 07:24:09,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:24:09,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:24:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:24:09,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:24:09,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:24:09,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040975759] [2023-09-01 07:24:09,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040975759] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:24:09,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210009880] [2023-09-01 07:24:09,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:24:09,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:24:09,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:24:09,461 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:24:09,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-09-01 07:24:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:24:09,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2023-09-01 07:24:09,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:24:09,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:24:09,614 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2023-09-01 07:24:09,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 24 [2023-09-01 07:24:09,639 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 07:24:09,665 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 07:24:09,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 07:24:09,683 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 07:24:09,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:24:09,700 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 07:24:09,719 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 15 treesize of output 7 [2023-09-01 07:24:09,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:24:09,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:24:09,763 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_714 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_714) c_~a1~0.base) c_~a1~0.offset) 2147483648)) is different from false [2023-09-01 07:24:09,768 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_713 (Array Int Int)) (v_ArrVal_714 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_713) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_714) c_~a1~0.base) c_~a1~0.offset) 2147483648)) is different from false [2023-09-01 07:24:09,797 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:09,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-09-01 07:24:09,804 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:09,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 59 [2023-09-01 07:24:09,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-09-01 07:24:09,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-09-01 07:24:09,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-09-01 07:24:09,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210009880] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:24:09,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:24:09,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-09-01 07:24:09,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322008029] [2023-09-01 07:24:09,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:24:09,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 07:24:09,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:24:09,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 07:24:09,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=251, Unknown=2, NotChecked=66, Total=380 [2023-09-01 07:24:09,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 642 [2023-09-01 07:24:09,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 96 transitions, 838 flow. Second operand has 20 states, 20 states have (on average 226.4) internal successors, (4528), 20 states have internal predecessors, (4528), 0 states have call successors, (0), 0 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 07:24:09,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:24:09,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 642 [2023-09-01 07:24:09,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:24:12,641 INFO L130 PetriNetUnfolder]: 12371/22556 cut-off events. [2023-09-01 07:24:12,641 INFO L131 PetriNetUnfolder]: For 65112/65112 co-relation queries the response was YES. [2023-09-01 07:24:12,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88627 conditions, 22556 events. 12371/22556 cut-off events. For 65112/65112 co-relation queries the response was YES. Maximal size of possible extension queue 1073. Compared 193342 event pairs, 10121 based on Foata normal form. 330/20734 useless extension candidates. Maximal degree in co-relation 88594. Up to 18337 conditions per place. [2023-09-01 07:24:12,796 INFO L137 encePairwiseOnDemand]: 632/642 looper letters, 122 selfloop transitions, 30 changer transitions 3/155 dead transitions. [2023-09-01 07:24:12,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 155 transitions, 1617 flow [2023-09-01 07:24:12,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 07:24:12,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 07:24:12,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2334 transitions. [2023-09-01 07:24:12,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36355140186915885 [2023-09-01 07:24:12,799 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2334 transitions. [2023-09-01 07:24:12,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2334 transitions. [2023-09-01 07:24:12,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:24:12,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2334 transitions. [2023-09-01 07:24:12,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 233.4) internal successors, (2334), 10 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:24:12,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 642.0) internal successors, (7062), 11 states have internal predecessors, (7062), 0 states have call successors, (0), 0 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 07:24:12,807 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 642.0) internal successors, (7062), 11 states have internal predecessors, (7062), 0 states have call successors, (0), 0 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 07:24:12,807 INFO L175 Difference]: Start difference. First operand has 122 places, 96 transitions, 838 flow. Second operand 10 states and 2334 transitions. [2023-09-01 07:24:12,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 155 transitions, 1617 flow [2023-09-01 07:24:13,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 155 transitions, 1580 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-09-01 07:24:13,541 INFO L231 Difference]: Finished difference. Result has 127 places, 95 transitions, 858 flow [2023-09-01 07:24:13,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=858, PETRI_PLACES=127, PETRI_TRANSITIONS=95} [2023-09-01 07:24:13,542 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 80 predicate places. [2023-09-01 07:24:13,542 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 95 transitions, 858 flow [2023-09-01 07:24:13,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 226.4) internal successors, (4528), 20 states have internal predecessors, (4528), 0 states have call successors, (0), 0 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 07:24:13,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:24:13,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:24:13,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-09-01 07:24:13,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-09-01 07:24:13,745 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:24:13,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:24:13,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1751997152, now seen corresponding path program 1 times [2023-09-01 07:24:13,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:24:13,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727800212] [2023-09-01 07:24:13,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:24:13,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:24:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:24:14,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:24:14,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:24:14,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727800212] [2023-09-01 07:24:14,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727800212] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:24:14,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306116589] [2023-09-01 07:24:14,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:24:14,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:24:14,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:24:14,217 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:24:14,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-09-01 07:24:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:24:14,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 28 conjunts are in the unsatisfiable core [2023-09-01 07:24:14,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:24:14,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:24:14,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:24:14,357 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 07:24:14,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-09-01 07:24:14,399 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 07:24:14,432 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 07:24:14,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 07:24:14,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:24:14,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:24:14,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:24:14,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:24:14,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:24:14,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:24:14,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:24:14,898 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((~a2~0.offset Int) (v_ArrVal_760 (Array Int Int)) (~a2~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_760))) (let ((.cse0 (select (select .cse1 ~a2~0.base) ~a2~0.offset))) (or (< 0 .cse0) (< .cse0 (+ 2147483649 (select (select .cse1 c_~a1~0.base) c_~a1~0.offset))) (< .cse0 0))))) (forall ((~a2~0.offset Int) (v_ArrVal_760 (Array Int Int)) (~a2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_760))) (let ((.cse2 (select (select .cse3 ~a2~0.base) ~a2~0.offset))) (or (<= 0 .cse2) (< .cse2 (+ 2147483649 (select (select .cse3 c_~a1~0.base) c_~a1~0.offset))) (< (+ 4294967295 .cse2) 0)))))) is different from false [2023-09-01 07:24:16,983 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((~a2~0.offset Int) (v_ArrVal_759 (Array Int Int)) (v_ArrVal_760 (Array Int Int)) (~a2~0.base Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_759) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_760))) (let ((.cse0 (select (select .cse1 ~a2~0.base) ~a2~0.offset))) (or (< (+ 4294967295 .cse0) 0) (<= 0 .cse0) (< .cse0 (+ 2147483649 (select (select .cse1 c_~a1~0.base) c_~a1~0.offset))))))) (forall ((~a2~0.offset Int) (v_ArrVal_759 (Array Int Int)) (v_ArrVal_760 (Array Int Int)) (~a2~0.base Int)) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_759) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_760))) (let ((.cse2 (select (select .cse3 ~a2~0.base) ~a2~0.offset))) (or (< 0 .cse2) (< .cse2 0) (< .cse2 (+ 2147483649 (select (select .cse3 c_~a1~0.base) c_~a1~0.offset)))))))) is different from false [2023-09-01 07:24:17,195 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:17,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 239 treesize of output 156 [2023-09-01 07:24:17,273 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:17,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47363 treesize of output 45042 [2023-09-01 07:24:17,845 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:17,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2805 treesize of output 2778 [2023-09-01 07:24:17,907 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:17,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2769 treesize of output 2706 [2023-09-01 07:24:17,993 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:17,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2697 treesize of output 2562 [2023-09-01 07:24:18,081 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:18,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2553 treesize of output 2526 [2023-09-01 07:24:18,174 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:18,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2517 treesize of output 2382 [2023-09-01 07:24:18,243 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:18,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2373 treesize of output 2310 [2023-09-01 07:24:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-09-01 07:24:23,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306116589] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:24:23,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:24:23,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-09-01 07:24:23,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487509427] [2023-09-01 07:24:23,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:24:23,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 07:24:23,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:24:23,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 07:24:23,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=377, Unknown=11, NotChecked=82, Total=552 [2023-09-01 07:24:23,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 642 [2023-09-01 07:24:23,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 95 transitions, 858 flow. Second operand has 24 states, 24 states have (on average 219.375) internal successors, (5265), 24 states have internal predecessors, (5265), 0 states have call successors, (0), 0 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 07:24:23,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:24:23,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 642 [2023-09-01 07:24:23,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:24:26,281 INFO L130 PetriNetUnfolder]: 11938/21813 cut-off events. [2023-09-01 07:24:26,282 INFO L131 PetriNetUnfolder]: For 79750/79750 co-relation queries the response was YES. [2023-09-01 07:24:26,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85694 conditions, 21813 events. 11938/21813 cut-off events. For 79750/79750 co-relation queries the response was YES. Maximal size of possible extension queue 1047. Compared 189046 event pairs, 5886 based on Foata normal form. 310/20605 useless extension candidates. Maximal degree in co-relation 85661. Up to 10805 conditions per place. [2023-09-01 07:24:26,447 INFO L137 encePairwiseOnDemand]: 632/642 looper letters, 155 selfloop transitions, 28 changer transitions 3/186 dead transitions. [2023-09-01 07:24:26,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 186 transitions, 1999 flow [2023-09-01 07:24:26,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 07:24:26,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 07:24:26,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2058 transitions. [2023-09-01 07:24:26,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3561786085150571 [2023-09-01 07:24:26,450 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2058 transitions. [2023-09-01 07:24:26,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2058 transitions. [2023-09-01 07:24:26,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:24:26,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2058 transitions. [2023-09-01 07:24:26,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 228.66666666666666) internal successors, (2058), 9 states have internal predecessors, (2058), 0 states have call successors, (0), 0 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 07:24:26,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 642.0) internal successors, (6420), 10 states have internal predecessors, (6420), 0 states have call successors, (0), 0 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 07:24:26,457 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 642.0) internal successors, (6420), 10 states have internal predecessors, (6420), 0 states have call successors, (0), 0 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 07:24:26,457 INFO L175 Difference]: Start difference. First operand has 127 places, 95 transitions, 858 flow. Second operand 9 states and 2058 transitions. [2023-09-01 07:24:26,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 186 transitions, 1999 flow [2023-09-01 07:24:27,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 186 transitions, 1974 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 07:24:27,026 INFO L231 Difference]: Finished difference. Result has 133 places, 98 transitions, 952 flow [2023-09-01 07:24:27,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=952, PETRI_PLACES=133, PETRI_TRANSITIONS=98} [2023-09-01 07:24:27,027 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 86 predicate places. [2023-09-01 07:24:27,027 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 98 transitions, 952 flow [2023-09-01 07:24:27,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 219.375) internal successors, (5265), 24 states have internal predecessors, (5265), 0 states have call successors, (0), 0 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 07:24:27,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:24:27,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:24:27,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-09-01 07:24:27,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:24:27,234 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:24:27,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:24:27,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1751997176, now seen corresponding path program 1 times [2023-09-01 07:24:27,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:24:27,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443484027] [2023-09-01 07:24:27,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:24:27,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:24:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:24:27,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:24:27,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:24:27,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443484027] [2023-09-01 07:24:27,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443484027] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:24:27,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102018339] [2023-09-01 07:24:27,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:24:27,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:24:27,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:24:27,516 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:24:27,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-09-01 07:24:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:24:27,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 27 conjunts are in the unsatisfiable core [2023-09-01 07:24:27,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:24:27,686 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 07:24:27,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:24:27,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:24:27,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:24:27,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:24:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:24:27,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:24:27,817 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_802 (Array Int Int))) (< 0 (+ 4294967296 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_802) c_~a2~0.base) c_~a2~0.offset)))) is different from false [2023-09-01 07:24:27,856 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:27,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-09-01 07:24:27,865 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:27,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 135 [2023-09-01 07:24:27,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-09-01 07:24:27,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2023-09-01 07:24:27,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:24:27,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102018339] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:24:27,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:24:27,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-09-01 07:24:27,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778699606] [2023-09-01 07:24:27,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:24:27,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 07:24:27,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:24:27,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 07:24:27,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=196, Unknown=1, NotChecked=28, Total=272 [2023-09-01 07:24:28,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 642 [2023-09-01 07:24:28,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 98 transitions, 952 flow. Second operand has 17 states, 17 states have (on average 229.7058823529412) internal successors, (3905), 17 states have internal predecessors, (3905), 0 states have call successors, (0), 0 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 07:24:28,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:24:28,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 642 [2023-09-01 07:24:28,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:24:30,799 INFO L130 PetriNetUnfolder]: 11441/21254 cut-off events. [2023-09-01 07:24:30,799 INFO L131 PetriNetUnfolder]: For 89223/89223 co-relation queries the response was YES. [2023-09-01 07:24:30,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88547 conditions, 21254 events. 11441/21254 cut-off events. For 89223/89223 co-relation queries the response was YES. Maximal size of possible extension queue 1041. Compared 186710 event pairs, 4427 based on Foata normal form. 620/20356 useless extension candidates. Maximal degree in co-relation 88510. Up to 8766 conditions per place. [2023-09-01 07:24:30,959 INFO L137 encePairwiseOnDemand]: 630/642 looper letters, 105 selfloop transitions, 31 changer transitions 0/136 dead transitions. [2023-09-01 07:24:30,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 136 transitions, 1526 flow [2023-09-01 07:24:30,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:24:30,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:24:30,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1666 transitions. [2023-09-01 07:24:30,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3707165109034268 [2023-09-01 07:24:30,961 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1666 transitions. [2023-09-01 07:24:30,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1666 transitions. [2023-09-01 07:24:30,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:24:30,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1666 transitions. [2023-09-01 07:24:30,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 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 07:24:30,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 642.0) internal successors, (5136), 8 states have internal predecessors, (5136), 0 states have call successors, (0), 0 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 07:24:30,967 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 642.0) internal successors, (5136), 8 states have internal predecessors, (5136), 0 states have call successors, (0), 0 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 07:24:30,967 INFO L175 Difference]: Start difference. First operand has 133 places, 98 transitions, 952 flow. Second operand 7 states and 1666 transitions. [2023-09-01 07:24:30,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 136 transitions, 1526 flow [2023-09-01 07:24:31,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 136 transitions, 1496 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-09-01 07:24:31,656 INFO L231 Difference]: Finished difference. Result has 135 places, 99 transitions, 1017 flow [2023-09-01 07:24:31,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1017, PETRI_PLACES=135, PETRI_TRANSITIONS=99} [2023-09-01 07:24:31,656 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 88 predicate places. [2023-09-01 07:24:31,656 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 99 transitions, 1017 flow [2023-09-01 07:24:31,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 229.7058823529412) internal successors, (3905), 17 states have internal predecessors, (3905), 0 states have call successors, (0), 0 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 07:24:31,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:24:31,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:24:31,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-09-01 07:24:31,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:24:31,857 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:24:31,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:24:31,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1751997151, now seen corresponding path program 1 times [2023-09-01 07:24:31,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:24:31,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349277912] [2023-09-01 07:24:31,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:24:31,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:24:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:24:32,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:24:32,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:24:32,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349277912] [2023-09-01 07:24:32,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349277912] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:24:32,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229160659] [2023-09-01 07:24:32,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:24:32,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:24:32,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:24:32,201 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:24:32,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-09-01 07:24:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:24:32,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 30 conjunts are in the unsatisfiable core [2023-09-01 07:24:32,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:24:32,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:24:32,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:24:32,372 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 07:24:32,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-09-01 07:24:32,417 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 07:24:32,456 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 07:24:32,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 07:24:32,480 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 07:24:32,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:24:32,505 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 07:24:32,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:24:32,532 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 07:24:32,550 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 15 treesize of output 7 [2023-09-01 07:24:32,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:24:32,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:24:32,604 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_848 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_848) c_~a1~0.base) c_~a1~0.offset) 2147483648)) is different from false [2023-09-01 07:24:32,611 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_847 (Array Int Int)) (v_ArrVal_848 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_847) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_848) c_~a1~0.base) c_~a1~0.offset) 2147483648)) is different from false [2023-09-01 07:24:32,674 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:32,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2023-09-01 07:24:32,682 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:32,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 245 treesize of output 237 [2023-09-01 07:24:32,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 104 [2023-09-01 07:24:32,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 96 [2023-09-01 07:24:32,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 46 [2023-09-01 07:24:32,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-09-01 07:24:32,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229160659] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:24:32,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:24:32,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-09-01 07:24:32,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154601810] [2023-09-01 07:24:32,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:24:32,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-09-01 07:24:32,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:24:32,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-09-01 07:24:32,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=344, Unknown=4, NotChecked=78, Total=506 [2023-09-01 07:24:32,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 642 [2023-09-01 07:24:32,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 99 transitions, 1017 flow. Second operand has 23 states, 23 states have (on average 225.3913043478261) internal successors, (5184), 23 states have internal predecessors, (5184), 0 states have call successors, (0), 0 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 07:24:32,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:24:32,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 642 [2023-09-01 07:24:32,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:24:35,602 INFO L130 PetriNetUnfolder]: 11008/20511 cut-off events. [2023-09-01 07:24:35,603 INFO L131 PetriNetUnfolder]: For 96338/96338 co-relation queries the response was YES. [2023-09-01 07:24:35,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88358 conditions, 20511 events. 11008/20511 cut-off events. For 96338/96338 co-relation queries the response was YES. Maximal size of possible extension queue 992. Compared 179447 event pairs, 5822 based on Foata normal form. 310/19321 useless extension candidates. Maximal degree in co-relation 88320. Up to 11309 conditions per place. [2023-09-01 07:24:35,724 INFO L137 encePairwiseOnDemand]: 633/642 looper letters, 136 selfloop transitions, 26 changer transitions 3/165 dead transitions. [2023-09-01 07:24:35,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 165 transitions, 1913 flow [2023-09-01 07:24:35,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 07:24:35,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 07:24:35,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1873 transitions. [2023-09-01 07:24:35,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36468068535825543 [2023-09-01 07:24:35,727 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1873 transitions. [2023-09-01 07:24:35,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1873 transitions. [2023-09-01 07:24:35,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:24:35,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1873 transitions. [2023-09-01 07:24:35,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 234.125) internal successors, (1873), 8 states have internal predecessors, (1873), 0 states have call successors, (0), 0 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 07:24:35,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 642.0) internal successors, (5778), 9 states have internal predecessors, (5778), 0 states have call successors, (0), 0 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 07:24:35,732 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 642.0) internal successors, (5778), 9 states have internal predecessors, (5778), 0 states have call successors, (0), 0 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 07:24:35,732 INFO L175 Difference]: Start difference. First operand has 135 places, 99 transitions, 1017 flow. Second operand 8 states and 1873 transitions. [2023-09-01 07:24:35,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 165 transitions, 1913 flow [2023-09-01 07:24:36,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 165 transitions, 1836 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-09-01 07:24:36,227 INFO L231 Difference]: Finished difference. Result has 135 places, 98 transitions, 986 flow [2023-09-01 07:24:36,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=986, PETRI_PLACES=135, PETRI_TRANSITIONS=98} [2023-09-01 07:24:36,227 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 88 predicate places. [2023-09-01 07:24:36,228 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 98 transitions, 986 flow [2023-09-01 07:24:36,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 225.3913043478261) internal successors, (5184), 23 states have internal predecessors, (5184), 0 states have call successors, (0), 0 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 07:24:36,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:24:36,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:24:36,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-09-01 07:24:36,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:24:36,433 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:24:36,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:24:36,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1751997210, now seen corresponding path program 1 times [2023-09-01 07:24:36,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:24:36,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037383289] [2023-09-01 07:24:36,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:24:36,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:24:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:24:36,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:24:36,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:24:36,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037383289] [2023-09-01 07:24:36,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037383289] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:24:36,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159485382] [2023-09-01 07:24:36,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:24:36,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:24:36,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:24:36,669 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:24:36,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-09-01 07:24:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:24:36,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 39 conjunts are in the unsatisfiable core [2023-09-01 07:24:36,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:24:36,824 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-09-01 07:24:36,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 12 treesize of output 16 [2023-09-01 07:24:36,863 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2023-09-01 07:24:36,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 25 [2023-09-01 07:24:36,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 07:24:36,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 07:24:36,896 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 07:24:36,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:24:36,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:24:36,985 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:36,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-09-01 07:24:36,992 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:36,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 59 [2023-09-01 07:24:36,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-09-01 07:24:36,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-09-01 07:24:37,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:24:37,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159485382] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:24:37,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:24:37,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-09-01 07:24:37,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744735475] [2023-09-01 07:24:37,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:24:37,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 07:24:37,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:24:37,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 07:24:37,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=167, Unknown=5, NotChecked=0, Total=210 [2023-09-01 07:24:37,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 642 [2023-09-01 07:24:37,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 98 transitions, 986 flow. Second operand has 15 states, 15 states have (on average 236.8) internal successors, (3552), 15 states have internal predecessors, (3552), 0 states have call successors, (0), 0 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 07:24:37,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:24:37,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 642 [2023-09-01 07:24:37,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:24:39,863 INFO L130 PetriNetUnfolder]: 10142/19025 cut-off events. [2023-09-01 07:24:39,864 INFO L131 PetriNetUnfolder]: For 87593/87593 co-relation queries the response was YES. [2023-09-01 07:24:39,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80603 conditions, 19025 events. 10142/19025 cut-off events. For 87593/87593 co-relation queries the response was YES. Maximal size of possible extension queue 924. Compared 165330 event pairs, 4012 based on Foata normal form. 620/18181 useless extension candidates. Maximal degree in co-relation 80568. Up to 6849 conditions per place. [2023-09-01 07:24:39,993 INFO L137 encePairwiseOnDemand]: 630/642 looper letters, 95 selfloop transitions, 27 changer transitions 12/134 dead transitions. [2023-09-01 07:24:39,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 134 transitions, 1542 flow [2023-09-01 07:24:39,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:24:39,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:24:39,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1713 transitions. [2023-09-01 07:24:39,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38117489986648867 [2023-09-01 07:24:39,995 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1713 transitions. [2023-09-01 07:24:39,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1713 transitions. [2023-09-01 07:24:39,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:24:39,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1713 transitions. [2023-09-01 07:24:39,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 244.71428571428572) internal successors, (1713), 7 states have internal predecessors, (1713), 0 states have call successors, (0), 0 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 07:24:40,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 642.0) internal successors, (5136), 8 states have internal predecessors, (5136), 0 states have call successors, (0), 0 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 07:24:40,000 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 642.0) internal successors, (5136), 8 states have internal predecessors, (5136), 0 states have call successors, (0), 0 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 07:24:40,000 INFO L175 Difference]: Start difference. First operand has 135 places, 98 transitions, 986 flow. Second operand 7 states and 1713 transitions. [2023-09-01 07:24:40,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 134 transitions, 1542 flow [2023-09-01 07:24:40,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 134 transitions, 1493 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 07:24:40,479 INFO L231 Difference]: Finished difference. Result has 135 places, 89 transitions, 881 flow [2023-09-01 07:24:40,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=881, PETRI_PLACES=135, PETRI_TRANSITIONS=89} [2023-09-01 07:24:40,479 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 88 predicate places. [2023-09-01 07:24:40,479 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 89 transitions, 881 flow [2023-09-01 07:24:40,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 236.8) internal successors, (3552), 15 states have internal predecessors, (3552), 0 states have call successors, (0), 0 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 07:24:40,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:24:40,480 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:24:40,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-09-01 07:24:40,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-09-01 07:24:40,684 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:24:40,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:24:40,684 INFO L85 PathProgramCache]: Analyzing trace with hash 2073069956, now seen corresponding path program 1 times [2023-09-01 07:24:40,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:24:40,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651395416] [2023-09-01 07:24:40,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:24:40,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:24:40,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:24:40,728 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 07:24:40,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:24:40,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651395416] [2023-09-01 07:24:40,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651395416] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:24:40,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972049468] [2023-09-01 07:24:40,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:24:40,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:24:40,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:24:40,731 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:24:40,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-09-01 07:24:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:24:40,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 07:24:40,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:24:40,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 07:24:40,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:24:40,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 07:24:40,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972049468] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:24:40,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:24:40,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-09-01 07:24:40,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043158781] [2023-09-01 07:24:40,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:24:40,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 07:24:40,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:24:40,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 07:24:40,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-09-01 07:24:41,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 642 [2023-09-01 07:24:41,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 89 transitions, 881 flow. Second operand has 13 states, 13 states have (on average 262.2307692307692) internal successors, (3409), 13 states have internal predecessors, (3409), 0 states have call successors, (0), 0 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 07:24:41,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:24:41,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 642 [2023-09-01 07:24:41,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:24:44,242 INFO L130 PetriNetUnfolder]: 12162/22631 cut-off events. [2023-09-01 07:24:44,243 INFO L131 PetriNetUnfolder]: For 114021/114021 co-relation queries the response was YES. [2023-09-01 07:24:44,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97677 conditions, 22631 events. 12162/22631 cut-off events. For 114021/114021 co-relation queries the response was YES. Maximal size of possible extension queue 1068. Compared 198521 event pairs, 4563 based on Foata normal form. 0/20885 useless extension candidates. Maximal degree in co-relation 97643. Up to 8356 conditions per place. [2023-09-01 07:24:44,356 INFO L137 encePairwiseOnDemand]: 633/642 looper letters, 135 selfloop transitions, 13 changer transitions 38/186 dead transitions. [2023-09-01 07:24:44,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 186 transitions, 1969 flow [2023-09-01 07:24:44,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 07:24:44,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 07:24:44,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3236 transitions. [2023-09-01 07:24:44,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4200415368639668 [2023-09-01 07:24:44,360 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3236 transitions. [2023-09-01 07:24:44,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3236 transitions. [2023-09-01 07:24:44,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:24:44,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3236 transitions. [2023-09-01 07:24:44,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 269.6666666666667) internal successors, (3236), 12 states have internal predecessors, (3236), 0 states have call successors, (0), 0 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 07:24:44,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 642.0) internal successors, (8346), 13 states have internal predecessors, (8346), 0 states have call successors, (0), 0 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 07:24:44,369 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 642.0) internal successors, (8346), 13 states have internal predecessors, (8346), 0 states have call successors, (0), 0 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 07:24:44,369 INFO L175 Difference]: Start difference. First operand has 135 places, 89 transitions, 881 flow. Second operand 12 states and 3236 transitions. [2023-09-01 07:24:44,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 186 transitions, 1969 flow [2023-09-01 07:24:44,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 186 transitions, 1837 flow, removed 38 selfloop flow, removed 8 redundant places. [2023-09-01 07:24:44,674 INFO L231 Difference]: Finished difference. Result has 134 places, 90 transitions, 852 flow [2023-09-01 07:24:44,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=852, PETRI_PLACES=134, PETRI_TRANSITIONS=90} [2023-09-01 07:24:44,675 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 87 predicate places. [2023-09-01 07:24:44,675 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 90 transitions, 852 flow [2023-09-01 07:24:44,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 262.2307692307692) internal successors, (3409), 13 states have internal predecessors, (3409), 0 states have call successors, (0), 0 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 07:24:44,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:24:44,676 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-09-01 07:24:44,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-09-01 07:24:44,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-09-01 07:24:44,877 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:24:44,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:24:44,877 INFO L85 PathProgramCache]: Analyzing trace with hash 992774146, now seen corresponding path program 2 times [2023-09-01 07:24:44,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:24:44,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074754541] [2023-09-01 07:24:44,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:24:44,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:24:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:24:45,028 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:24:45,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:24:45,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074754541] [2023-09-01 07:24:45,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074754541] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:24:45,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814253340] [2023-09-01 07:24:45,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:24:45,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:24:45,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:24:45,033 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:24:45,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-09-01 07:24:45,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:24:45,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:24:45,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 07:24:45,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:24:45,200 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-09-01 07:24:45,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:24:45,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814253340] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:24:45,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:24:45,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-09-01 07:24:45,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909497866] [2023-09-01 07:24:45,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:24:45,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:24:45,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:24:45,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:24:45,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-09-01 07:24:45,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 642 [2023-09-01 07:24:45,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 90 transitions, 852 flow. Second operand has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 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 07:24:45,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:24:45,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 642 [2023-09-01 07:24:45,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:24:47,565 INFO L130 PetriNetUnfolder]: 10704/19874 cut-off events. [2023-09-01 07:24:47,565 INFO L131 PetriNetUnfolder]: For 68963/68963 co-relation queries the response was YES. [2023-09-01 07:24:47,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77799 conditions, 19874 events. 10704/19874 cut-off events. For 68963/68963 co-relation queries the response was YES. Maximal size of possible extension queue 1019. Compared 170948 event pairs, 9315 based on Foata normal form. 3/18833 useless extension candidates. Maximal degree in co-relation 77764. Up to 19874 conditions per place. [2023-09-01 07:24:47,698 INFO L137 encePairwiseOnDemand]: 640/642 looper letters, 81 selfloop transitions, 1 changer transitions 6/88 dead transitions. [2023-09-01 07:24:47,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 88 transitions, 978 flow [2023-09-01 07:24:47,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:24:47,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:24:47,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 845 transitions. [2023-09-01 07:24:47,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4387331256490135 [2023-09-01 07:24:47,700 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 845 transitions. [2023-09-01 07:24:47,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 845 transitions. [2023-09-01 07:24:47,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:24:47,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 845 transitions. [2023-09-01 07:24:47,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 281.6666666666667) internal successors, (845), 3 states have internal predecessors, (845), 0 states have call successors, (0), 0 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 07:24:47,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 642.0) internal successors, (2568), 4 states have internal predecessors, (2568), 0 states have call successors, (0), 0 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 07:24:47,702 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 642.0) internal successors, (2568), 4 states have internal predecessors, (2568), 0 states have call successors, (0), 0 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 07:24:47,703 INFO L175 Difference]: Start difference. First operand has 134 places, 90 transitions, 852 flow. Second operand 3 states and 845 transitions. [2023-09-01 07:24:47,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 88 transitions, 978 flow [2023-09-01 07:24:48,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 88 transitions, 873 flow, removed 11 selfloop flow, removed 15 redundant places. [2023-09-01 07:24:48,129 INFO L231 Difference]: Finished difference. Result has 112 places, 82 transitions, 644 flow [2023-09-01 07:24:48,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=644, PETRI_PLACES=112, PETRI_TRANSITIONS=82} [2023-09-01 07:24:48,130 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 65 predicate places. [2023-09-01 07:24:48,130 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 82 transitions, 644 flow [2023-09-01 07:24:48,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 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 07:24:48,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:24:48,130 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:24:48,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-09-01 07:24:48,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:24:48,331 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:24:48,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:24:48,331 INFO L85 PathProgramCache]: Analyzing trace with hash 255573001, now seen corresponding path program 1 times [2023-09-01 07:24:48,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:24:48,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590707676] [2023-09-01 07:24:48,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:24:48,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:24:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:24:48,856 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:24:48,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:24:48,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590707676] [2023-09-01 07:24:48,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590707676] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:24:48,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289559964] [2023-09-01 07:24:48,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:24:48,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:24:48,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:24:48,861 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:24:48,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-09-01 07:24:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:24:49,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 34 conjunts are in the unsatisfiable core [2023-09-01 07:24:49,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:24:49,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:24:49,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:24:49,025 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 07:24:49,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-09-01 07:24:49,108 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 07:24:49,152 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 07:24:49,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 07:24:49,182 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 07:24:49,196 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 07:24:49,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:24:49,227 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 07:24:49,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:24:49,259 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 07:24:49,325 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:24:49,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:24:49,461 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1054 (Array Int Int)) (v_ArrVal_1053 (Array Int Int)) (v_ArrVal_1052 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1052) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1053) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1054) c_~a1~0.base) (+ c_~a1~0.offset 4)) 9223372039002259456)) is different from false [2023-09-01 07:24:49,508 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:49,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-09-01 07:24:49,516 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:49,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1105 treesize of output 1057 [2023-09-01 07:24:49,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2023-09-01 07:24:49,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 102 [2023-09-01 07:24:49,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-09-01 07:24:49,713 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2023-09-01 07:24:49,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289559964] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:24:49,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:24:49,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 28 [2023-09-01 07:24:49,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432693490] [2023-09-01 07:24:49,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:24:49,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-09-01 07:24:49,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:24:49,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-09-01 07:24:49,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=690, Unknown=12, NotChecked=54, Total=870 [2023-09-01 07:24:49,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 642 [2023-09-01 07:24:49,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 82 transitions, 644 flow. Second operand has 30 states, 30 states have (on average 206.3) internal successors, (6189), 30 states have internal predecessors, (6189), 0 states have call successors, (0), 0 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 07:24:49,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:24:49,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 642 [2023-09-01 07:24:49,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:24:56,037 INFO L130 PetriNetUnfolder]: 15504/28349 cut-off events. [2023-09-01 07:24:56,038 INFO L131 PetriNetUnfolder]: For 77885/77885 co-relation queries the response was YES. [2023-09-01 07:24:56,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99417 conditions, 28349 events. 15504/28349 cut-off events. For 77885/77885 co-relation queries the response was YES. Maximal size of possible extension queue 1374. Compared 260079 event pairs, 3974 based on Foata normal form. 940/27425 useless extension candidates. Maximal degree in co-relation 99398. Up to 9289 conditions per place. [2023-09-01 07:24:56,194 INFO L137 encePairwiseOnDemand]: 630/642 looper letters, 234 selfloop transitions, 28 changer transitions 0/262 dead transitions. [2023-09-01 07:24:56,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 262 transitions, 2438 flow [2023-09-01 07:24:56,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 07:24:56,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 07:24:56,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3451 transitions. [2023-09-01 07:24:56,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33596183800623053 [2023-09-01 07:24:56,197 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3451 transitions. [2023-09-01 07:24:56,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3451 transitions. [2023-09-01 07:24:56,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:24:56,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3451 transitions. [2023-09-01 07:24:56,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 215.6875) internal successors, (3451), 16 states have internal predecessors, (3451), 0 states have call successors, (0), 0 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 07:24:56,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 642.0) internal successors, (10914), 17 states have internal predecessors, (10914), 0 states have call successors, (0), 0 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 07:24:56,204 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 642.0) internal successors, (10914), 17 states have internal predecessors, (10914), 0 states have call successors, (0), 0 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 07:24:56,204 INFO L175 Difference]: Start difference. First operand has 112 places, 82 transitions, 644 flow. Second operand 16 states and 3451 transitions. [2023-09-01 07:24:56,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 262 transitions, 2438 flow [2023-09-01 07:24:56,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 262 transitions, 2329 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-09-01 07:24:56,279 INFO L231 Difference]: Finished difference. Result has 118 places, 93 transitions, 785 flow [2023-09-01 07:24:56,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=785, PETRI_PLACES=118, PETRI_TRANSITIONS=93} [2023-09-01 07:24:56,280 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 71 predicate places. [2023-09-01 07:24:56,280 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 93 transitions, 785 flow [2023-09-01 07:24:56,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 206.3) internal successors, (6189), 30 states have internal predecessors, (6189), 0 states have call successors, (0), 0 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 07:24:56,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:24:56,281 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:24:56,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-09-01 07:24:56,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:24:56,490 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:24:56,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:24:56,490 INFO L85 PathProgramCache]: Analyzing trace with hash 255573025, now seen corresponding path program 1 times [2023-09-01 07:24:56,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:24:56,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45925669] [2023-09-01 07:24:56,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:24:56,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:24:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:24:56,946 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:24:56,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:24:56,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45925669] [2023-09-01 07:24:56,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45925669] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:24:56,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112755161] [2023-09-01 07:24:56,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:24:56,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:24:56,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:24:56,947 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:24:56,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-09-01 07:24:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:24:57,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 34 conjunts are in the unsatisfiable core [2023-09-01 07:24:57,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:24:57,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:24:57,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:24:57,110 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 07:24:57,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-09-01 07:24:57,195 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 07:24:57,241 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 07:24:57,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 07:24:57,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:24:57,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:24:57,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:24:57,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:24:57,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:24:57,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:24:57,484 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:24:57,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:24:57,559 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1109 (Array Int Int))) (< 0 (+ 4294967296 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1109) c_~a1~0.base) (+ c_~a1~0.offset 4))))) is different from false [2023-09-01 07:24:57,695 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:57,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2023-09-01 07:24:57,702 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:57,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 151 [2023-09-01 07:24:57,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 130 [2023-09-01 07:24:57,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 114 [2023-09-01 07:24:57,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 54 [2023-09-01 07:24:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:24:57,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112755161] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:24:57,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:24:57,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2023-09-01 07:24:57,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382683901] [2023-09-01 07:24:57,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:24:57,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-09-01 07:24:57,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:24:57,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-09-01 07:24:57,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=645, Unknown=12, NotChecked=52, Total=812 [2023-09-01 07:24:58,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 642 [2023-09-01 07:24:58,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 93 transitions, 785 flow. Second operand has 29 states, 29 states have (on average 206.3448275862069) internal successors, (5984), 29 states have internal predecessors, (5984), 0 states have call successors, (0), 0 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 07:24:58,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:24:58,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 642 [2023-09-01 07:24:58,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:25:05,502 INFO L130 PetriNetUnfolder]: 27119/49884 cut-off events. [2023-09-01 07:25:05,502 INFO L131 PetriNetUnfolder]: For 147046/147046 co-relation queries the response was YES. [2023-09-01 07:25:05,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208040 conditions, 49884 events. 27119/49884 cut-off events. For 147046/147046 co-relation queries the response was YES. Maximal size of possible extension queue 2233. Compared 492258 event pairs, 4787 based on Foata normal form. 3290/51198 useless extension candidates. Maximal degree in co-relation 208018. Up to 12608 conditions per place. [2023-09-01 07:25:05,870 INFO L137 encePairwiseOnDemand]: 632/642 looper letters, 249 selfloop transitions, 35 changer transitions 0/284 dead transitions. [2023-09-01 07:25:05,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 284 transitions, 2679 flow [2023-09-01 07:25:05,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 07:25:05,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 07:25:05,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3037 transitions. [2023-09-01 07:25:05,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3378949710725412 [2023-09-01 07:25:05,874 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3037 transitions. [2023-09-01 07:25:05,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3037 transitions. [2023-09-01 07:25:05,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:25:05,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3037 transitions. [2023-09-01 07:25:05,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 216.92857142857142) internal successors, (3037), 14 states have internal predecessors, (3037), 0 states have call successors, (0), 0 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 07:25:05,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 642.0) internal successors, (9630), 15 states have internal predecessors, (9630), 0 states have call successors, (0), 0 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 07:25:05,890 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 642.0) internal successors, (9630), 15 states have internal predecessors, (9630), 0 states have call successors, (0), 0 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 07:25:05,890 INFO L175 Difference]: Start difference. First operand has 118 places, 93 transitions, 785 flow. Second operand 14 states and 3037 transitions. [2023-09-01 07:25:05,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 284 transitions, 2679 flow [2023-09-01 07:25:07,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 284 transitions, 2600 flow, removed 8 selfloop flow, removed 9 redundant places. [2023-09-01 07:25:07,682 INFO L231 Difference]: Finished difference. Result has 123 places, 103 transitions, 907 flow [2023-09-01 07:25:07,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=907, PETRI_PLACES=123, PETRI_TRANSITIONS=103} [2023-09-01 07:25:07,682 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 76 predicate places. [2023-09-01 07:25:07,683 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 103 transitions, 907 flow [2023-09-01 07:25:07,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 206.3448275862069) internal successors, (5984), 29 states have internal predecessors, (5984), 0 states have call successors, (0), 0 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 07:25:07,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:25:07,684 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:25:07,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-09-01 07:25:07,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:25:07,884 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:25:07,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:25:07,885 INFO L85 PathProgramCache]: Analyzing trace with hash -667170649, now seen corresponding path program 2 times [2023-09-01 07:25:07,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:25:07,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527965667] [2023-09-01 07:25:07,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:25:07,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:25:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:25:08,035 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 07:25:08,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:25:08,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527965667] [2023-09-01 07:25:08,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527965667] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:25:08,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70432318] [2023-09-01 07:25:08,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:25:08,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:25:08,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:25:08,037 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:25:08,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-09-01 07:25:08,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 07:25:08,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:25:08,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 07:25:08,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:25:08,339 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 07:25:08,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:25:08,365 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 23 treesize of output 7 [2023-09-01 07:25:08,467 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 07:25:08,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70432318] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:25:08,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:25:08,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-09-01 07:25:08,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827611268] [2023-09-01 07:25:08,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:25:08,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 07:25:08,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:25:08,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 07:25:08,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-09-01 07:25:09,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 642 [2023-09-01 07:25:09,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 103 transitions, 907 flow. Second operand has 19 states, 19 states have (on average 261.42105263157896) internal successors, (4967), 19 states have internal predecessors, (4967), 0 states have call successors, (0), 0 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 07:25:09,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:25:09,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 642 [2023-09-01 07:25:09,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:25:15,503 INFO L130 PetriNetUnfolder]: 23373/43882 cut-off events. [2023-09-01 07:25:15,503 INFO L131 PetriNetUnfolder]: For 170640/170640 co-relation queries the response was YES. [2023-09-01 07:25:15,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183881 conditions, 43882 events. 23373/43882 cut-off events. For 170640/170640 co-relation queries the response was YES. Maximal size of possible extension queue 2026. Compared 432123 event pairs, 13507 based on Foata normal form. 3290/45388 useless extension candidates. Maximal degree in co-relation 183859. Up to 26822 conditions per place. [2023-09-01 07:25:15,805 INFO L137 encePairwiseOnDemand]: 634/642 looper letters, 198 selfloop transitions, 11 changer transitions 7/216 dead transitions. [2023-09-01 07:25:15,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 216 transitions, 2078 flow [2023-09-01 07:25:15,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 07:25:15,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 07:25:15,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2452 transitions. [2023-09-01 07:25:15,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42436829352717204 [2023-09-01 07:25:15,807 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2452 transitions. [2023-09-01 07:25:15,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2452 transitions. [2023-09-01 07:25:15,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:25:15,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2452 transitions. [2023-09-01 07:25:15,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 272.44444444444446) internal successors, (2452), 9 states have internal predecessors, (2452), 0 states have call successors, (0), 0 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 07:25:15,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 642.0) internal successors, (6420), 10 states have internal predecessors, (6420), 0 states have call successors, (0), 0 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 07:25:15,814 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 642.0) internal successors, (6420), 10 states have internal predecessors, (6420), 0 states have call successors, (0), 0 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 07:25:15,814 INFO L175 Difference]: Start difference. First operand has 123 places, 103 transitions, 907 flow. Second operand 9 states and 2452 transitions. [2023-09-01 07:25:15,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 216 transitions, 2078 flow [2023-09-01 07:25:16,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 216 transitions, 2054 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-09-01 07:25:16,837 INFO L231 Difference]: Finished difference. Result has 127 places, 98 transitions, 838 flow [2023-09-01 07:25:16,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=838, PETRI_PLACES=127, PETRI_TRANSITIONS=98} [2023-09-01 07:25:16,838 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 80 predicate places. [2023-09-01 07:25:16,838 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 98 transitions, 838 flow [2023-09-01 07:25:16,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 261.42105263157896) internal successors, (4967), 19 states have internal predecessors, (4967), 0 states have call successors, (0), 0 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 07:25:16,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:25:16,839 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:25:16,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-09-01 07:25:17,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-09-01 07:25:17,039 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:25:17,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:25:17,040 INFO L85 PathProgramCache]: Analyzing trace with hash 255573021, now seen corresponding path program 3 times [2023-09-01 07:25:17,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:25:17,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577213734] [2023-09-01 07:25:17,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:25:17,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:25:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:25:17,389 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 07:25:17,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:25:17,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577213734] [2023-09-01 07:25:17,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577213734] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:25:17,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571239148] [2023-09-01 07:25:17,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 07:25:17,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:25:17,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:25:17,393 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:25:17,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-09-01 07:25:17,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 07:25:17,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:25:17,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 28 conjunts are in the unsatisfiable core [2023-09-01 07:25:17,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:25:17,621 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 07:25:17,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:25:17,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:25:17,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:25:17,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:25:17,750 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 07:25:17,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:25:26,798 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_1205 (Array Int Int)) (v_ArrVal_1204 (Array Int Int)) (~a1~0.base Int) (~a1~0.offset Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1204) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1205))) (let ((.cse0 (select (select .cse1 ~a1~0.base) (+ ~a1~0.offset 4)))) (or (< .cse0 0) (< 0 .cse0) (<= (select (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse2) (+ 2147483647 .cse0)))))) (forall ((v_ArrVal_1205 (Array Int Int)) (v_ArrVal_1204 (Array Int Int)) (~a1~0.base Int) (~a1~0.offset Int)) (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1204) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1205))) (let ((.cse3 (select (select .cse4 ~a1~0.base) (+ ~a1~0.offset 4)))) (or (<= .cse3 0) (< 9223372039002259455 .cse3) (<= (select (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse2) (+ 2147483647 .cse3)))))))) is different from false [2023-09-01 07:25:26,814 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:25:26,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 217 treesize of output 134 [2023-09-01 07:25:26,864 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:25:26,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2673 treesize of output 2416 [2023-09-01 07:25:26,937 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:25:26,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 865 treesize of output 834 [2023-09-01 07:25:26,965 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:25:26,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 825 treesize of output 754 [2023-09-01 07:25:27,001 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:25:27,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 745 treesize of output 674 [2023-09-01 07:25:27,038 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:25:27,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 665 treesize of output 634 [2023-09-01 07:25:41,085 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 2 not checked. [2023-09-01 07:25:41,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571239148] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:25:41,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:25:41,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2023-09-01 07:25:41,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328149802] [2023-09-01 07:25:41,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:25:41,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-09-01 07:25:41,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:25:41,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-09-01 07:25:41,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=458, Unknown=20, NotChecked=44, Total=600 [2023-09-01 07:25:41,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 642 [2023-09-01 07:25:41,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 98 transitions, 838 flow. Second operand has 25 states, 25 states have (on average 229.36) internal successors, (5734), 25 states have internal predecessors, (5734), 0 states have call successors, (0), 0 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 07:25:41,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:25:41,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 642 [2023-09-01 07:25:41,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:25:47,828 WARN L222 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 62 DAG size of output: 51 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 07:25:53,359 INFO L130 PetriNetUnfolder]: 21339/40156 cut-off events. [2023-09-01 07:25:53,359 INFO L131 PetriNetUnfolder]: For 161453/161453 co-relation queries the response was YES. [2023-09-01 07:25:53,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169012 conditions, 40156 events. 21339/40156 cut-off events. For 161453/161453 co-relation queries the response was YES. Maximal size of possible extension queue 1852. Compared 394823 event pairs, 8602 based on Foata normal form. 1692/40208 useless extension candidates. Maximal degree in co-relation 168989. Up to 19620 conditions per place. [2023-09-01 07:25:53,677 INFO L137 encePairwiseOnDemand]: 633/642 looper letters, 129 selfloop transitions, 30 changer transitions 0/159 dead transitions. [2023-09-01 07:25:53,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 159 transitions, 1532 flow [2023-09-01 07:25:53,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 07:25:53,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 07:25:53,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2138 transitions. [2023-09-01 07:25:53,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3700242298373139 [2023-09-01 07:25:53,681 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2138 transitions. [2023-09-01 07:25:53,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2138 transitions. [2023-09-01 07:25:53,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:25:53,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2138 transitions. [2023-09-01 07:25:53,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 237.55555555555554) internal successors, (2138), 9 states have internal predecessors, (2138), 0 states have call successors, (0), 0 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 07:25:53,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 642.0) internal successors, (6420), 10 states have internal predecessors, (6420), 0 states have call successors, (0), 0 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 07:25:53,687 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 642.0) internal successors, (6420), 10 states have internal predecessors, (6420), 0 states have call successors, (0), 0 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 07:25:53,687 INFO L175 Difference]: Start difference. First operand has 127 places, 98 transitions, 838 flow. Second operand 9 states and 2138 transitions. [2023-09-01 07:25:53,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 159 transitions, 1532 flow [2023-09-01 07:25:55,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 159 transitions, 1512 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-09-01 07:25:55,753 INFO L231 Difference]: Finished difference. Result has 128 places, 97 transitions, 866 flow [2023-09-01 07:25:55,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=866, PETRI_PLACES=128, PETRI_TRANSITIONS=97} [2023-09-01 07:25:55,754 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 81 predicate places. [2023-09-01 07:25:55,754 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 97 transitions, 866 flow [2023-09-01 07:25:55,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 229.36) internal successors, (5734), 25 states have internal predecessors, (5734), 0 states have call successors, (0), 0 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 07:25:55,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:25:55,755 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:25:55,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-09-01 07:25:55,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-09-01 07:25:55,956 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:25:55,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:25:55,956 INFO L85 PathProgramCache]: Analyzing trace with hash 255573022, now seen corresponding path program 1 times [2023-09-01 07:25:55,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:25:55,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563113684] [2023-09-01 07:25:55,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:25:55,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:25:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:25:56,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:25:56,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:25:56,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563113684] [2023-09-01 07:25:56,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563113684] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:25:56,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516629677] [2023-09-01 07:25:56,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:25:56,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:25:56,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:25:56,401 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:25:56,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-09-01 07:25:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:25:56,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 50 conjunts are in the unsatisfiable core [2023-09-01 07:25:56,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:25:56,564 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-09-01 07:25:56,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 12 treesize of output 16 [2023-09-01 07:25:56,638 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-09-01 07:25:56,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:25:56,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 07:25:56,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:25:56,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:25:56,829 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:25:56,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:25:56,942 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1261 (Array Int Int)) (v_ArrVal_1260 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1260) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1261) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483649))) is different from false [2023-09-01 07:25:56,951 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:25:56,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-09-01 07:25:56,959 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:25:56,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 75 [2023-09-01 07:25:56,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2023-09-01 07:25:56,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-09-01 07:25:57,080 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 2 not checked. [2023-09-01 07:25:57,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516629677] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:25:57,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:25:57,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 27 [2023-09-01 07:25:57,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015614675] [2023-09-01 07:25:57,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:25:57,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-09-01 07:25:57,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:25:57,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-09-01 07:25:57,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=672, Unknown=9, NotChecked=52, Total=812 [2023-09-01 07:25:57,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 642 [2023-09-01 07:25:57,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 97 transitions, 866 flow. Second operand has 29 states, 29 states have (on average 205.31034482758622) internal successors, (5954), 29 states have internal predecessors, (5954), 0 states have call successors, (0), 0 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 07:25:57,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:25:57,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 642 [2023-09-01 07:25:57,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:26:03,174 INFO L130 PetriNetUnfolder]: 19305/36430 cut-off events. [2023-09-01 07:26:03,175 INFO L131 PetriNetUnfolder]: For 170007/170007 co-relation queries the response was YES. [2023-09-01 07:26:03,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155019 conditions, 36430 events. 19305/36430 cut-off events. For 170007/170007 co-relation queries the response was YES. Maximal size of possible extension queue 1670. Compared 354164 event pairs, 6640 based on Foata normal form. 1692/36626 useless extension candidates. Maximal degree in co-relation 154996. Up to 13752 conditions per place. [2023-09-01 07:26:03,381 INFO L137 encePairwiseOnDemand]: 633/642 looper letters, 206 selfloop transitions, 35 changer transitions 33/274 dead transitions. [2023-09-01 07:26:03,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 274 transitions, 2584 flow [2023-09-01 07:26:03,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 07:26:03,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 07:26:03,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4037 transitions. [2023-09-01 07:26:03,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3309558944089195 [2023-09-01 07:26:03,385 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4037 transitions. [2023-09-01 07:26:03,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4037 transitions. [2023-09-01 07:26:03,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:26:03,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4037 transitions. [2023-09-01 07:26:03,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 212.47368421052633) internal successors, (4037), 19 states have internal predecessors, (4037), 0 states have call successors, (0), 0 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 07:26:03,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 642.0) internal successors, (12840), 20 states have internal predecessors, (12840), 0 states have call successors, (0), 0 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 07:26:03,396 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 642.0) internal successors, (12840), 20 states have internal predecessors, (12840), 0 states have call successors, (0), 0 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 07:26:03,397 INFO L175 Difference]: Start difference. First operand has 128 places, 97 transitions, 866 flow. Second operand 19 states and 4037 transitions. [2023-09-01 07:26:03,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 274 transitions, 2584 flow [2023-09-01 07:26:05,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 274 transitions, 2456 flow, removed 2 selfloop flow, removed 11 redundant places. [2023-09-01 07:26:05,317 INFO L231 Difference]: Finished difference. Result has 135 places, 100 transitions, 840 flow [2023-09-01 07:26:05,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=840, PETRI_PLACES=135, PETRI_TRANSITIONS=100} [2023-09-01 07:26:05,317 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 88 predicate places. [2023-09-01 07:26:05,318 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 100 transitions, 840 flow [2023-09-01 07:26:05,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 205.31034482758622) internal successors, (5954), 29 states have internal predecessors, (5954), 0 states have call successors, (0), 0 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 07:26:05,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:26:05,318 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-09-01 07:26:05,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-09-01 07:26:05,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-09-01 07:26:05,519 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:26:05,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:26:05,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1121012578, now seen corresponding path program 2 times [2023-09-01 07:26:05,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:26:05,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901952642] [2023-09-01 07:26:05,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:26:05,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:26:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:26:05,610 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-09-01 07:26:05,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:26:05,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901952642] [2023-09-01 07:26:05,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901952642] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:26:05,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453775350] [2023-09-01 07:26:05,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:26:05,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:26:05,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:26:05,612 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:26:05,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-09-01 07:26:05,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:26:05,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:26:05,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:26:05,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:26:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:26:05,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:26:05,788 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:26:05,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453775350] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:26:05,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:26:05,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 2, 2] total 7 [2023-09-01 07:26:05,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357753828] [2023-09-01 07:26:05,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:26:05,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 07:26:05,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:26:05,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 07:26:05,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-09-01 07:26:06,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 642 [2023-09-01 07:26:06,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 100 transitions, 840 flow. Second operand has 9 states, 9 states have (on average 258.55555555555554) internal successors, (2327), 9 states have internal predecessors, (2327), 0 states have call successors, (0), 0 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 07:26:06,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:26:06,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 642 [2023-09-01 07:26:06,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:26:10,955 INFO L130 PetriNetUnfolder]: 18780/35531 cut-off events. [2023-09-01 07:26:10,955 INFO L131 PetriNetUnfolder]: For 129580/129580 co-relation queries the response was YES. [2023-09-01 07:26:11,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145002 conditions, 35531 events. 18780/35531 cut-off events. For 129580/129580 co-relation queries the response was YES. Maximal size of possible extension queue 1631. Compared 342861 event pairs, 3228 based on Foata normal form. 0/34409 useless extension candidates. Maximal degree in co-relation 144981. Up to 15578 conditions per place. [2023-09-01 07:26:11,154 INFO L137 encePairwiseOnDemand]: 635/642 looper letters, 183 selfloop transitions, 19 changer transitions 15/217 dead transitions. [2023-09-01 07:26:11,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 217 transitions, 2183 flow [2023-09-01 07:26:11,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 07:26:11,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 07:26:11,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2924 transitions. [2023-09-01 07:26:11,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140470121778533 [2023-09-01 07:26:11,158 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2924 transitions. [2023-09-01 07:26:11,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2924 transitions. [2023-09-01 07:26:11,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:26:11,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2924 transitions. [2023-09-01 07:26:11,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 265.8181818181818) internal successors, (2924), 11 states have internal predecessors, (2924), 0 states have call successors, (0), 0 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 07:26:11,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 642.0) internal successors, (7704), 12 states have internal predecessors, (7704), 0 states have call successors, (0), 0 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 07:26:11,163 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 642.0) internal successors, (7704), 12 states have internal predecessors, (7704), 0 states have call successors, (0), 0 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 07:26:11,163 INFO L175 Difference]: Start difference. First operand has 135 places, 100 transitions, 840 flow. Second operand 11 states and 2924 transitions. [2023-09-01 07:26:11,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 217 transitions, 2183 flow [2023-09-01 07:26:11,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 217 transitions, 2089 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-09-01 07:26:11,704 INFO L231 Difference]: Finished difference. Result has 134 places, 107 transitions, 898 flow [2023-09-01 07:26:11,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=898, PETRI_PLACES=134, PETRI_TRANSITIONS=107} [2023-09-01 07:26:11,704 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 87 predicate places. [2023-09-01 07:26:11,704 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 107 transitions, 898 flow [2023-09-01 07:26:11,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 258.55555555555554) internal successors, (2327), 9 states have internal predecessors, (2327), 0 states have call successors, (0), 0 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 07:26:11,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:26:11,705 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:26:11,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-09-01 07:26:11,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:26:11,906 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:26:11,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:26:11,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1143649704, now seen corresponding path program 4 times [2023-09-01 07:26:11,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:26:11,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989016604] [2023-09-01 07:26:11,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:26:11,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:26:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:26:12,057 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 07:26:12,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:26:12,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989016604] [2023-09-01 07:26:12,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989016604] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:26:12,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802866318] [2023-09-01 07:26:12,058 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 07:26:12,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:26:12,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:26:12,061 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:26:12,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-09-01 07:26:12,221 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 07:26:12,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:26:12,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 07:26:12,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:26:12,320 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 07:26:12,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:26:12,333 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 23 treesize of output 7 [2023-09-01 07:26:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 07:26:12,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802866318] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:26:12,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:26:12,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-09-01 07:26:12,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358828075] [2023-09-01 07:26:12,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:26:12,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 07:26:12,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:26:12,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 07:26:12,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-09-01 07:26:12,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 642 [2023-09-01 07:26:12,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 107 transitions, 898 flow. Second operand has 19 states, 19 states have (on average 261.42105263157896) internal successors, (4967), 19 states have internal predecessors, (4967), 0 states have call successors, (0), 0 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 07:26:12,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:26:12,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 642 [2023-09-01 07:26:12,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:26:18,088 INFO L130 PetriNetUnfolder]: 18358/34833 cut-off events. [2023-09-01 07:26:18,089 INFO L131 PetriNetUnfolder]: For 115252/115252 co-relation queries the response was YES. [2023-09-01 07:26:18,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141785 conditions, 34833 events. 18358/34833 cut-off events. For 115252/115252 co-relation queries the response was YES. Maximal size of possible extension queue 1591. Compared 332486 event pairs, 15352 based on Foata normal form. 368/35201 useless extension candidates. Maximal degree in co-relation 141762. Up to 31935 conditions per place. [2023-09-01 07:26:18,321 INFO L137 encePairwiseOnDemand]: 634/642 looper letters, 174 selfloop transitions, 22 changer transitions 33/229 dead transitions. [2023-09-01 07:26:18,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 229 transitions, 2322 flow [2023-09-01 07:26:18,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 07:26:18,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 07:26:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2443 transitions. [2023-09-01 07:26:18,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42281066112841814 [2023-09-01 07:26:18,326 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2443 transitions. [2023-09-01 07:26:18,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2443 transitions. [2023-09-01 07:26:18,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:26:18,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2443 transitions. [2023-09-01 07:26:18,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 271.44444444444446) internal successors, (2443), 9 states have internal predecessors, (2443), 0 states have call successors, (0), 0 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 07:26:18,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 642.0) internal successors, (6420), 10 states have internal predecessors, (6420), 0 states have call successors, (0), 0 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 07:26:18,331 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 642.0) internal successors, (6420), 10 states have internal predecessors, (6420), 0 states have call successors, (0), 0 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 07:26:18,331 INFO L175 Difference]: Start difference. First operand has 134 places, 107 transitions, 898 flow. Second operand 9 states and 2443 transitions. [2023-09-01 07:26:18,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 229 transitions, 2322 flow [2023-09-01 07:26:19,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 229 transitions, 2304 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-09-01 07:26:19,127 INFO L231 Difference]: Finished difference. Result has 139 places, 104 transitions, 900 flow [2023-09-01 07:26:19,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=900, PETRI_PLACES=139, PETRI_TRANSITIONS=104} [2023-09-01 07:26:19,128 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 92 predicate places. [2023-09-01 07:26:19,128 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 104 transitions, 900 flow [2023-09-01 07:26:19,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 261.42105263157896) internal successors, (4967), 19 states have internal predecessors, (4967), 0 states have call successors, (0), 0 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 07:26:19,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:26:19,129 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:26:19,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-09-01 07:26:19,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-09-01 07:26:19,329 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:26:19,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:26:19,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1121244070, now seen corresponding path program 1 times [2023-09-01 07:26:19,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:26:19,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825993534] [2023-09-01 07:26:19,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:26:19,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:26:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:26:19,713 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:26:19,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:26:19,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825993534] [2023-09-01 07:26:19,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825993534] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:26:19,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461978729] [2023-09-01 07:26:19,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:26:19,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:26:19,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:26:19,714 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:26:19,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-09-01 07:26:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:26:19,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 27 conjunts are in the unsatisfiable core [2023-09-01 07:26:19,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:26:19,919 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 07:26:19,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:26:19,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:26:20,016 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 07:26:20,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:26:20,088 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1398 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1398) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456)) is different from false [2023-09-01 07:26:20,101 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:26:20,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-09-01 07:26:20,111 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:26:20,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2023-09-01 07:26:20,204 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 2 not checked. [2023-09-01 07:26:20,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461978729] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:26:20,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:26:20,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 24 [2023-09-01 07:26:20,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087060886] [2023-09-01 07:26:20,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:26:20,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-09-01 07:26:20,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:26:20,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-09-01 07:26:20,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=521, Unknown=1, NotChecked=46, Total=650 [2023-09-01 07:26:20,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 642 [2023-09-01 07:26:20,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 104 transitions, 900 flow. Second operand has 26 states, 26 states have (on average 210.65384615384616) internal successors, (5477), 26 states have internal predecessors, (5477), 0 states have call successors, (0), 0 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 07:26:20,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:26:20,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 642 [2023-09-01 07:26:20,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:26:26,368 INFO L130 PetriNetUnfolder]: 18140/34121 cut-off events. [2023-09-01 07:26:26,369 INFO L131 PetriNetUnfolder]: For 121442/121442 co-relation queries the response was YES. [2023-09-01 07:26:26,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140188 conditions, 34121 events. 18140/34121 cut-off events. For 121442/121442 co-relation queries the response was YES. Maximal size of possible extension queue 1528. Compared 320013 event pairs, 11214 based on Foata normal form. 27/34148 useless extension candidates. Maximal degree in co-relation 140164. Up to 23687 conditions per place. [2023-09-01 07:26:26,566 INFO L137 encePairwiseOnDemand]: 628/642 looper letters, 115 selfloop transitions, 62 changer transitions 10/187 dead transitions. [2023-09-01 07:26:26,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 187 transitions, 1886 flow [2023-09-01 07:26:26,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-09-01 07:26:26,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-09-01 07:26:26,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4915 transitions. [2023-09-01 07:26:26,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33285927129892995 [2023-09-01 07:26:26,571 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 4915 transitions. [2023-09-01 07:26:26,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 4915 transitions. [2023-09-01 07:26:26,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:26:26,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 4915 transitions. [2023-09-01 07:26:26,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 213.69565217391303) internal successors, (4915), 23 states have internal predecessors, (4915), 0 states have call successors, (0), 0 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 07:26:26,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 642.0) internal successors, (15408), 24 states have internal predecessors, (15408), 0 states have call successors, (0), 0 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 07:26:26,584 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 642.0) internal successors, (15408), 24 states have internal predecessors, (15408), 0 states have call successors, (0), 0 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 07:26:26,585 INFO L175 Difference]: Start difference. First operand has 139 places, 104 transitions, 900 flow. Second operand 23 states and 4915 transitions. [2023-09-01 07:26:26,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 187 transitions, 1886 flow [2023-09-01 07:26:27,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 187 transitions, 1832 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-09-01 07:26:27,368 INFO L231 Difference]: Finished difference. Result has 158 places, 125 transitions, 1238 flow [2023-09-01 07:26:27,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1238, PETRI_PLACES=158, PETRI_TRANSITIONS=125} [2023-09-01 07:26:27,368 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 111 predicate places. [2023-09-01 07:26:27,368 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 125 transitions, 1238 flow [2023-09-01 07:26:27,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 210.65384615384616) internal successors, (5477), 26 states have internal predecessors, (5477), 0 states have call successors, (0), 0 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 07:26:27,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:26:27,369 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:26:27,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-09-01 07:26:27,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-09-01 07:26:27,570 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:26:27,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:26:27,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1121244036, now seen corresponding path program 1 times [2023-09-01 07:26:27,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:26:27,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323039989] [2023-09-01 07:26:27,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:26:27,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:26:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:26:27,991 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:26:27,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:26:27,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323039989] [2023-09-01 07:26:27,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323039989] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:26:27,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53589710] [2023-09-01 07:26:27,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:26:27,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:26:27,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:26:27,993 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:26:28,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-09-01 07:26:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:26:28,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 27 conjunts are in the unsatisfiable core [2023-09-01 07:26:28,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:26:28,214 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 07:26:28,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:26:28,239 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 18 treesize of output 20 [2023-09-01 07:26:28,310 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 07:26:28,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:26:28,384 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1443 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1443) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 4294967296))) is different from false [2023-09-01 07:26:28,392 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:26:28,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-09-01 07:26:28,402 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:26:28,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2023-09-01 07:26:28,486 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 2 not checked. [2023-09-01 07:26:28,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53589710] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:26:28,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:26:28,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 24 [2023-09-01 07:26:28,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490260100] [2023-09-01 07:26:28,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:26:28,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-09-01 07:26:28,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:26:28,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-09-01 07:26:28,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=531, Unknown=1, NotChecked=46, Total=650 [2023-09-01 07:26:28,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 642 [2023-09-01 07:26:28,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 125 transitions, 1238 flow. Second operand has 26 states, 26 states have (on average 210.65384615384616) internal successors, (5477), 26 states have internal predecessors, (5477), 0 states have call successors, (0), 0 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 07:26:28,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:26:28,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 642 [2023-09-01 07:26:28,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:26:34,453 INFO L130 PetriNetUnfolder]: 17517/32527 cut-off events. [2023-09-01 07:26:34,453 INFO L131 PetriNetUnfolder]: For 132476/132476 co-relation queries the response was YES. [2023-09-01 07:26:34,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139340 conditions, 32527 events. 17517/32527 cut-off events. For 132476/132476 co-relation queries the response was YES. Maximal size of possible extension queue 1382. Compared 298058 event pairs, 10688 based on Foata normal form. 27/32554 useless extension candidates. Maximal degree in co-relation 139312. Up to 22183 conditions per place. [2023-09-01 07:26:34,677 INFO L137 encePairwiseOnDemand]: 628/642 looper letters, 122 selfloop transitions, 69 changer transitions 9/200 dead transitions. [2023-09-01 07:26:34,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 200 transitions, 2188 flow [2023-09-01 07:26:34,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-09-01 07:26:34,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-09-01 07:26:34,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5138 transitions. [2023-09-01 07:26:34,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33346313603322947 [2023-09-01 07:26:34,681 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5138 transitions. [2023-09-01 07:26:34,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5138 transitions. [2023-09-01 07:26:34,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:26:34,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5138 transitions. [2023-09-01 07:26:34,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 214.08333333333334) internal successors, (5138), 24 states have internal predecessors, (5138), 0 states have call successors, (0), 0 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 07:26:34,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 642.0) internal successors, (16050), 25 states have internal predecessors, (16050), 0 states have call successors, (0), 0 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 07:26:34,691 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 642.0) internal successors, (16050), 25 states have internal predecessors, (16050), 0 states have call successors, (0), 0 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 07:26:34,691 INFO L175 Difference]: Start difference. First operand has 158 places, 125 transitions, 1238 flow. Second operand 24 states and 5138 transitions. [2023-09-01 07:26:34,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 200 transitions, 2188 flow [2023-09-01 07:26:35,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 200 transitions, 2101 flow, removed 8 selfloop flow, removed 11 redundant places. [2023-09-01 07:26:35,209 INFO L231 Difference]: Finished difference. Result has 174 places, 134 transitions, 1457 flow [2023-09-01 07:26:35,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1457, PETRI_PLACES=174, PETRI_TRANSITIONS=134} [2023-09-01 07:26:35,210 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 127 predicate places. [2023-09-01 07:26:35,210 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 134 transitions, 1457 flow [2023-09-01 07:26:35,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 210.65384615384616) internal successors, (5477), 26 states have internal predecessors, (5477), 0 states have call successors, (0), 0 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 07:26:35,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:26:35,211 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:26:35,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-09-01 07:26:35,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-09-01 07:26:35,412 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:26:35,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:26:35,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1121244011, now seen corresponding path program 1 times [2023-09-01 07:26:35,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:26:35,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963671933] [2023-09-01 07:26:35,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:26:35,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:26:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:26:36,074 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:26:36,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:26:36,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963671933] [2023-09-01 07:26:36,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963671933] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:26:36,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137849205] [2023-09-01 07:26:36,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:26:36,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:26:36,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:26:36,077 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:26:36,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-09-01 07:26:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:26:36,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 31 conjunts are in the unsatisfiable core [2023-09-01 07:26:36,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:26:36,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:26:36,261 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2023-09-01 07:26:36,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 24 [2023-09-01 07:26:36,307 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 07:26:36,346 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 07:26:36,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 07:26:36,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:26:36,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:26:36,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:26:36,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:26:36,475 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 19 treesize of output 7 [2023-09-01 07:26:36,477 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:26:36,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:26:40,763 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:26:40,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-09-01 07:26:40,770 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:26:40,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 129 [2023-09-01 07:26:40,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-09-01 07:26:40,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-09-01 07:26:40,884 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:26:40,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137849205] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:26:40,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:26:40,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2023-09-01 07:26:40,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101679889] [2023-09-01 07:26:40,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:26:40,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-09-01 07:26:40,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:26:40,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-09-01 07:26:40,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=568, Unknown=10, NotChecked=0, Total=650 [2023-09-01 07:26:43,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:26:45,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:26:47,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:26:49,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:26:51,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:26:53,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:26:55,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:26:57,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:26:59,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:27:02,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:27:04,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:27:06,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:27:08,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:27:10,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 07:27:10,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 642 [2023-09-01 07:27:10,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 134 transitions, 1457 flow. Second operand has 26 states, 26 states have (on average 205.53846153846155) internal successors, (5344), 26 states have internal predecessors, (5344), 0 states have call successors, (0), 0 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 07:27:10,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:27:10,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 642 [2023-09-01 07:27:10,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:27:16,564 INFO L130 PetriNetUnfolder]: 19857/35945 cut-off events. [2023-09-01 07:27:16,564 INFO L131 PetriNetUnfolder]: For 166122/166122 co-relation queries the response was YES. [2023-09-01 07:27:16,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161899 conditions, 35945 events. 19857/35945 cut-off events. For 166122/166122 co-relation queries the response was YES. Maximal size of possible extension queue 1509. Compared 323708 event pairs, 16104 based on Foata normal form. 512/36457 useless extension candidates. Maximal degree in co-relation 161866. Up to 29160 conditions per place. [2023-09-01 07:27:16,854 INFO L137 encePairwiseOnDemand]: 631/642 looper letters, 134 selfloop transitions, 57 changer transitions 8/199 dead transitions. [2023-09-01 07:27:16,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 199 transitions, 2289 flow [2023-09-01 07:27:16,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-09-01 07:27:16,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-09-01 07:27:16,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4199 transitions. [2023-09-01 07:27:16,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3270249221183801 [2023-09-01 07:27:16,858 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4199 transitions. [2023-09-01 07:27:16,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4199 transitions. [2023-09-01 07:27:16,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:27:16,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4199 transitions. [2023-09-01 07:27:16,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 209.95) internal successors, (4199), 20 states have internal predecessors, (4199), 0 states have call successors, (0), 0 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 07:27:16,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 642.0) internal successors, (13482), 21 states have internal predecessors, (13482), 0 states have call successors, (0), 0 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 07:27:16,866 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 642.0) internal successors, (13482), 21 states have internal predecessors, (13482), 0 states have call successors, (0), 0 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 07:27:16,866 INFO L175 Difference]: Start difference. First operand has 174 places, 134 transitions, 1457 flow. Second operand 20 states and 4199 transitions. [2023-09-01 07:27:16,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 199 transitions, 2289 flow [2023-09-01 07:27:17,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 199 transitions, 2192 flow, removed 3 selfloop flow, removed 15 redundant places. [2023-09-01 07:27:17,533 INFO L231 Difference]: Finished difference. Result has 183 places, 139 transitions, 1574 flow [2023-09-01 07:27:17,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1321, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1574, PETRI_PLACES=183, PETRI_TRANSITIONS=139} [2023-09-01 07:27:17,534 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 136 predicate places. [2023-09-01 07:27:17,534 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 139 transitions, 1574 flow [2023-09-01 07:27:17,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 205.53846153846155) internal successors, (5344), 26 states have internal predecessors, (5344), 0 states have call successors, (0), 0 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 07:27:17,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:27:17,535 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:27:17,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-09-01 07:27:17,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-09-01 07:27:17,735 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-09-01 07:27:17,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:27:17,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1121244012, now seen corresponding path program 1 times [2023-09-01 07:27:17,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:27:17,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257430775] [2023-09-01 07:27:17,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:27:17,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:27:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:27:18,294 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:27:18,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:27:18,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257430775] [2023-09-01 07:27:18,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257430775] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:27:18,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046025538] [2023-09-01 07:27:18,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:27:18,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:27:18,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:27:18,296 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:27:18,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-09-01 07:27:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:27:18,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 31 conjunts are in the unsatisfiable core [2023-09-01 07:27:18,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:27:18,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:27:18,463 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2023-09-01 07:27:18,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 24 [2023-09-01 07:27:18,513 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 07:27:18,549 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 07:27:18,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 07:27:18,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:27:18,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:27:18,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:27:18,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:27:18,753 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:27:18,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:27:19,271 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~a1~0.offset 4))) (and (forall ((~a2~0.offset Int) (v_ArrVal_1543 (Array Int Int)) (~a2~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1543))) (let ((.cse0 (select (select .cse1 ~a2~0.base) (+ ~a2~0.offset 4)))) (or (< .cse0 (+ 2147483649 (select (select .cse1 c_~a1~0.base) .cse2))) (< (+ .cse0 4294967295) 0) (<= 0 .cse0))))) (forall ((~a2~0.offset Int) (v_ArrVal_1543 (Array Int Int)) (~a2~0.base Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1543))) (let ((.cse3 (select (select .cse4 ~a2~0.base) (+ ~a2~0.offset 4)))) (or (< .cse3 (+ 2147483649 (select (select .cse4 c_~a1~0.base) .cse2))) (< .cse3 0) (< 0 .cse3))))))) is different from false [2023-09-01 07:27:19,399 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~a1~0.offset 4))) (and (forall ((~a2~0.offset Int) (v_ArrVal_1543 (Array Int Int)) (v_ArrVal_1542 (Array Int Int)) (~a2~0.base Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1542) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1543))) (let ((.cse0 (select (select .cse1 ~a2~0.base) (+ ~a2~0.offset 4)))) (or (<= 0 .cse0) (< (+ 4294967295 .cse0) 0) (< .cse0 (+ 2147483649 (select (select .cse1 c_~a1~0.base) .cse2))))))) (forall ((~a2~0.offset Int) (v_ArrVal_1543 (Array Int Int)) (v_ArrVal_1542 (Array Int Int)) (~a2~0.base Int)) (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1542) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1543))) (let ((.cse3 (select (select .cse4 ~a2~0.base) (+ ~a2~0.offset 4)))) (or (< 0 .cse3) (< .cse3 (+ 2147483649 (select (select .cse4 c_~a1~0.base) .cse2))) (< .cse3 0))))))) is different from false [2023-09-01 07:27:19,533 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:27:19,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 231 treesize of output 148 [2023-09-01 07:27:19,583 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:27:19,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2311 treesize of output 2102 [2023-09-01 07:27:19,648 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:27:19,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 885 treesize of output 854 [2023-09-01 07:27:19,674 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:27:19,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 845 treesize of output 774 [2023-09-01 07:27:19,702 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:27:19,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 765 treesize of output 694 [2023-09-01 07:27:19,729 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:27:19,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 685 treesize of output 654 Killed by 15